$$ATP \rightarrow ADP + P_i + \text{energy}$$

Question 1

Which of the following best describes the function of the sodium-potassium pump in cell membrane physiology?

Accepted Answer

It actively transports three sodium ions out of the cell and two potassium ions into the cell, using ATP.

Question 2

A red blood cell is placed in a hypotonic solution. What will happen to the cell, and why?

Accepted Answer

Water will move into the cell, causing it to swell and possibly burst, because the solution has a lower solute concentration than the cell.

Question 3

Which equation correctly represents the net movement of molecules during simple diffusion?

Accepted Answer

$$J = -D \frac{dC}{dx}$$

Question 4

Which of the following is NOT a characteristic of epithelial tissue?

Accepted Answer

It contains an abundance of extracellular matrix.

Question 5

Facilitated diffusion differs from simple diffusion in which of the following ways?

Accepted Answer

Facilitated diffusion uses carrier or channel proteins to move substances down their concentration gradient.

Question 6

Which type of membrane lines body cavities that are NOT exposed to the outside environment and consists of a visceral and parietal layer?

Accepted Answer

Serous membrane

Question 7

A patient is given intravenous fluids that are isotonic to their blood plasma. What effect will this have on their red blood cells?

Accepted Answer

Red blood cells will remain unchanged because there is no net movement of water.

Question 8

Which of the following is a function of connective tissue?

Accepted Answer

Support and protection of organs

Question 9

Which process requires energy and moves molecules against their concentration gradient?

Accepted Answer

Active transport

Question 10

Which of the following best describes the structure of the plasma membrane?

Accepted Answer

A phospholipid bilayer with embedded proteins and a superficial glycocalyx

Question 11

Which type of epithelial tissue is specialized for secretion and makes up glands?

Accepted Answer

Glandular epithelium

Question 12

Which of the following is TRUE about synovial membranes?

Accepted Answer

They consist mostly of areolar tissue and secrete synovial fluid for joint lubrication.

Question 13

Which equation best represents the energy requirement for active transport?

Accepted Answer

$$ATP ightarrow ADP + P_i + 	ext{energy}$$

Question 14

Which of the following is NOT a primary tissue type?

Accepted Answer

Glandular

Question 15

Which of the following scenarios best illustrates endocytosis?

Accepted Answer

A cell engulfs a bacterium by surrounding it with its membrane and forming a vesicle.

Question 16

Which of the following is a correct statement about the basement membrane in epithelial tissue?

Accepted Answer

It connects epithelial tissue to underlying connective tissue.

Question 17

Which of the following is a function of mucous membranes?

Accepted Answer

Line passageways and chambers that open to the outside of the body.

Question 18

Which of the following best explains why epithelial tissue regenerates rapidly?

Accepted Answer

It contains stem cells in the deepest layer that continuously divide.

Question 19

Which of the following is TRUE regarding the extracellular matrix in connective tissue?

Accepted Answer

It consists of extracellular fibers and ground substance, providing support and structure.

Question 20

A cell is placed in a hypertonic solution. What is the expected outcome?

Accepted Answer

Water will move out of the cell, causing it to shrink.

Lecture 3 Guide

Guida di studio - Domande di pratica