Question 1

Why are cells called "the fundamental unit of life"?

Accepted Answer

A)  All known organisms have one or more cells. 
B)  Earliest life on Earth is hypothesized to have been single-celled. 
C)  Some cells are separate living entities that can survive individually. 
D)  Cells are the smallest unit of life that can function independently. 
E)  All answers are correct. 
A)  All known organisms have one or more cells. 
B)  Earliest life on Earth is hypothesized to have been single-celled. 
C)  Some cells are separate living entities that can survive individually. 
D)  Cells are the smallest unit of life that can function independently. 
E)  All answers are correct. E

Question 2

Some prokaryotes do have internal membranes,used in detecting gravity.

Accepted Answer

A) True 
 B)False  False

Question 3

What type of membrane protein is involved in creating anchoring junctions between animal cells?

Accepted Answer

A)  transport proteins 
B)  enzymes 
C)  recognition proteins 
D)  adhesion proteins 
E)  receptor proteins 
A)  transport proteins 
B)  enzymes 
C)  recognition proteins 
D)  adhesion proteins 
E)  receptor proteins D

Question 4

The cytoskeleton consists of microtubules,microfilaments,and intermediate filaments.

Accepted Answer

A) True 
 B)False

Question 5

Which of the following do plants use to transport nutrients between adjacent cells?

Accepted Answer

A)  tight junction 
B)  gap junction 
C)  plasmodesmata 
D)  anchoring junction 
E)  cell wall 
A)  tight junction 
B)  gap junction 
C)  plasmodesmata 
D)  anchoring junction 
E)  cell wall

Question 6

Which of the following organelles would help you differentiate between plant and animal cells?

Accepted Answer

A)  a centriole 
B)  a ribosome 
C)  a cell membrane 
D)  a peroxisome 
E)  a chloroplast 
A)  a centriole 
B)  a ribosome 
C)  a cell membrane 
D)  a peroxisome 
E)  a chloroplast

Question 7

Which of the following roles is not performed by the rough endoplasmic reticulum nor the smooth endoplasmic reticulum?

Accepted Answer

A)  protein production 
B)  lipid production 
C)  detoxification of poisons 
D)  DNA production 
E)  vesicle formation for transport to the Golgi apparatus 
A)  protein production 
B)  lipid production 
C)  detoxification of poisons 
D)  DNA production 
E)  vesicle formation for transport to the Golgi apparatus

Question 8

The phospholipid bilayer of membranes allows lipids and small nonpolar molecules to pass across membranes,but prohibits the passage of ions and polar molecules.This occurs because the phospholipid tails are

Accepted Answer

A)  always saturated. 
B)  hydrophilic and hydrophobic. 
C)  always unsaturated. 
D)  hydrophilic and selectively permeable. 
E)  hydrophobic and selectively permeable. 
A)  always saturated. 
B)  hydrophilic and hydrophobic. 
C)  always unsaturated. 
D)  hydrophilic and selectively permeable. 
E)  hydrophobic and selectively permeable.

Question 9

Chloroplasts are known for all of the following except being

Accepted Answer

A)  glucose factories. 
B)  responsible for respiration. 
C)  found in plants. 
D)  organelles that carry out photosynthesis. 
E)  found in some protists. 
A)  glucose factories. 
B)  responsible for respiration. 
C)  found in plants. 
D)  organelles that carry out photosynthesis. 
E)  found in some protists.

Question 10

Scientists have discovered a few prokaryotic cells do have internal membranes.

Accepted Answer

A) True 
 B)False

Question 11

The cell wall of bacteria

Accepted Answer

A)  helps prevent the cell from bursting. 
B)  protects the cell. 
C)  gives bacteria distinct shapes. 
D)  may contain a capsule. 
E)  All answers are correct. 
A)  helps prevent the cell from bursting. 
B)  protects the cell. 
C)  gives bacteria distinct shapes. 
D)  may contain a capsule. 
E)  All answers are correct.

Question 12

The scientist given credit for first using the term "cell" to describe the basic unit of life was

Accepted Answer

A)  Mathias Schleiden. 
B)  Robert Hooke. 
C)  Carl Woese. 
D)  Rudolf Virchow. 
E)  J. Craig Venter. 
A)  Mathias Schleiden. 
B)  Robert Hooke. 
C)  Carl Woese. 
D)  Rudolf Virchow. 
E)  J. Craig Venter.

Question 13

The original three components of the cell theory are that

Accepted Answer

A)  all organisms have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells. 
B)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. 
C)  all organisms have DNA, all organisms are made of cells, and all cells produce proteins. 
D)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus. 
E)  all organisms are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells. 
A)  all organisms have DNA, DNA is the fundamental unit of life, and all cells come from preexisting cells. 
B)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells come from preexisting cells. 
C)  all organisms have DNA, all organisms are made of cells, and all cells produce proteins. 
D)  all organisms are made of one or more cells, the cell is the fundamental unit of life, and all cells have a nucleus. 
E)  all organisms are made of one or more cells, all cells contain DNA, and all cells come from preexisting cells.

