Question 1

Which of the following best describes the difference between anatomy and physiology?

Accepted Answer

Anatomy studies the form and structure of body parts, while physiology studies the functional processes and mechanisms of body systems.

Question 2

A patient presents with a burn that has destroyed the epidermis and part of the dermis. Which body system is primarily affected, and what is its main function?

Accepted Answer

Integumentary system; protection and maintaining boundaries

Question 3

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

Accepted Answer

Release of oxytocin during childbirth to intensify uterine contractions

Question 4

Which directional term best describes the position of the heart relative to the lungs?

Accepted Answer

Medial

Question 5

A molecule of glucose ($$C_6H_{12}O_6$) is broken down in the cytoplasm of a cell to produce ATP. Which process is this, and what type of reaction does it represent?

Accepted Answer

Glycolysis; exergonic reaction

Question 6

Which of the following best explains why phospholipids form bilayers in water?

Accepted Answer

Phospholipids are amphipathic, with hydrophilic heads and hydrophobic tails, causing them to arrange with heads facing water and tails away.

Question 7

A cell is placed in a solution and swells until it bursts. What type of solution is this, and what is the direction of water movement?

Accepted Answer

Hypotonic; water moves into the cell

Question 8

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

Accepted Answer

Mitochondrion

Question 9

Which of the following best describes the function of the sodium-potassium pump ($$Na^+/K^+$$ ATPase) in the plasma membrane?

Accepted Answer

It uses ATP to move $$Na^+$$ out of the cell and $$K^+$$ into the cell against their concentration gradients.

Question 10

Which of the following is a property of water that is critical for maintaining homeostasis in the human body?

Accepted Answer

High heat of vaporization, allowing for effective cooling through sweating

Question 11

A protein loses its three-dimensional structure when exposed to high heat. What is this process called, and what is the consequence for the protein’s function?

Accepted Answer

Denaturation; the protein loses its function

Question 12

Which of the following best describes facilitated diffusion across a cell membrane?

Accepted Answer

Movement of molecules down their concentration gradient through a transport protein, without energy input

Question 13

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

Accepted Answer

Joining two amino acids to form a peptide bond and releasing a water molecule

Question 14

Which of the following is true about the structure of DNA?

Accepted Answer

It is a double helix composed of deoxyribose sugars.

Question 15

A cell needs to import large particles such as bacteria. Which process will it use?

Accepted Answer

Phagocytosis

Question 16

Which of the following best explains why enzymes are necessary for biochemical reactions in cells?

Accepted Answer

Enzymes lower the activation energy, allowing reactions to occur at cell temperatures.

Question 17

Which of the following is a function of the Golgi apparatus in eukaryotic cells?

Accepted Answer

Protein folding and chemical modification for trafficking

Question 18

Which of the following best describes the role of buffers in biological systems?

Accepted Answer

Buffers minimize changes in pH by accepting or donating $$H^+$$ ions.

Question 19

Which of the following is a correct statement about isotopes?

Accepted Answer

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

Unit 1: Introduction to the Human Body, Biochemistry, and Cell Structure & Function

Guida di studio - Domande di pratica

Study guide - Flashcard