Answer:
For your first paragraph: While James Watson and Francis Crick are credited with discovering the structure of DNA, they would not have been able to do it on their own. Without photo 51, taken by Rosalind Franklin using X-ray chromatography, they would not have known that the shape was a double helix. Chargaff discovered that in DNA the number of guanine units is equal to the number of cytosine units, and the number of adenine units is equal to the number of thymine units. This hinted at the base pair makeup of DNA.
Explanation:
For your first paragraph talk about the first prompt (What were the key contributions of the scientists involved in the discovery of the structure?). Watson and Crick were given the Nobel prize for there discovery of DNA's structure but Rosalind Franklin got a picture that proved the double helix, and Chargaff discovered that adenine went to thymine, and guanine went to cytosine.
Which habitat is known for many species of birds, monkey, snakes, lizards, frogs, and insects
Answer:
Tropical rain forest
Explanation: It supports a wide variety of species than any other biome. It is because it provides continuous water supply, constant warmth and a variety of food for the animals. Small animals like rodents, lizards, birds, snakes, frogs are common in this forest. Tall tress are used as shelter and also as source of food.
The tropical rainforest is the habitat known for a wide range of animals including birds, monkeys, snakes, and insects. This biodiversity-rich environment supports numerous species. The canopy is particularly important for bird species.
The habitat that is known for many species of birds, monkeys, snakes, lizards, frogs, and insects is the tropical rainforest. Tropical rainforests are incredibly biodiverse. They are home to a wide range of animals including numerous insect species, small mammals like bushpigs and bushbucks, and larger mammals such as monkeys and leopards. The canopy of the rainforest provides a perfect habitat for birds such as pigeons, eagles, and the Knysna Loeries.
Maria formed which of the following?
A. Basaltic Lava
B. Lunar Regolith
C. Ancient Water Erosion
D. NONE OF THE ABOVE
Maria formed Basaltic Lava.
A ... Basaltic Lava seems like the best answer based on what I found on the lunar maria.
How many electrons are in this atom?
B there is 7 electrons
An atom of nitrogen has (B) seven electrons.
In an atom in neutral state, number of electrons are equal to the number of protons. Since nitrogen has an atomic number of 7, which indicates the number of protons in its nucleus, it also has seven electrons to balance the positive charge of the protons and maintain an overall neutral charge.
Electrons are subatomic particles carrying a negative electrical charge. It is one of the fundamental particles that make up atoms, along with the protons as well as the neutrons. Electrons are a part of the family of elementary particles known as leptons. The movement of electrons within materials is responsible for electrical current flow and the generation of electromagnetic fields.
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What are biotic factors associated with ecosystems?
A) temperature, animals and grass
B) temperature, animals and water
C) animals, grass, and decomposers
D) animals, grass and soil nutrients
if not very sorry i was wrong
Answer:B) temperature, animals and water !
Explanation:
biotic factors are all of the living things in an ecosystem, such as plants and animals. ... These organisms, mostly animals, eat producers and/or other animals. They may also eat decomposers.
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What are all the possible combinations of alleles that each F1 parent can pass onto the offspring
Answer:
AA , Aa , Aa and aa
Explanation:
AA X aa gives 4 Aa (F1)
When F1 is crossed Aa x Aa gives AA ,
2 Aa and aa (F2 generation)
Each F1 heterozygous parent can pass one of four allele combinations to the F2 generation: YY, Yy, yY, and yy, leading to a 1:2:1 genotypic ratio and a 3:1 dominant to recessive phenotypic ratio.
Explanation:To understand the combinations of alleles each F1 parent can pass onto their offspring, it's helpful to use a Punnett square for visualization. In a monohybrid cross of a heterozygous (Yy) F1 individual, there are four potential allele combinations for the F2 generation: YY, Yy, yY, and yy. When analyzing the genotypes, it turns out there are two ways to get a heterozygous (Yy) result, which are counted separately. However, since Yy and yY are identical, we combine them, resulting in three genotypes with a ratio of 1:2:1 (YY:Yy:yy).
