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

A solution with a pH of 4 has which of the following characteristics?

Accepted Answer

High concentration of H⁺ ions and is considered acidic

Question 3

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

Accepted Answer

Combining two amino acids to form a dipeptide and releasing water

Question 4

Which of the following statements about biomolecules is correct?

Accepted Answer

Carbohydrates often appear on cell membrane surfaces

Question 5

A triglyceride is composed of which of the following building blocks?

Accepted Answer

One glycerol and three fatty acids

Question 6

Which of the following best explains why enzymes are essential for life?

Accepted Answer

They speed up chemical reactions by decreasing activation energy

Question 7

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

Accepted Answer

Proteins: catalyze biochemical reactions

Question 8

A patient is found to have a blood pH of 7.6. Which of the following best describes their blood?

Accepted Answer

It is alkaline (basic), with a low concentration of H⁺ ions

Question 9

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

Accepted Answer

A long chain of monosaccharides

Question 10

Which of the following best describes the difference between saturated and unsaturated fatty acids?

Accepted Answer

Saturated fatty acids have no double bonds; unsaturated fatty acids have one or more double bonds

Question 11

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

Accepted Answer

It is the starting material for synthesis of vitamin D, steroid hormones, and bile salts

Question 12

Which of the following best describes hydrolysis?

Accepted Answer

The process of breaking a polymer into monomers by adding a water molecule

Question 13

A protein is composed of which of the following?

Accepted Answer

Chains of amino acids held by peptide bonds

Question 14

Which of the following is an example of a fibrous (structural) protein?

Accepted Answer

Collagen

Question 15

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

Accepted Answer

The positive and negative regions of water molecules are attracted to the ions, causing them to dissociate

Question 16

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

Accepted Answer

Nucleic acid: nucleotide

Question 17

A student is asked to identify a molecule that contains carbon, hydrogen, oxygen, and is used for long-term energy storage. Which molecule are they most likely describing?

Accepted Answer

Lipid

Question 18

Which of the following best describes the role of peptide bonds in proteins?

Accepted Answer

They link amino acids together

Question 19

Which of the following is a correct statement about the suffixes used in biomolecule names?

Accepted Answer

The suffix '-ase' is commonly found in the names of enzymes

Question 20

A patient is unable to digest milk sugar (lactose) due to a deficiency in a specific enzyme. Which enzyme is most likely deficient?

Accepted Answer

Lactase

Chapter 2: Chemistry Foundations for Human Anatomy & Physiology

Study Guide - Practice Questions

Study Guide - Flashcards