Question 1

Which of the following best describes the difference between a compound and a mixture?

Accepted Answer

Compounds involve chemical bonding between components, while mixtures do not.

Question 2

Which of the following is an example of a colloid found in the human body?

Accepted Answer

Cytosol of a cell

Question 3

Which statement about water is FALSE?

Accepted Answer

Water is a nonpolar solvent, making it ideal for dissolving lipids.

Question 4

Which of the following best explains why blood is considered a suspension?

Accepted Answer

Blood contains large, visible particles (cells) that settle out if left undisturbed.

Question 5

Which of the following is a correct representation of a synthesis (anabolic) reaction?

Accepted Answer

$$A + B \rightarrow AB$$

Question 6

Which property of water allows it to dissolve ionic substances such as NaCl?

Accepted Answer

Polar solvent properties

Question 7

A solution with a pH of 4 has:

Accepted Answer

A higher concentration of hydrogen ions ($$H^+) $$than a solution with pH 7

Question 8

Which of the following is NOT a function of proteins in the body?

Accepted Answer

Storing genetic information

Question 9

Which of the following best describes the structure of a phospholipid?

Accepted Answer

A glycerol backbone, two fatty acid tails, and a phosphate-containing head group

Question 10

Which of the following statements about ATP is correct?

Accepted Answer

ATP is the primary energy-transferring molecule in cells.

Question 11

Which of the following is a correct example of a dehydration synthesis reaction?

Accepted Answer

Glucose + Fructose $$\rightarrow$$ Sucrose + $$H_2O$$

Question 12

Which of the following elements is most abundant in the human body by mass?

Accepted Answer

Oxygen

Question 13

Which of the following best describes the role of buffers in the body?

Accepted Answer

Buffers convert strong acids or bases into weak ones to resist changes in pH.

Question 14

Which of the following is a polysaccharide used for energy storage in animals?

Accepted Answer

Glycogen

Question 15

Which of the following is a function of cholesterol in the body?

Accepted Answer

It is a starting material for synthesis of vitamin D and steroid hormones.

Question 16

Which of the following best describes an exergonic reaction?

Accepted Answer

A reaction that releases energy

Question 17

Which of the following is a correct statement about enzymes?

Accepted Answer

Enzymes increase the rate of chemical reactions without being changed themselves.

Question 18

Which of the following is a characteristic of organic compounds?

Accepted Answer

They contain carbon and are usually covalently bonded.

Question 19

Which of the following best describes the primary structure of a protein?

Accepted Answer

The sequence of amino acids in the polypeptide chain

Question 20

Which of the following is a function of eicosanoids in the body?

Accepted Answer

Regulating inflammation and blood clotting

Basic Principles of Chemistry for Organic Chemistry Students

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