This ratio supports the observed 3:1 phenotypic ratio seen by Mendel, due to the YY and Yy genotypes both presenting the dominant phenotype (for example, yellow peas), while the yy genotype displays the recessive phenotype (e.g. green peas). Each allele combination happens due to the equal segregation of alleles during gamete formation and the random nature of fertilization. The expected phenotypic ratio, applying the sum of probability, is therefore 3 dominant:1 recessive.
____ is the increase in eficiency gained by producing more output without using more inputs
Technological progress will be the answer. :)
Technological Progress is the increase in efficiency gained by producing more output without using more inputs.
Technological progress is an economic function that serves to explain changes in economic output in relation to technological advances and progress.
are special instructions that come from an organism’s parents
Answer:
genes are special instructions that come from an organism's parents. (sorry about repeating your question the minimum amount of letters and stuff i can type is 20.)
Consider this plant cell.Which organelle is labeled A
Answer:Its the Vacuole
Explanation:
Birds that do not receive adequate nutrition during development sing less often and for shorter periods of time as adult birds. Which BEST describes the outcome of nutritional stress in these songbirds?
They are less likely to obtain good nesting sites.
They are less likely to attract mates and pass on their genes.
They are less likely to find adequate food supplies.
They are less likely to ward off predators.
Answer: i believe it is b, they are less likely to mate
Answer:
They are less likely to attract mates and pass on their genes.
Explanation:
The singing of birds uses a lot of energy from their bodies, for this reason, birds that do not eat properly tend to sing less often to save the little energy they have. However, birds only sing when they have motives and the main reason for this song is to attract reproductive partners for mating. With this, we can conclude that if the bird does not eat well, it will have little energy and will not have frequent frequency, so it will be less likely to attract partners and transmit its genes.
Throughout the year, these animals sing more in the spring. This period is the breeding season for birds, who wish to demarcate territory and attract females. In the following season, the summer, the chicks are born, and the singing decreases. In addition to not wanting to attract unwanted visitors to the nest, both the male and the female are totally focused on raising the young.
Which carbohydrate provides energy for cows but only dietary fiber for humans?
Great Question!
The answer is Cellulose. It does not provide calories/energy. The human digestive tract cannot break it down, so it is indigestible in humans.
Which is most likely an example of a vestigial structure
Answer
the human appendix, the pelvic bone of a snake, and the wings of flightless birds.
Explanation:
The human appendix is an example of vestigial features.
Why is human appendix considered a vestigial structure?The human appendix can be called a vestigial organ because it has been proven that removing it after childhood causes no harm. However, in humans, the appendix has evolved to the point where it is strategically located at the intersection of the midgut and hindgut.Appendixes were employed for digestion by prehistoric humans, who were mostly herbivores. However, as humans progressed, they began to consume more easily digestible foods, and the appendix finally lost its ability to function.learn more about vestigial structure here:
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Energy can be _____ or _____,but can be refused
Answer:
Transferred or transformed.
Explanation:
This is one of the fundamental laws regarding energy and its existence. You cannot create it, you cannot destroy it, you only transform it to another energy type or transfer it to another body (object / entity).
Hope it helped,
BiologiaMagister
Answer:
Energy can be Transfered or transformed, but can be refused
Arrange the parts of the respiratory tract in a sequence that accurately represents the flow of air after a person inhales.
pharynx
trachea
bronchi
nasal cavity
larynx
Answer
Nasal cavity
Larynx
Pharynx
Trachea
Bronchi
Answer:
Nasal cavity, pharynx, larynx, trachea and bronchi.
Explanation:
Respiration may be defined as the process of the exchange of gases between the external environment, lungs and tissues. Oxygen is inhaled in and carbon dioxide is exhaled out from the body.
