Chapter 3: Module 2: Section 3.04-3.06

Crenation takes place when a cell is placed in

hypertonic solution

A cell will swell, and likely burst, if it is placed in a(n) __________ solution.

hypotonic

Match the type of membrane transport with the appropriate characteristic: primary active transport

movement of a substance that utilizes a carrier; energy comes directly from hydrolysis of ATP

Proteins in the cell membrane that bind hormones and relay messages into the interior of the cell __________.

perform a function known as signal transduction

Correctly match the term and definition: endocytosis of a tiny quantity of extracellular fluid containing solute molecules

pinocytosis

Cells of the body mainly use __________ for the selective endocytosis of most macromolecules.

receptor-mediated endocytosis

Pinocytosis is a type of __________.

endocytosis

Which of the following pairs is a correct match?

exocytosis: active membrane transport process

Match the term with its definition: Hypotonic solution

A solution containing fewer solutes than the cell

In chemical signaling, which of the following is considered to be a second messenger?

Cyclic AMP

Match the type of membrane transport with the appropriate characteristic: secondary active transport.

Driven indirectly by energy stores in concentration gradients of ions

Correctly match the term and definition: vesicular transport that moved substances into cells

Endocytosis

Correctly match the term and definition: the fusion of a vesicles with the plasma membrane to move substances out of the cell.

Exocytosis

The sodium- potassium pump helps to maintain the concentration gradients for sodium and potassium ions across the plasma membrane. Select the true statement regarding the sodium-potassium pump

For each molecule of ATP used, the pump moves three positively charged sodium ions out of the cell.

Which of the following bonds to a specific receptor and initiated a response in a cell?

Ligand

Cyanide poisoning prevents the production of ATP. If ATP were not available to drive the sodium-potassium pump, which of the following is most likely?

Na+ will leak back into the cell and being wafer with it causing cells to burst

By which method does the following move into the cell: movement of large particles, bacteria, or cellular debris by endocytoic vesicle

Phagocytosis

By which method does the following move into the cell: movement of large particles, bacteria, or cellular debris by endocytotic vehicle.

Phagocytosis

Which type of membrane transport process uses ATP as a source of energy?

Primary Active Transport Active transport processes use ATP. Notice the first letter in each word.

The electrochemical gradient recognizes the effect of both electrical and concentration (chemical) forces. The electrochemical gradient applies to which of the following substances?

Sodium ions

The resting membrane potential is mainly determined by

The concentration gradient of K+ and the differential permeability of the plasma membrane to K+ and other ions

Match the term with its definition: hydrostatic pressure

The force of a liquid pushing against something

Match the term with its definition: osmotic pressure

The force that solutes have to attract water

Select the statement that is false regarding the resting membrane potential

The minus sign of the testing membrane potential indicates that the outside of the cell is negative indicates that the outside of the cell is negative compared to its inside.

Which of the following is true with regard to membrane potential?

Transient opening of gated Na+ and K+ channels in the plasma membrane is a normal means of activating neurons and muscle cells.

By which method does the following move into the cell molecules moving against the concentration gradient?

active transport mechanisms