Question 1

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 2

Which of the following can cross the plasma membrane because of its selective permeability?

Accepted Answer

A)  gases such as oxygen and carbon dioxide 
B)  ions 
C)  large, polar molecules 
D)  large, nonpolar molecules 
E)  glycoproteins 
A)  gases such as oxygen and carbon dioxide 
B)  ions 
C)  large, polar molecules 
D)  large, nonpolar molecules 
E)  glycoproteins

Question 3

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

Accepted Answer

A) True 
 B)False

Question 4

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 two 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 two identical cells. 
E)  The cellular metabolism increased in rate.

Question 5

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 6

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 7

In developing embryos such as a chicken, what restores the amount of surface area needed for exchange requirements?

Accepted Answer

A)  respiration 
B)  catabolism 
C)  anabolism 
D)  cell division 
E)  assimilation 
A)  respiration 
B)  catabolism 
C)  anabolism 
D)  cell division 
E)  assimilation

Question 8

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 9

Which of the following is not a function of the cytoskeleton?

Accepted Answer

A)  maintain a cell's shape 
B)  process proteins 
C)  anchor organelles 
D)  move organelles 
E)  move the entire cell 
A)  maintain a cell's shape 
B)  process proteins 
C)  anchor organelles 
D)  move organelles 
E)  move the entire cell

Question 10

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 11

What are the folds in mitochondrial membranes called?

Accepted Answer

A)  matrix 
B)  cristae 
C)  rugae 
D)  lumen 
E)  villi 
A)  matrix 
B)  cristae 
C)  rugae 
D)  lumen 
E)  villi

Question 12

Brett needs to distinguish two points that are 0.5 mm apart. What is the easiest way to do this?

Accepted Answer

A)  Use a transmission electron microscope. 
B)  Use a compound light microscope. 
C)  Use his eyes. 
D)  Use a magnifying glass. 
E)  Use a scanning electron microscope. 
A)  Use a transmission electron microscope. 
B)  Use a compound light microscope. 
C)  Use his eyes. 
D)  Use a magnifying glass. 
E)  Use a scanning electron microscope.

Question 13

What components make up the ribosomes?
A) proteins and rRNA
B) proteins and DNA
C) lipids and rRNA
D) carbohydrates and rRNA
E) proteins and DNA

Accepted Answer

The answer of What components make up the ribosomes?
A) proteins...

Question 14

What is the name of the semi-fluid medium inside the cell?

Accepted Answer

A)  nucleolus 
B)  cytoplasm 
C)  organelle 
D)  cytoskeleton 
E)  mitochondrion 
A)  nucleolus 
B)  cytoplasm 
C)  organelle 
D)  cytoskeleton 
E)  mitochondrion

Question 15

What cell structure is composed of a stack of slightly curved saccules that are important in packaging and secretion?

Accepted Answer

A)  mitochondria 
B)  vacuoles 
C)  Golgi apparatus 
D)  lysosomes 
E)  endoplasmic reticulum 
A)  mitochondria 
B)  vacuoles 
C)  Golgi apparatus 
D)  lysosomes 
E)  endoplasmic reticulum

Question 16

What is the maximum number of ATP molecules produced during aerobic respiration?

Accepted Answer

A)  38 
B)  36 
C)  32 
D)  2 
E)  4 
A)  38 
B)  36 
C)  32 
D)  2 
E)  4

Question 17

A solution is at equilibrium across a plasma membrane. If 50 molecules were to enter the cell, how many molecules would need to exit the cell in order to maintain the equilibrium?

Accepted Answer

A)  50 
B)  75 
C)  25 
D)  0 
E)  100 
A)  50 
B)  75 
C)  25 
D)  0 
E)  100

Question 18

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

Accepted Answer

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

Question 19

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

Accepted Answer

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

Question 20

During a hurricane, salt water invades fresh water marshes causing many of the plants to die. The plants are killed because the salt water solution is ________ to the plants, drawing water from their cells.

Accepted Answer

A)  isotonic 
B)  hypotonic 
C)  mesotonic 
D)  oligotonic 
E)  hypertonic 
A)  isotonic 
B)  hypotonic 
C)  mesotonic 
D)  oligotonic 
E)  hypertonic

Exam 3: Cell Structure and Function

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

Which of the following can cross the plasma membrane because of its selective permeability?

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

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

How large is a nuclear pore in the nuclear envelope?

Which of the following does not utilize active transport?

In developing embryos such as a chicken, what restores the amount of surface area needed for exchange requirements?

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

Which of the following is not a function of the cytoskeleton?

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

What are the folds in mitochondrial membranes called?

Brett needs to distinguish two points that are 0.5 mm apart. What is the easiest way to do this?

What components make up the ribosomes? A) proteins and rRNA B) proteins and DNA C) lipids and rRNA D) carbohydrates and rRNA E) proteins and DNA

What is the name of the semi-fluid medium inside the cell?

What cell structure is composed of a stack of slightly curved saccules that are important in packaging and secretion?

What is the maximum number of ATP molecules produced during aerobic respiration?

A solution is at equilibrium across a plasma membrane. If 50 molecules were to enter the cell, how many molecules would need to exit the cell in order to maintain the equilibrium?

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

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

During a hurricane, salt water invades fresh water marshes causing many of the plants to die. The plants are killed because the salt water solution is ________ to the plants, drawing water from their cells.

Human Organization

Chemistery of Life

Torganization and Regulation of Body Systems

Cardiovascular System : Heart and Blood Vessels

Cardiovascular System : Blood

The Lumphatic and Immune Systems

Biology of Infectious Diseases

Digestive System and Nutrition

Respiratory System

Urinary System

Skeletal System

Muscular System

Nervous System

Senses

Endocring System

Reproductive System

Development and Aging

Patterns of Chromosome Inheritance

Cancer

Patterns of Genetic Inheritance

Dna Piology and Technology

Hummen Evolution

Ecology and the Nature of Ecosystems

Hummen Interactions With the Biosphere

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