Question 1

Which of the following molecules contains the anticodon?

Accepted Answer

A) mRNA 
B) rRNA 
C) tRNA 
D) DNA 
E) None of these choices are correct. 
A) mRNA 
B) rRNA 
C) tRNA 
D) DNA 
E) None of these choices are correct.

Question 2

-Red blood cells (RBCs)have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is solution "C" relative to the RBC?

Accepted Answer

A) isotonic solution 
B) crenated 
C) hypertonic solution 
D) hemolyzed 
E) hypotonic solution 
A) isotonic solution 
B) crenated 
C) hypertonic solution 
D) hemolyzed 
E) hypotonic solution

Question 3

Which of the following events occurs in the nucleus?

Accepted Answer

A) ATP synthesis 
B) ribosomal proteins formed 
C) chromatin condenses to form chromosomes 
D) manufacture of phospholipids 
E) None of these events occurs in the nucleus. 
A) ATP synthesis 
B) ribosomal proteins formed 
C) chromatin condenses to form chromosomes 
D) manufacture of phospholipids 
E) None of these events occurs in the nucleus.

Question 4

Which of the following is NOT true of a transmission electron microscope (TEM)?

Accepted Answer

A) The electron beam is focused with electromagnets. 
B) The specimen must be fixed in plastic. 
C) The limit of resolution is about 0.1$\mu$m. 
D) Electrons are passed through the specimen. 
E) Gives the clearest three-dimensional images. 
A) The electron beam is focused with electromagnets. 
B) The specimen must be fixed in plastic. 
C) The limit of resolution is about 0.1$\mu$m. 
D) Electrons are passed through the specimen. 
E) Gives the clearest three-dimensional images.

Question 5

Before cell division occurs,DNA in the nucleus is condensed to form

Accepted Answer

A) RNA. 
B) genes. 
C) cytosol. 
D) chromosomes. 
E) chromatin. 
A) RNA. 
B) genes. 
C) cytosol. 
D) chromosomes. 
E) chromatin.

Question 6

Endoplasmic reticulum with ribosomes attached to it is called

Accepted Answer

A) nodular ER. 
B) smooth ER. 
C) dendritic ER. 
D) rough ER. 
E) bumpy ER. 
A) nodular ER. 
B) smooth ER. 
C) dendritic ER. 
D) rough ER. 
E) bumpy ER.

Question 7

Which of the following organelles function in the destruction of nonfunctional organelles?

Accepted Answer

A) basal bodies 
B) centrioles 
C) mitochondria 
D) endoplasmic reticulum 
E) lysosomes 
A) basal bodies 
B) centrioles 
C) mitochondria 
D) endoplasmic reticulum 
E) lysosomes

Question 8

There is a concentration differernce for Na+ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H+.This secondary active transport in the intestine works by the following.(Check all that apply.)

Accepted Answer

A) active transport of sodium out of the cell 
B) active transport of sodium into the cell 
C) carrier mediated transport of glucose into the cells 
D)  carrier mediated transport of sodium into the cell 
E) active transport of potassium out of the cell 
A) active transport of sodium out of the cell 
B) active transport of sodium into the cell 
C) carrier mediated transport of glucose into the cells 
D)  carrier mediated transport of sodium into the cell 
E) active transport of potassium out of the cell

Question 9

A cell can meet increased energy demands by an increase in

Accepted Answer

A) ribosomal subunits. 
B) the number of mitochondria. 
C) nuclear DNA activity. 
D) its overall size so it has more room to generate energy. 
E) lysosomal enzyme and ribosome activity within the cell. 
A) ribosomal subunits. 
B) the number of mitochondria. 
C) nuclear DNA activity. 
D) its overall size so it has more room to generate energy. 
E) lysosomal enzyme and ribosome activity within the cell.

Question 10

The main components of the plasma membrane are

Accepted Answer

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

Question 11

The organelles that are the source of the spindle fibers are the

Accepted Answer

A) lysosomes. 
B) mitochondria. 
C) centrioles. 
D) nucleus. 
E) ribosomes. 
A) lysosomes. 
B) mitochondria. 
C) centrioles. 
D) nucleus. 
E) ribosomes.

Question 12

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

Accepted Answer

A) phospholipid bilayer 
B) integral protein 
C) membrane channel protein 
D) peripheral protein 
E) internal membrane surface 
A) phospholipid bilayer 
B) integral protein 
C) membrane channel protein 
D) peripheral protein 
E) internal membrane surface

Question 13

The time between cell divisions is called

Accepted Answer

A) metaphase. 
B) interphase. 
C) prophase. 
D) telophase. 
E) anaphase. 
A) metaphase. 
B) interphase. 
C) prophase. 
D) telophase. 
E) anaphase.

