Question 1

The molecule that brings the proper amino acid into place at the ribosome for the elongation of a new protein is called

Accepted Answer

A) mRNA. 
B) tRNA. 
C) ATP. 
D) Na-K. 
E) rRNA. 
A) mRNA. 
B) tRNA. 
C) ATP. 
D) Na-K. 
E) rRNA. B

Question 2

Figure 3-2 The Plasma membrane
Use Figure 3-2 to answer the following questions:
-What part of the plasma membrane is hydrophobic?

Accepted Answer

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

Question 3

Which form of endoplasmic reticulum modifies and packages newly synthesized proteins?

Accepted Answer

A) ribosomal endoplasmic reticulum 
B) proteosomes reticulum 
C) raised endoplasmic reticulum 
D) smooth endoplasmic reticulum 
E) rough endoplasmic reticulum 
A) ribosomal endoplasmic reticulum 
B) proteosomes reticulum 
C) raised endoplasmic reticulum 
D) smooth endoplasmic reticulum 
E) rough endoplasmic reticulum E

Question 4

During the synthesis of proteins,amino acids are assembled in the proper sequence because each tRNA molecule that brings them to the ribosome has a(n)________ that binds to a complementary codon in the mRNA.

Accepted Answer

A) enzyme 
B) nucleotide 
C) anticodon 
D) promotor 
E) transporter 
A) enzyme 
B) nucleotide 
C) anticodon 
D) promotor 
E) transporter

Question 5

Which of the following consists of a network of intracellular membranes with attached ribosomes?

Accepted Answer

A) rough endoplasmic reticulum 
B) smooth endoplasmic reticulum 
C) mitochondria 
D) nucleoli 
E) Golgi apparatus 
A) rough endoplasmic reticulum 
B) smooth endoplasmic reticulum 
C) mitochondria 
D) nucleoli 
E) Golgi apparatus

Question 6

The potential difference across the cell membrane is due to the separation of

Accepted Answer

A) carbohydrate molecules. 
B) water molecules. 
C) cations and anions. 
D) acids and bases. 
E) phospholipids and proteins. 
A) carbohydrate molecules. 
B) water molecules. 
C) cations and anions. 
D) acids and bases. 
E) phospholipids and proteins.

Question 7

The plasma membrane includes

Accepted Answer

A) integral proteins. 
B) glycolipids. 
C) phospholipids. 
D) cholesterol. 
E) All of the answers are correct. 
A) integral proteins. 
B) glycolipids. 
C) phospholipids. 
D) cholesterol. 
E) All of the answers are correct.

Question 8

Which of following properties of microtubules is correct?

Accepted Answer

A) made of myosin 
B) made of actin 
C) found only in the terminal web 
D) another term for microfilaments 
E) interact with dynein and kinesin 
A) made of myosin 
B) made of actin 
C) found only in the terminal web 
D) another term for microfilaments 
E) interact with dynein and kinesin

Question 9

Molecular motors that carry materials in opposite directions along microtubules are called

Accepted Answer

A) kinesin and myosin. 
B) actin and myosin. 
C) dynein and myosin. 
D) dynein and actin. 
E) dynein and kinesin. 
A) kinesin and myosin. 
B) actin and myosin. 
C) dynein and myosin. 
D) dynein and actin. 
E) dynein and kinesin.

Question 10

Thymine is replaced by which nitrogen base in RNA?

Accepted Answer

A) ribose 
B) uracil 
C) guanine 
D) thymine is not replaced in RNA 
E) cytosine 
A) ribose 
B) uracil 
C) guanine 
D) thymine is not replaced in RNA 
E) cytosine

Question 11

The endoplasmic reticulum is responsible for

Accepted Answer

A) drug and toxin neutralization. 
B) lipid synthesis. 
C) modification of new proteins. 
D) shipping molecules to the Golgi apparatus. 
E) All of the answers are correct. 
A) drug and toxin neutralization. 
B) lipid synthesis. 
C) modification of new proteins. 
D) shipping molecules to the Golgi apparatus. 
E) All of the answers are correct.

Question 12

Diffusion of a substance across the cell membrane is influenced by all of the following except

Accepted Answer

A) hydrolysis of ATP. 
B) the presence of the membrane channels. 
C) the charge on the ion. 
D) concentration gradient. 
E) lipid solubility. 
A) hydrolysis of ATP. 
B) the presence of the membrane channels. 
C) the charge on the ion. 
D) concentration gradient. 
E) lipid solubility.

