Final answer:
Option B illustrates natural selection, where rabbits with a heritable trait - longer, thicker fur - survive an exceptionally cold winter better than rabbits without this mutation, leading to a genetic shift in the population.
Explanation:
The example of natural selection provided in the student's options is B. rabbits with a mutation for longer, thicker fur survive an unusually cold winter, while many normal rabbits do not survive. This situation illustrates natural selection because it demonstrates an environmental pressure - the unusually cold winter - which leads to differential survival based on a heritable trait - the longer, thicker fur. As a result, rabbits with the mutation are more likely to survive and reproduce, passing on the gene for thicker fur to the next generation, thereby changing the genetic make-up of the rabbit population over time.
Why do birds have enough energy to fly
They have enough energy to fly because, Birds have a very strong heart and an efficient way of breathing. And, these are necessary for birds to fly. Birds also use a lot of energy while flying and need to eat a lot of food to power their flight.
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The diagram shows a process used to produce apple trees with the desired trait of sweeter fruits.
Which labels should be used to complete the diagram?
A X: Enzymes
Y: Apple tree DNA
B X: Enzymes
Y: Gene for sweeter fruit
C. X: Apple tree DNA
Y: Gene for sweeter fruit
D. X: Gene for sweeter fruit
Y: Apple tree DNA
Answer:
gene for sweeter fruit
The answer is option B:
X: Enzymes
Y: Gene for sweeter fruit
The labels that should be used to complete the diagram are 'X: Enzymes' and 'Y: Gene for sweeter fruit'. Enzymes are involved in modifying the apple tree DNA, and the gene denoted as Y is responsible for the desired trait of sweeter fruit.
The labels that should be used to complete the diagram are:
X: Enzymes
Y: Gene for sweeter fruit
This represents the process of genetic modification, where enzymes are used to insert a specific gene (for sweeter fruit) into the DNA of an apple tree.
Enzymes are biological molecules that catalyze chemical reactions, and in this process, enzymes are involved in modifying the apple tree DNA to produce sweeter fruits. The specific gene responsible for the desired trait of sweeter fruit is denoted as Y.
Which statement best explains why cellular respiration in plants and other organisms is dependent on photosynthesis
Cellular respiration depends on two chemical reactants; glucose and oxygen. Glucose and oxygen are made available to plants and animals for cellular respiration thanks to photosynthesis. Photosynthesis is the chemical reaction that uses solar energy to convert water and carbon dioxide into glucose and oxygen. Without photosynthesis, the available glucose and oxygen on the planet would quickly deplete to the point that life could not be sustained on Earth.
Photosynthesis produces glucose and oxygen, which are required for cellular respiration. Therefore, without photosynthesis, cellular respiration in plants and other organisms could not occur.
Explanation:The dependency of cellular respiration on photosynthesis in plants and other organisms is explained by the fact that photosynthesis produces the essential materials required for cellular respiration. Specifically, photosynthesis produces glucose and oxygen, which all organisms use to perform cellular respiration. Photosynthesis forms an energy link with cellular respiration.
In the process of photosynthesis, plants convert light energy into chemical energy, creating glucose and releasing oxygen into the atmosphere. This glucose and oxygen then become the fuel for cellular respiration, a process where energy is released from glucose and used to create ATP, a molecule that powers cellular activities.
Therefore, without the glucose and oxygen produced by photosynthesis, cellular respiration could not occur. This signifies the intricate relationship and dependency between photosynthesis and cellular respiration, highlighting the vital role they play in maintaining life on Earth.
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The oldest rocks found on Earth are 3.96 billion years old. However, scientists believe the Earth is about 4.6 billion years old. What evidence supports this idea? Choose all that apply.
The Earth is 4,54 billion years old. This age has been determined with the radioactive dating technique. The precise decay rate of radioactive elements is used as a clock: the number of daughter products in one rock indicates its age.
The oldest meteorites ever dated in the Solar System are 4,56 billion years old, the oldest minerals on Earth are 4,4 billion years old, and the oldest rocks on Earth are 4 billion years old. These ages are very consistent because the meteorites had to form before the accretion of our planet, and the Earth had to cool down before the first minerals could crystallise.
The Solar System was formed around 4.6 billion years ago, out of the collapse of a dense cloud composed of dusts and gases. Meteorites, which are the very components of our planets (through the process of accretion), are the remnants of the Solar System’s origins. Dating meteorites thus allows us to give a lower age to the Solar System (4,56 billion years old).
