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strojnjashka [21]
3 years ago
13

Match each step of the scientific method with its description

Biology
1 answer:
Kisachek [45]3 years ago
4 0

Answer:

Explanation:

Make an observation.

Ask a question.

Form a hypothesis, or testable explanation.

Make a prediction based on the hypothesis.

Test the prediction.

Iterate: use the results to make new hypotheses or predictions.

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A ball is rolling down a hill. At the bottom of the hill, its traveling at 15 m/s. The ball has a mass of 10 kg. What is the kin
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C)1125 J because the formula for kinetic energy is 1/2 multiplied by mass multiplied by volume to the second power. So 1/2 multiplied by 10 multiplied by 15 to the second power is 1125 if that makes since.
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Why do the hydrogen ions and the hydroxide ions form bonds to make macromolecules?
Zigmanuir [339]

Answer: c

Explanation:

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2 years ago
E. coli DNA polymerase III is both highly accurate and highly processive. a) Describe how Pol III avoids the incorporation of im
kogti [31]

Answer/Explanation:

DNA polymerase is the enzyme responsible for replicating DNA. It is hugely important that is performs its functions accurately, as if incorrect bases are incorporated this can lead to mutations that disrupt the structure and function of genes. It adds nucleotides in a 5' - 3' direction only.

DNA polymerase III also has high processivity, which means that for every time it binds DNA, it is able to add many bases before it becomes dissociated.

A. DNA polymerase avoids the incorporation of improperly paired nucleotides in two ways:

  • The first way depends on the structure of the enzyme. If the nucleotide that the enzyme is in the process of adding is not complementary to the template, then the nucleotide will not align with the template, and thus it is more inefficient to add. This inefficiency means the nucleotide is more likely to leave the active site before it is added, and DNA polymerase can replace it with the correct nucleotide.
  • It also has proofreading capabilities. This means, when an incorrect base is added, it recognises the error and can fix this. It can do this because it possesses 3'-5' exonuclease activity. That means, it can chop out incorrectly added bases.

B. Ribonucleotides are the nucleotides that are incorporated into a growing RNA molecule. They are different from deoxyribonucleotides because of the differences in the sugar backbone (ribose vs deoxyribose). Their incorporation would disrupt the structure and function of the DNA, leading to problems with transcription and replication.

DNA polymerase avoids incorporating these nucleotides primarily because of the structure of the enzyme. Ribonucleotides cannot fit into the active site of DNA polymerase due to what is called a "steric filter" or "steric gate". This gate/filter function is performed by specific amino acid residues which usually have a bulky side chain and thus block the incorporation of the 2'OH of the ribose sugar (which is lacking in the deoxyribose sugar)

9 0
3 years ago
Which graph should be used to represent the percent composition of the human body?
ollegr [7]

Answer:

Hey Friend....

Explanation:

This is your answer.....

<h3><em>Pie chart</em></h3>

<em>Use pie charts to compare parts of a whole. They depict a single point in time rather than changes over time. A pie chart can display percent composition, such as the composition of air</em><em>.</em>

Hope it helps!

Brainliest pls!

Follow me! :)

4 0
2 years ago
How can people reduce wind erosion?
Nataly_w [17]
The answer would be c. plant trees around farmland. This is because the trees will protect the soil from being affected by the wind.
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4 years ago
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