<span>Enzymes are catalysts, which means that they make chemical reactions go faster, but are not changed by the reaction,</span><span />
Answer:
Mitochondrial DNA accumulates DNA mutations quickly. Because of this, it would be most beneficial in analyzing the ancestral relationship of organisms that are
A. Mitochondrial DNA is beneficial in both of these cases
B. Distantly related
C. Mitochondrial DNA is not used to analyze relationships
D. Closely related
Explanation:
Mitochondrial DNA <em>does not serve to identify individuals without ambiguity</em>, but to detect kinships between groups of individuals; it is then used for comparisons between missing persons and unidentified remains and their relatives.
<u><em>The answer is</em></u>: <u>D. closely related.</u>
<span>8. Chitinase is an enzyme that breaks down the chitin molecules in an insect's exoskeleton. The sequence of amino acids in the chitinase is an example of which level of protein structure?
==> primary
9. The amount of energy needed for a reaction to take place is the activation energy. Enzymes can lower the activation energy of a chemical reaction. Which of the following describes a way that this could happen?
==> Molecules can be brought together so they will bond more easily.
10. What is one way that RNA differs from DNA?
==> It is single-stranded.
11. Which molecule do mammals use to store extra glucose in their muscles?
==> glycogen
12. Which molecule do plants use to store extra glucose?
==> starch
13. Which element is present in all amino acids, but not necessarily in fats or carbohydrates?
==> nitrogen
14. Which statement best describes the role of DNA in the body?
==> It contains genetic information.
15. Which statement best explains how enzymes speed up chemical reactions?
==> Enzymes lower the activation energy of a reaction.</span><span>
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A. It decreases biodiversity by harvesting everything in its path, so that unwanted fish are unnecessarily killed