Help me plz!
1. How different are the wet and dry earwax genes?
A.3 codon difference.
B. switch of a single DNA unit.
C. inversion of a segment of DNA 30 units long.
D. there is no difference, it has to do with a gene being activated.
2. Why is earwax important?
A. It is like biological flypaper, prevents dust and insects from entering the ear.
B. It helps keep noise levels down, protecting our ear drums from bursting.
C. It helps maintain homeostasis.
D. It assists with balance and maintaining a strong equilibrium.
3. Those of us who tend to sweat a lot and have armpit odor probably have what type of earwax?
A. Dry earwax
B. Both wet and dry earwax
C. Sweat and odor have nothing to do with armpit odor
D. Wet earwax
4. Which type of earwax is dominant?
Question 14 options:
A. Dry earwax
B. Wet earwax
C. They exhibit incomplete dominance
D. They exhibit co-dominance
5. If a person with wet earwax had offspring with a person who had dry earwax and all 200 of their children had wet earwax, what would be the genotype of the parent with wet earwax?
A. WW
B. Ww
C. ww
D. can't determine the genotype
Answer 1: Difference b/w wet and dry earwax genes is due to switch of a single DNA unit i.e. single nucleotide polymorphism.
Answer 2: Earwax is important in many ways mainly it is a biological flypaper as it prevents dust and insects from entering the ear.
Answer 3: Genetics have proved that for those who sweat a lot and have armpit odor have wet earwax.
Answer 4: The wet type earwax is dominant one with honey brown or dark brown color while dry one is recessive.
Answer 5: As wet earwax is dominant trait, according to the given scenario the genotype of parent with wet earwax will be "WW" which when crossed with dry earwax parent will have all the offsprings with wet earwax.
Which factor most strongly influences the kinds of plants that can grow in an area?
The climate of the area - APEX
Answer:
the areas climate
Explanation:
identify the main term for removal of gallbladder calculi by means of an open procedure
Laparoscopic Cholecystectomy
Gallbladder is known to be pear shaped organ that is found beneath the right side of the liver. It functions by collecting and concentrating the bile (digestive liquid ) produced by the liver. However, Laparoscopic Cholecystectomy (Laparoscopic Gallbladder Removal ) is known to be a surgical procedure performed for the removal of gallbladder which involves the use of small incision instead of large one.
The main term for the removal of gallbladder calculi by means of an open procedure is cholecystectomy.
Explanation:The main term for the removal of gallbladder calculi by means of an open procedure is cholecystectomy. This surgical procedure involves the complete removal of the gallbladder to treat conditions such as gallstones. This may be done due to gallstones, inflammation, or other gallbladder-related issues. Often performed laparoscopically, the surgeon makes small incisions and uses a camera for visualization.
Cholecystectomy is a common and generally safe procedure, and the body can adapt to the absence of the gallbladder. While patients may experience changes in digestion, the procedure aims to alleviate symptoms and prevent complications associated with gallbladder disorders.
What would be some possible effects of connective tissue disease?
Connective tissue disease include some diseases where tissues rich in protein, that support body parts and organs get damaged. These tissues include cartilage, bones and fats and the diseases caused by the damage of these tissues include joints pain, muscles damage and skin damage etc.
However, the problems from Connective tissue disease are not solely confined to these organs and can effect other organs too like kidneys,lungs,heart,eyes,blood vessels and gastrointestinal tract. More than two hundred connective tissue disorders exist that show a variety of effects, Here we will discuss only few:
Epidermolysis bullosa:
This connective tissue disorder effect the skin by making it very fragile that even a minor cut can tear the skin and leave blisters. This occurs due to defect of some proteins.
Marfan syndrome:
This syndrome affects ligaments, heart, eyes, and blood vessels. The people suffering from the disease have very long bones and abnormal placement of eye lenses. This is caused by genetic mutations.
Osteogenesis imperfecta:
This conditions makes the bones very brittle and lowers the mass of joints, muscles and ligaments. It can also cause Curved spine,Thin skin and breathing problems in the person suffering from the disorder.
This also occurs due to mutation of genes.
Polymyositis and dermatomyositis:
In both these disorders, inflammation of skin and muscles occur and can cause symptoms fatigue, weakness, Shortness of breath,Difficulty swallowing ,Weight loss .
