Question 1

Which cytoskeletal structure is involved in the movement of chromosomes during cell division?

Accepted Answer

A) Actin filaments 
B) Intermediate filaments 
C) Microtubules 
D) Microvilli

Question 2

Which of the following types of RNA are NOT matched correctly with their function?

Accepted Answer

A) tRNA - carries amino acids 
B) rRNA - site of protein synthesis 
C) tRNA - contains the code to make a polypeptide 
D) mRNA - contains the code to make a polypeptide

Question 3

When mRNA molecules are formed,they are complementary to DNA with the exception that

Accepted Answer

A) an A in DNA matches a T in mRNA. 
B) a T in DNA matches an C in mRNA. 
C) an A in DNA matches a G in mRNA. 
D) an A in DNA matches a U in mRNA.

Question 4

The movement of protein molecules within the phospholipid bilayer is described by the

Accepted Answer

A) fluid mosaic model. 
B) lipid mosaic model. 
C) protein - lipid mosaic model. 
D) cholesterol mosaic model.

Question 5

Which organelle is involved in processing,packaging,and secretion of proteins and lipids?

Accepted Answer

A) Ribosomes 
B) Golgi apparatus 
C) Endoplasmic reticulum 
D) Chromosomes

Question 6

The random movement of simple substances from an area of higher concentration to an area of lower concentration is called

Accepted Answer

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

Question 7

Hemolysis means

Accepted Answer

A) swelling of cells. 
B) shrinking of blood cells. 
C) diffusion of cells into blood. 
D) bursting of blood cells

Question 8

Filtration

Accepted Answer

A) pushes material out of the blood. 
B) uses blood pressure to move fluids. 
C) can separate large particles from small particles. 
D) All apply.

Question 9

Compare mitosis and meiosis with regard to number of cell divisions,effect on chromosome number,and function.

Accepted Answer

The answer of Compare mitosis and meiosis with regard to...

Question 10

__________ are small hair-like extensions that produce movement across the surface of cells.

Accepted Answer

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

Question 11

Which of the following is NOT a passive process of movement?

Accepted Answer

A) Solute pumps 
B) Osmosis 
C) Facilitated diffusion 
D) Diffusion

Question 12

Sperm use __________ for movement.

Accepted Answer

A) cilia 
B) flagella 
C) microvilli 
D) microfilaments

Question 13

Semipermeable membrane means that half the amount of a substance can pass through the plasma membrane.
Semipermeable membrane means that some things can pass through the plasma membrane,while other things will not pass through.

Accepted Answer

A) True 
 B)False

Question 14

The nuclear envelope contains the nuclear material and its structure is a

Accepted Answer

A) double layered membrane with pores. 
B) single layered membrane with pores. 
C) solid single layered membrane. 
D) solid double layered membrane.

Question 15

The period of interphase when cell growth and manufacture of organelles occurs is the

Accepted Answer

A) G1 phase. 
B) S phase. 
C) G2 phase. 
D) mitosis phase.

Question 16

Which of the following is NOT a form of RNA used in protein synthesis?

Accepted Answer

A) Messenger RNA 
B) Complementary RNA 
C) Transfer RNA 
D) Ribosomal RNA

Question 17

The plasma membrane is

Accepted Answer

A) impermeable. 
B) permeable to everything. 
C) selectively permeable.

Question 18

When a cell is placed into a(n)__________ solution,water enters the cell.

Accepted Answer

A) isotonic 
B) hypotonic 
C) hypertonic

Question 19

The chromosomes lining up randomly at the equator of the cell occurs during

Accepted Answer

A) prophase. 
B) metaphase. 
C) anaphase. 
D) telophase.

Question 20

Explain the fluid mosaic model of the plasma membrane.

Accepted Answer

The answer of Explain the fluid mosaic model of the...

Exam 3: Cell Structure and Function