<span>Before sneezing and or coughing you can experiences a brief moment of apnea. This is when your body pauses before the sneeze or cough and you are without breath. It is hard to control your breath during this moment before you sneeze or cough. This is the only word that is described as a suspension of breath.</span>
<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>
</span>
Answer:
Pros: solar energy is renewable, abundant, and eco friendly
cons: expensive and requires space
Explanation:
11.
A. 1380 kcal
B. 138 kcal
C. 13.8 kcal
12. They are released as heat
Deoxyribonucleic Acid, or DNA is in the shape of a double helix
