Question 1

The process by which molecules such as glucose are moved into cells along their concentration gradient with the help of membrane-bound carrier proteins is called

Accepted Answer

A) osmosis. 
B) facilitated diffusion. 
C) active transport. 
D) endocytosis. 
E) exocytosis.

Question 2

Red blood cell shrinkage is to ________ as cell bursting is to ________.

Accepted Answer

A) crenation; hemolysis 
B) lysis; crenation 
C) hypotonic; isotonic 
D) isotonic; hypotonic 
E) isotonic; hypertonic

Question 3

If the amount of chloride ion in blood plasma increases,which of the following would initially occur?

Accepted Answer

A) The blood osmotic pressure will increase. 
B) The blood osmotic pressure will decrease. 
C) The blood osmotic pressure will stay the same. 
D) The blood hydrostatic pressure will increase. 
E) The blood hydrostatic pressure will decrease.

Question 4

Examination of a sample of glandular cells reveals an extensive network of smooth endoplasmic reticulum.Which of the following is the likeliest product of these cells?

Accepted Answer

A) digestive enzymes 
B) steroid hormones 
C) protein hormones 
D) transport proteins 
E) antibodies

Question 5

The process by which cells become specialized is called ________.

Accepted Answer

The answer of The process by which cells become specialized...

Question 6

What would the complimentary DNA template strand be to produce the mRNA sequence of UGU - CAA?

Accepted Answer

A) ACA - GTT 
B)  UCU - GUU 
C)  CGC - ATT 
D)  ACA - GUU 
E)  TCT - GTT

Question 7

The start of each gene begins with a ________ segment.

Accepted Answer

The answer of The start of each gene begins with...

Question 8

Which of the following is not a function of membrane proteins?

Accepted Answer

A) bind to ligands 
B) regulate the passage of ions 
C) act as carrier molecules for various solutes 
D) act as anchors or stabilizers for the cell membrane 
E) storage of cellular nutrients

Question 9

When a person receives intravenous fluids to help build up blood volume,why is it important for the fluid to be isotonic?

Accepted Answer

The answer of When a person receives intravenous fluids to...

Question 10

Microfilaments

Accepted Answer

A) anchor the cytoskeleton to membrane proteins. 
B) control the consistency of cytoplasm. 
C) with myosin,produce cell movement. 
D) consist of the protein called actin. 
E) All of the answers are correct.

Question 11

The physical process by which a single animal cell separates into two cells is called ________.

Accepted Answer

The answer of The physical process by which a single...

Question 12

The process of forming mRNA is called

Accepted Answer

A) replication. 
B) transcription. 
C) translation. 
D) ribolation. 
E) auscultation.

Question 13

The genetically programmed death of cells is called

Accepted Answer

A) differentiation. 
B) replication. 
C) apoptosis. 
D) metastasis. 
E) mitosis.

Question 14

Each of the following statements concerning mitochondria is true,except one.Identify the exception.

Accepted Answer

A) The cristae increase the inner surface area of the organelle. 
B) The matrix contains metabolic enzymes involved in energy production. 
C) Respiratory enzymes are attached to the surface of the cristae. 
D) The mitochondria require carbon dioxide and produce oxygen in the process of energy production. 
E) The mitochondria produce most of a cell's ATP.

Question 15

The intake of small membrane vesicles from the extracellular fluid is called

Accepted Answer

A) osmosis. 
B) active transport. 
C) facilitated transport. 
D) endocytosis. 
E) an ion exchange pump.

Question 16

The movement of oxygen from an area of high concentration to an area of low concentration is an example of

Accepted Answer

A) osmosis. 
B) active transport. 
C) diffusion. 
D) facilitated transport. 
E) filtration.

Question 17

A DNA nucleotide is composed of

Accepted Answer

A) three amino acids. 
B) a codon and an anticodon. 
C) one nitrogen base,deoxyribose sugar,and a phosphate group. 
D) four nitrogen bases. 
E) protein,lipid,and ribose sugar.

Question 18

During this phase of cell division,the chromosomes uncoil,the nuclear membrane forms,and cytokinesis occurs.

Accepted Answer

A) anaphase 
B) prophase 
C) interphase 
D) telophase 
E) metaphase

Question 19

During the synthesis of proteins,amino acids are assembled in the proper sequence because each tRNA molecule that brings them to the ribosome has a(n)________ that binds to a complementary codon in the mRNA.

Accepted Answer

The answer of During the synthesis of proteins,amino acids are...

Question 20

The principal cations in our body fluids are ________ and ________.

Accepted Answer

A) sodium; potassium 
B) calcium; magnesium 
C) sodium; calcium 
D) chloride; bicarbonate 
E) sodium; chloride

Exam 3: The Cellular Level of Organization