Question 1

White blood cells engulf foreign particles by means of

Accepted Answer

A) macrocytosis. 
B) phagocytosis. 
C) exocytosis. 
D) pinocytosis. 
E) prestocytosis. 
A) macrocytosis. 
B) phagocytosis. 
C) exocytosis. 
D) pinocytosis. 
E) prestocytosis. B

Question 2

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) DNA replication 
B) absorption of nutrients 
C) intracellular digestion 
D) modification of protein 
E) secretion of lipids 
A) DNA replication 
B) absorption of nutrients 
C) intracellular digestion 
D) modification of protein 
E) secretion of lipids C

Question 3

Which of these molecules is correctly matched with its method of movement through the cell membrane?

Accepted Answer

A) lipid-soluble molecules - pass through membrane channels 
B) small,water-soluble molecules (ions)- dissolve in double phospholipid layer 
C) large,water-soluble molecules - transported by carrier-mediated processes 
D) glucose and amino acid molecules - pass through membrane channels 
E) All of these are correctly paired. 
A) lipid-soluble molecules - pass through membrane channels 
B) small,water-soluble molecules (ions)- dissolve in double phospholipid layer 
C) large,water-soluble molecules - transported by carrier-mediated processes 
D) glucose and amino acid molecules - pass through membrane channels 
E) All of these are correctly paired. C

Question 4

If a 0.9% NaCl (saline)solution is isotonic to a cell,then a solution of 3.5% NaCl would be

Accepted Answer

A) hypertonic to the cell. 
B) isotonic to the cell. 
C) hypotonic to the cell. 
D) catatonic to the cell. 
E) All of these choices are correct. 
A) hypertonic to the cell. 
B) isotonic to the cell. 
C) hypotonic to the cell. 
D) catatonic to the cell. 
E) All of these choices are correct.

Question 5

If you compare a cell with a manufacturing plant that exports goods,the cell's _____ could be compared to the manufacturing plant's shipping department.

Accepted Answer

A) nucleus 
B) lysosome 
C) Golgi apparatus 
D) endoplasmic reticulum 
E) ribosome 
A) nucleus 
B) lysosome 
C) Golgi apparatus 
D) endoplasmic reticulum 
E) ribosome

Question 6

Translation

Accepted Answer

A) takes place in the nucleus. 
B) requires three types of DNA. 
C) requires the pairing of codons on mRNA with anticodons on tRNA. 
D) involves synthesis of RNA from DNA molecules. 
E) requires replication of DNA. 
A) takes place in the nucleus. 
B) requires three types of DNA. 
C) requires the pairing of codons on mRNA with anticodons on tRNA. 
D) involves synthesis of RNA from DNA molecules. 
E) requires replication of DNA.

Question 7

In order to study in detail the anatomy of internal cell parts,it would be best to use

Accepted Answer

A) a transmission electron microscope (TEM). 
B) a scanning electron microscope (SEM). 
C) tissue cultures. 
D) flashlights. 
E) x-rays. 
A) a transmission electron microscope (TEM). 
B) a scanning electron microscope (SEM). 
C) tissue cultures. 
D) flashlights. 
E) x-rays.

Question 8

Which of the following structures is found in the nucleus?

Accepted Answer

A) chromosome 
B) flattened membrane sacs 
C) cisternae 
D) cristae 
E) cytosol 
A) chromosome 
B) flattened membrane sacs 
C) cisternae 
D) cristae 
E) cytosol

Question 9

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

Accepted Answer

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

Question 10

What organelle packages materials for secretion from the cell?

Accepted Answer

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

Question 11

Nucleoli

Accepted Answer

A) are located in the cytoplasm. 
B) are important for the formation of the Golgi apparatus. 
C) have a distinct membrane. 
D) regulate movement of materials into the nucleus. 
E) produce ribosomal subunits. 
A) are located in the cytoplasm. 
B) are important for the formation of the Golgi apparatus. 
C) have a distinct membrane. 
D) regulate movement of materials into the nucleus. 
E) produce ribosomal subunits.

Question 12

What is the organelle where subunits of ribosomes are manufactured?

Accepted Answer

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

Question 13

The presence of a cellular clock,presence of "death genes" and damage to DNA or mitochondria are all theories of _____.

Accepted Answer

A)  cleavage 
B)  death 
C)  aging 
D)  differentiation 
A)  cleavage 
B)  death 
C)  aging 
D)  differentiation

Question 14

Communication between cells is essential to coordinate the activity of the trillions of cells that make up the human body.Which of the following is (are)directly involved in carrying out communication between cells?

