Question 1

The grainy-looking substance inside the nucleus is composed of

Accepted Answer

A) phospholipids. 
B) DNA and proteins. 
C) nucleoplasm. 
D) ribosomes. 
E) mitochondria. 
A) phospholipids. 
B) DNA and proteins. 
C) nucleoplasm. 
D) ribosomes. 
E) mitochondria.

Question 2

In an experiment in the laboratory,a small colored molecule is injected into one cell.Within minutes,the molecule has entered the adjacent cells.What type of junctions connect these cells?

Accepted Answer

A) gap junctions 
B) free junctions 
C) adhesion junctions 
D) tight junctions 
E) actin junctions 
A) gap junctions 
B) free junctions 
C) adhesion junctions 
D) tight junctions 
E) actin junctions

Question 3

________ are the fundamental units that make up all living things.

Accepted Answer

A) Compartments 
B) Cells 
C) Chromosomes 
D) Coelom 
E) Cristae 
A) Compartments 
B) Cells 
C) Chromosomes 
D) Coelom 
E) Cristae

Question 4

Because bacteria are prokaryotes,they do not have DNA.

Accepted Answer

A) True 
 B)False

Question 5

Since all organisms carry on cellular respiration,all living cells must contain mitochondria.

Accepted Answer

A) True 
 B)False

Question 6

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

Accepted Answer

A) True 
 B)False

Question 7

If a cell has a volume of 3nm,what are the surface area and the volume of the cell?

Accepted Answer

A) 24nm2,8nm3 
B) 38nm2,16nm3 
C) 54nm2,27nm3 
D) 64nm2,24nm3 
E) 18nm2,6nm3 
A) 24nm2,8nm3 
B) 38nm2,16nm3 
C) 54nm2,27nm3 
D) 64nm2,24nm3 
E) 18nm2,6nm3

Question 8

Which of the following is not associated with the cytoskeleton?

Accepted Answer

A) intermediate filaments 
B) microtubules 
C) microbodies 
D) actin filaments 
E) centrosome 
A) intermediate filaments 
B) microtubules 
C) microbodies 
D) actin filaments 
E) centrosome

Question 9

Explain what occurs during endocytosis.

Accepted Answer

During endocytosis a portion of the plas

Question 10

Which of the following protein fibers is used for cellular movement and are extremely thin in size?

Accepted Answer

A) actin filaments 
B) intermediate filaments 
C) microtubules 
D) centrosome 
E) cilia 
A) actin filaments 
B) intermediate filaments 
C) microtubules 
D) centrosome 
E) cilia

Question 11

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

Accepted Answer

A) hypertonic 
B) isotonic 
C) hypotonic 
D) pretonic 
E) osmotonic 
A) hypertonic 
B) isotonic 
C) hypotonic 
D) pretonic 
E) osmotonic

Question 12

The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a

Accepted Answer

A) plasma membrane. 
B) Sanger enclosure. 
C) hydrophobic membrane. 
D) dialysis membrane. 
E) mosaic membranE. 
A) plasma membrane. 
B) Sanger enclosure. 
C) hydrophobic membrane. 
D) dialysis membrane. 
E) mosaic membranE.

Question 13

The gel-like fluid substance within a mitochondrion is called the

Accepted Answer

A) matrix. 
B) cristae. 
C) rugae. 
D) effluvium. 
E) villi. 
A) matrix. 
B) cristae. 
C) rugae. 
D) effluvium. 
E) villi.

Question 14

Choose the CORRECT statement about solute concentrations or particles inside and outside the cell.

Accepted Answer

A) In a hypertonic solution,there are more particles inside the cell. 
B) In a hypotonic solution,there are more particles outside the cell. 
C) In an isotonic solution the amount of water inside and outside the cell is equal. 
D) In a hypertonic solution,there is more water outside the cell. 
E) In a hypotonic solution,there is more water inside the cell. 
A) In a hypertonic solution,there are more particles inside the cell. 
B) In a hypotonic solution,there are more particles outside the cell. 
C) In an isotonic solution the amount of water inside and outside the cell is equal. 
D) In a hypertonic solution,there is more water outside the cell. 
E) In a hypotonic solution,there is more water inside the cell.

