Forage is a plant material eaten by livestock while roughage is fibrous indigestible material in vegetable food stuff.
Forage are the vegetable material in fresh, dried state while roughage are bulky feeds with low weight that are high in fibers.
Example of forage are leaves, stems and stalks of plants and the example of roughage are peanut hulls, cottonseed hulls.
Forage are easily digestible while roughage are not easily digestible.
Forage has high nutrient value while roughage do not have high nutrirnt value.
Choose all the answers that apply.
Eukaryotes _____.
are always multicellular
are always unicellular
may have evolved from prokaryotes
have membrane-bound organelles
have a true nucleus
are more primitive than prokaryotes
Answer:
The correct answers are:
- May have evolved from prokaryotes
- Have membrane-bound organelles
- Have a true nucleus
Explanation:
- They aren't always multi-cellular although most are.
- Only on occasion are unicellular
- Many scientists hypothesize that eukaryotic cells evolved from prokaryotes
- Eukaryotes have a true nucleus, membrane-bound organelles, and complex internal structures.
- and are not more primitive than prokaryotes, Pros have been around for 4 billion years while Euks have only been around for 1 billion
Hope this helped you!
Final answer:
Eukaryotes are characterized by having a true nucleus and membrane-bound organelles, and they can be both single-celled and multicellular. They may have evolved from prokaryotes and show a complex cellular organization.
Explanation:
Eukaryotes are a diverse group of organisms that have a true nucleus and membrane-bound organelles. They can be either single-celled or multicellular in their body composition, which includes plants, animals, fungi, and protists. The presence of a membrane surrounding their DNA is one of the key features distinguishing them from prokaryotes. There is a consensus among scientists that eukaryotes may have evolved from prokaryotes, likely through endosymbiotic events; however, they are not considered more primitive than prokaryotes, as each group is adapted to its own ecological niches.
how could you use biotechnology to protect a plant from insect damage?
a)insert Gene's that anti-insect chemicals into the plant
b)insert Gene's that produce insulin into the plant
c)add naturally produced anti-insect chemicals to the soil
d)spratt chemicals on plants to stop insects from eating them
Answer: a). Insert Gene's that produce anti- insect chemicals into the plants.
Explanation:
Biotechnology is a field of science which involves the manipulation of genetic make up of the organisms. This improves the quality of living beings.
Among the options given, insert gene that produce anti- insect chemicals into the plants is the correct option. This is because of the fact that this involves the manipulation of the genome of the organism that is plant to provide it resistance against insect infestation.
Forests in Michigan, as well as forests throughout the states, are under increasing development pressure. Parcelization is the division of ownership into smaller and smaller parcels. Fragmentation is when the forest canopy is dissected for houses, lawns, driveways, and other infrastructure. Together, parcelization and fragmentation have impacts on forest ecology and forest biodiversity. ALL BUT ONE what would be a reasonable plan to stop both.
A) Create corridors of trees along fencerows or streams as natural pathways for wildlife connecting forest fragments.
B) Put your land in a conservation easement to insure that it won’t be fragmented in the future.
C) Reforest gaps between nearby blocks of forest and fill in odd areas to make larger blocks.
D) Use carefully controlled burns as a management tool to maintain plant communities.
The Easter Lillie's bring warm air from the Atlantic Ocean to Western Europe. This creates a fairly mild, wet climate
If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, what is the result of this union?
Answer:
We know the gametes contain n number of chromosomes and the union of two gametes egg and sperm result in the formation of zygote which contains 2n chromosomes.
Given the situation, If an egg cell containing the (n+1) number of chromosomes combined with a sperm cell containing the (n) number of chromosomes, it will result in the formation of a zygote containing (2n + 1) chromosomes, a condition that is known as Trisomic.