Note: These are some of the effects discussed but as mentioned earlier there are more than 200 disorders of connective tissues and their effects can vary from one to another.
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The equation shows cellular respiration during cellular respiration glue close combined with oxygen to form carbon dioxide water in ATP what happens to the energy and bonds and glue close
C6H1206 + 602 + 6H20 +ATP
Answer:
During the process of cellular respiration,that comprises three further processes (glycolysis, Kreb cycle and electron transport chain) the energy present in glucose molecules is transformed into ATP.
Explanation;
Cellular respiration is a process in which sugar breaks down to produce H2O and carbon di oxide, and during the same process energy in the form of ATP packets is formed that can be later on used by an organism to perform day to day activities.
Cellular respiration is the process during which energy present in the bonds of glucose are transformed into the form of ATP. ATP is the molecule that stores energy in its phosphate (PO4) bonds.
Hydrolysis of one phosphate bond of ATP releases almost 7.3 kJ of energy. Similarly, the hydrolysis of second phosphate bond of Adenosine mono phosphate releases around 3.4 to 3.6 kJ of energy. Therefore, the total amount of energy released from ATP hydrolyses is around 18 to 18.2 kJ of energy!
This energy is all that living organisms need to fulfill their cellular and physical work requirements.
Hope it help!
Answer:
Cellular respiration refers to the set of metabolic reactions taking place in a cell in order to harness energy from the food (glucose) and convert it to more usable form which is ATP (adenosine triphosphate).
The bonds of glucose and oxygen are broken, added, and are rearranged to form carbon dioxide, water and ATP.
The glucose is oxidized through various steps such as glycolysis, pyruvate decarboxylation, and Krebs cycle.
All the NADH₂ and FADH₂ formed by the above reactions undergo electron transport chain which causes oxidative phosphorylation of ADP to form ATP.
The summary of cellular respiration is shown in the form of the chart below.
what are biotic and abiotic factors of cellular respiration
Abiotic- this refers to non living physical and chemical elements in the ecosystem( soil, water, sunlight, air, and minerals).
Biotic- this refers to living or once-living organisms in the ecosystem.
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is mold that grows on bread a decomposer a producer or a consumer
The mold that grows on bread would be a decomposer. The reason why it would be a decomposer is because when the bread starts molding, it decomposes to get energy from it. The mold in the bread would be a fungi growing on the bread, and fungi decomposes. It wouldn't be a producer because the molds do not produce anything. It would also not be a consumer because it's not consuming anything to make it any better.
It can be considered that mold that grows on bread a decomposer as it break down organic matter present on bread.
On-bread mold is regarded as a decomposer. Organisms known as decomposers consume decaying organic debris, such as dead plants or animals, to gain nutrients.
Mold receives its nourishment from the bread by secreting enzymes that aid in the breakdown of complex organic molecules into more easily absorbed and used forms.
As a decomposer, mold is essential to the decomposition of organic matter in ecosystems and the cycling of nutrients.
It contributes to the recycling of organic matter and the preservation of ecological balance by aiding in the breakdown of the bread and the release of its nutrients back into the environment.
Thus, the mold can be considered decomposer.
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What does this extreme drop between November and December most likely represent?
Answer:A reflection of the migratory nature of the birds at the lake
Explanation:
I just got it right
Why are marshes more productive than bogs
The acidity of the soil-peat inhabits diversity of plant species compared to marshes.
An important distinction to bogs would be that marsh soils are more typically neutral in the pH scale, to slightly more basic.
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Answer:
The high nutrient enriched soil, long growing period and sufficient sunlight exposure are major factors which makes the marshes more productive than the bogs.
Explanation:
Marshes are one of the highly productive ecosystems just like the swamps. This is because of the following reasons –
a) High nutrient depositions due to the flow of nutrient enriched sediments of river though the marsh area
b) They have long growing period
c) Sufficient amount of sunlight exposure.
While bogs remain water choked most of time in a year and thus decaying plants and leaves form an important part of its soil. Such soils have low oxygen and nutrient content.
A man with Type A blood marries a woman with Type AB blood. According to predicted outcomes based on genetics, their children may have all blood types EXCEPT Type
A) A.
B) AB.
C) B.
D) O.
A man with Type A blood marries a woman with Type AB blood. According to predicted outcomes based on genetics, their children may have all blood types EXCEPT Type O, which is in option D.
