Question 1

Internal structures of a cell that carry out specialized metabolic tasks are called ________.

Accepted Answer

A)  organelles 
B)  ribosomes 
C)  enzymes 
D)  cytoskeletal elements 
A)  organelles 
B)  ribosomes 
C)  enzymes 
D)  cytoskeletal elements

Question 2

In general, water-soluble molecules diffuse through the ________; and lipid-soluble molecules diffuse through the ________.

Accepted Answer

A)  membrane channels; membrane channels 
B)  membrane channels; lipid bilayer 
C)  lipid bilayer; membrane channels 
D)  lipid bilayer; lipid bilayer 
E)  None of the choices are correct. 
A)  membrane channels; membrane channels 
B)  membrane channels; lipid bilayer 
C)  lipid bilayer; membrane channels 
D)  lipid bilayer; lipid bilayer 
E)  None of the choices are correct.

Question 3

A red blood cell that is placed in a hypertonic solution

Accepted Answer

A)  loses water. 
B)  gains water. 
C)  floats. 
D)  ruptures. 
E)  neither gains nor loses water. 
A)  loses water. 
B)  gains water. 
C)  floats. 
D)  ruptures. 
E)  neither gains nor loses water.

Question 4

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

Accepted Answer

A)  Reproduction and inheritance 
B)  Metabolism and energy use 
C)  Movement 
D)  Synthesis 
E)  Communication 
A)  Reproduction and inheritance 
B)  Metabolism and energy use 
C)  Movement 
D)  Synthesis 
E)  Communication

Question 5

Which of the following organelles function in the destruction of nonfunctional organelles?

Accepted Answer

A)  Endoplasmic reticulum 
B)  Centrioles 
C)  Basal bodies 
D)  Lysosomes 
E)  Mitochondria 
A)  Endoplasmic reticulum 
B)  Centrioles 
C)  Basal bodies 
D)  Lysosomes 
E)  Mitochondria

Question 6

Which of the following terms does NOT relate to the mitochondrion?

Accepted Answer

A)  Cristae 
B)  Self-replicating 
C)  Outer and inner membranes 
D)  ATP 
E)  Vitamin A storage 
A)  Cristae 
B)  Self-replicating 
C)  Outer and inner membranes 
D)  ATP 
E)  Vitamin A storage

Question 7

Which type of cell would have an abundance of lysosomes?

Accepted Answer

A)  White blood cell, a phagocyte 
B)  Mucus cell (secretes mucus) 
C)  Liver cells that detoxify hydrogen peroxide 
D)  Cardiac muscle cells (require large amounts of ATP) 
E)  Fibroblast (makes protein fibers) 
A)  White blood cell, a phagocyte 
B)  Mucus cell (secretes mucus) 
C)  Liver cells that detoxify hydrogen peroxide 
D)  Cardiac muscle cells (require large amounts of ATP) 
E)  Fibroblast (makes protein fibers)

Question 8

Active transport

Accepted Answer

A)  follows osmotic pressure gradients. 
B)  can move substances along their concentration gradient. 
C)  does not require metabolic energy (ATP). 
D)  involves vesicle formation. 
E)  requires ATP. 
A)  follows osmotic pressure gradients. 
B)  can move substances along their concentration gradient. 
C)  does not require metabolic energy (ATP). 
D)  involves vesicle formation. 
E)  requires ATP.

Question 9

Membrane-bound receptors

Accepted Answer

A)  are small, lipid soluble molecules. 
B)  have their receptor sites on the outer surface of the plasma membrane. 
C)  can interact with DNA in the nucleus. 
D)  do not exhibit specificity. 
E)  have no effect on the cell. 
A)  are small, lipid soluble molecules. 
B)  have their receptor sites on the outer surface of the plasma membrane. 
C)  can interact with DNA in the nucleus. 
D)  do not exhibit specificity. 
E)  have no effect on the cell.

Question 10

A cell that breaks down and recycles proteins would have large numbers of ________.

Accepted Answer

A)  rough ER 
B)  lysosomes 
C)  peroxisomes 
D)  secretory vesicles 
E)  proteosomes 
A)  rough ER 
B)  lysosomes 
C)  peroxisomes 
D)  secretory vesicles 
E)  proteosomes

Question 11

The collection of carbohydrates, glycolipids, and glycoproteins of the plasma membrane is called the ________.

Accepted Answer

A)  fluid mosaic 
B)  extracellular membrane 
C)  intercellular fluid 
D)  phospholipid 
E)  glycocalyx 
A)  fluid mosaic 
B)  extracellular membrane 
C)  intercellular fluid 
D)  phospholipid 
E)  glycocalyx

Question 12

A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being affected?