Trisomic condition can be of different types like:
Full Trisomy: in which an entire extra chromosome is present.Partial trisomy: In which only a small part of extra chromosome is present.Secondary trisomy: In which quadruplicated arms of an extra chromosome are present.Tertiary trisomy: In which extra chromosome contains copies of arms from two other chromosomes.Trisomy is basically a chromosomal aberration condition and if it happens in a human it can cause serious birth defects in children for example: Down syndrome. Here are few diseases that can be caused due to Trisomic conditions of child:
Trisomy due to addition chromosome 21 (Down syndrome) Trisomy due to addition chromosome 18 (Edwards syndrome) Trisomydue to addition chromosome 13 (Patau syndrome)Hope it help!
Answer:
All future somatic cells of the organism will contain the (2n + 1) number of chromosomes.
[O.01]Which of these is the location where sea floor spreading occurs?
A. abyss
B. guyot
C. ocean trenches
D. mid-ocean ridges
I think it's letter C...
What is the main difference between the central nervous system (CNS) and the peripheral nervous system (PNS)?
.The CNS involves the brain and spinal cord, and the PNS involves the body nerves.
.The CNS involves the body nerves, and the PNS involves the brain and spinal cord.
.The CNS involves sensory neurons, and the PNS involves motor neurons.
.The CNS involves motor neurons, and the PNS involves sensory neurons.
Answer: The correct answer is -
The CNS involves the brain and spinal cord, and the PNS involves the body nerves.
Explanation:
CNS (central nervous system) and PNS (peripheral nervous system) are the two different branches of nervous system in the human body.
CNS is further divided into Brain and spinal cord and it is responsible for receiving and interpretation of different information coming from the body parts. It controls most of the functions of body.
PNS on the other hand, possesses nerves that leave brain and spinal cord and innervates the rest of the body parts. In other words, it connects the CNS to other body organs.
Thus, first option is the right answer.
Which of the following is an example of a biotic factor?
The salinity level in a salt marsh
The temperature of water at the seafloor
The shrimp population in a bay
The amount of sunlight reaching a seagrass bed
Answer:
The shrimp population in a bay
Explanation:
Biotic factors are the living component of an ecosystem. These include the plants and animals that inhabit the area. The rest of the choices are the abiotic factors which describe the non-living component of an ecosystem. Abiotic and biotic factors are interrelated and together help to form an ecosystem and biome.
Answer:
shrimp population (C)
Explanation:
How are the cells in multicellular organisms different from those in single-celled organisms?
Single-celled organisms are made of only one cell. Multi-cellular organisms, such as plants and animals, have a higher degree of specialization where the cells work together and function Single-celled organisms are made of only one cell. Multi-cellular organisms, such as plants and animals, have a higher degree of specialization (the adaptation of an organism or organ to a special function or environment)where the cells work together and function to create a living organism.
In multicellular organisms, cells are specialized and communicate with distant cells while in single-celled organisms, the single cell performs all functions and communicates with nearby cells. Multicellular organisms require more time for signal transduction due to their complexity.
Explanation:Cells in multicellular organisms differ from those in single-celled organisms in several key ways. Firstly, multispecies organisms coordinate between distantly located cells, whereas organisms with only one cell communicate only with nearby cells. This is due to the fact that multicellular organisms use receptors for signaling, whereas single cells often communicate through fusion with nearby plasma membranes.
Another key difference is specialized function. In multicellular organisms, cells are specialized, meaning different cells have different functions. For example, a muscle cell is quite different from a liver cell. This specialization is a result of different sets of genes being expressed in different cells. However, all cells, regardless of their type, have to convert energy in sugar molecules into ATP for their own use. In contrast, in single-celled organisms, the lone cell must perform all the functions needed for the organism. All genes can be turned on and off at different times or in response to environmental changes.
Lastly, multicellular organisms require more time for signal transduction in comparison to single-celled organisms due to the complexity and compartmentalization in multicellular organisms.
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PLZZ HELP ASAP (100PTS)
Recall the story of Three Blind Mice where the farmer’s wife cuts off the mouse tails with a carving knife. Because of their tailless condition, the farm cat can’t catch the tailless mice which allows them to be better able to survive and reproduce than the tailed mice.
