Why do scientists study proteins to find evidence for evolution

A. The theory could be altered. If new evidence I presented it is the law to take a look at it.

Final answer:

If new evidence challenges a theory, it may lead to the alteration of that theory. This is a key aspect of the scientific method, where theories and hypotheses are continuously tested. The climax of these tests can lead to validation, modification, or discarding of the theory.

Explanation:

If a theory is challenged by new evidence, a possible outcome is that the theory could be altered. In the realm of science, theories are not static; they are dynamic and prone to modifications when new, credible evidence emerges. Theories are always subject to validation and verification. When the theory of evolution was first proposed, for instance, it faced plenty of criticism and disbelief. However, as it was continually supported by emerging evidence, it is now widely accepted.

An assumption or hypothesis is typically tested through experiments. If experimental results contradict the theory or hypothesis, scientists often amend or discard it. This process exhibits that theories aren't absolutes but rather are continually evolving constructs subject to change based on the emergence of new evidence.

This is part of the scientific method, where theories and hypotheses are continuously tested and re-tested using experiments. It's also important to remember that evidence-based science values new findings that can be replicated and verified across multiple experiments, confirming or questioning existing theories.

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Answer:

Acceleration, a = 1.64 m/s²

Explanation:

It is given that,

A rock is dropped on the moon, its initial velocity u = 0 m/s

Its speed increases from 0 to 4.9 m/s, v = 4.9 m/s

Time taken, t = 3 seconds

We have to find the magnitude of the acceleration due to gravity on the moon. The magnitude of acceleration is given by :

Acceleration, a = rate of change of velocity

a = 1.64 m/s²

So, the value of  acceleration of gravity on the moon is 1.64 m/s². Hence, this is the required solution.

Acceleration = (change in speed) divided by (time for the change).

From the figures given in the question, the acceleration is ( 49/3 ) =

16.33 m/sec2

.

There's no way that this is happening on the moon. That acceleration is about 67%

greater

than the acceleration of gravity on the earth's surface. It should be about 83%

less,

or about

1.63 m/sec

2

.

I see the problem now. The '49' in the question should be '

4.9

'.

apex- 1.63 m/s2

Answer:

He discovered the cell nucleus and realized that inside the nucleus there was an unknown chemical substance. That substance was DNA.

Explanation:

Who discovered the DNA was Friedrich Miescher, a Swiss biochemist with great talent. Miescher, using substance precipitation techniques, such as pH changes in the medium, was able to discover and isolate the cell nucleus. Inside the nucleus he was able to isolate a previously unknown substance. It was the nucleic acid, DNA, which, at the moment, with the technology available until then, presented itself only as a white, flocculent precipitate, which Miescher would later call nuclein.

In 1869, Friedrich Miescher isolated "nuclein," DNA with associated proteins, from cell nuclei. He was the first to identify DNA as a distinct molecule. Phoebus Levene was an organic chemist in the early 1900's. He is perhaps best known for his incorrect tetranucleotide hypothesis of DNA.                                

To sum it up the answer is yes.