Chapter 2 - Cells

Question 1

Proteins in the plasma membrane preform a variety of functions including ____?

Answer 1

Cell to cell regulation
Intercellular connection
Transport
Enzyme activity

Question 2

Epithelial cells _____.

Answer 2

line internal surfaces of organs.

Question 3

The ____ membrane forms the outer, limiting barrier separating the internal contents of the cell from the external environment.

Answer 3

plasma

Question 4

One of the main factors that influence membrane permeability is ______.

Answer 4

concentration gradient

Question 5

The cell structure known as the “gatekeeper” to regulate the passage of gases, nutrients and wastes.

Answer 5

plasma membrane

Question 6

Simple diffusion of water is called ____.

Answer 6

osmosis

Question 7

Examples of lipids include ____.

Answer 7

cholesterol
oils
fats
steroids’

Question 8

Some membrane proteins catalyze (speed up) the rate of metabolic reactions. These proteins are acting as ____.

Answer 8

enzymes

Question 9

The functions of human body cells are ____.

Answer 9

producing new cells
providing for defense
lining surfaces
making connections

Question 10

The four major passive transport processes are simple ____, facilitated ____, osmosis, and bulk _____.

Answer 10

diffusion
diffusion
filtration

Question 11

The tendency of molecules to move down their concentration gradient is ____.

Answer 11

diffusion

Question 12

Proteins in the plasma membrane perform a variety of functions including ______.

Answer 12

transport
enzyme activity
intercellular connection
cell to cell recognition

Question 13

______ is required for osmosis to occur.

Answer 13

a selectively permeable membrane

Question 14

Endocytosis is _____ in reverse.

Answer 14

exocytosis

Question 15

In diffusion, particles move until they are ______.

Answer 15

spread out evenly on each side of a membrane

Question 16

In osmosis and simple diffusion, the net movement of molecules will continue until the concentration gradient no longer exists. This end point is called
_____.

Answer 16

equilibrium OR isotonic

Question 17

An enclosed membrane sac formed through phagocytosis is called a ______.

Answer 17

vacuole

Question 18

Osmosis is a type of ______.

Answer 18

diffusion

Question 19

The term endocytosis ______.

Answer 19

includes phagocytosis and pinocytosis

Question 20

The cytoplasm is the material between the plasma membrane and ______.

Answer 20

nucleus

Question 21

Cytosol is ____.

Answer 21

the viscous fluid of the cytoplasm.

Question 22

Phagocytosis means ____.

Answer 22

cellular eating

Question 23

Pinocytosis is known as _____.

Answer 23

cellular drinking

Question 24

The folds of the inner membrane of a mitochondrion are called ______.

Answer 24

cristae

Question 25

These are the primary structures for the processing and packaging of proteins for transport out of the cell.

Answer 25

golgi apparatus

Question 26

Nucleoli are made up of ____ enzymes, and other proteins.

Answer 26

RNA

Question 27

Which of the following cells have “storage” as one of their primary functions?

Fat cells
Lymphocytes
Liver cells
Epidermal cells

Answer 27

Lymphocytes
Liver cells

Question 28

What are the types of passive transport?

Answer 28

Osmosis
Facilitated Diffusion
Simple Diffusion
Bulk Filtration