Question 1

Which of the following is NOT considered a survival need for humans according to the study materials?

Accepted Answer

Protein

Question 2

Homeostasis is best described as:

Accepted Answer

A ceaseless process of activities in response to stresses in an attempt to maintain equilibrium

Question 3

Which of the following is an example of a positive feedback mechanism in the human body?

Accepted Answer

Blood clotting

Question 4

A molecule of glucose ($$\mathrm{C}_6\mathrm{H}_{12}\mathrm{O}_6) is $$classified as a:

Accepted Answer

Compound

Question 5

Which of the following statements about elements is TRUE?

Accepted Answer

Elements are made up of only one type of atom

Question 6

What is the main difference between a solution and a suspension?

Accepted Answer

Solutions are transparent and particles do not settle out, while suspensions contain visible particles that do settle out

Question 7

Which of the following best describes an ionic bond?

Accepted Answer

A bond formed by the transfer of valence electrons from one atom to another, resulting in oppositely charged ions

Question 8

If an atom gains one or more electrons, it becomes:

Accepted Answer

An anion

Question 9

Which of the following is a correct chemical equation for a decomposition reaction?

Accepted Answer

$$AB \rightarrow A + B$$

Question 10

Which factor would NOT increase the rate of a chemical reaction?

Accepted Answer

Decreasing the amount of catalyst present

Question 11

A solution in which blood plasma is the solvent and glucose is the solute is an example of:

Accepted Answer

A solution

Question 12

Which of the following is TRUE about covalent bonds?

Accepted Answer

They are formed by sharing two or more valence shell electrons between atoms

Question 13

Which of the following is an example of an endergonic chemical reaction?

Accepted Answer

Anabolic reactions that build larger molecules

Question 14

Which of the following best describes the role of enzymes in chemical reactions?

Accepted Answer

They increase the rate of reaction without being chemically changed or becoming part of the product

Question 15

A patient’s blood is tested and found to have a high concentration of ions. Which type of chemical bond is most likely responsible for the formation of these ions?

Accepted Answer

Ionic bond

Question 16

Which of the following is a correct example of an exchange (displacement) reaction?

Accepted Answer

$$AB + C \rightarrow AC + B$$

Question 17

Which of the following statements about mixtures is FALSE?

Accepted Answer

Colloids are homogeneous mixtures

Question 18

Which of the following is NOT a component of a homeostatic control mechanism?

Accepted Answer

Solute

Question 19

If the number of protons in an atom does NOT equal the number of electrons, the atom is:

Accepted Answer

An ion

Question 20

Which of the following best explains why increased temperature usually increases the rate of a chemical reaction?

Accepted Answer

It increases the kinetic energy of molecules, leading to more frequent and forceful collisions

Foundations of Anatomy & Physiology: Homeostasis and Basic Chemistry

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