The first passage way of oxygen is the nasal cavity. From the nasal cavity, the air is passed to the pharynx. Pharynx is also known as the throat of the body. From the pharynx, the air is passed to the layrnx. Larynx is the voice box. The air is then passed to the trachea or the wind pipe. From the trachea, the air is passed into the lungs that contains the small branches called bronchi. From brochi to the alveoli and finally into the body tissues.
Thus, the answer is nasal cavity, pharynx, larynx, trachea and bronchi.
Which step of scientific inquiry involves organizing and interpreting the data?
a. Experimentation
b. Analysis
Conclusion
d. Hypothesis
Please select the best answer from the choices provided
0000
Answer:
Analysis
Explanation:
This is the process of analyzing and organizing data in tables, graphs, etc. A. experimentation is wrong because it is testing your hypothesis. You take data from experimentation. D. hypothesis is wrong because a hypothesis means thinking of what you THINK will happen in your experiment using an if, then statement. hope this helped!
which sentence describes how an animal might interact with the abiotic factors in its environment?
it consumes producers
it inhales oxygen
it is part of the food web
it is degraded by decomposers
Answer:
It inhales oxygen
Explanation:
Answer: Option b
Explanation: The sentences that describes the interaction of the animals with the abiotic components of the environment is that the animals inhales the oxygen from the atmosphere.
This atmosphere is a abiotic factor. The inhalation of the oxygen by the animals in the environment is how the abiotic and biotic components interact with each other.
How would seasons on Earth differ if Earth's axis was at a 90 degree angle relative to its orbit?
Seasons on Earth would not be affected.
The entire planet would experience the same season at any given time.
There would be no seasons anywhere on Earth.
It would always be summer at the equators and winter at the poles.
Answer:
There would be no seasons anywhere on Earth
Explanation:
If the Earth's axis was not tilting and it was at a 90 degrees angle relative to its orbit, then the seasons on Earth would disappear. The climate on the planet would be defined by the latitude. The equator and the areas close to it would always have summer, as they will receive direct sunlight throughout all of the year. The mid-latitudes will always have temperate climate, reminding of spring and autumn, as the sunlight will not be very direct, but it will also not be very dispersed, jut enough to create a constantly pleasant climate. The higher latitudes will always have winter, as the sunlight will come at a very low angle throughout all of the year, thus it will be very dispersed, not enough to ever warm this parts enough, so they will constantly be under ice.
Answer:
The entire planet would experience the same season at any given time.
Explanation:
Due to the tilt, some parts of the earth will be tilted towards the earth at a particular point in the orbit while others will be tilted away from the sun. This means the amount of sunlight reaching these points is differential. This also changes dynamically, more pronounced in the poles, as the earth revolves around the sun. Without the tilt, this phenomenon would not be therefore and there would be no changes as the earth revolves around the sun.
How does the immune system work together with the circulatory system to function properly?
A.
The circulatory system's arteries cause the immune system to work harder by bringing oxygen-depleted blood to the infection site.
B.
Red blood cells released by immune cells cause increased blood flow to the infection site; this increased blood flow brings other red blood cells to the area more quickly.
C.
White blood cells move through the body (to parts where they are needed) in the blood vessels of the circulatory system to destroy pathogens.
D.
The immune system's red blood cells fight and destroy foreign antigens.
Question Resources
The immune system functions in conjunction with the circulatory system by having white blood cells travel through blood vessels to areas where they are needed to destroy pathogens. Therefore, the correct option is C.
Explanation:The immune system and the circulatory system work together intricately to maintain body health. White blood cells (leukocytes), including monocytes and lymphocytes, are a crucial part of the immune system. These cells travel throughout the body via the blood and lymphatic systems as part of the circulatory system to detect and fight pathogens. The correct choice that describes how these two systems collaborate is:
C. White blood cells move through the body (to parts where they are needed) in the blood vessels of the circulatory system to destroy pathogens.