What is the ABO blood group?The ABO blood group system is determined by the presence or absence of two types of antigens (A and B) on the surface of red blood cells and the presence or absence of antibodies against these antigens in the plasma. A person with type A blood has the A antigen on their red blood cells and produces antibodies against the B antigen in their plasma. A person with type AB blood has both A and B antigens on their red blood cells and produces no antibodies against either A or B antigens in their plasma. Therefore, if a man with type A blood (genotype AA or AO) marries a woman with type AB blood (genotype AB), their possible offspring could inherit either the A or B allele from the father and the A and B alleles from the mother, resulting in either blood types A, B, or AB.
Hence, a man with Type A blood marries a woman with Type AB blood. According to predicted outcomes based on genetics, their children may have all blood types EXCEPT Type O, which is in option D.
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After her run aisha felt thirsty.thirst was her body way of telling her she needes more water to maintain
Thirst is a signal from the body to maintain fluid balance by increasing water intake, particularly when dehydration threatens bodily function. Dehydration can seriously impair cellular activities, and the body uses various mechanisms, including the sensation of thirst, to regulate water balance.
Explanation:Thirst is an essential sensation that signals the need for hydration, which is vital for proper bodily function. The body maintains water balance through complex physiological processes including the sensation of thirst.
Dehydration occurs when the loss of water exceeds intake, leading to reduced body water content. This can impair cellular function and can be especially dangerous in conditions like extreme heat or during physical activity, where water loss through sweating is increased.
When a person becomes dehydrated, osmoreceptors in the hypothalamus detect increased blood osmolality, triggering the release of antidiuretic hormone (ADH) and stimulating the conscious feeling of thirst. Thus, it is crucial to heed thirst signals and ensure adequate water intake to maintain the body's fluid balance for optimal health and performance.
Which terrestrial biome has abundant rainfall?
Rainfall in 1.)_____ is abundant, with 2,000 to 2.) ______ millimeters of rain each year.
1.) A.)coniferous forests
B.) rainforests
C.)temperate deciduous forests
2.) A.)10,000
B.)5,000
C.)3,000
The answer for 1) would be B) Rainforests and 2) would be A) 10,000.
Answer:
1(b) 2(c)
Explanation:
What type of storm is shown in the graph
If a virus kills the entire coyote population in this ecosystem eliminating all the predators of the rabbit. Describe what you would expect to see happen to the organisms in this ecosystem in the next 5-10 years.
The question is assuming that the coyotes are the only predators (hence eliminating all predators of the rabbit).
What would happen is that the rabbit population would continue to thrive throughout the years, until the producers cannot support the rabbits, leading to a mass extinction of the rabbits and the destruction of the ecosystem that used to be there.
in experiment 3, what was the appearance of the elodea cells in aquarium water a:The chloroplasts were located mostly from the center of the cell b:The chloroplasts were located mostly at the periphery of the cell c:The cell membrane was pressed against the cell wall d: The cell membrane shriveled and pulled away from the cell wall
your answer is C- he cell membrane was pressed against the cell wall
Answer:
The correct answer will be option-B.
Explanation:
Elodea is the aquatic plant which contains all the organelles like a nucleus and cell wall which gives the box-like appearance to the cells. The elodea cells lack a central nucleus.
In the given question, the chloroplast organelle associated with the photosynthesis in plants is observed at the periphery in every plant cell. Few chloroplast cells are distributed in the center.
Thus, Option-B is the correct answer.
Why is it important that cells formed by mitosis have the same number of chromosomes as the parent cell?
Mitosis refers to a procedure of producing more cells, which are genetically similar to the parent cell. It plays an essential role in the development of embryos, and it is essential for the development and growth of the bodies as well. Mitosis generates novel cells and substitutes the cells, which are lost, old or destructed.
In mitosis, a cell differentiates to produce two similar daughter cells. It is essential that the daughter cells exhibit a copy of each chromosome, so the procedure includes copying the chromosomes initially and then carefully distinguishing the copies to provide each new cell a complete set.
Penicillin is an antibiotic that was discovered in 1928. Today many species of bacteria have acquired resistance to penicillin. This adaptation occurred as a result of
Answer:
THE ANSWER IS C ( genetic mutation) ON USATestPrep because...
