Question 1

The movement of water through a selectively permeable membrane 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 2

Check all of the major hypotheses 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 3

At the base of each cilium is a structure called the ________.

Accepted Answer

A)  kinetochore 
B)  basal body 
C)  dynein arm 
D)  centrosome 
E)  None of the choices are correct. 
A)  kinetochore 
B)  basal body 
C)  dynein arm 
D)  centrosome 
E)  None of the choices are correct.

Question 4

Which of the following statements concerning membrane transport across the plasma membrane is true?

Accepted Answer

A)  Polar molecules are transported more easily than nonpolar molecules. 
B)  Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. 
C)  Water cannot move through the membrane. 
D)  Generally, cations pass through the membrane more easily than anions. 
E)  All molecules are moved across by active transport. 
A)  Polar molecules are transported more easily than nonpolar molecules. 
B)  Lipid-soluble substances pass through the membrane by dissolving in the lipid bilayer. 
C)  Water cannot move through the membrane. 
D)  Generally, cations pass through the membrane more easily than anions. 
E)  All molecules are moved across by active transport.

Question 5

-What structure does "B" 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 6

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

Question 7

Which organelle contains chromosomes?

Accepted Answer

A)  Nucleus 
B)  Ribosomes 
C)  Lysosomes 
D)  Smooth ER 
E)  Centrioles 
A)  Nucleus 
B)  Ribosomes 
C)  Lysosomes 
D)  Smooth ER 
E)  Centrioles

Question 8

Mitosis forms

Accepted Answer

A)  two daughter cells with half the DNA of the parent cell. 
B)  two daughter cells with the same amount of DNA as the parent cell. 
C)  daughter cells called gametes. 
D)  two daughter cells with twice the amount of DNA as the parent cell. 
E)  one daughter cell and another incomplete cell. 
A)  two daughter cells with half the DNA of the parent cell. 
B)  two daughter cells with the same amount of DNA as the parent cell. 
C)  daughter cells called gametes. 
D)  two daughter cells with twice the amount of DNA as the parent cell. 
E)  one daughter cell and another incomplete cell.

Question 9

Osmosis is the diffusion of ________ across a selectively permeable membrane.

Accepted Answer

A)  urea 
B)  oxygen 
C)  water 
D)  sodium 
E)  sugar 
A)  urea 
B)  oxygen 
C)  water 
D)  sodium 
E)  sugar

Question 10

What is mediated transport?

Accepted Answer

A)  The movement of molecules across a plasma membrane by means of a protein carrier 
B)  The movement of vesicles by intermediate filaments 
C)  The process of peptide synthesis on the surface of the ribosome 
D)  The ability of molecules to pass through the nuclear envelope 
A)  The movement of molecules across a plasma membrane by means of a protein carrier 
B)  The movement of vesicles by intermediate filaments 
C)  The process of peptide synthesis on the surface of the ribosome 
D)  The ability of molecules to pass through the nuclear envelope

Question 11

Which type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

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 12

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

Accepted Answer

A)  Interphase 
B)  Prophase 
C)  Metaphase 
D)  Anaphase 
E)  Telophase 
A)  Interphase 
B)  Prophase 
C)  Metaphase 
D)  Anaphase 
E)  Telophase

Question 13

The main components of the plasma membrane are

Accepted Answer

A)  carbohydrates, ions, and lipids. 
B)  lipids and ions. 
C)  proteins and carbohydrates. 
D)  proteins, lipids, and carbohydrates. 
E)  ions, lipids, and proteins. 
A)  carbohydrates, ions, and lipids. 
B)  lipids and ions. 
C)  proteins and carbohydrates. 
D)  proteins, lipids, and carbohydrates. 
E)  ions, lipids, and proteins.

Question 14

Cells of the small intestine and kidney tubules have extensions called ________, which increase their surface area.

Accepted Answer

A)  cilia 
B)  hairs 
C)  rugae 
D)  microvilli 
E)  flagella 
A)  cilia 
B)  hairs 
C)  rugae 
D)  microvilli 
E)  flagella

Question 15

If a toxic drug inhibited mRNA synthesis, which of the following would be most directly affected?

Accepted Answer

A)  Protein synthesis 
B)  Intracellular digestion 
C)  Microtubule production 
D)  Secretion of glycoproteins and lipoproteins 
E)  Active transport 
A)  Protein synthesis 
B)  Intracellular digestion 
C)  Microtubule production 
D)  Secretion of glycoproteins and lipoproteins 
E)  Active transport

Question 16

The transfer of information from DNA to messenger RNA (mRNA) is known as ________.

Accepted Answer

A)  transduction 
B)  translocation 
C)  translation 
D)  transcription 
E)  transmutation 
A)  transduction 
B)  translocation 
C)  translation 
D)  transcription 
E)  transmutation

Question 17

A toxic drug destroyed the Golgi apparatus. This would affect

Accepted Answer

A)  ribosomal RNA synthesis. 
B)  intracellular digestion. 
C)  energy production. 
D)  microtubule production. 
E)  packaging of glycoproteins and lipoproteins. 
A)  ribosomal RNA synthesis. 
B)  intracellular digestion. 
C)  energy production. 
D)  microtubule production. 
E)  packaging of glycoproteins and lipoproteins.

Question 18

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 19

The structural and functional unit of all living organisms is the ________.

Accepted Answer

A)  ribosome 
B)  cell 
C)  organ 
D)  organelle 
E)  plasma membrane 
A)  ribosome 
B)  cell 
C)  organ 
D)  organelle 
E)  plasma membrane

Question 20

A mRNA containing introns 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

Exam 3: Cell Biology

The movement of water through a selectively permeable membrane is called ________.

Check all of the major hypotheses of aging.

At the base of each cilium is a structure called the ________.

Which of the following statements concerning membrane transport across the plasma membrane is true?

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

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

Which organelle contains chromosomes?

Mitosis forms

Osmosis is the diffusion of ________ across a selectively permeable membrane.

What is mediated transport?

Which type of membrane proteins are integral proteins that move ions or molecules across plasma membrane?

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

The main components of the plasma membrane are

Cells of the small intestine and kidney tubules have extensions called ________, which increase their surface area.

If a toxic drug inhibited mRNA synthesis, which of the following would be most directly affected?

The transfer of information from DNA to messenger RNA (mRNA) is known as ________.

A toxic drug destroyed the Golgi apparatus. This would affect

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?

The structural and functional unit of all living organisms is the ________.

A mRNA containing introns is a ________.

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

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