3 Na\textsuperscript{+} out, 2 K\textsuperscript{+} in

Question 1

Which of the following best describes the role of a placebo in a scientific experiment?

Accepted Answer

It provides a baseline to compare the effects of the experimental treatment.

Question 2

A researcher is testing the effect of a new drug on blood pressure. What is the dependent variable in this experiment?

Accepted Answer

The blood pressure measured after treatment

Question 3

Which of the following graphs would best represent a negative correlation between two variables?

Accepted Answer

As one variable increases, the other variable decreases.

Question 4

Which of the following is NOT a characteristic that defines living organisms?

Accepted Answer

Ability to undergo spontaneous combustion

Question 5

Which of the following best describes a negative feedback loop in the human body?

Accepted Answer

A process that reverses a change and restores balance

Question 6

Which of the following elements is most abundant in living organisms?

Accepted Answer

Carbon (C)

Question 7

Which equation correctly represents the hydrolysis of a disaccharide?

Accepted Answer

$C_{12}H_{22}O_{11} + H_{2}O \rightarrow 2C_{6}H_{12}O_{6}$

Question 8

Which property of water allows it to dissolve many substances, making it an excellent solvent?

Accepted Answer

Its ability to form hydrogen bonds

Question 9

A solution has a pH of 3. Which of the following best describes this solution?

Accepted Answer

It is acidic.

Question 10

Which organelle is primarily responsible for detoxifying harmful substances in the cell?

Accepted Answer

Smooth endoplasmic reticulum

Question 11

Which of the following best describes the arrangement of phospholipids in a cell membrane?

Accepted Answer

A bilayer with hydrophilic heads facing outward and hydrophobic tails facing inward

Question 12

Which process requires energy input from the cell to move substances against their concentration gradient?

Accepted Answer

Active transport

Question 13

If a red blood cell is placed in a hypotonic solution, what will happen to the cell?

Accepted Answer

It will swell and may burst due to water influx.

Question 14

Which ions are moved by the sodium-potassium pump, and in which direction?

Accepted Answer

3 Na	extsuperscript{+} out, 2 K	extsuperscript{+} in

Question 15

Which type of microscope provides the greatest magnification and resolution for viewing internal cell structures?

Accepted Answer

Transmission electron microscope (TEM)

Question 16

Which of the following best describes the difference between potential and kinetic energy in cells?

Accepted Answer

Potential energy is stored in chemical bonds, while kinetic energy is energy of motion.

Question 17

Which equation represents the hydrolysis of ATP to release energy in cells?

Accepted Answer

$ATP + H_{2}O ightarrow ADP + P_{i} + 	ext{energy}$

Question 18

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

Accepted Answer

$C_{6}H_{12}O_{6} + C_{6}H_{12}O_{6} \rightarrow C_{12}H_{22}O_{11} + H_{2}O$

Question 19

Which organelle is responsible for packaging and modifying proteins for secretion?

Accepted Answer

Golgi apparatus

Question 20

A cell is observed to have many free ribosomes and few bound ribosomes. What is this cell likely specialized for?

Accepted Answer

Synthesizing proteins for use within the cytoplasm

Foundations of Anatomy & Physiology: Scientific Method, Chemistry of Life, Cells, and Transport

Study Guide - Practice Questions