Using only the information given in this problem, explain what will happen to this population of mice over time (50 years)
Because the mice are losing a predator(cats), their population will grow with time because they no longer have a tail to be caught by.
where the farmer’s wife cuts off the mouse tails with a carving knife. Because of their tailless condition, the farm cat can’t catch the tailless mice which allows them to be b
What occurs when people are exposed to substances that their bodies are sensitive to?
histamines
allergies
antihistamines
allergens
Answer:
D. allergens
Explanation:
`nicotine (c10h14n2), a member of the nightshade family of plants, is an oily liquid that makes up between 0.6 to 3% of a cigarette's mass. contact with the liquid pure form can cause death within hours, as nicotine passes through the dermis and heads directly for the bloodstream. overdoses and death can easily occur in those smoking cigarettes with nicotine patches applied on their body. how many nicotine molecules are in 1.00 g of nicotine?
Answer: There are [tex]3.67\times 10^{21} [/tex] number of nicotine molecules in 1 gram of nicotine.
Explanation:
NIcotine is an organic compound with chemical formula of [tex]C_{10}H_{14}N_2[/tex]
Given mass of nicotine = 1.00 g
Molecular mass of Nicotine = 162.23 g/mol
[tex]\text{moles of compound}=\frac{\text{given mass of compound}}{\text{molar mass of compound}}=\frac{1.00 g}{162.23 g/mol}=0.0061 mol[/tex]
Number of molecules of compound:
[tex]\text{moles of compound}\times {Avogadro number}=0.0061 mol\times 6.022\time 10^{23}=3.67\times 10^{21} molecules[/tex]
There are [tex]3.67\times 10^{21} molecules[/tex] in 1 gram of nicotine.
Scientists have been genetically modifying food crops since the mid 1990's. As a result, scientists have been able to produce crops that are more disease resistant. What could be seen as a risk associated with using genetically modified crops?
Some risks associated with using GMOs are that they can grow resistant to the antibodies, have decreased nutrition in some cases, and there are some health effects as a result of them.
What is a calorie? Briefly explain how cells use a high-calorie molecule such as glucose
Briefly explain how cells use a high-calorie molecule such as glucose. A calorie is enough energy to heat one gram of water by one degree celsius. Cells use molecules such as glucose by breaking them down and using they energy they provide. Write a chemical equation for cellular respiration
Final answer:
A calorie is a unit of heat energy, and kilocalories are typically used to measure the energy content in food. Glucose, a high-calorie molecule, is broken down via cellular respiration to provide energy in the form of ATP, which can be used by cells.
Explanation:
A calorie is the amount of heat energy required to raise the temperature of one milliliter of water by one degree Celsius (°C). In the context of biology and human physiology, we refer to kilocalories (1000 calories) when talking about food energy, and often simply use the term calorie with a capital 'C' to mean kilocalorie.
Cells use glucose, a high-calorie molecule, as a primary source of energy. Glucose is a compact form of energy that is easily transported in the blood and taken up by cells. The chemical formula of glucose is C6H12O6, and the breakdown process by which energy is released is called cellular respiration. During cellular respiration, glucose reacts with oxygen to produce carbon dioxide, water, and energy, which can be summarized by the equation: C6H12O6 + 6O2 → 6CO2 + 6H2O + energy. This energy is then stored as ATP (adenosine triphosphate), which is readily usable by the cell for various biological processes.
Which of the following is NOT an auto-immune disease?
A.) Lupus
B.) Rheumatoid arthritis
C.) Type-1 Diabetes
D.) Down’s syndrome
Down syndrome is the answer.
Take a look at the other diseases to know why.
Lupus: a chronic autoimmune disease where the person's immune system is over active and begins to affect/damage healthy tissue. It can affect tissues all over the body.
Rheumatoid Arthritis: is also an autoimmune disease, not to be mistaken with osteoarthritis (wear and tear). It occurs when the person's immune system attacks the lining of the joints, resulting in swelling and eventually joint deformity.