Accepted Answer

A)  Nucleus 
B)  Centriole 
C)  Microtubule 
D)  Mitochondrion 
E)  Ribosome 
A)  Nucleus 
B)  Centriole 
C)  Microtubule 
D)  Mitochondrion 
E)  Ribosome

Question 13

The structural RNA of ribosomes is a

Accepted Answer

A)  pre-mRNA. 
B)  proenzyme. 
C)  gene. 
D)  ribosomal RNA (rRN
A) . 
E)  codon. 
A)  pre-mRNA. 
B)  proenzyme. 
C)  gene. 
D)  ribosomal RNA (rRN
A) . 
E)  codon.

Question 14

Which of these cells would most likely have the largest number of mitochondria?

Accepted Answer

A)  Bone cells 
B)  Skeletal muscle cells 
C)  Adipocytes 
D)  Red blood cells 
E)  Skin cells 
A)  Bone cells 
B)  Skeletal muscle cells 
C)  Adipocytes 
D)  Red blood cells 
E)  Skin cells

Question 15

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

Accepted Answer

A)  Membrane channel protein 
B)  Phospholipid bilayer 
C)  Internal membrane surface 
D)  Peripheral protein 
E)  Integral protein 
A)  Membrane channel protein 
B)  Phospholipid bilayer 
C)  Internal membrane surface 
D)  Peripheral protein 
E)  Integral protein

Question 16

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "A" relative to the RBC?

Accepted Answer

A)  Hypotonic solution 
B)  Hypertonic solution 
C)  Isotonic solution 
A)  Hypotonic solution 
B)  Hypertonic solution 
C)  Isotonic solution

Question 17

Which of the following is NOT consistent with active transport?

Accepted Answer

A)  Movement is against a concentration gradient 
B)  Movement is with a concentration gradient 
C)  Involves a carrier 
D)  Exhibits competition and saturation 
E)  Uses cell energy 
A)  Movement is against a concentration gradient 
B)  Movement is with a concentration gradient 
C)  Involves a carrier 
D)  Exhibits competition and saturation 
E)  Uses cell energy

Question 18

The lower limit of resolution of a light microscope is ________.

Accepted Answer

A)  100μm 
B)  0.1μm 
C)  10μm 
D)  0.01μm 
E)  1.0μm 
A)  100μm 
B)  0.1μm 
C)  10μm 
D)  0.01μm 
E)  1.0μm

Question 19

Which of the following is NOT true of G-protein complex action?

Accepted Answer

A)  Stimulates a cell by means of extracellular chemical signals 
B)  Stimulates a cell by opening ion channels in the plasma membrane 
C)  Stimulates a cell by means of intracellular chemical signals 
D)  Stimulates a cell by activating enzymes associated with the plasma membrane 
E)  Acts as an intermediate between a receptor and other cellular proteins 
A)  Stimulates a cell by means of extracellular chemical signals 
B)  Stimulates a cell by opening ion channels in the plasma membrane 
C)  Stimulates a cell by means of intracellular chemical signals 
D)  Stimulates a cell by activating enzymes associated with the plasma membrane 
E)  Acts as an intermediate between a receptor and other cellular proteins

Question 20

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "C"?

Accepted Answer

A)  Phagocytized 
B)  Normal 
C)  Coagulated 
D)  Hemolyzed 
E)  Crenated 
A)  Phagocytized 
B)  Normal 
C)  Coagulated 
D)  Hemolyzed 
E)  Crenated

Exam 3: Cell Biology

Internal structures of a cell that carry out specialized metabolic tasks are called ________.

In general, water-soluble molecules diffuse through the ________; and lipid-soluble molecules diffuse through the ________.

A red blood cell that is placed in a hypertonic solution

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

Which of the following organelles function in the destruction of nonfunctional organelles?

Which of the following terms does NOT relate to the mitochondrion?

Which type of cell would have an abundance of lysosomes?

Active transport

Membrane-bound receptors

A cell that breaks down and recycles proteins would have large numbers of ________.

The collection of carbohydrates, glycolipids, and glycoproteins of the plasma membrane is called the ________.

A cell's ability to replenish ATP is reduced by a metabolic poison. Which organelle is being affected?

The structural RNA of ribosomes is a

Which of these cells would most likely have the largest number of mitochondria?

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

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is solution "A" relative to the RBC?

Which of the following is NOT consistent with active transport?

The lower limit of resolution of a light microscope is ________.

Which of the following is NOT true of G-protein complex action?

-Red blood cells (RBCs) have been placed in three different solutions: hypotonic, hypertonic, isotonic. What is the condition of the RBC in solution "C"?

The Human Organism

The Chemical Basis of Life

Tissues

Integumentary System

Skeletal System: Bones and Bone Tissue

Skeletal System: Gross Anatomy

Joint 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-Base Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

In general, water-soluble molecules diffuse through the ; and lipid-soluble molecules diffuse through the .