Question 13

Generally,cells with a very brief interphase and lacking a G₀ phase

Accepted Answer

A) are stem cells. 
B) do not exhibit cytokinesis. 
C) have brief life spans. 
D) are reproductive cells. 
E) lack the enzyme DNA polymerase. 
A) are stem cells. 
B) do not exhibit cytokinesis. 
C) have brief life spans. 
D) are reproductive cells. 
E) lack the enzyme DNA polymerase.

Question 14

Define osmosis.

Accepted Answer

Osmosis is the transfer of wat

Question 15

Red blood cell shrinkage is to ________ as red blood cell bursting is to ________.

Accepted Answer

A) crenation; hemolysis 
B) lysis; crenation 
C) hypotonic; isotonic 
D) isotonic; hypotonic 
E) isotonic; hypertonic 
A) crenation; hemolysis 
B) lysis; crenation 
C) hypotonic; isotonic 
D) isotonic; hypotonic 
E) isotonic; hypertonic

Question 16

The functional units of DNA that contain the instructions for making one or more proteins are

Accepted Answer

A) chromosomes. 
B) genes. 
C) ribosomes. 
D) codons. 
E) RNA. 
A) chromosomes. 
B) genes. 
C) ribosomes. 
D) codons. 
E) RNA.

Question 17

A solution that contains a lower osmotic pressure than the cytoplasm of a cell is called

Accepted Answer

A) merotonic. 
B) hypertonic. 
C) isotonic. 
D) hypotonic. 
E) homotonic. 
A) merotonic. 
B) hypertonic. 
C) isotonic. 
D) hypotonic. 
E) homotonic.

Question 18

The duplication of DNA is called ________,the copying of DNA to mRNA is called ________,and the reading of the mRNA by the cell to make a protein is called ________.

Accepted Answer

A) replication; transcription; translation 
B) interphase; replication; active transport 
C) replication; translation; transcription 
D) mitosis; duplication; protein synthesis 
E) reproduction; duplication; initiation 
A) replication; transcription; translation 
B) interphase; replication; active transport 
C) replication; translation; transcription 
D) mitosis; duplication; protein synthesis 
E) reproduction; duplication; initiation

Question 19

During mitosis,two daughter cells form,each of which has

Accepted Answer

A) a different number of chromosomes than the original cell. 
B) twice as many chromosomes as the original cell. 
C) the same number of chromosomes as the original cell. 
D) a lesser number of chromosomes than the original cell. 
E) half as many chromosomes as the original cell. 
A) a different number of chromosomes than the original cell. 
B) twice as many chromosomes as the original cell. 
C) the same number of chromosomes as the original cell. 
D) a lesser number of chromosomes than the original cell. 
E) half as many chromosomes as the original cell.

Question 20

The "r" in rRNA stands for

Accepted Answer

A) regeneration. 
B) recurrence. 
C) rebuilding. 
D) ribosomal. 
E) radiation. 
A) regeneration. 
B) recurrence. 
C) rebuilding. 
D) ribosomal. 
E) radiation.

Exam 3: The Cellular Level of Organization

The molecule that brings the proper amino acid into place at the ribosome for the elongation of a new protein is called

Figure 3-2 The Plasma membrane Use Figure 3-2 to answer the following questions: -What part of the plasma membrane is hydrophobic?

Which form of endoplasmic reticulum modifies and packages newly synthesized proteins?

During the synthesis of proteins,amino acids are assembled in the proper sequence because each tRNA molecule that brings them to the ribosome has a(n)________ that binds to a complementary codon in the mRNA.

Which of the following consists of a network of intracellular membranes with attached ribosomes?

The potential difference across the cell membrane is due to the separation of

The plasma membrane includes

Which of following properties of microtubules is correct?

Molecular motors that carry materials in opposite directions along microtubules are called

Thymine is replaced by which nitrogen base in RNA?

The endoplasmic reticulum is responsible for

Diffusion of a substance across the cell membrane is influenced by all of the following except

Generally,cells with a very brief interphase and lacking a G₀ phase

Define osmosis.

Red blood cell shrinkage is to ________ as red blood cell bursting is to ________.

The functional units of DNA that contain the instructions for making one or more proteins are

A solution that contains a lower osmotic pressure than the cytoplasm of a cell is called

The duplication of DNA is called ________,the copying of DNA to mRNA is called ________,and the reading of the mRNA by the cell to make a protein is called ________.

During mitosis,two daughter cells form,each of which has

The "r" in rRNA stands for

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

Red blood cell shrinkage is to as red blood cell bursting is to .

The duplication of DNA is called ,the copying of DNA to mRNA is called ,and the reading of the mRNA by the cell to make a protein is called .