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3 years ago

Is water or carbon the most important molecule to life? evidence 1: evidence 2:

1 answer:

7 0

the four molecules of life are proteins, carbohydrates, lipids and nucleic acids. Each of the four groups is vital for every single organism on Earth. Without any of these four molecules, a cell and organism would not be able to live. All of the four molecules of life are important either structurally or functionally for cells and, in most cases, they are important in both ways.

this is what i have about this

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(NEED HELP ASAP) BRAINLIEST NO FAKE ANSWERS

konstantin123 [22]

Answer:

scientist is attempting to build a cladogram that shows the evolutionary closeness of three organisms in relation to humans. After doing DNA analysis, they determine that the organisms share the following percentages of DNA:

Organism A and humans share 85% of their DNA.

Organism B and humans share 80% of their DNA.

Organism C and humans share 90% of their DNA.

Based on this information, which order should they go on the cladogram (from least related to most related)?

(1 point)

A, B, C, humans

C, B, A, humans

C, A, B, humans

B, A, C, humans

2.A cladogram shows the evolutionary relationship between humans, chimpanzees, and gorillas. The cladogram currently shows humans and chimpanzees with a more recent common ancestor compared to gorillas. Which piece of evidence, if true, would most likely weaken this hypothesis?(1 point)

Fossils of humans appear in deeper sedimentary rock layers compared to fossils of chimpanzees.

Amino acid analysis of the cytochrome c protein shows significant differences in the sequence of amino acids between humans and gorillas.

DNA sequence analysis of the hemoglobin alpha gene shows that humans and chimpanzees have a more similar sequence to each other than they do to the gorilla’s DNA sequence.

The cells of the eye in embryos of gorillas and humans follow a similar pattern of development while chimpanzee embryos are different.

3.The forelimbs of bats and humans have a very similar bone structure even though they appear very different on the outside. These structures are known as __________ because they result from species evolving __________.

Which of the following answer choices correctly completes the above statement?

(1 point)

homologies; similar adaptations in similar environments

analogies; from the same common ancestor

analogies; similar adaptations in similar environments

homologies; from the same common ancestor

4.All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about vertebrates?(1 point)

The embryos of these species require these structures to survive.

These species evolved in similar environments.

These species have the exact same DNA sequence.

These species share a common ancestor.

5.Fossil A is found closer to the surface compared to Fossil B. Which of the following conclusions can be made based on this statement?(1 point)

Fossil A is from an older species than Fossil B.

The species of Fossil A existed at the same time as the species of Fossil B.

The species of Fossil A evolved from the species of Fossil B.

Fossil B is most likely older than Fossil A.

6.Vertebrate embryos all follow a very similar developmental process. Which statement could explain this similarity?(1 point)

All vertebrates require the same nutrients during embryological development.

All vertebrates develop a backbone that protects the spinal cord.

All vertebrates inherit the same sequence of DNA from their parents.

All vertebrates live in similar environments which require the same adaptations.

7.Some mutations, or changes in the sequence of DNA, do not have any effect on the characteristics of the organism. Why is this?(1 point)

The immune system repairs the mutated sequence during development.

The protein built from this mutated sequence is deactivated by the cell.

The mutated sequence still codes for the same amino acid.

The cell recognizes mutations and ignores them when expressing the gene.

8.What is typically studied when analyzing not-yet-born (or unhatched) animals?(1 point)

embryological development

evolutionary theory

causal records

DNA sequencing

9.What can scientists analyze to get a better understanding of how plants and animals evolved from a common ancestor?(1 point)

petrified bones and imprints of plants

DNA molecules

vertebrate embryos

life cycles and behaviors

10.How can embryos help scientists understand evolution?(1 point)

Embryos contain the code for all life on Earth.

Embryos go through various stages that suggest the animal’s evolutionary process.

Embryos provide evidence for which life forms existed at the same time.

Embryos are frequently fossilized and illustrate change over time.

11.Astronomers have made great strides in sending probes out to other planets and moons in our solar system. If they were to find a living creature some place other than Earth, how could DNA analysis help them better understand the organism? Explain in 1–2 sentences.(2 points)

12.In 1973, biologist Theodosius Dobzhansky wrote an essay titled “Nothing in Biology Makes Sense Except in the Light of Evolution.” Why is evolution so important for understanding biology? Explain your answer in 1–2 sentences.(2 points)

13.You are a scientist tasked with writing a journal article on the evolution of alligators. In 3–5 sentences, describe the different forms of evidence you might use to analyze the evolution of alligators.(4 points

4 0

3 years ago

Read 2 more answers

Why do you suppose there is that 42-mile difference?

Alex17521 [72]

Answer:

The earth rotates on the axis that passes through the north and the south of the planet and is of 24-hour duration. Similar to that of the rotation of the moon which is sideral, this rotation is in the anticlockwise direction. And this originated by the angular movement of the clouds of the dust and gases that have coalesced to for the solar system.

Thats answer is something else i think since your going up its much more faster then going around equator sin earth rotates on its axis

\Explanation:

6 0

4 years ago

Read 2 more answers

This is the stage of meiosis or mitosis when chromosomes separate to the opposite ends of the cell.

xenn [34]

That would be the third (or second, if you don’t count prophase) step of mitosis, anaphase.

8 0

3 years ago

A research study quantifies the fitness of individuals that defend territories of different size and finds that individuals that

DedPeter [7]

<span>The research outcome that individuals that defend a territory of 10 m2 have the highest fitness is an example of u</span>ltimate explanation of territorial behavior.
The term territorial behavior denotes the methods by which an animal, or group of animals, defend its territory from incursions in certain territorial boundaries. The territorial boundaries define <span>the area in which the animals live and on which they depend for resources.</span>

7 0

3 years ago

Edema occurs when____________

Maksim231197 [3]

Answer:

A) areolar tissue soaks up excess fluid in an inflamed area

Explanation:

Areolar tissue is found around blood vessels, muscles, nerve bundles. Edema which is also a part of inflammation occurs when blood capillaries of blood vessels leak the fluid and is soaked by areolar tissue. So excess fluid in these tissue cause swelling of that part.

Edema is one type of defense reaction to the cell injury. With fluid white blood cells and defense proteins move in the area and counter the infectious agent of injury and helps in eliminating the injurious factor. So the correct answer is A.

4 0

3 years ago