Question 14

Eukaryotic cells are 10-100 times larger than prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

Accepted Answer

A)  They have pumps that move gasses and nutrients through the cell. 
B)  Movement of materials is prevented in cells without a cell wall. 
C)  Organelles keep reactions compartmentalized and concentrated. 
D)  Gasses are taken up by active transport. 
E)  None of the biochemical reactions in prokaryotes occur in eukaryotes. 
A)  They have pumps that move gasses and nutrients through the cell. 
B)  Movement of materials is prevented in cells without a cell wall. 
C)  Organelles keep reactions compartmentalized and concentrated. 
D)  Gasses are taken up by active transport. 
E)  None of the biochemical reactions in prokaryotes occur in eukaryotes.

Question 15

What type of membrane protein is involved in passing ions and polar molecules across membranes?

Accepted Answer

A)  transport proteins 
B)  enzymes 
C)  recognition proteins 
D)  adhesion proteins 
E)  receptor proteins 
A)  transport proteins 
B)  enzymes 
C)  recognition proteins 
D)  adhesion proteins 
E)  receptor proteins

Question 16

All eukaryotic cells produce proteins.Proteins that will be secreted from the cell are made by ribosomes attached to the

Accepted Answer

A)  cell wall. 
B)  chloroplast. 
C)  rough endoplasmic reticulum. 
D)  mitochondrion. 
E)  Golgi apparatus. 
A)  cell wall. 
B)  chloroplast. 
C)  rough endoplasmic reticulum. 
D)  mitochondrion. 
E)  Golgi apparatus.

Question 17

What type of microscope would you use if you wanted to examine the movement of a freshwater protist?

Accepted Answer

A)  light microscope 
B)  transmission electron microscope 
C)  scanning electron microscope 
D)  light microscope and transmission electron microscope 
E)  transmission and scanning electron microscopes 
A)  light microscope 
B)  transmission electron microscope 
C)  scanning electron microscope 
D)  light microscope and transmission electron microscope 
E)  transmission and scanning electron microscopes

Question 18

What would be the reason for a scientist engineering a cell for a high surface area-to-volume ratio?

Accepted Answer

A)  To maximize the relative surface area to exchange nutrients, water, and waste. 
B)  To maximize the exchange of heat. 
C)  To provide more volume to store extra organelles. 
D)  To provide more volume to store nutrients. 
E)  All of the answer choices are correct. 
A)  To maximize the relative surface area to exchange nutrients, water, and waste. 
B)  To maximize the exchange of heat. 
C)  To provide more volume to store extra organelles. 
D)  To provide more volume to store nutrients. 
E)  All of the answer choices are correct.

Question 19

If you found a piece of animal tissue that did not allow fluid to cross between cells,you would predict that it contained tight junctions.

Accepted Answer

A) True 
 B)False

Question 20

Cells typically keep the surface to volume ratio high.If a cell was a cube and you doubled the height,width,and length of the cell,how much would the volume increase?

Accepted Answer

A)  2 times greater 
B)  8 times greater 
C)  It would stay the same. 
D)  9 times greater 
E)  4 times greater 
A)  2 times greater 
B)  8 times greater 
C)  It would stay the same. 
D)  9 times greater 
E)  4 times greater

Exam 3: Cells

Why are cells called "the fundamental unit of life"?

Some prokaryotes do have internal membranes,used in detecting gravity.

What type of membrane protein is involved in creating anchoring junctions between animal cells?

The cytoskeleton consists of microtubules,microfilaments,and intermediate filaments.

Which of the following do plants use to transport nutrients between adjacent cells?

Which of the following organelles would help you differentiate between plant and animal cells?

Which of the following roles is not performed by the rough endoplasmic reticulum nor the smooth endoplasmic reticulum?

The phospholipid bilayer of membranes allows lipids and small nonpolar molecules to pass across membranes,but prohibits the passage of ions and polar molecules.This occurs because the phospholipid tails are

Chloroplasts are known for all of the following except being

Scientists have discovered a few prokaryotic cells do have internal membranes.

The cell wall of bacteria

The scientist given credit for first using the term "cell" to describe the basic unit of life was

The original three components of the cell theory are that

Eukaryotic cells are 10-100 times larger than prokaryotic cells.How do eukaryotic cells resolve the surface area to volume limitations that favor smaller cells?

What type of membrane protein is involved in passing ions and polar molecules across membranes?

All eukaryotic cells produce proteins.Proteins that will be secreted from the cell are made by ribosomes attached to the

What type of microscope would you use if you wanted to examine the movement of a freshwater protist?

What would be the reason for a scientist engineering a cell for a high surface area-to-volume ratio?

If you found a piece of animal tissue that did not allow fluid to cross between cells,you would predict that it contained tight junctions.

Cells typically keep the surface to volume ratio high.If a cell was a cube and you doubled the height,width,and length of the cell,how much would the volume increase?

The Scientific Study of Life

The Chemistry of Life

The Energy of Life

Photosynthesis

Respiration and Fermentation

DNA Structure and Gene Function

DNA Replication,Binary Fission,and Mitosis

Sexual Reproduction and Meiosis

Patterns of Inheritance

DNA Technology

Forces of Evolutionary Change

Evidence of Evolution

Speciation and Extinction

Evolution and Diversity of Microbial Life

Evolution and Diversity of Plants

Evolution and Diversity of Animals

Populations

Communities and Ecosystems

Preserving Biodiversity

Plant Form and Function

Reproduction and Development of Flowering Plants

Animal Tissues and Organ Systems

The Nervous System and the Senses

The Endocrine System

The Skeletal and Muscular Systems

The Circulatory and Respiratory Systems

The Digestive and Urinary Systems

The Immune System

Animal Reproduction and Development

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