Question 1

Which of the following best describes the anatomical position?

Accepted Answer

Standing upright, facing forward, arms at the sides with palms facing forward, feet slightly apart

Question 2

Which of the following is NOT a level of structural organization in the human body?

Accepted Answer

Atomic

Question 3

Homeostasis is best defined as:

Accepted Answer

The process by which the body maintains a stable internal environment despite changes in external conditions

Question 4

Which of the following is a correct example of a negative feedback mechanism?

Accepted Answer

Regulation of blood glucose by insulin

Question 5

Which of the following is the universal solvent in biological systems?

Accepted Answer

Water

Question 6

If a solution has a pH of 4, which of the following is true?

Accepted Answer

It is an acidic solution with a high concentration of H$$^+.$$

Question 7

Which of the following best describes the difference between a compound and a molecule?

Accepted Answer

A molecule is two or more atoms bonded together; a compound is a molecule that contains atoms of at least two different elements.

Question 8

Which of the following is a function of the plasma membrane?

Accepted Answer

Regulating the movement of substances into and out of the cell

Question 9

Which of the following statements about isotopes is correct?

Accepted Answer

Isotopes have the same number of protons but different numbers of neutrons.

Question 10

Which of the following is true about ATP (adenosine triphosphate)?

Accepted Answer

ATP stores energy in the bonds between its phosphate groups.

Question 11

Which of the following best describes the process of osmosis?

Accepted Answer

Movement of water molecules from an area of low solute concentration to an area of high solute concentration across a selectively permeable membrane

Question 12

Which of the following is a correct example of a covalent bond?

Accepted Answer

H$$_2O ($$water)

Question 13

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

Accepted Answer

Enzymes speed up chemical reactions by lowering activation energy.

Question 14

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

Accepted Answer

Unsaturated fats have double bonds between carbon atoms; saturated fats do not.

Question 15

Which of the following is NOT a major function of proteins in the body?

Accepted Answer

Storing genetic information

Question 16

Which organelle is primarily responsible for producing ATP in eukaryotic cells?

Accepted Answer

Mitochondrion

Question 17

Which of the following statements about DNA and RNA is correct?

Accepted Answer

DNA is double-stranded, while RNA is usually single-stranded.

Question 18

Which of the following best describes the fluid mosaic model of the plasma membrane?

Accepted Answer

A flexible structure with proteins embedded in or attached to a phospholipid bilayer

Question 19

Which of the following is true about active transport?

Accepted Answer

It requires energy, often in the form of ATP, to move substances against their concentration gradient.

Question 20

A patient is given a solution intravenously that is isotonic to their blood plasma. What will happen to their red blood cells?

Accepted Answer

The red blood cells will remain unchanged.

Anatomy and Physiology I: Study Guide for Lecture Exam #1

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