Question 1

Which of the following best describes the difference between a cation and an anion?

Accepted Answer

A cation has lost electrons and has a positive charge, while an anion has gained electrons and has a negative charge.

Question 2

Which of the following statements about water is CORRECT?

Accepted Answer

Water is the universal solvent because of its polar covalent bonds and ability to form hydrogen bonds.

Question 3

A solution has a pH of 5. What is the hydrogen ion concentration compared to a solution with a pH of 7?

Accepted Answer

It is 100 times higher.

Question 4

Which of the following best explains why saturated fatty acids are solid at room temperature?

Accepted Answer

They have no double bonds, allowing the molecules to pack closely together.

Question 5

Which of the following is a correct sequence for the digestion and storage of carbohydrates from French fries?

Accepted Answer

Starch is digested into glucose, which is then used for energy and stored as glycogen for later use.

Question 6

Which of the following best describes the Law of Mass Action as it applies to protein-ligand binding?

Accepted Answer

If the concentration of either protein or ligand changes, the reaction will shift to restore equilibrium.

Question 7

Which of the following is an example of an allosteric inhibitor?

Accepted Answer

A molecule that binds to a regulatory site and decreases protein-ligand binding.

Question 8

What is the main function of triglycerides in the human body?

Accepted Answer

They serve as a rich source of energy and insulate/protect organs.

Question 9

Which of the following best describes the effect of extreme pH on protein structure?

Accepted Answer

It causes the protein to denature, losing its tertiary structure and function.

Question 10

Which of the following is TRUE about nucleic acids?

Accepted Answer

DNA is responsible for the transmission of genetic information.

Question 11

Which of the following best describes the difference between non-polar and polar covalent bonds?

Accepted Answer

Non-polar covalent bonds involve equal sharing of electrons, while polar covalent bonds involve unequal sharing.

Question 12

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

Accepted Answer

They are the main component of cellular membranes.

Question 13

A patient has a blood pH of 7.25. Which condition does this indicate, and what is a possible consequence?

Accepted Answer

Acidosis; CNS depression that can lead to coma.

Question 14

Which of the following best describes dehydration synthesis?

Accepted Answer

It forms polymers from monomers by removing water.

Question 15

Which of the following is TRUE about protein-ligand binding?

Accepted Answer

Saturation occurs when all binding sites are occupied.

Question 16

Which of the following is an example of an inorganic compound?

Accepted Answer

Water

Question 17

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

Accepted Answer

They conduct electrical currents essential for muscle and neuron function.

Question 18

Which of the following is a property of hydrophilic molecules?

Accepted Answer

They dissolve readily in water due to their polar nature.

Question 19

Which of the following best describes the process of up-regulation?

Accepted Answer

It stimulates protein synthesis in response to a physiological need.

Chemistry Foundations for Anatomy & Physiology: Atoms, Bonds, and Macromolecules

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