Question 1

A cell that has crenated has

Accepted Answer

A) swollen up. 
B) burst. 
C) broken in half. 
D) shrunk.

Question 2

Compare DNA,mRNA,and tRNA with regard to function and location.

Accepted Answer

The answer of Compare DNA,mRNA,and tRNA with regard to function...

Question 3

Each strand of a replicated double helix of DNA is called a

Accepted Answer

A) chromatid. 
B) chromosome. 
C) autosome. 
D) centriole.

Question 4

Functions of membrane proteins include all of the following except

Accepted Answer

A) carriers. 
B) cell identification. 
C) stability. 
D) receptors. 
E) channels.

Question 5

A white blood cell engulfing a bacterium is an example of

Accepted Answer

A) pinocytosis. 
B) exocytosis. 
C) active transport. 
D) phagocytosis.

Question 6

Bringing solutions into a cell is called

Accepted Answer

A) facilitated diffusion. 
B) pinocytosis. 
C) exocytosis. 
D) phagocytosis.

Question 7

The plasma membrane is a solid that holds the contents inside the cell.
The plasma membrane is a liquid that holds the contents inside the cell.

Accepted Answer

A) True 
 B)False

Question 8

The phospholipid molecules are arranged with

Accepted Answer

A) the hydrophilic tails facing outward and the hydrophobic heads facing inward. 
B) the hydrophilic tails facing inward and the hydrophobic heads facing outward. 
C) the hydrophilic heads facing outward and the hydrophobic tails facing inward. 
D) the hydrophilic heads facing inward and the hydrophobic tails facing outwarD.

Question 9

When a cell is placed into a(n)__________ solution,crenation is possible.

Accepted Answer

A) isotonic 
B) hypotonic 
C) hypertonic

Question 10

Small lipid soluble molecules would move through the plasma membrane by

Accepted Answer

A) diffusion. 
B) osmosis. 
C) filtration. 
D) pumping.

Question 11

Liver cells help to detoxify drugs,therefore,they would have a large number of

Accepted Answer

A) rough ER. 
B) Golgi apparatus. 
C) smooth ER. 
D) centrioles.

Question 12

Digestive sacs found in cells that help to detoxify drugs and alcohol are

Accepted Answer

A) peroxisomes. 
B) centrioles. 
C) ribosomes. 
D) rough ER.

Question 13

Which of the following organelles functions in protein synthesis?

Accepted Answer

A) Ribosomes 
B) Golgi apparatus 
C) Smooth ER 
D) All apply.

Question 14

Proteins that are mainly used inside the cell are synthesized

Accepted Answer

A) in the nucleus. 
B) on polyribosomes. 
C) on rough ER. 
D) in the nucleoli.

Question 15

__________ help keep the lungs clean.

Accepted Answer

A) Cilia 
B) Flagella 
C) Basal bodies 
D) Microvilli

Question 16

Active transport

Accepted Answer

A) moves materials against their concentration gradients. 
B) requires energy. 
C) occurs in cells with many mitochondria. 
D) All apply.

Question 17

The inner membrane folds of mitochondria,where many of the reactions of aerobic cellular respiration occur,are called

Accepted Answer

A) smooth ER. 
B) cristae. 
C) grana. 
D) thylakoid membranes.

Question 18

The movement of H2O across a plasma membrane

Accepted Answer

A) is called osmosis. 
B) is called diffusion. 
C) requires energy. 
D) is called osmosis and requires energy.

Question 19

Small structures that compartmentalize the cell for the various cellular activities are

Accepted Answer

A) nuclei. 
B) organelles. 
C) matrices. 
D) proteins.

Question 20

Facilitated diffusion requires cellular energy.
Facilitated diffusion does not require cellular energy,it is passive.

Accepted Answer