Explanation:
Many bacteria have acquired the ability to produce an enzyme called penicillinase, which destroys penicillin. All enzymes are proteins. The ability to produce the new protein penicillinase came from a change in the bacterial DNA: a genetic mutation.
If a population grows larger than its environmental carrying capacity, then
A) death rate may rise.
B) immigration rate may increase.
C) birth rate may rise significantly.
D) death rate may fall significantly.
A- the Death rate may rise because there might not be enough resources for everyone to live off of.
Answer:
i think the a might be the answer
Explanation:
Does the grasshopper or caterpillar undergo incomplete metamorphosis
The phenomenon called incomplete metamorphosis is seen in grasshopper.
Explanation:The total number of the stages act as major difference between incomplete and complete metamorphosis. The former has 3 stages namely egg, nymph and adult, whereas the latter has 4 stages namely egg, larva, pupa and adult.
The process of incomplete metamorphosis is seen in insects such as grasshopper, termites, true bugs, praying mantis etc. The caterpillar shows complete metamorphosis at the end of which adult butterfly emerges out.
In incomplete metamorphosis, initially, the insect comes out of egg. Then it grows and becomes nymph which is a smaller version of adult insect, its physical appearance is very vulnerable due to its young age. Then it grows into a adult insects and lives till its end.
What does this symbol represent
It represents a cold front
The large number of potential gene make it unlikely that any two people will be identical. urgentttttttttttttttt 1. mutattions 2. combonations 3. frequency
The correct answer is option 2, that is, combinations.
The production of offspring with combinations of traits, which vary from those found in either of the parents is known as genetic reshuffling or genetic recombination. The genetic recombination, in eukaryotes, can result in the generation of a new set of genetic information, which can be conducted on from the parents to the offspring. Due to these variations, it is unlikely that any two individuals will be similar.
The process that produces a similar appearance among unrelated groups of organisms is A. coevolution. B. mass extinction. C. punctuated evolution. D. convergent evolution.
Answer:
C. Convergent evolution.
Explanation:
Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups.
What is the benefit of recycling plastic and paper products to wildlife?
Answer:
There is no doubt that recycling of plastic and paper materials are not only useful for human beings but also for wild life. Here we will discuss some of the reasons how it is useful for wildlife:
If we will recycle more paper, it will save alot of trees from cutting down for fuel, this will maintain eco system in a good health and save more trees.Recycling of plastic materials like vinyl packaging can help in avoiding the dumping off of these plastic materials in landfills and water lakes and oceans. This prevents the life of many water organisms like fish because plastic material release harmful chemicals when discharged in landfill and oceans which cause death of many living organisms inhabiting there.It is estimated that over a trillion plastic bags are used by human beings annually. This plastic material fill the landfill when discharged and release chemicals which seep into surrounding soil and affect the health of plants growing in soil as well as water bodies living there. So recycling of plastic will lessen the number of landfills and overall improve the eco system by maintaining the diversity of wild life.Along with benefit of wildlife , it will also produce clean water, clean beaches and wetlands for human beings which can cherish and enjoy nature more as well as improve their health by minimizing the usage of toxic chemical containing fish or other sea food.Hope it help!
Cyanobacteria, unusual worm like life-forms and marine organisms did not exist in Precambrian Time. Please select the best answer from the choices provided T F
I believe the answer is false, but I am not 100% sure
Answer:
The given statement is false.
Explanation:
The Precambrian era contains all of the time before 600 million years ago. The earth's history before the formation of the oldest rock with observable fossils in them refers to Precambrian era.
The discovery of sediments and other evidence implies the surface temperature of above 0° C during the early part of the Precambrian era.
Traces of hundreds of life forms are found in the microfossils of the Precambrian era. Some of these species were early photosynthesizers. Stromatolites are stratiform structures made from microorganisms, particularly blue-green algae.
So, the statement is false.
what patterns do you notice? describe three patterns
was there something attached to this- if not here are 3 patters
2,2,2,1,1,2,2,2,1,1
it starts with repeating the number 2 three times and then repeating the number 1 twice and repeats.
T,T,A,A
2 T and 2 A repeating
TRIANGLE, SQUARE, RECTANGLE TRIANGLE, SQUARE, RECTANGLE
it repeats the same pattern
Which two political parties participated in the Election of 1828?
Democratic Republicans and National Republicans
incumbent President John Quincy Adams and chief rival Andrew Jackson
Also know as the republican and demacric