Question 1

Which of the following best describes the correct order of levels of structural organization in the human body, from simplest to most complex?

Accepted Answer

Chemical → Cellular → Tissue → Organ → Organ system → Organism

Question 2

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

Accepted Answer

NaCl (sodium chloride)

Question 3

A solution has a pH of 5. Which of the following statements is true about this solution?

Accepted Answer

It has a high concentration of H$$^+$$ ions.

Question 4

Which process is responsible for joining monomers to form polymers in biomolecules?

Accepted Answer

Dehydration synthesis

Question 5

Which of the following biomolecules is primarily responsible for long-term energy storage and is a major component of cell membranes?

Accepted Answer

Lipids

Question 6

A triglyceride molecule consists of which of the following components?

Accepted Answer

Glycerol + 3 fatty acids

Question 7

Which of the following statements about steroids is correct?

Accepted Answer

Cholesterol is the starting point for synthesis of vitamin D, steroid hormones, and bile salts.

Question 8

Which biomolecule stores genetic information in cells?

Accepted Answer

Nucleic acids

Question 9

Which of the following is a correct match between a biomolecule and its monomer?

Accepted Answer

Nucleic acid – Nucleotide

Question 10

Which type of protein is responsible for speeding up chemical reactions in the body?

Accepted Answer

Enzymes (globular proteins)

Question 11

Which of the following is a correct example of a polysaccharide?

Accepted Answer

Glycogen

Question 12

A patient is found to have a blood pH of 7.8. Which of the following best describes their blood?

Accepted Answer

Alkaline (basic)

Question 13

Which of the following best describes hydrolysis?

Accepted Answer

Breaking apart polymers by adding water

Question 14

Which of the following is a function of collagen in the human body?

Accepted Answer

Providing structural support in skin and connective tissue

Question 15

Which suffix is commonly found in the names of sugars?

Accepted Answer

-ose

Question 16

Which of the following is true about saturated and unsaturated fatty acids?

Accepted Answer

Unsaturated fatty acids have double bonds.

Question 17

Which of the following is the correct formula for calculating pH?

Accepted Answer

$$pH = -\log_{10}[H^+]$$

Question 18

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

Accepted Answer

Storing genetic information

Question 19

Which of the following best explains why water is an effective solvent for salts like NaCl?

Accepted Answer

Water molecules are polar and can surround and separate Na$$^+$$ and Cl$$^-$$ ions.

Question 20

Which of the following is a correct match between a word root and its meaning?

Accepted Answer

glyco – sweet, sugary

Chapter 2: Chemistry and Levels of Structural Organization in Human Anatomy & Physiology

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