Question 1

The anticodon sequence GUA pairs with which of the following codons?

Accepted Answer

A) CAU 
B) CAT 
C) CTU 
D) CTT 
E) GUA 
A) CAU 
B) CAT 
C) CTU 
D) CTT 
E) GUA

Question 2

Which of the following would increase the rate of mediated transport?

Accepted Answer

A) change the shape of the binding site on the carrier molecule 
B) increase the number of competitive molecules 
C) remove the binding site on the carrier molecule 
D) fill all binding sites on carrier molecules 
E) increase the number of available carrier molecules 
A) change the shape of the binding site on the carrier molecule 
B) increase the number of competitive molecules 
C) remove the binding site on the carrier molecule 
D) fill all binding sites on carrier molecules 
E) increase the number of available carrier molecules

Question 3

Which of the following is NOT a characteristic function of a cell?

Accepted Answer

A) reproduction and inheritance 
B) communication 
C) movement 
D) metabolism and energy use 
E) synthesis 
A) reproduction and inheritance 
B) communication 
C) movement 
D) metabolism and energy use 
E) synthesis

Question 4

Mitochondria

Accepted Answer

A) contains DNA. 
B) have inner and outer membranes. 
C) have inner folds called cristae. 
D) are the cell's power plants. 
E) All of these choices are correct. 
A) contains DNA. 
B) have inner and outer membranes. 
C) have inner folds called cristae. 
D) are the cell's power plants. 
E) All of these choices are correct.

Question 5

-What structure does "D" represent on the diagram of the plasma membrane?

Accepted Answer

A) integral protein 
B) phospholipid bilayer 
C) internal membrane surface 
D) membrane channel protein 
E) peripheral protein 
A) integral protein 
B) phospholipid bilayer 
C) internal membrane surface 
D) membrane channel protein 
E) peripheral protein

Question 6

Cells produce and respond to chemical and electrical signals as a means of

Accepted Answer

A) synthesizing. 
B) communicating. 
C) metabolizing. 
D) using energy. 
E) reproducing. 
A) synthesizing. 
B) communicating. 
C) metabolizing. 
D) using energy. 
E) reproducing.

Question 7

The fluid-mosaic model of the plasma membrane suggests that

Accepted Answer

A) phospholipids form a single lipid layer in the center of the membrane. 
B) proteins form a "liquid" sea in the membrane. 
C) cholesterol forms the outermost layer of the membrane. 
D) the membrane is neither rigid nor static in structure. 
E) proteins are not a part of the membrane. 
A) phospholipids form a single lipid layer in the center of the membrane. 
B) proteins form a "liquid" sea in the membrane. 
C) cholesterol forms the outermost layer of the membrane. 
D) the membrane is neither rigid nor static in structure. 
E) proteins are not a part of the membrane.

Question 8

What type of cell would have an abundance of lysosomes?

Accepted Answer

A) liver cells that detoxify hydrogen peroxide 
B) fibroblast (makes protein fibers) 
C) white blood cell,a phagocyte 
D) cardiac muscle cells (require large amounts of ATP) 
E) mucus cell (secretes mucus) 
A) liver cells that detoxify hydrogen peroxide 
B) fibroblast (makes protein fibers) 
C) white blood cell,a phagocyte 
D) cardiac muscle cells (require large amounts of ATP) 
E) mucus cell (secretes mucus)

Question 9

Check all of the major theories of aging.

Accepted Answer

A) Damage to mitochondria. 
B) Damage to the DNA from free radicals. 
C) Damage to lysosomes. 
D) Presence of a "cell death clock". 
E) Presence of "death genes". 
A) Damage to mitochondria. 
B) Damage to the DNA from free radicals. 
C) Damage to lysosomes. 
D) Presence of a "cell death clock". 
E) Presence of "death genes".

Question 10

Which of the following are consistent with facilitated diffusion? (1)movement is against a concentration gradient
(2)movement is with a concentration gradient
(3)involves a carrier molecule
(4)involves cotransport
(5)involves counter transport
(6)exhibits competition and saturation

Accepted Answer

A) 1,2,4,5,6 
B) 2,3,5,6 
C) 2,3,4,6 
D) 1,3,4,5,6 
E) 2,3,6 
A) 1,2,4,5,6 
B) 2,3,5,6 
C) 2,3,4,6 
D) 1,3,4,5,6 
E) 2,3,6

Question 11

Cells that lack ribosomes cannot

Accepted Answer

A) eliminate wastes. 
B) produce energy. 
C) package cellular products. 
D) engage in protein synthesis. 
E) ingest and phagocytize bacteria. 
A) eliminate wastes. 
B) produce energy. 
C) package cellular products. 
D) engage in protein synthesis. 
E) ingest and phagocytize bacteria.

Question 12

Organelles

Accepted Answer

A) are unspecialized portions of a cell. 
B) are extracellular structures. 
C) vary in number and type depending on cell function. 
D) are structural,but not functional parts of the cell. 
E) generally lack membranes. 
A) are unspecialized portions of a cell. 
B) are extracellular structures. 
C) vary in number and type depending on cell function. 
D) are structural,but not functional parts of the cell. 
E) generally lack membranes.

