Question 1

The mitochondria are cell organelles that:

Accepted Answer

A) are the site of protein synthesis 
B) are the site of cell respiration 
C) synthesize carbohydrates for energy storage 
D) have enzymes to destroy pathogens 
A) are the site of protein synthesis 
B) are the site of cell respiration 
C) synthesize carbohydrates for energy storage 
D) have enzymes to destroy pathogens

Question 2

Some human cells have cilia,which:

Accepted Answer

A) sweep materials across the cell surface 
B) produce lipids for the cell membrane 
C) increase the surface area of the membrane 
D) produce proteins for the cell membrane 
A) sweep materials across the cell surface 
B) produce lipids for the cell membrane 
C) increase the surface area of the membrane 
D) produce proteins for the cell membrane

Question 3

If a DNA triplet is ATG,the corresponding mRNA triplet will be ___,and the corresponding tRNA triplet will be ___.

Accepted Answer

A) TAC/TAC 
B) UUC/AAG 
C) UAG/ATC 
D) UAC/AUG 
A) TAC/TAC 
B) UUC/AAG 
C) UAG/ATC 
D) UAC/AUG

Question 4

The genetic code is a triplet code,which means that:

Accepted Answer

A) three bases on the DNA are the code for one amino acid 
B) three pieces of DNA are the code for one protein 
C) three bases on the DNA are the code for one protein 
D) three chromosomes are the code for each protein 
A) three bases on the DNA are the code for one amino acid 
B) three pieces of DNA are the code for one protein 
C) three bases on the DNA are the code for one protein 
D) three chromosomes are the code for each protein

Question 5

The process of osmosis involves:

Accepted Answer

A) the movement of glucose through a membrane 
B) the movement of water to an area of lower salt concentration 
C) the diffusion of water through a membrane 
D) the movement of salts to an area of more water 
A) the movement of glucose through a membrane 
B) the movement of water to an area of lower salt concentration 
C) the diffusion of water through a membrane 
D) the movement of salts to an area of more water

Question 6

If human cells are placed in an isotonic solution,they will:

Accepted Answer

A) shrivel 
B) swell and burst 
C) remain the same 
D) none of these 
A) shrivel 
B) swell and burst 
C) remain the same 
D) none of these

Question 7

In protein synthesis,the genetic code of DNA is copied by:

Accepted Answer

A) mRNA 
B) tRNA 
C) amino acids 
D) ribosomes 
A) mRNA 
B) tRNA 
C) amino acids 
D) ribosomes

Question 8

The process of filtration is important to:

Accepted Answer

A) permit exchange of gases in body tissues 
B) form tissue fluid and bring nutrients to tissues 
C) enable cells to excrete water 
D) none of these 
A) permit exchange of gases in body tissues 
B) form tissue fluid and bring nutrients to tissues 
C) enable cells to excrete water 
D) none of these

Question 9

Which statement is NOT true of protein synthesis?

Accepted Answer

A) Transcription is the copying of DNA by mRNA. 
B) The sites of protein synthesis are the ribosomes in the cytoplasm. 
C) A codon is a three-base code for an amino acid. 
D) Translation is the copying of mRNA by tRNA. 
A) Transcription is the copying of DNA by mRNA. 
B) The sites of protein synthesis are the ribosomes in the cytoplasm. 
C) A codon is a three-base code for an amino acid. 
D) Translation is the copying of mRNA by tRNA.

Question 10

A solution with a greater salt concentration than cells is said to be:

Accepted Answer

A) hypertonic 
B) hypotonic 
C) isotonic 
D) ginantonic 
A) hypertonic 
B) hypotonic 
C) isotonic 
D) ginantonic

Question 11

The movement of molecules from an area of lesser concentration to an area of greater concentration is called:

Accepted Answer

A) diffusion 
B) filtration 
C) active transport 
D) facilitated diffusion 
A) diffusion 
B) filtration 
C) active transport 
D) facilitated diffusion

Question 12

The cell organelle that transports materials within a cell is the:

Accepted Answer

A) Golgi apparatus 
B) endoplasmic reticulum 
C) mitochondrion 
D) ribosome 
A) Golgi apparatus 
B) endoplasmic reticulum 
C) mitochondrion 
D) ribosome

Question 13

The process of mitosis produces ___ cells,each with the ___ number of chromosomes.

Accepted Answer

A) 2/diploid 
B) 2/haploid 
C) 4/diploid 
D) 4/haploid 
A) 2/diploid 
B) 2/haploid 
C) 4/diploid 
D) 4/haploid

Question 14

The first step in the formation of urine by the kidneys is the process of:

Accepted Answer

A) filtration 
B) osmosis 
C) facilitated diffusion 
D) diffusion 
A) filtration 
B) osmosis 
C) facilitated diffusion 
D) diffusion

Question 15

The cells of the small intestine absorb glucose and amino acids by the process of:

Accepted Answer

A) active transport 
B) diffusion 
C) pinocytosis 
D) phagocytosis 
A) active transport 
B) diffusion 
C) pinocytosis 
D) phagocytosis

Question 16

Cells of the kidney tubules are able to reabsorb small proteins by the process of:

Accepted Answer

A) facilitated diffusion 
B) phagocytosis 
C) active transport 
D) pinocytosis 
A) facilitated diffusion 
B) phagocytosis 
C) active transport 
D) pinocytosis

Question 17

Which statement is NOT true of human chromosomes?

