Question 1

The selectively permeable membrane

Accepted Answer

A)  is a result of its composition; it is tough connective tissue, much like a ligament. 
B)  determines which substances enter and leave the cell. 
C)  allows for the unrestricted movement of water and electrolytes across the cell membrane. 
D)  permits diffusion but not osmosis.

Question 2

Which of the following is a correct statement?

Accepted Answer

A)  Most ATP is produced in the mitochondria. 
B)  Mitochondria contain potent enzymes that digest cellular waste and debris. 
C)  Most DNA is located within the mitochondria. 
D)  The RER is concerned with phagocytosis.

Question 3

Which of the following is not true of glycogen? Glycogen

Accepted Answer

A)  is a storage form of glucose. 
B)  is an alcohol to which three fatty acids attach thereby forming a triglyceride. 
C)  helps in the regulation of blood glucose. 
D)  is stored within the liver and skeletal muscle.

Question 4

This substance is composed of glycerol and three fatty acids.

Accepted Answer

A)  Glycogen 
B)  Polypeptide 
C)  Steroid 
D)  Triglyceride

Question 5

Which of the following structures make the rough endoplasmic reticulum look like sandpaper?

Accepted Answer

A)  Ribosomes 
B)  Globs of cytoplasm 
C)  ATP 
D)  Fragments of DNA

Question 6

Telophase and cytokinesis

Accepted Answer

A)  mark the beginning of mitosis. 
B)  complete the splitting of a single cell into two identical cells. 
C)  are called the "resting" phases. 
D)  occur only within sex cells.

Question 7

Which of the following is considered the control center of the cell?

Accepted Answer

A)  Mitochondrion 
B)  Nucleus 
C)  Lysosome 
D)  Centriole

Question 8

Which of the following is least true of mitochondria?

Accepted Answer

A)  Found only within liver cells 
B)  Make most of the body's ATP 
C)  Contain enzymes that function aerobically 
D)  Located within the cytoplasm

Question 9

This cytoplasmic organelle contains the enzymes of the Krebs cycle and electron transport chain and is primarily concerned with the formation of ATP:

Accepted Answer

A)  rough endoplasmic reticulum. 
B)  smooth endoplasmic reticulum. 
C)  mitochondrium. 
D)  centriole.

Question 10

What are the hairlike structures located on the outer surface of the cell membrane?

Accepted Answer

A)  Mitochondria 
B)  Ribosomes 
C)  Cilia 
D)  Centrioles

Question 11

Which structure puts the finishing touches on and packages the protein for export from the cell?

Accepted Answer

A)  Mitochondrion 
B)  Golgi apparatus 
C)  Lysosome 
D)  Nucleolus

Question 12

A beaker contains two compartments.Compartment A (CA)contains a 10% salt solution and Compartment B (CB)contains a 20% salt solution.The membrane is permeable only to water.At equilibrium,the volume in

Accepted Answer

A)  CA is greater than the volume in CB. 
B)  CA is less than the volume in CB. 
C)  CB is less than the volume in CA. 
D)  CA is the same as the volume in CB.

Question 13

Krebs cycle and electron transport chain enzymes

Accepted Answer

A)  are located within the mitochondria. 
B)  function anaerobically. 
C)  produce most of the lactic acid in the body. 
D)  account for the sandpaper-like appearance of the RER.

Question 14

What is the transport mechanism in this description: A passive process that uses a pressure difference as its driving force?

Accepted Answer

A)  Facilitated diffusion 
B)  An ATP-driven pump 
C)  Diffusion 
D)  Filtration

Question 15

Which of the following is true of a benign neoplasm?

Accepted Answer

A)  Metastatic lesion 
B)  Secondary tumor site 
C)  Cancerous 
D)  Noncancerous tumor

Question 16

Which of the following best describes the power or driving force for active transport?

Accepted Answer

A)  ATP 
B)  Pressure 
C)  DNA 
D)  H+

Question 17

Which of the following is a gel-like substance located inside the cell but outside the nucleus?

Accepted Answer

A)  Nucleoplasm 
B)  Isotonic saline 
C)  Cytoplasm 
D)  Lysosomal enzymes

Question 18

A beaker is divided into two compartments by a semipermeable membrane.Compartment A contains a 20% NaCl solution and compartment B contains a 50% NaCl solution.The membrane is permeable to both water and Na⁺ and Cl-.At equilibrium,the

Accepted Answer

A)  volume in compartment A will be greater than the volume in compartment B. 
B)  volume in compartment B will be greater than the volume in compartment A. 
C)  concentrations and volumes will be the same in both compartments. 
D)  concentration of salt is greater in compartment A than in compartment B.

Question 19

Which of the following best describes a cell that is necrotic?

Accepted Answer

A)  Dehydrated 
B)  Stem cell 
C)  Undifferentiated 
D)  Dead

Question 20

Which of the following is (are)found on the rough endoplasmic reticulum?

Accepted Answer

A)  Ribosomes 
B)  Cilia 
C)  Lysosomes 
D)  DNA

Exam 3: Cells