Question 14

When a sperm cell comes into contact with an egg cell,there is a change in the electrical charge across the plasma membrane and various channel proteins close.These channels would be called

Accepted Answer

A) chemical-gated channels. 
B) ligand-gated channels. 
C) open-gated channels. 
D) nongated ion channels. 
E) voltage-gated channels. 
A) chemical-gated channels. 
B) ligand-gated channels. 
C) open-gated channels. 
D) nongated ion channels. 
E) voltage-gated channels.

Question 15

Chromosomes begin migrating towards poles of the cell during

Accepted Answer

A) anaphase. 
B) interphase. 
C) telophase. 
D) metaphase. 
E) prophase. 
A) anaphase. 
B) interphase. 
C) telophase. 
D) metaphase. 
E) prophase.

Question 16

_____________ pressure is the force required to prevent the movement of water by osmosis across a semipermeable membrane.

Accepted Answer

A) Filtration 
B) Hydrolic 
C) Hydration 
D) Osmotic 
E) Fluid 
A) Filtration 
B) Hydrolic 
C) Hydration 
D) Osmotic 
E) Fluid

Question 17

Which of the following correctly matches a nuclear structure with its function?

Accepted Answer

A) nuclear pores - allow molecules to move between the nucleus and cytoplasm. 
B) chromatin - fluid portion of the nucleus 
C) chromosomes - contains RNA and histones 
D) nuclear envelope - contains the nucleolar organizer 
E) nucleolus - DNA synthesis 
A) nuclear pores - allow molecules to move between the nucleus and cytoplasm. 
B) chromatin - fluid portion of the nucleus 
C) chromosomes - contains RNA and histones 
D) nuclear envelope - contains the nucleolar organizer 
E) nucleolus - DNA synthesis

Question 18

What organelles are small vacuoles containing oxidative enzymes?

Accepted Answer

A) peroxisomes 
B) flagellum 
C) endoplasmic reticulum 
D) Golgi apparatus 
E) nucleolus 
A) peroxisomes 
B) flagellum 
C) endoplasmic reticulum 
D) Golgi apparatus 
E) nucleolus

Question 19

Which of the following is NOT consistent with active transport?

Accepted Answer

A) uses cell energy 
B) movement is against a concentration gradient 
C) movement is with a concentration gradient 
D) exhibits competition and saturation 
E) involves a carrier 
A) uses cell energy 
B) movement is against a concentration gradient 
C) movement is with a concentration gradient 
D) exhibits competition and saturation 
E) involves a carrier

Question 20

A symporter will transport _____ across the cell membrane.

Accepted Answer

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

Exam 3: Cell Biology

Which of the following molecules contains the anticodon?

-Red blood cells (RBCs)have been placed in three different solutions: hypotonic,hypertonic,isotonic.What is solution "C" relative to the RBC?

Which of the following events occurs in the nucleus?

Which of the following is NOT true of a transmission electron microscope (TEM)?

Before cell division occurs,DNA in the nucleus is condensed to form

Endoplasmic reticulum with ribosomes attached to it is called

Which of the following organelles function in the destruction of nonfunctional organelles?

There is a concentration differernce for Na+ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H+.This secondary active transport in the intestine works by the following.(Check all that apply.)

A cell can meet increased energy demands by an increase in

The main components of the plasma membrane are

The organelles that are the source of the spindle fibers are the

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

The time between cell divisions is called

When a sperm cell comes into contact with an egg cell,there is a change in the electrical charge across the plasma membrane and various channel proteins close.These channels would be called

Chromosomes begin migrating towards poles of the cell during

_____________ pressure is the force required to prevent the movement of water by osmosis across a semipermeable membrane.

Which of the following correctly matches a nuclear structure with its function?

What organelles are small vacuoles containing oxidative enzymes?

Which of the following is NOT consistent with active transport?

A symporter will transport _____ across the cell membrane.

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,electrolyte,and Acid-Based Balance

Reproductive System

Development,growth,aging,and Genetics

Filters

There is a concentration differernce for Na⁺ into intestinal epithelial cells.This gradient provides the energy for the symport of glucose and in some cells,the antiport of H⁺.This secondary active transport in the intestine works by the following.(Check all that apply.)