Type-1 Diabetes: is also an autoimmune disease. It's when the body's immune system attacks and destroys beta-cells in the pancreas. These cells produce insulin, so destroying them results in diabetes.
Down's Syndrome: Although people with down's syndrome often have autoimmune disorders, down's syndrome is a birth defect caused by a chromosome irregularity (trisomy 21). It is not an autoimmune disorder.
Among Lupus, Rheumatoid arthritis, Type-1 Diabetes, and Down’s syndrome, the one that is NOT an auto-immune disease is Down’s syndrome. Auto-immune diseases are ones where the body's immune system attacks its own cells, unlike Down’s syndrome which is a genetic condition.
Explanation:The question asks which of the listed conditions is not an auto-immune disease. Auto-immune diseases are conditions where the immune system mistakenly attacks the body's cells. This includes diseases such as Lupus, Rheumatoid arthritis, and Type-1 Diabetes. However, Down’s syndrome is not an auto-immune disease; it's a genetic condition that results when there is an extra chromosome 21.
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if an adult dog has 78 chromosomes the number of chromosomes in a dogs sperm cell will be
39
Reproductive cells are haploid (have 1/2 the chromosomes), whereas somatic/body cells are diploid (have the full set of chromosomes)
This makes sense if you think about it. Using the example from the question, every dog has 78 chromosomes. This includes two of each (there are two chromosome 1's, two chromosome 2's, etc. This is visible in the karyotype attached). One set of these chromosomes were inherited from the mother, and one set from the father. Each parent contributed 39 chromosomes (one chromosome 1, one chromosome 2, etc.). If the dog in the question were to have 78 chromosomes in its sperm cells, it would contribute two sets to its offspring. When combined with the chromosomes in the egg cell, the offspring would end up with extra chromosomes. Therefore, both the sperm and the egg cells will have 39 chromosomes, one of each. When combined, they will produce offspring with 78 chromosomes, the proper number.
Answer:
39 Chromosomes
Explanation:
Raynaud's disease results in brief periods of vasospasms. This disease affects blood supply to fingers and toes. It is also known to affect blood flow to lips, ears, nose and nipples. During what is called as "Raynaud's attacks", the skin may turn white and then blue for a short time. Which of these best describes why these symptoms occur? A) It results in a narrowing of the veins which slows blood flow. B) It results in a narrowing of the arteries which slows blood flow. C) It results in a widening of the veins which increases blood flow. D) It results in a widening of the arteries which increases blood flow.
A car tire company is testing a new tire that they promote as having improved speeds under wet conditions. An experiment was performed on a wet, closed, half-mile track using the same car and driver. Two trials were performed, one with standard tires and one with the new WetMax tires. What can be concluded about the claims of the tire company? A) There is no hypothesis provided. B) The hypothesis of the company is refuted. C) The hypothesis of the company is verified. D) The hypothesis was neither verified or refuted.
My answer will be option D (The hypothesis was neither verified or refuted) because the results of the two tests carried out with standard tires and with the new WetMax tires are not reported. More information is missing to analyze the results and draw conclusions.
The answer is C) The hypothesis of the company is verified
In an experiment, Marlene removes the six anthers from the flower. What best describes the ability of the altered flower to form seeds?
Ans.
In flowering plants, the male reproductive part or stamen is made up of a stack-like structure, known as filament and an ovule-like structure, known as anther. In anthers, microsporangia are present that produce pollen through mitosis.
Thus, 'if anthers are removed from a flower, it will not be able to form seeds as seeds are developed from zygote, that forms by the fusion of male gamete (pollen) and female gamete (ovum).'
Answer:
This flower will not be able to produce seeds.
Explanation:
The anther is a structure composed of two teak (halves), is fertile and responsible for the production of pollen grains, pollen grains are responsible for the generation of seeds when it comes into contact with the ovary of another plant. Thus, if a flower loses all its anthers, it means that it will not be able to generate pollen and will not be able to produce seeds.
