Question 1

The process of duplicating chromosomes prior to cell division is called

Accepted Answer

A) replication. 
B) repetition. 
C) recurrence. 
D) remodeling. 
E) reassembling. 
A) replication. 
B) repetition. 
C) recurrence. 
D) remodeling. 
E) reassembling.

Question 2

Each of the following is a function of smooth endoplasmic reticulum except

Accepted Answer

A) storage and release of calcium ions. 
B) modification of protein. 
C) synthesis of steroid hormones. 
D) synthesis of triglycerides. 
E) detoxification of drugs. 
A) storage and release of calcium ions. 
B) modification of protein. 
C) synthesis of steroid hormones. 
D) synthesis of triglycerides. 
E) detoxification of drugs.

Question 3

The start of each gene begins with a(n)________ segment.

Accepted Answer

A) neocodon 
B) intron 
C) histone 
D) promotor 
E) boosting 
A) neocodon 
B) intron 
C) histone 
D) promotor 
E) boosting

Question 4

The DNA molecule is like a twisted ladder.What molecules form the "sides" of the DNA ladder?

Accepted Answer

A) alternating molecules of sugar and phosphate groups 
B) carbohydrates and lipids 
C) repeating molecules of acids and bases 
D) amino acids and protein 
E) nitrogen bases and sugar molecules 
A) alternating molecules of sugar and phosphate groups 
B) carbohydrates and lipids 
C) repeating molecules of acids and bases 
D) amino acids and protein 
E) nitrogen bases and sugar molecules

Question 5

What role does the sodium-potassium exchange pump play in stabilizing the resting membrane potential?

Accepted Answer

By ejecting sodium ions from the cytosol

Question 6

The anticodon for the triplet UCA is

Accepted Answer

A) AGU. 
B) AGC. 
C) TCA. 
D) TGT. 
E) AGT. 
A) AGU. 
B) AGC. 
C) TCA. 
D) TGT. 
E) AGT.

Question 7

Membrane proteins perform which of the following functions?

Accepted Answer

A) anchoring 
B) receptors 
C) recognition 
D) enzymes 
E) All of the answers are correct. 
A) anchoring 
B) receptors 
C) recognition 
D) enzymes 
E) All of the answers are correct.

Question 8

Which organelle is most prominent in cells that make large amounts of protein?

Accepted Answer

A) nucleus 
B) nucleolus 
C) chromosome 
D) proteasome 
E) mitochondria 
A) nucleus 
B) nucleolus 
C) chromosome 
D) proteasome 
E) mitochondria

Question 9

Tubulin is to microtubules as actin is to

Accepted Answer

A) ribosomes. 
B) microfilaments. 
C) intermediate filaments. 
D) flagella. 
E) microvilli. 
A) ribosomes. 
B) microfilaments. 
C) intermediate filaments. 
D) flagella. 
E) microvilli.

Question 10

Imagine two rigid chambers separated by a rigid membrane that is freely permeable to water but impermeable to glucose.Side 1 contains a 10 percent glucose solution and side 2 contains pure water.At equilibrium,what will be the situation?

Accepted Answer

A) Water will continue to move from side 1 to side 2. 
B) Water will continue to move from side 2 to side 1. 
C) The volume of water will be greater in side 1. 
D) The volume of water will be greater in side 2. 
E) It is impossible to determine the answer. 
A) Water will continue to move from side 1 to side 2. 
B) Water will continue to move from side 2 to side 1. 
C) The volume of water will be greater in side 1. 
D) The volume of water will be greater in side 2. 
E) It is impossible to determine the answer.

Question 11

Tubulin is a

Accepted Answer

A) carbohydrate that assembles into microtubules. 
B) lipid that assembles into microtubules. 
C) protein that assembles into microtubules. 
D) protein that forms the tubular portion of the cytosol. 
E) lipid that forms the ER. 
A) carbohydrate that assembles into microtubules. 
B) lipid that assembles into microtubules. 
C) protein that assembles into microtubules. 
D) protein that forms the tubular portion of the cytosol. 
E) lipid that forms the ER.

Question 12

Synthesis of lipids and glycogen takes place at the

Accepted Answer

A) ribosomes. 
B) rough ER. 
C) smooth ER. 
D) Golgi apparatus. 
E) mitochondria. 
A) ribosomes. 
B) rough ER. 
C) smooth ER. 
D) Golgi apparatus. 
E) mitochondria.

Question 13

Microfilaments

Accepted Answer

A) are usually composed of myosin. 
B) are hollow,filamentous structures. 
C) anchor the cytoskeleton to integral proteins of the cell membrane. 
D) interact with filaments composed of tubulin to produce muscle contractions. 
E) are found in the cytoplasm radiating away from the centrosome. 
A) are usually composed of myosin. 
B) are hollow,filamentous structures. 
C) anchor the cytoskeleton to integral proteins of the cell membrane. 
D) interact with filaments composed of tubulin to produce muscle contractions. 
E) are found in the cytoplasm radiating away from the centrosome.

