Q: Which of the following reactions is an example of a hydrolysis reaction?

$$CD + H_2O \rightarrow COH + HD + \text{energy}$$

Question 1

Which of the following best describes a covalent bond?

Accepted Answer

A bond formed by the sharing of electron pairs between atoms.

Question 2

Which chemical reaction is represented by the following equation? $$A + B \rightarrow AB$$

Accepted Answer

Synthesis reaction

Question 3

A patient is suffering from dehydration. Which property of water is most important in helping the body maintain temperature homeostasis during this condition?

Accepted Answer

High heat of vaporization

Question 4

Which of the following is an example of an inorganic compound found in the human body?

Accepted Answer

Water ($$H_2O)$$

Question 5

What is the main difference between anabolism and catabolism in metabolism?

Accepted Answer

Anabolism builds large molecules from smaller ones; catabolism breaks down large molecules into smaller ones.

Question 6

Which of the following best explains why sodium chloride ($$NaCl) $$forms an ionic bond?

Accepted Answer

Sodium donates an electron to chlorine, resulting in oppositely charged ions that attract each other.

Question 7

Which of the following reactions is an example of a hydrolysis reaction?

Accepted Answer

$$CD + H_2O ightarrow COH + HD + 	ext{energy}$$

Question 8

Which property of water allows it to dissolve many different substances in the body?

Accepted Answer

Water is a small polar molecule.

Question 9

A solution contains $$HCl$$ and $$NaOH. $$What type of reaction occurs when they are mixed?

Accepted Answer

Exchange reaction

Question 10

Which of the following best describes a hydrogen bond?

Accepted Answer

A weak attraction between the electropositive hydrogen of one molecule and the electronegative atom of another molecule.

Question 11

Which of the following is true about acids when dissolved in water?

Accepted Answer

They dissociate into hydrogen ($$H^+) $$ions and one or more anions.

Question 12

Which of the following best explains the role of water in transporting substances throughout the body?

Accepted Answer

Water's polarity allows it to dissolve and carry many different substances.

Question 13

Which of the following is a product of a dehydration synthesis reaction?

Accepted Answer

Water ($$H_2O)$$

Question 14

Which of the following statements about salts is correct?

Accepted Answer

Salts dissociate into ions other than $$H^+ or$$ $$OH^- in $$water.

Question 15

A student mixes $$NaOH$$ and $$HCl in a $$beaker. Which equation best represents the reaction that occurs?

Accepted Answer

$$NaOH + HCl \rightarrow NaCl + H_2O$$

Question 16

Which of the following is a characteristic of organic compounds?

Accepted Answer

They contain carbon and typically covalent bonds.

Question 17

Which of the following best describes the energy flow in coupled chemical reactions in human metabolism?

Accepted Answer

Energy released from an exergonic reaction drives an endergonic reaction.

Question 18

Which of the following is NOT a major organic compound found in the human body?

Accepted Answer

Salts

Question 19

Which of the following best explains why water is essential for chemical reactions in the body?

Accepted Answer

Water provides a medium in which chemical reactions can occur, including hydrolysis and dehydration synthesis.

Question 20

Which of the following is true about decomposition reactions in the body?

Accepted Answer

They break down large molecules into smaller units and release energy (exergonic).

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