Still in the juvenile state the anther begins the production of pollen. Each teak has two pollen bags (cavities) lined with a layer of nutrients called “tapetum”. It is still in this juvenile phase that the mother cells of the pollen grains are found, resting in each pollen sac. The anther has an outer layer, the epidermis, and an inner layer, the endothecium.
This scientist is known for his work with natural selection, and he is known as the Father of Evolution.
Charles Darwin thats the answer
Final answer:
Charles Darwin is known as the Father of Evolution for formulating the theory of evolution by natural selection, which elucidated the development of life's diversity through common descent.
Explanation:
The scientist known for his work with natural selection and often referred to as the Father of Evolution is Charles Darwin. Darwin's pivotal role in biology stems from his theory of evolution by natural selection, which represents a fundamental unifying concept for understanding the diversity and adaptation of life on Earth. A British naturalist, Darwin not only contributed to evolutionary theory, but also influenced fields such as psychology through the functionalist school of thought. Moreover, his observations and insights were eventually compiled into his renowned work, 'Origin of the Species', conveying the revolutionary idea that all species of life have descended from common ancestors over geological time.
Part of Darwin's genius lay in realizing that selective breeding practices in agriculture were analogous to a natural process. He introduced the concept that competition for limited resources in nature would 'select' individuals better adapted to their environment, a process he termed 'natural selection'. This groundbreaking idea was the result of over two decades of meticulous research and global exploration.
what is the remaining ratio of alleles if my total is 140 and 65.8% are red and 18.2% are blue?
My answer will be that the remaining ratio of alleles will be 16%, since this is the value that is required to have 100% of the alleles.
Answer:
Remaining allele [tex]= 19 \\OR\\= 13.57[/tex]%
Explanation:
Given -
The total number of allele [tex]= 140\\[/tex]
Out of total [tex]140[/tex] allele, nearly [tex]65.8[/tex]% are red allele.
Thus, total number of red allele
[tex]= \frac{68.5}{100} * 140\\= 95.9 \\= 96[/tex]
Out of total [tex]140[/tex] allele, nearly [tex]18.2[/tex]% are blue allele.
Thus, total number of blue allele
[tex]= \frac{18.2}{100} * 140\\= 25.48 \\= 25[/tex]
Remaining allele = Total allele - red allele - blue allele
[tex]= 140 - 96 -25\\= 19[/tex]
Remaining ratio of alleles
= [tex]\frac{19}{140} * 100\\= 13.57[/tex]%
The formula for aluminum fluoride is electrically neutral. Which of the following is the correct formula for this compound? Which consists of only aluminum and fluoride ions? An aluminum ion has three positive charges
In aluminium fluoride, aluminium carries positive charges so fluoride should carry negative charge to be electrically neutral.So for aluminium ion with three positive charges fluoride ion should possess three negative charges to make aluminium fluoride electrically neutral.
[tex]AlF_{3}[/tex]→[tex]Al^{3+} and F^{3-}[/tex]
Where near your home do you think the highest level of photosynthesis is happening?
Answer:
I live in a rural area which is surrounded by mountains and valleys. Near my home there is small forest area where there are hundreds of thick tall forests, algae and many other photosynthetic plants.
The atmosphere of that forest is very clean and refreshing because there is alot of oxygen being produced there due to alot of photosynthesis being done by all the lush green plants there.
Due to photosynthesis, carbon di oxide that is an environmental pollutant is maximum used by the plants and maximum. Oxygen is produced as a result of photosynthesis.
This causes the environment of not only that forest but my whole village very clean and fresh to breath. We are living a healthy life where there is a less prevalence of diseases or infections that are caused by environmental pollutants like Bronchitis, Lungs infection, neural disorders etc.
Therefore, even if there is not such an area near your home, we would suggest you to plant more trees in your backyard that will make the environment of not only your home but your area very fresh and clean.
Hope it help!
Which of these facts about wild boars is best supported by the evidence provided?
A) Wild boars were brought to the United States by humans.
B) Wild boars have quickly spread through the United States.
C) Wild boars have established successfully in areas with warm climates.
