Question 1

Which imaging technique is most useful for visualizing soft tissue structures in the human body, such as the brain, due to its use of powerful electromagnetic fields?

Accepted Answer

Magnetic Resonance Imaging (MRI)

Question 2

A patient is experiencing low blood glucose levels. Which physiological feedback mechanism will most likely be activated to restore homeostasis?

Accepted Answer

Negative feedback loop, causing the release of glucagon to increase blood glucose

Question 3

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

Accepted Answer

Anatomy studies the structure of the body, while physiology studies the dynamic processes in living bodies.

Question 4

Which of the following is a function of epithelial tissue?

Accepted Answer

Secretion of substances such as hormones and enzymes

Question 5

A solution has a pH of 6.5. Which of the following statements is correct?

Accepted Answer

The solution is acidic because its pH is below 7.

Question 6

Which of the following is a correct example of a disaccharide and its components?

Accepted Answer

Sucrose: glucose + fructose

Question 7

Which organelle is responsible for synthesizing proteins from mRNA and assembling amino acids into polypeptide chains?

Accepted Answer

Ribosome

Question 8

A cell is placed in a hypertonic solution. What will most likely happen to the cell?

Accepted Answer

Water will leave the cell, causing it to shrink.

Question 9

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

Accepted Answer

Enzymes lower the activation energy, speeding up chemical reactions.

Question 10

Which of the following is a correct representation of the central dogma of molecular biology?

Accepted Answer

$$DNA \rightarrow RNA \rightarrow Protein$$

Question 11

A mutation causes the substitution of a single amino acid in a protein. Which type of mutation is this?

Accepted Answer

Point mutation

Question 12

Which of the following cell junctions completely encircles an epithelial cell near its apical surface and joins it tightly to neighboring cells, preventing digestive juices from leaking between cells?

Accepted Answer

Tight junctions

Question 13

Which hormone is secreted by the pancreas to lower blood glucose levels after a meal?

Accepted Answer

Insulin

Question 14

Which of the following is a steroid hormone derived from cholesterol?

Accepted Answer

Testosterone

Question 15

Which of the following best describes the function of the cytoskeleton in a cell?

Accepted Answer

Defines cell shape, supports cell structure, and contributes to movement

Question 16

A patient is unable to absorb nutrients properly due to damage in the small intestine. Which cell surface extension is most likely affected?

Accepted Answer

Microvilli

Question 17

Which of the following is a correct sequence of levels of human structure from most complex to least complex?

Accepted Answer

Organism \u003e Organ system \u003e Tissue \u003e Cell \u003e Organelle \u003e Molecule \u003e Atom

Question 18

Which of the following is a function of connective tissue?

Accepted Answer

Binding organs together and providing structural support

Question 19

Which process allows water and small particles to pass through a selectively permeable membrane due to hydrostatic pressure?

Accepted Answer

Filtration

Question 20

Which of the following best describes the role of negative feedback in maintaining homeostasis?

Accepted Answer

It reverses changes, maintaining physiological values within a narrow range.

Unit 1: Anatomy and Physiology – Major Themes, Chemistry of Life, The Cell, and Histology

Guida di studio - Domande di pratica

Study guide - Flashcard