Accepted Answer

A) lipid bilayer of the plasma membrane 
B) both receptor proteins of the plasma membrane and chemical signal molecules released by cells 
C) receptor proteins of the plasma membrane 
D) mitochondria 
E) chemical signal molecules released by cells 
A) lipid bilayer of the plasma membrane 
B) both receptor proteins of the plasma membrane and chemical signal molecules released by cells 
C) receptor proteins of the plasma membrane 
D) mitochondria 
E) chemical signal molecules released by cells

Question 15

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "E"?

Accepted Answer

A) major site of ATP synthesis when oxygen is available 
B) contains digestive enzymes 
C) directs cellular activities,contains DNA 
D) site of protein synthesis 
E) outer boundary of cell,controls entry and exit of substances 
A) major site of ATP synthesis when oxygen is available 
B) contains digestive enzymes 
C) directs cellular activities,contains DNA 
D) site of protein synthesis 
E) outer boundary of cell,controls entry and exit of substances

Question 16

In prophase

Accepted Answer

A) cytokinesis occurs. 
B) DNA is synthesized. 
C) the chromosomes replicate. 
D) the chromosomes condense,shorten,and thicken. 
E) the spindle fibers disappear. 
A) cytokinesis occurs. 
B) DNA is synthesized. 
C) the chromosomes replicate. 
D) the chromosomes condense,shorten,and thicken. 
E) the spindle fibers disappear.

Question 17

Receptor-mediated endocytosis

Accepted Answer

A) moves materials out of the cell. 
B) is a type of passive transport. 
C) exhibits specificity. 
D) does not need ATP; the receptors supply the energy. 
E) occurs if oxygen is available. 
A) moves materials out of the cell. 
B) is a type of passive transport. 
C) exhibits specificity. 
D) does not need ATP; the receptors supply the energy. 
E) occurs if oxygen is available.

Question 18

Which of the following is NOT a type of cancer therapy?

Accepted Answer

A) use of drugs to increase the blood supply to the tumor 
B) killing tissue with lasers 
C) surgical removal of the tissue 
D) killing tissue with x-rays 
E) use of drugs to kill cells 
A) use of drugs to increase the blood supply to the tumor 
B) killing tissue with lasers 
C) surgical removal of the tissue 
D) killing tissue with x-rays 
E) use of drugs to kill cells

Question 19

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "C"?

Accepted Answer

A) contains digestive enzymes 
B) directs cellular activities,contains DNA 
C) outer boundary of cell,controls entry and exit of substances 
D) major site of ATP synthesis when oxygen is available 
E) site of protein synthesis 
A) contains digestive enzymes 
B) directs cellular activities,contains DNA 
C) outer boundary of cell,controls entry and exit of substances 
D) major site of ATP synthesis when oxygen is available 
E) site of protein synthesis

Question 20

In the process of diffusion,net movement of substances is always from a region

Accepted Answer

A) outside the cell to a region inside the cell. 
B) inside the cell to a region outside the cell. 
C) of lower concentration to a region of higher concentration. 
D) of higher concentration to a region of lower concentration. 
E) None of these choices are correct. 
A) outside the cell to a region inside the cell. 
B) inside the cell to a region outside the cell. 
C) of lower concentration to a region of higher concentration. 
D) of higher concentration to a region of lower concentration. 
E) None of these choices are correct.

Exam 3: Cell Biology

White blood cells engulf foreign particles by means of

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?

Which of these molecules is correctly matched with its method of movement through the cell membrane?

If a 0.9% NaCl (saline)solution is isotonic to a cell,then a solution of 3.5% NaCl would be

If you compare a cell with a manufacturing plant that exports goods,the cell's _____ could be compared to the manufacturing plant's shipping department.

Translation

In order to study in detail the anatomy of internal cell parts,it would be best to use

Which of the following structures is found in the nucleus?

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

What organelle packages materials for secretion from the cell?

Nucleoli

What is the organelle where subunits of ribosomes are manufactured?

The presence of a cellular clock,presence of "death genes" and damage to DNA or mitochondria are all theories of _____.

Communication between cells is essential to coordinate the activity of the trillions of cells that make up the human body.Which of the following is (are)directly involved in carrying out communication between cells?

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "E"?

In prophase

Receptor-mediated endocytosis

Which of the following is NOT a type of cancer therapy?

-The cell is the basic unit of life.All cellular structures exhibit special functions.Match the structure with its function.What is the function of "C"?

In the process of diffusion,net movement of substances is always from a region

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

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