The circulatory system also transports nutrients that are vital for the immune system's proper functioning and aids in removing waste products created by the immune system during the fight against invaders.
Which organism would be at the bottom of a food pyramid?
A.
grasshopper
B.
tomato plant
C.
rabbit
D.
coyote
Answer:
B) tomato plant
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which of the following can be considered an ecosystem?
the community of organisms within a desert
an entire desert including abiotic factors
a population of fish in a small lake
the wood of a rotting log
Answer:
an entire desert including abiotic factors
Explanation:
An ecosystem includes all living (biotic) and nonliving (abiotic) factors in an area that interact, therefore an entire desert including abiotic factors can be considered an ecosystem. The living community within a desert, the population of fish in a small lake, and a rotting log are all examples of an ecosystem due to their combined biotic and abiotic components.
Given the options presented in the question, an entire desert including abiotic factors can be considered an ecosystem. This is because the term ecosystem applies to a natural unit consisting of all the living organisms in an area functioning together with the nonliving physical factors of the environment. A community of organisms within a desert or a population of fish in a small lake both represent biotic communities, while the wood of a rotting log can also be classified as an ecosystem due to the interacting species and abiotic factors present.
James wants to create a self-sustaining ecosystem, or vivarium. Which method would most likely result in an ecosystem that is viable for the longest amount of time with no additional care?
Answer:
Put soil water many plants and a few insects in a sealed clear plastic aquarium place it in an area with direct sunlight.
Answer:
D. Put soil, water, many plants, and a few insects in a sealed, clear plastic aquarium. Place it in an area with indirect sunlight.
Explanation:
edge 2020
Which of the following about carbon sinks is not true? a. They emit more carbon than they take in. b. They take in more carbon they emit. c. They store carbon from the atmosphere. d. They include oceans and forests.
Answer:
a. They emit more carbon than they take in
Explanation:
The carbon sinks are basically the natural storage for carbon. The oceans and the forests are some of the carbon sinks, and are the two of the biggest. They have the ability to take in more carbon than they emit back into the atmosphere, thus they are actually keeping the greenhouse effect under control and not letting it increase significantly. A perfect example for carbon sinks are the deposits of coal that the humans have been using since the industrial revolution intensively. The coal is made out of the trees that existed in the Carboniferous, hundreds of millions of years ago, and that carbon was stored deep inside the ground for all that time until the humans intervened.
The statement that carbon sinks emit more carbon than they take in is not true. Carbon sinks, like oceans and forests, absorb more carbon than they emit, serving as a significant part of the carbon cycle.
Explanation:In regards to carbon sinks, statement a: 'They emit more carbon than they take in.' is not true. A carbon sink is an environment that absorbs more carbon than it releases. Examples of carbon sinks are the oceans and forests. They absorb carbon from the atmosphere and store it, thereby regulating carbon in the atmosphere and helping to counteract emissions of carbon dioxide and other greenhouse gases.
Through the process of photosynthesis, forests convert carbon dioxide into organic carbon and release oxygen back into the atmosphere. Oceans, on the other hand, absorb vast quantities of carbon dioxide from the atmosphere and store it, both on the surface and in deep sea sediments.
It's important to note that while carbon sinks can absorb and store carbon, they do not emit more carbon than they absorb, which is a characteristic of carbon sources, not sinks. Carbon sources include volcanic activity and human activities like burning fossil fuels.
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A forest fire destroys an area A small population of trees and a large population of birds are both affected. Which type of
limiting factor causes this?
Odensity dependent
Odensity independent
population dependent
population independent
Save and Exit
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Submit
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Answer:
Density independent.
Explanation:
Density independent factors refer to the limiting factors that affect the population is the same way regardless of the size of the population. It could be natural disasters, unusual weather and human activities such as clear cutting forests.
Answer:
Density independent
Explanation:
The limiting factor shown in the question above is independent of deity.
