Question 1

Which of the following correctly matches the step of cellular respiration with its location in the cell?

Accepted Answer

Electron transport chain — inner mitochondrial membrane

Question 2

During glycolysis, which of the following is produced for each molecule of glucose?

Accepted Answer

2 molecules of pyruvate, 2 NADH, and 2 ATP

Question 3

Which statement best describes the difference between an oxidized and a reduced molecule?

Accepted Answer

An oxidized molecule has lost electrons, while a reduced molecule has gained electrons.

Question 4

Which tissue type is primarily responsible for transmitting electrical impulses throughout the body?

Accepted Answer

Nervous tissue

Question 5

Where would you most likely find epithelial tissue in the human body?

Accepted Answer

Lining the inside of the stomach

Question 6

Which cell type is the main functional unit of muscular tissue?

Accepted Answer

Myocyte

Question 7

A marathon runner relies heavily on which type of muscle fiber, and why?

Accepted Answer

Slow muscle fibers, because they have more mitochondria and are suited for endurance

Question 8

Which of the following best describes the process of absorption in the digestive system?

Accepted Answer

Transporting nutrients from the digestive tract into the bloodstream

Question 9

Which of the following is an essential nutrient?

Accepted Answer

Vitamin C, because the human body cannot synthesize it

Question 10

Where does the chemical digestion of proteins begin, and which enzyme is primarily responsible?

Accepted Answer

Stomach; pepsin

Question 11

Which enzyme is responsible for the chemical digestion of carbohydrates in the mouth?

Accepted Answer

Amylase

Question 12

What is the primary function of alveoli in the human body?

Accepted Answer

Exchanging oxygen and carbon dioxide between air and blood

Question 13

During an action potential in a neuron, what occurs during depolarization?

Accepted Answer

Sodium ions rush into the cell, making the inside more positive

Question 14

Which of the following best describes the difference between rods and cones in the human eye?

Accepted Answer

Rods are responsible for vision in dim light, while cones detect color

Question 15

Which of the following events occurs during meiosis but not during mitosis?

Accepted Answer

Pairing and crossing over of homologous chromosomes

Question 16

A patient is unable to mount an effective antibody response to a bacterial infection. Which immune cell type is most likely deficient?

Accepted Answer

B cells

Question 17

Which of the following best describes the function of connective tissue?

Accepted Answer

Supporting, binding, and protecting other tissues and organs

Question 18

Which of the following is a correct sequence of events during cellular respiration?

Accepted Answer

Glycolysis → Pyruvate Oxidation → Citric Acid Cycle → Electron Transport Chain

Question 19

Which of the following statements about T cells is correct?

Accepted Answer

T cells directly destroy infected or cancerous cells

Question 20

A person consumes a meal high in triglycerides. Where does the chemical digestion of these lipids begin, and which enzyme is primarily involved?

Accepted Answer

Small intestine; pancreatic lipase

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