Accepted Answer

A) They are made of DNA and protein. 
B) The DNA makes up the genes. 
C) Mature RBCs have no chromosomes. 
D) The diploid number is 43. 
A) They are made of DNA and protein. 
B) The DNA makes up the genes. 
C) Mature RBCs have no chromosomes. 
D) The diploid number is 43.

Question 18

In mitosis,the chromosomes become visible as short rods during:

Accepted Answer

A) prophase 
B) metaphase 
C) anaphase 
D) telophase 
A) prophase 
B) metaphase 
C) anaphase 
D) telophase

Question 19

Which statement is NOT true of cellular transport processes?

Accepted Answer

A) Tissue fluid is formed by osmosis. 
B) The kidneys reabsorb water by osmosis. 
C) Phagocytosis is a process used by WBCs. 
D) The small intestine absorbs amino acids by active transport. 
A) Tissue fluid is formed by osmosis. 
B) The kidneys reabsorb water by osmosis. 
C) Phagocytosis is a process used by WBCs. 
D) The small intestine absorbs amino acids by active transport.

Question 20

Which of these is NOT true of the cell membrane?

Accepted Answer

A) It selectively allows materials to enter the cell. 
B) It forms the outer boundary of the cell. 
C) It enables cells to respond to hormones. 
D) It is made of protein,glucose,and cholesterol. 
A) It selectively allows materials to enter the cell. 
B) It forms the outer boundary of the cell. 
C) It enables cells to respond to hormones. 
D) It is made of protein,glucose,and cholesterol.

Exam 4:Cells-Part C

The mitochondria are cell organelles that:

Some human cells have cilia,which:

If a DNA triplet is ATG,the corresponding mRNA triplet will be ___,and the corresponding tRNA triplet will be ___.

The genetic code is a triplet code,which means that:

The process of osmosis involves:

If human cells are placed in an isotonic solution,they will:

In protein synthesis,the genetic code of DNA is copied by:

The process of filtration is important to:

Which statement is NOT true of protein synthesis?

A solution with a greater salt concentration than cells is said to be:

The movement of molecules from an area of lesser concentration to an area of greater concentration is called:

The cell organelle that transports materials within a cell is the:

The process of mitosis produces ___ cells,each with the ___ number of chromosomes.

The first step in the formation of urine by the kidneys is the process of:

The cells of the small intestine absorb glucose and amino acids by the process of:

Cells of the kidney tubules are able to reabsorb small proteins by the process of:

Which statement is NOT true of human chromosomes?

In mitosis,the chromosomes become visible as short rods during:

Which statement is NOT true of cellular transport processes?

Which of these is NOT true of the cell membrane?

Organization and General Plan of the Body-Part A

Organization and General Plan of the Body-Part B

Organization and General Plan of the Body-Part C

Some Basic Chemistry-Part A

Some Basic Chemistry-Part B

Some Basic Chemistry-Part C

Cells-Part A

Cells-Part B

Tissues and Membranes-Part A

Tissues and Membranes-Part B

Tissues and Membranes-Part C

The Integumentary System-Part A

The Integumentary System-Part B

The Integumentary System-Part C

The Skeletal System-Part A

The Skeletal System-Part B

The Skeletal System-Part C

The Muscular System-Part A

The Muscular System-Part B

The Muscular System-Part C

The Nervous System-Part A

The Nervous System-Part B

The Nervous System-Part C

The Senses-Part A

The Senses-Part B

The Senses-Part C

The Endocrine System-Part A

The Endocrine System-Part B

The Endocrine System-Part C

Blood-Part A

Blood-Part B

Blood-Part C

The Heart-Part A

The Heart-Part B

The Heart-Part C

The Vascular System-Part A

The Vascular System-Part B

The Vascular System-Part C

The Lymphatic System and Immunity-Part A

The Lymphatic System and Immunity-Part B

The Lymphatic System and Immunity-Part C

The Respiratory System-Part A

The Respiratory System-Part B

The Respiratory System-Part C

The Digestive System-Part A

The Digestive System-Part B

The Digestive System-Part C

Body Temperature and Metabolism-Part A

Body Temperature and Metabolism-Part B

Body Temperature and Metabolism-Part C

The Urinary System-Part A

The Urinary System-Part B

The Urinary System-Part C

Fluid–Electrolyte and Acid–Base Balance-Part A

Fluid–Electrolyte and Acid–Base Balance-Part B

Fluid–Electrolyte and Acid–Base Balance-Part C

The Reproductive Systems-Part A

The Reproductive Systems-Part B

The Reproductive Systems-Part C

If a DNA triplet is ATG,the corresponding mRNA triplet will be _,and the corresponding tRNA triplet will be _.

The process of mitosis produces _ cells,each with the _ number of chromosomes.