Question 1

What type of cell has abundant mitochondria?

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 2

Posttranscriptional processing is the modification of

Accepted Answer

A)  proteins to form pro-proteins. 
B)  mRNA to form tRNA. 
C)  pre-mRNA to form functional mRNA. 
D)  exons to form introns. 
E)  DNA. 
A)  proteins to form pro-proteins. 
B)  mRNA to form tRNA. 
C)  pre-mRNA to form functional mRNA. 
D)  exons to form introns. 
E)  DNA.

Question 3

Which of the following is NOT posttranslational processing?

Accepted Answer

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

Question 4

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

Question 5

What type of membrane proteins allow cells to identify one another?

Accepted Answer

A)  marker molecules 
B)  channel protein 
C)  receptor proteins 
D)  enzymes 
E)  carrier proteins 
A)  marker molecules 
B)  channel protein 
C)  receptor proteins 
D)  enzymes 
E)  carrier proteins

Question 6

The bulk uptake of material by the formation of a vesicle is called

Accepted Answer

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

Question 7

Which of the following pairs of terms is mismatched?

Accepted Answer

A)  mitochondria - cristae 
B)  Golgi apparatus - cisternae 
C)  lysosomes - hydrolytic enzymes 
D)  smooth endoplasmic reticulum - chromatin 
E)  cilia - basal bodies 
A)  mitochondria - cristae 
B)  Golgi apparatus - cisternae 
C)  lysosomes - hydrolytic enzymes 
D)  smooth endoplasmic reticulum - chromatin 
E)  cilia - basal bodies

Question 8

A symporter will transport _____ across the cell membrane.

Accepted Answer

A)  two different ions or molecules in opposite directions 
B)  two different ions or molecules in the same direction 
C)  two of the same ions or molecules in the same direction 
D)  one specific ion or molecule 
E)  two of the same ions or molecules in opposite directions 
A)  two different ions or molecules in opposite directions 
B)  two different ions or molecules in the same direction 
C)  two of the same ions or molecules in the same direction 
D)  one specific ion or molecule 
E)  two of the same ions or molecules in opposite directions

Question 9

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Accepted Answer

A)  secretion of lipids 
B)  intracellular digestion 
C)  DNA replication 
D)  modification of protein 
E)  absorption of nutrients 
A)  secretion of lipids 
B)  intracellular digestion 
C)  DNA replication 
D)  modification of protein 
E)  absorption of nutrients

Question 10

Messenger RNA

Accepted Answer

A)  is synthesized when a portion of a DNA molecule is transcribed. 
B)  directs the synthesis of DNA. 
C)  determines the sequence of nucleotides in the anticodons of tRNA. 
D)  directs the synthesis of centrioles in the cytoplasm. 
E)  is not involved in the synthesis of proteins. 
A)  is synthesized when a portion of a DNA molecule is transcribed. 
B)  directs the synthesis of DNA. 
C)  determines the sequence of nucleotides in the anticodons of tRNA. 
D)  directs the synthesis of centrioles in the cytoplasm. 
E)  is not involved in the synthesis of proteins.

Question 11

Which of the following could be used to study general features of cells?

Accepted Answer

A)  a magnifying glass 
B)  scanning electron microscope 
C)  transmission electron microscope 
D)  binoculars 
E)  light microscope 
A)  a magnifying glass 
B)  scanning electron microscope 
C)  transmission electron microscope 
D)  binoculars 
E)  light microscope

What type of cell has abundant mitochondria?

Posttranscriptional processing is the modification of

Which of the following is NOT posttranslational processing?

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

What type of membrane proteins allow cells to identify one another?

The bulk uptake of material by the formation of a vesicle is called

Which of the following pairs of terms is mismatched?

A symporter will transport _____ across the cell membrane.

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Messenger RNA

Which of the following could be used to study general features of cells?

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, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

Exam 3: Cell Biology

What type of cell has abundant mitochondria?

Posttranscriptional processing is the modification of

Which of the following is NOT posttranslational processing?

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

What type of membrane proteins allow cells to identify one another?

The bulk uptake of material by the formation of a vesicle is called

Which of the following pairs of terms is mismatched?

A symporter will transport _____ across the cell membrane.

You are looking at a cell with the electron microscope and you notice the following characteristics: presence of many mitochondria and lysosomes; few, if any, Golgi apparatus; and many ribosomes. Which of the following is the most likely function of that cell?

Messenger RNA

Which of the following could be used to study general features of cells?

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, Electrolytes, and Acidbase Balance

Reproductive System

Development, Growth, Aging, and Genetics

Filters

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