D) Wild boars have a high reproductive rate and no natural predators
Answer:
The right answer to this question is option D. Wild boars have a high reproductive rate and no natural predators.
Explanation:
What is known is that, for a population to spread such as the boars, it needs to be well adapted to the environmend around it, and the boars can do that easily, they have a very diversified diet, they have a very high reproductive rate and no natural predators as said on the question. Their only threatening predator right now are where they are located are humans. With all these characteristics, this species can easily adapt themselves to weather changes. As they have a high reproductive rate, they can too, adapt well new environments due to natural selection.
Which of the following are characteristics of binary ionic compounds?(Select all that apply)
A. Made of up of 2 nonmetallic elements
B. Made of a metallic and a nonmetallic elements
C. Involves the sharing of electrons
D. Involves the transferring of electrons
E . Is overall electrically neutral
F. May or may not be electrically neutral
A binary ionic compound contains ions of two different elements - a metal, and a nonmetal.
These have following characteristics-
B. Made of a metallic and a nonmetallic elements
D. Involves the transferring of electrons
E . Is overall electrically neutral (the charges of the cations and anions must balance or cancel out one another. )
Answer:
D. Involves the transferring of electrons
F. May or may not be electrically neutral
Explanation:
Chemistry considers a binary compound when its molecule is formed by two different chemical elements, regardless of the function to which this compound belongs. Thus, with respect to inorganic functions, we may have a binary compound representing an acid, a salt or an oxide.
Binary compounds make much use of the theory of electron donation and reception. Many of the binary compounds are characterized by one or more ionic bonds when donating and receiving electrons.
According to ionic theory, for an AB-type compound, element A has a positive character, which characterizes it as an electron donor. Negative compound B, on the other hand, is an acceptor of electrons, which come from A. Thus, most binary compounds are characterized by the presence in their structure of one or more ionic bonds (electron donation and reception) and may leave the binary compound electrically charged or not.
What is a reason that fossil fuels are often used as an energy source?
Animals and plants are not affected by their usage.
Beneficial byproducts are created from their combustion.
There is an unlimited supply of them in the ground.
They are relatively inexpensive and easy to produce.
Answer:
They are relatively inexpensive and easy to produce.
Explanation:
Energy plays a vital role in modern world and our day to day life, from lightening our homes and offices to driving our cars and aeroplanes. About 80 Percent energy that we use in modern world comes from fossil fuels
Therefore, we can say that we rely on fossil fuels for our energy demands to a lot of extent. The main sources of energy in the form of fossil fuels are only three that are coal, petroleum and natural gas.
Although the usage of energy generated from fossil fuels creates harmful emission of gases like carbon di oxide and carbon mono oxide, and it is not very safe for the lives of human and animals, but still it is used by major world now adays.
The fossil fuels are also non renewable source of energy and there is a finite amount of them in world, therefore, scientists and environmentalists are focussing on the usage of green source of energy like biofuels etc.
However, the reason why fossil fuels are excessively used by world are :
They are easily availableThey can be stored and easily moved around the world.The energy from them is easily produced through combustion that can be used for cooking, transportation and heating purposes.Therefore, option number 4 is the best option.
Hope it help!
Which of these characteristics affects the diffusion oxygen into the icefish's blood? which of these characteristics affects the diffusion oxygen into the icefish's blood? icefish have clear, thin blood. icefish have transparent, scale-less skin. icefish gills are white. icefish hearts are colorless?
The theory of plate tectonics came from the idea of continental drift, which was proposed in the early 20th Century by A) Max Planck. B) Gottlob Frege. C) Alfred Wegener. D) Werner Heisenberg.Which geological features MOST LIKELY prompted the development of the theory of plate tectonics?
A) river deltas
B) glacier fields
C) mountain ranges
D) tropical rainforests
35)
All BUT ONE statement provides evidence supporting plate tectonics, through data collected at the sites of sea floor spreading. That is
A) paleomagnetic reversals in specific areas of the sea floor.
B) a large occurrence of earthquakes along specific lines within the Earth's oceans.
