Question 1

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

Accepted Answer

A) True 
 B)False  False

Question 2

The cytoplasm is not considered a cellular organelle.

Accepted Answer

A) True 
 B)False  True

Question 3

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

Accepted Answer

A) exocytosis 
B) phagocytosis 
C) pinocytosis 
D) receptor-mediated endocytosis 
E) endocytosis 
A) exocytosis 
B) phagocytosis 
C) pinocytosis 
D) receptor-mediated endocytosis 
E) endocytosis A

Question 4

Fermentation produces more ATP than does aerobic respiration.

Accepted Answer

A) True 
 B)False

Question 5

Only glucose can be used as an energy source in the human body.

Accepted Answer

A) True 
 B)False

Question 6

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

Accepted Answer

A) one 
B) two 
C) three 
D) four 
E) five 
A) one 
B) two 
C) three 
D) four 
E) five

Question 7

During exocytosis,the phospholipids present in the vesicle membrane will end up in the plasma membrane.

Accepted Answer

A) True 
 B)False

Question 8

What is the main function of the ribosomes in the cell?

Accepted Answer

A) to synthesize proteins 
B) to synthesize DNA 
C) to breakdown proteins into individual amino acids 
D) to form the nuclear envelope 
E) to provide strength and structural support for the cell membrane 
A) to synthesize proteins 
B) to synthesize DNA 
C) to breakdown proteins into individual amino acids 
D) to form the nuclear envelope 
E) to provide strength and structural support for the cell membrane

Question 9

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

Accepted Answer

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

Question 10

What components make up the ribosomes?

Accepted Answer

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

Question 11

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

Accepted Answer

A) Protists 
B) Protoctista 
C) Archaea 
D) Archetista 
E) Eukarya 
A) Protists 
B) Protoctista 
C) Archaea 
D) Archetista 
E) Eukarya

Question 12

The sum of all of the chemical reactions that occur in a cell collectively are called

Accepted Answer

A) respiration. 
B) anabolism. 
C) photosynthesis. 
D) metabolism. 
E) reaction summary. 
A) respiration. 
B) anabolism. 
C) photosynthesis. 
D) metabolism. 
E) reaction summary.

Question 13

What is the function of cholesterol in the plasma membrane?

Accepted Answer

A) cell marker 
B) receptor 
C) support 
D) channel 
E) enzyme 
A) cell marker 
B) receptor 
C) support 
D) channel 
E) enzyme

Question 14

Why is glycolysis believed to have evolved early in the history of life?

Accepted Answer

A) It breaks down sugar. 
B) It produces energy. 
C) It is present in most every type of cell. 
D) It does not require oxygen. 
E) It splits a 6-carbon molecule into two 3-carbon molecules. 
A) It breaks down sugar. 
B) It produces energy. 
C) It is present in most every type of cell. 
D) It does not require oxygen. 
E) It splits a 6-carbon molecule into two 3-carbon molecules.

Question 15

What cellular organelle is especially abundant in phagocytic white blood cells?

Accepted Answer

A) nuclei 
B) nucleoli 
C) Golgi apparati 
D) lysosomes 
E) ribosomes 
A) nuclei 
B) nucleoli 
C) Golgi apparati 
D) lysosomes 
E) ribosomes

Question 16

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

Accepted Answer

A) nucleus 
B) nucleolus 
C) nuclear envelope 
D) nucleoplasm 
E) endoplasmic reticulum 
A) nucleus 
B) nucleolus 
C) nuclear envelope 
D) nucleoplasm 
E) endoplasmic reticulum

Question 17

How large is a nuclear pore in the nuclear envelope?

Accepted Answer

A) larger than a ribosome 
B) larger than the Golgi apparatus 
C) larger than the endoplasmic reticulum 
D) smaller than a ribosome 
E) smaller than a protein 
A) larger than a ribosome 
B) larger than the Golgi apparatus 
C) larger than the endoplasmic reticulum 
D) smaller than a ribosome 
E) smaller than a protein

Question 18

Explain the functions of adhesion junctions,gap junctions,and tight junctions in human cells.

Accepted Answer

Adhesion junctions serve to mechanically

Question 19

Which of the following is not a function of the plasma membrane?

Accepted Answer

A) determines which substances enter and leave the cell 
B) serves as a boundary between the cell and its environment 
C) contains receptor sites which determine how the cell interacts with its environment 
D) contains the genetic information 
E) marks the cell as belonging to a particular individual 
A) determines which substances enter and leave the cell 
B) serves as a boundary between the cell and its environment 
C) contains receptor sites which determine how the cell interacts with its environment 
D) contains the genetic information 
E) marks the cell as belonging to a particular individual

Question 20

Brad placed a drop of blood in some distilled water.What happened in the red blood cells?

Accepted Answer

A) The cells shrunk. 
B) The cells burst. 
C) The cells did not change. 
D) The cells divided into 2 identical cells. 
E) The cellular metabolism increased in ratE. 
A) The cells shrunk. 
B) The cells burst. 
C) The cells did not change. 
D) The cells divided into 2 identical cells. 
E) The cellular metabolism increased in ratE.

Exam 3: Cell Structure and Function

In the sodium potassium pump,sodium and potassium are both pumped out of the cell via active transport.

The cytoplasm is not considered a cellular organelle.

Which of the following processes moves large molecules across a membrane in the opposite direction of the others?

Fermentation produces more ATP than does aerobic respiration.

Only glucose can be used as an energy source in the human body.

In a metabolic pathway,substrate Z is broken down to form product Y and X.Y is further broken down into products V and W.How many enzymes are required for this metabolic pathway?

During exocytosis,the phospholipids present in the vesicle membrane will end up in the plasma membrane.

What is the main function of the ribosomes in the cell?

The assisted transport of a molecule across the cell membrane without an expenditure of energy is known as what?

What components make up the ribosomes?

Paleontologists have discovered ancient prokaryotic fossils dated at over 3.5 billion years old.These fossils resemble prokaryotes that are capable of living in extreme conditions such as high temperature and salinity.What domain do these prokaryotes belong to?

The sum of all of the chemical reactions that occur in a cell collectively are called

What is the function of cholesterol in the plasma membrane?

Why is glycolysis believed to have evolved early in the history of life?

What cellular organelle is especially abundant in phagocytic white blood cells?

What is the obvious dark-stained structure within the nucleus that contains ribosomal RNA called?

How large is a nuclear pore in the nuclear envelope?

Explain the functions of adhesion junctions,gap junctions,and tight junctions in human cells.

Which of the following is not a function of the plasma membrane?

Brad placed a drop of blood in some distilled water.What happened in the red blood cells?

Exploring Life and Science

Chemistry of Life

Organization and Regulation of Body Systems

Cardiovascular System: Heart and Blood Vessels

Cardiovascular System: Blood

The Lymphatic and Immune Systems

Biology of Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocrine System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

DNA Biology and Technology

Human Evolution

Global Ecology and Human Interferences

Human Population,global Resources,and Conservation

Filters