Question 15

Viruses are not made up of cells.According to cell theory,this means what?

Accepted Answer

A) Viruses can cause disease. 
B) Cells come only from pre-existing cells. 
C) Cells can be infected by viruses. 
D) Viruses are not living. 
E) Cells and viruses are the same thing. 
A) Viruses can cause disease. 
B) Cells come only from pre-existing cells. 
C) Cells can be infected by viruses. 
D) Viruses are not living. 
E) Cells and viruses are the same thing.

Question 16

The first day of football practice was rough on the squad.During practice the players complained of cramps and sore muscles.The reason for their complaints was that there was a __________________ build up in their muscles.

Accepted Answer

A) glucose 
B) alcohol 
C) carbon dioxide 
D) carbon monoxide 
E) lactate 
A) glucose 
B) alcohol 
C) carbon dioxide 
D) carbon monoxide 
E) lactate

Question 17

A short chain of sugar attached to a protein molecule on the plasma membrane is called

Accepted Answer

A) a protomembrane. 
B) a protosugar. 
C) a glycocalyx. 
D) a glycolipiD. 
E) a glycoprotein. 
A) a protomembrane. 
B) a protosugar. 
C) a glycocalyx. 
D) a glycolipiD. 
E) a glycoprotein.

Question 18

Which of the following does not utilize active transport?

Accepted Answer

A) movement of oxygen from the lungs into the blood 
B) concentrating iodine ions in the thyroid gland 
C) absorbing sugar in the gut 
D) water homeostasis in the kidneys 
E) movement of sodium and potassium in nerve cells 
A) movement of oxygen from the lungs into the blood 
B) concentrating iodine ions in the thyroid gland 
C) absorbing sugar in the gut 
D) water homeostasis in the kidneys 
E) movement of sodium and potassium in nerve cells

Question 19

Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods.This process is known as

Accepted Answer

A) pinocytosis. 
B) phagocytosis. 
C) exocytosis. 
D) facilitated transport. 
E) osmosis. 
A) pinocytosis. 
B) phagocytosis. 
C) exocytosis. 
D) facilitated transport. 
E) osmosis.

Question 20

Cilia are composed of microtubules while flagella are composed of actin filaments.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Function

The grainy-looking substance inside the nucleus is composed of

In an experiment in the laboratory,a small colored molecule is injected into one cell.Within minutes,the molecule has entered the adjacent cells.What type of junctions connect these cells?

________ are the fundamental units that make up all living things.

Because bacteria are prokaryotes,they do not have DNA.

Since all organisms carry on cellular respiration,all living cells must contain mitochondria.

The nucleus of a cell in your thigh muscle contains the same genes as the nucleus of a cell in your brain.

If a cell has a volume of 3nm,what are the surface area and the volume of the cell?

Which of the following is not associated with the cytoskeleton?

Explain what occurs during endocytosis.

Which of the following protein fibers is used for cellular movement and are extremely thin in size?

Often when a person is admitted to the hospital,an intravenous solution of normal saline is begun.Since this does not harm the patient,what is the tonicity of normal saline compared to your blood?

The phospholipid bilayer that surrounds/maintains the integrity of a cell is called a

The gel-like fluid substance within a mitochondrion is called the

Choose the CORRECT statement about solute concentrations or particles inside and outside the cell.

Viruses are not made up of cells.According to cell theory,this means what?

The first day of football practice was rough on the squad.During practice the players complained of cramps and sore muscles.The reason for their complaints was that there was a __________________ build up in their muscles.

A short chain of sugar attached to a protein molecule on the plasma membrane is called

Which of the following does not utilize active transport?

Sheree observed an amoeba feeding by engulfing the prey with its false feet or pseudopods.This process is known as

Cilia are composed of microtubules while flagella are composed of actin filaments.

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

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Senses

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Development and Aging

Patterns of Chromosome Inheritance

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Patterns of Genetic Inheritance

DNA Biology and Technology

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