Question 14

The skin swells and puckers during a long bath.This suggests that bath water is a(n)________ fluid.

Accepted Answer

A) isotonic 
B) hypotonic 
C) hypertonic 
D) diffusion 
E) toxic 
A) isotonic 
B) hypotonic 
C) hypertonic 
D) diffusion 
E) toxic

Question 15

Which of the following terms is/are not used to define the structure that separates the contents of a human cell from its surrounding medium?

Accepted Answer

A) cell wall 
B) cell membrane 
C) plasma membrane 
D) phospholipid bilayer 
E) both a cell wall and a phospholipid bilayer 
A) cell wall 
B) cell membrane 
C) plasma membrane 
D) phospholipid bilayer 
E) both a cell wall and a phospholipid bilayer

Question 16

What is the first part of the cell that is affected when the pH of extracellular fluid changes?

Accepted Answer

A) nucleus 
B) nucleolus 
C) the cytosol 
D) plasma membrane 
E) cytoskeleton 
A) nucleus 
B) nucleolus 
C) the cytosol 
D) plasma membrane 
E) cytoskeleton

Question 17

A point mutation involves a change in

Accepted Answer

A) a single nucleotide. 
B) the starter sequence. 
C) an entire codon. 
D) the promotor segment. 
E) the ribosomal subunit. 
A) a single nucleotide. 
B) the starter sequence. 
C) an entire codon. 
D) the promotor segment. 
E) the ribosomal subunit.

Question 18

Identify the mismatched pair.

Accepted Answer

A) receptor proteins - bind with enzymes 
B) channel proteins - provide passageway for ions 
C) recognition proteins - identify self 
D) carrier proteins - provide transport 
E) enzymes - speed up chemical reactions 
A) receptor proteins - bind with enzymes 
B) channel proteins - provide passageway for ions 
C) recognition proteins - identify self 
D) carrier proteins - provide transport 
E) enzymes - speed up chemical reactions

Question 19

The membrane potential in an undisturbed cell is called its

Accepted Answer

A) quiet potential. 
B) inactive state. 
C) passive state. 
D) resting membrane potential. 
E) interphase. 
A) quiet potential. 
B) inactive state. 
C) passive state. 
D) resting membrane potential. 
E) interphase.

Question 20

The process of forming mRNA is called

Accepted Answer

A) replication. 
B) transcription. 
C) translation. 
D) ribolation. 
E) auscultation. 
A) replication. 
B) transcription. 
C) translation. 
D) ribolation. 
E) auscultation.

Exam 3: The Cellular Level of Organization

The process of duplicating chromosomes prior to cell division is called

Each of the following is a function of smooth endoplasmic reticulum except

The start of each gene begins with a(n)________ segment.

The DNA molecule is like a twisted ladder.What molecules form the "sides" of the DNA ladder?

What role does the sodium-potassium exchange pump play in stabilizing the resting membrane potential?

The anticodon for the triplet UCA is

Membrane proteins perform which of the following functions?

Which organelle is most prominent in cells that make large amounts of protein?

Tubulin is to microtubules as actin is to

Imagine two rigid chambers separated by a rigid membrane that is freely permeable to water but impermeable to glucose.Side 1 contains a 10 percent glucose solution and side 2 contains pure water.At equilibrium,what will be the situation?

Tubulin is a

Synthesis of lipids and glycogen takes place at the

Microfilaments

The skin swells and puckers during a long bath.This suggests that bath water is a(n)________ fluid.

Which of the following terms is/are not used to define the structure that separates the contents of a human cell from its surrounding medium?

What is the first part of the cell that is affected when the pH of extracellular fluid changes?

A point mutation involves a change in

Identify the mismatched pair.

The membrane potential in an undisturbed cell is called its

The process of forming mRNA is called

An Introduction to Anatomy and Physiology

The Chemical Level of Organization

The Tissue Level of Organization

The Integumentary System

Osseous Tissue and Bone Structure

The Axial Skeleton

The Appendicular Skeleton

Joints

Muscle Tissue

The Muscular System

Neural Tissue

The Spinal Cord, spinal Nerves, and Spinal Reflexes

The Brain and Cranial Nerves

Sensory Pathways and the Somatic Nervous System

The Autonomic Nervous System and Higher-Order Functions

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels and Circulation

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

Metabolism and Energetics

The Urinary System

Fluid, electrolyte, and Acid-Base Balance

The Reproductive System

Development and Inheritance

Filters