The term density-independent limiting factor is used in ecology, along with the deity-dependent factor to describe growth-limiting factors in a population. When a factor causes changes in the birth and death rates of a population it means that it is a density dependent factor, since it interferes with the population density.
However, when population mortality and birth rates are modified without changing the size of the population, the density of that population is not modified and this is an density independent factor.
What molecule is essential to regenerate at the end of the Krebs cycle to start the process again
Answer:
Oxaloacetate
Explanation:
Throughout the citric acid cycle, in the matrix of the mitochondria, the 4 carbon molecule is transformed (through the addition and removal of carbon atoms) and ultimately regenerated before the beginning of another cycle. During this transformation of oxaloacetate, some intermediate products are of a lower energy level than their predecessors hence making the process energetically favorable. The energy difference is capture is energy molecules such as NADH. FADH₂, and ATP.
Protists aren't monophyletic, meaning that they don't
A. share one common ancestor that isn't also shared by organisms in other groups.
B. have one mode of reproduction.
C. have one chromosome.
D. live their lifespan in one place but instead can move.
Answer:
A. They don’t share ancestors with other organism in the same grouping. Protists belong in a paraphyletic group
Answer:
A. share one common ancestor that isn't also shared by organisms in other groups.
Explanation:
A monophyletic group includes all the descendants of an ancestral species. On the other hand, a paraphyletic group includes some descendants of a common ancestor. Protists are not monophyletic as they share a common ancestor with other groups. Hence, protists are said to be paraphyletic. Mammals are monophyletic as all the mammals share a common ancestor which is not shared by organisms of any other groups.
In order for a hypothesis to become a theory, scientists MUST _____.
scientists MUST test the hypothesis several times and if they keep getting the same results, it is now considered a theory.
The last dinosaur was found in the rock layers at the end of he Mesozoic era . In what epoch will you find the last dinosaur fossils
You will find them in the Late Cretaceous Epoch
Answer:
B) Late Cretaceous Epoch
Explanation:
Which of the following describes symbiotic mutualism? A: one organism benefits , B; one orgamisn is harmed , C; both organisms benefit , D; both organisms are harmed
Answer:
c. both organisms benefit
Explanation:
Answer:
c
Explanation:
Which of the following best shows the way the moon will look four weeks later?
Answer:
Can you add a picture?
Explanation:
what type of population growth is at risk for a population crash? explain why
Answer:
exponential growth, it will exceed the carrying capacity of its environment and then the population will crash down to or below it and continue a boom and bust cycle.
gimme brainliest please !! :)The population which have an exponential growth rate is at high risk for a population crash as the population grows at a very fast rate and reaches the carrying capacity which will lead to decline in the population.
What is Population growth?
The growth of a populations can be explained by the two main models which explains how the population size changes over time. The models are exponential growth and logistic growth model.
Population growth depends upon the size of a population, with the main factors including fertility rates, mortality rates, initial age profile of the population and migration of species from a population.
The main causes of a population crash include the scarcity of environmental resources which are required for the survival, growth and reproduction of a population, predation, and waste accumulation in the ecosystem. Population crash can also be caused by an initially overpopulated group of species and by the competition between the members of a species.
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Which is not an ocean resource?
Answer:
plastics
Explanation:
ocean is the most valueable resources from the earth .At least even somenon ocean resources vegetables are also related to ocean. Most of fish are also related to ocean.
But as my thought plastics are the
Hello. This question is incomplete. The full question is:
"Which of the following is not an ocean resource
a- sand b- common table salt c- natural gas d- silver"
Answer:
d- silver
Explanation:
Silver is not an oceanic resource, but a mineral, a metal, a chemical element that can be found on the Earth's surface. As silver is a mineral, we cannot call it an oceanic resource, but rather a mineral resource.
A mineral resource is an inorganic substance, such as silver. There are other mineral resources such as iron, aluminum, manganese, sulfur, among others.