Question 1

Organelles that break down fatty acids and hydrogen peroxide are

Accepted Answer

A) lysosomes. 
B) peroxisomes. 
C) endocytic vesicles. 
D) nuclei. 
E) toxisomes. 
A) lysosomes. 
B) peroxisomes. 
C) endocytic vesicles. 
D) nuclei. 
E) toxisomes.

Question 2

Water molecules and small ions enter a cell through

Accepted Answer

A) channels formed by integral proteins. 
B) peripheral proteins. 
C) lipid channels. 
D) peripheral carbohydrates. 
E) defects in the lipid layer of the membrane. 
A) channels formed by integral proteins. 
B) peripheral proteins. 
C) lipid channels. 
D) peripheral carbohydrates. 
E) defects in the lipid layer of the membrane.

Question 3

If a cell has 18 chromosomes and undergoes mitosis how many chromosomes would each daughter cell have?

Accepted Answer

A) 9 
B) 36 
C) 23 
D) 18 
E) The answer cannot be determined. 
A) 9 
B) 36 
C) 23 
D) 18 
E) The answer cannot be determined.

Question 4

Components of the cytoskeleton may include all of the following except

Accepted Answer

A) microfilaments. 
B) intermediate filaments. 
C) microsomes. 
D) microtubules. 
E) thick filaments. 
A) microfilaments. 
B) intermediate filaments. 
C) microsomes. 
D) microtubules. 
E) thick filaments.

Question 5

Osmotic pressure

Accepted Answer

A) forces water to move toward the higher solute concentration. 
B) forces water to move across a semipermeable membrane. 
C) can be opposed by hydrostatic pressure. 
D) increases as solute concentration increases. 
E) All of the answers are correct. 
A) forces water to move toward the higher solute concentration. 
B) forces water to move across a semipermeable membrane. 
C) can be opposed by hydrostatic pressure. 
D) increases as solute concentration increases. 
E) All of the answers are correct.

Question 6

What would the complimentary (matching)mRNA and tRNA molecules be from a DNA molecule that has the following triplets? coding strand: ATG-CAA
Template strand: TAC-GTT

Accepted Answer

A) mRNA: AUG-CAA, tRNA: TAC-GTT 
B) mRNA: ATG-CAA, tRNA: TAC-GTT 
C) mRNA: UAC-GUU, tRNA: AUG-CAA 
D) mRNA: TAC-GTT, tRNA: AUG-CAA 
E) mRNA: AUG-CAA, tRNA: UAC-GUU 
A) mRNA: AUG-CAA, tRNA: TAC-GTT 
B) mRNA: ATG-CAA, tRNA: TAC-GTT 
C) mRNA: UAC-GUU, tRNA: AUG-CAA 
D) mRNA: TAC-GTT, tRNA: AUG-CAA 
E) mRNA: AUG-CAA, tRNA: UAC-GUU

Question 7

Figure 3-2 The Plasma membrane
Use Figure 3-2 to answer the following questions:
-Which structure has a "gate" to control transport?

Accepted Answer

A) 1 
B) 2 
C) 4 
D) 7 
E) 8 
A) 1 
B) 2 
C) 4 
D) 7 
E) 8

Question 8

Permanent alterations in a cell's DNA that affect the nucleotide sequence of one or more genes are called

Accepted Answer

A) interferons. 
B) mutations. 
C) reconstructions. 
D) polymorphs. 
E) changelings. 
A) interferons. 
B) mutations. 
C) reconstructions. 
D) polymorphs. 
E) changelings.

Question 9

Which of the following statements about the Golgi apparatus is false?

Accepted Answer

A) It receives transport vesicles from the RER. 
B) It sends transport vesicles to the RER. 
C) It produces lysosomes. 
D) It supplies new membrane components. 
E) It produces secretory vesicles. 
A) It receives transport vesicles from the RER. 
B) It sends transport vesicles to the RER. 
C) It produces lysosomes. 
D) It supplies new membrane components. 
E) It produces secretory vesicles.

Question 10

Which of the following descriptors regarding cytoplasm is false?