C) the presence of unique species in remote locations, such as Australia and New Zealand.
D) an increase in the thickness of ocean crust as you move away from the area of spreading.
36)
The origins of the theory of plate tectonics began when German scientist, Alfred Wegener, proposed the idea of
A) superposition.
B) continental drift.
C) natural selection.
D) paleomagnetic reversals.
37)
In the early 1900s German geophysicist Alfred Wegener began to question how the structures on the Earth formed over time. He proposed the Theory of Continental Drift to suggest that all continents were once connected and have "drifted" to their current location over time.
What was the main reason that Wegener's theory received a lot of ridicule from the scientific community?
A) No similar fossils were found on different continents.
B) There was no data to suggest any change in geologic structures.
C) Wegener did not give a method on how the continents actually moved.
D) The outlines of the continents looked like puzzle pieces that would fit together.
38)
Mars rotates by 360 degrees on its axis in 24 hours and 39 minutes. Which of these is equivalent to 24 hours and 39 minutes on Mars?
A) A day
B) A year
C) A week
D) A month
1. C
2. A (i think)
3. D
4.B
5. D
6.A (i think)
Final answer:
Alfred Wegener's continental drift hypothesis led to the theory of plate tectonics, which suggested a past supercontinent named Pangaea. Mountain ranges most likely prompted the theory, and Wegener faced ridicule because he lacked a mechanism for continental movement. A Martian day, or sol, is equivalent to 24 hours and 39 minutes.
Explanation:
The theory of plate tectonics originated from Alfred Wegener's idea of continental drift, which he proposed in the early 20th Century. Wegener's hypothesis was based on several key observations including the jigsaw-puzzle fit of the continents, similar fossils found across oceans, matching mountain ranges in separate continents, and paleoclimate evidence suggesting the joining of continents. His concept of a supercontinent Pangaea, which existed around 200 million years ago, was initially rejected because he could not explain how the continents moved. It wasn't until the 1960s, with the discovery of seafloor spreading, that continental drift and plate tectonics were widely accepted, revolutionizing our understanding of Earth's geology.
The geological features that most likely prompted the development of the theory of plate tectonics are mountain ranges (C), because they provide visible evidence of the immense forces and the movement of the Earth's crust involved in the theory.
The correct evidence supporting plate tectonics through data collected at the sites of sea floor spreading is: A) paleomagnetic reversals in specific areas of the sea floor, B) a large occurrence of earthquakes along specific lines within the Earth's oceans, and D) an increase in the thickness of ocean crust as you move away from the area of spreading. The option that does not support this is C) the presence of unique species in remote locations, such as Australia and New Zealand.
One of the main reasons Wegener's theory of continental drift received ridicule from the scientific community (C) was that he did not provide a mechanism on how the continents actually moved.
A Mars day, which is equivalent to 24 hours and 39 minutes, is known as a sol (A).
what organelle is found in animal cells but NOT in plant cells?
Centrioles is only found in animal cells but not in plant cells.
you have observed two frantic foxes mating and producing 3 red offspring and 1 white offspring.
true/false: both parents are heterozygous for this trait
Answer:
The given statement is false.
Two frantic foxes mate and produce 3 red offspring and 1 white offspring in two possible manner
Case I: When one of the parent is heterozygous (Rr) and other is homozygous recessive (rr).
Case II: When both the parents are heterozygus (Rr).
What are the threadlike proteins that attach to platelets in blood clotting?
Answer:
fibrin
Explanation:
Fibrin is a protein that acts as a first response whenever your body is injured in order to play an important role in the blood clotting process. When any type of injury that causes blood leakage occurs and coagulation begins, an alert is then sent to the body to start producing fibrin.
In the form of long strands, each fibrin molecule intertwines to form a thin mesh around the lesion. As a result, this mesh stops the blood by capturing red blood cells, leukocytes and platelets, generating a clot and forming a kind of tampon at the injured site.
In summary, we can say that fibrin is a yarn-like protein that binds to platelets in blood clotting.