Question 13

The organelle that protects cells from the damaging effects of medications and toxins is the

Accepted Answer

A) microtubule. 
B) mitochondria. 
C) ribosome. 
D) secretory vesicle. 
E) smooth endoplasmic reticulum. 
A) microtubule. 
B) mitochondria. 
C) ribosome. 
D) secretory vesicle. 
E) smooth endoplasmic reticulum.

Question 14

Microtubules

Accepted Answer

A) are a component of mitochondria. 
B) are the smallest components of the cytoskeleton. 
C) provide structure and support to the cytoplasm. 
D) contain the protein myosin. 
E) are solid,supporting rods of protein. 
A) are a component of mitochondria. 
B) are the smallest components of the cytoskeleton. 
C) provide structure and support to the cytoplasm. 
D) contain the protein myosin. 
E) are solid,supporting rods of protein.

Question 15

In which part of the cell cycle do chromosomes align along the equator?

Accepted Answer

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

Question 16

Which of the following is NOT posttranslational processing?

Accepted Answer

A) conversion of a pro-protein to a functional protein 
B) conversion of a pro-enzyme to a functional enzyme 
C) joining 2 or more amino acid chains 
D) adding polysaccharide side chains to proteins 
E) removal of introns from pre-mRNA 
A) conversion of a pro-protein to a functional protein 
B) conversion of a pro-enzyme to a functional enzyme 
C) joining 2 or more amino acid chains 
D) adding polysaccharide side chains to proteins 
E) removal of introns from pre-mRNA

Question 17

-What structure does "B" represent on the diagram of the plasma membrane?

Accepted Answer

A) internal membrane surface 
B) membrane channel protein 
C) phospholipid bilayer 
D) peripheral protein 
E) integral protein 
A) internal membrane surface 
B) membrane channel protein 
C) phospholipid bilayer 
D) peripheral protein 
E) integral protein

Question 18

A cell with abundant peroxisomes would most likely be involved in

Accepted Answer

A) detoxification activities. 
B) secretion. 
C) protein synthesis. 
D) storage of glycogen. 
E) cellular communication. 
A) detoxification activities. 
B) secretion. 
C) protein synthesis. 
D) storage of glycogen. 
E) cellular communication.

Question 19

Determine the sequence of the following events in a cell after exposure of the cell to a chemical signal. (1)increased synthesis of a protein
(2)the chemical signal combined with a cytoplasmic receptor
(3)an increase in the nuclear concentration of the chemical
(4)an increase in mRNA synthesis
(5)genes are activated

Accepted Answer

A) 1,2,3,4,5 
B) 2,1,3,5,4 
C) 2,4,5,3,2 
D) 2,3,5,4,1 
E) 2,3,4,5,1 
A) 1,2,3,4,5 
B) 2,1,3,5,4 
C) 2,4,5,3,2 
D) 2,3,5,4,1 
E) 2,3,4,5,1

Question 20

Absence of a cytoskeleton might affect

Accepted Answer

A) cell shape. 
B) the ability of the cell to generate energy. 
C) membrane transport. 
D) vesicle formation. 
E) the number of channel proteins in the cell membrane. 
A) cell shape. 
B) the ability of the cell to generate energy. 
C) membrane transport. 
D) vesicle formation. 
E) the number of channel proteins in the cell membrane.

Exam 3: Cell Biology

The anticodon sequence GUA pairs with which of the following codons?

Which of the following would increase the rate of mediated transport?

Which of the following is NOT a characteristic function of a cell?

Mitochondria

-What structure does "D" represent on the diagram of the plasma membrane?

Cells produce and respond to chemical and electrical signals as a means of

The fluid-mosaic model of the plasma membrane suggests that

What type of cell would have an abundance of lysosomes?

Check all of the major theories of aging.

Which of the following are consistent with facilitated diffusion? (1)movement is against a concentration gradient (2)movement is with a concentration gradient (3)involves a carrier molecule (4)involves cotransport (5)involves counter transport (6)exhibits competition and saturation

Cells that lack ribosomes cannot

Organelles

The organelle that protects cells from the damaging effects of medications and toxins is the

Microtubules

In which part of the cell cycle do chromosomes align along the equator?

Which of the following is NOT posttranslational processing?

-What structure does "B" represent on the diagram of the plasma membrane?

A cell with abundant peroxisomes would most likely be involved in

Absence of a cytoskeleton might affect

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joints and Movement

Muscular System: Histology and Physiology

Muscular System: Gross Anatomy

Functional Organization of Nervous Tissue

Spinal Cord and Spinal Nerves

Brain and Cranial Nerves

Integration of Nervous System Functions

The Special Senses

Autonomic Nervous System

Functional Organization of the Endocrine System

Endocrine Glands

Cardiovascular System: Blood

Cardiovascular System: the Heart

Cardiovascular System: Blood Vessels and Circulation

Lymphatic System and Immunity

Respiratory System

Digestive System

Nutrition,metabolism,and Temperature Regulation

Urinary System

Water,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

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