Accepted Answer

A) extracellular fluid contains more protein 
B) the material that fills a cell 
C) variable consistency 
D) includes cytoskeleton 
E) includes cytosol 
A) extracellular fluid contains more protein 
B) the material that fills a cell 
C) variable consistency 
D) includes cytoskeleton 
E) includes cytosol

Question 11

A molecule of ________ contains all the codons needed to produce a particular polypeptide.

Accepted Answer

A) rRNA 
B) mRNA 
C) dRNA 
D) tRNA 
E) cRNA 
A) rRNA 
B) mRNA 
C) dRNA 
D) tRNA 
E) cRNA

Question 12

The ________ typically consists of five or six flattened membranous discs called cisternae.

Accepted Answer

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

Question 13

Differentiate between transcription and translation.

Accepted Answer

In transcription,RNA polymerase uses the

Question 14

The "m" in mRNA stands for

Accepted Answer

A) messenger. 
B) modifier. 
C) metabolic. 
D) molecular. 
E) matching. 
A) messenger. 
B) modifier. 
C) metabolic. 
D) molecular. 
E) matching.

Question 15

When is DNA replicated?

Accepted Answer

A) interphase 
B) anaphase 
C) metaphase 
D) telophase 
E) interkinesis 
A) interphase 
B) anaphase 
C) metaphase 
D) telophase 
E) interkinesis

Question 16

In a series of measurements of resting membrane potentials,the following values were recorded.Which one is likeliest to be an error?

Accepted Answer

A) -10 mV 
B) -20 mV 
C) -40 mV 
D) -70 mV 
E) +100 mV 
A) -10 mV 
B) -20 mV 
C) -40 mV 
D) -70 mV 
E) +100 mV

Question 17

Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are called ________ pumps.

Accepted Answer

A) channel 
B) receptor 
C) active 
D) motor 
E) ion 
A) channel 
B) receptor 
C) active 
D) motor 
E) ion

Question 18

The complex structures of DNA and protein found in the cell nucleus are

Accepted Answer

A) nucleoplasm. 
B) chromatin and histones. 
C) histones. 
D) nucleases. 
E) mitochondria. 
A) nucleoplasm. 
B) chromatin and histones. 
C) histones. 
D) nucleases. 
E) mitochondria.

Question 19

A process that requires cellular energy to move a substance against its concentration gradient is called

Accepted Answer

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

Question 20

The smallest living unit within the human body is

Accepted Answer

A) a protein. 
B) the cell. 
C) a tissue. 
D) an organ. 
E) an organ system. 
A) a protein. 
B) the cell. 
C) a tissue. 
D) an organ. 
E) an organ system.

Exam 3: The Cellular Level of Organization

Organelles that break down fatty acids and hydrogen peroxide are

Water molecules and small ions enter a cell through

If a cell has 18 chromosomes and undergoes mitosis how many chromosomes would each daughter cell have?

Components of the cytoskeleton may include all of the following except

Osmotic pressure

What would the complimentary (matching)mRNA and tRNA molecules be from a DNA molecule that has the following triplets? coding strand: ATG-CAA Template strand: TAC-GTT

Figure 3-2 The Plasma membrane Use Figure 3-2 to answer the following questions: -Which structure has a "gate" to control transport?

Permanent alterations in a cell's DNA that affect the nucleotide sequence of one or more genes are called

Which of the following statements about the Golgi apparatus is false?

Which of the following descriptors regarding cytoplasm is false?

A molecule of ________ contains all the codons needed to produce a particular polypeptide.

The ________ typically consists of five or six flattened membranous discs called cisternae.

Differentiate between transcription and translation.

The "m" in mRNA stands for

When is DNA replicated?

In a series of measurements of resting membrane potentials,the following values were recorded.Which one is likeliest to be an error?

Membrane-bound proteins that use metabolic energy to move ions across the plasma membrane are called ________ pumps.

The complex structures of DNA and protein found in the cell nucleus are

A process that requires cellular energy to move a substance against its concentration gradient is called

The smallest living unit within the human body is

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

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