Question 1

The boundary that surrounds the contents of the nucleus is the

Accepted Answer

A)  plasma membrane. 
B)  nuclear envelope. 
C)  nuclear pore. 
D)  cytosol. 
A)  plasma membrane. 
B)  nuclear envelope. 
C)  nuclear pore. 
D)  cytosol. B

Question 2

Which statement best describes the relationship between cell size (surface area,volume,and average width or radius)and cell function?

Accepted Answer

A)  Bigger cells have more surface area, more volume, more storage capacity, and are adaptively superior in many ways because of their greater size. 
B)  Spherical cells function best because they have a more favorable surface area : volume ratio, which explains why red blood cells and most bacteria are spherical. 
C)  The rate of increase of volume exceeds that of surface area, causing membrane transport of nutrients and waste to become progressively inefficient as cell size increases. 
D)  Since each feature is determined geometrically, the ratios for any two measurements and cell function capabilities remains constant regardless of overall cell size. 
A)  Bigger cells have more surface area, more volume, more storage capacity, and are adaptively superior in many ways because of their greater size. 
B)  Spherical cells function best because they have a more favorable surface area : volume ratio, which explains why red blood cells and most bacteria are spherical. 
C)  The rate of increase of volume exceeds that of surface area, causing membrane transport of nutrients and waste to become progressively inefficient as cell size increases. 
D)  Since each feature is determined geometrically, the ratios for any two measurements and cell function capabilities remains constant regardless of overall cell size. C

Question 3

The following figure shows a mitochondrion,emphasizing its inner and outer membranes.   The inner membrane of the mitochondria is thought to have evolved from

Accepted Answer

A)  a bit of plasma membrane from the early eukaryotic cell that engulfed a bacterium. 
B)  the membrane surrounding the lysosome that engulfed a bacterium, once it was inside an early eukaryotic cell. 
C)  the plasma membrane of a prokaryotic cell engulfed by an early eukaryotic cell. 
D)  infoldings of the plasma membrane of an early eukaryotic cell. 
A)  a bit of plasma membrane from the early eukaryotic cell that engulfed a bacterium. 
B)  the membrane surrounding the lysosome that engulfed a bacterium, once it was inside an early eukaryotic cell. 
C)  the plasma membrane of a prokaryotic cell engulfed by an early eukaryotic cell. 
D)  infoldings of the plasma membrane of an early eukaryotic cell. C

Question 4

The smooth endoplasmic reticulum

Accepted Answer

A)  is the site where lipids destined for other cellular compartments are manufactured. 
B)  produces the energy needed to run chemical reactions in the cell. 
C)  converts sunlight into chemical energy. 
D)  stores water, nutrients, and enzymes. 
A)  is the site where lipids destined for other cellular compartments are manufactured. 
B)  produces the energy needed to run chemical reactions in the cell. 
C)  converts sunlight into chemical energy. 
D)  stores water, nutrients, and enzymes.

Question 5

DNA from which listed organelle is inherited from a child's mother?

Accepted Answer

A)  the nucleus 
B)  mitochondria 
C)  chloroplasts 
D)  lysosomes 
A)  the nucleus 
B)  mitochondria 
C)  chloroplasts 
D)  lysosomes

Question 6

The movements of wound-healing fibroblasts in your body depend on pseudopodia that can extend and retract,because the microfilaments in them can rapidly change their length.

Accepted Answer

A) True 
 B)False

Question 7

DNA analysis supports the hypothesis that prokaryotes evolved from earlier eukaryotes through adaptive simplification-a process where unnecessary cellular structures are gradually lost.

Accepted Answer

A) True 
 B)False

Question 8

The ________ model describes the plasma membrane as a mobile mixture of phospholipids and proteins.

Accepted Answer

The answer of The ________ model describes the plasma membrane...

Question 9

Which of the following statements is true of chloroplasts?

Accepted Answer

A)  They produce proteins used by other parts of the cell. 
B)  They capture energy from sunlight. 
C)  They give an animal cell its shape. 
D)  They contain an entire copy of a cell's genetic material. 
A)  They produce proteins used by other parts of the cell. 
B)  They capture energy from sunlight. 
C)  They give an animal cell its shape. 
D)  They contain an entire copy of a cell's genetic material.

Question 10

A ribosome has internal cristae.

Accepted Answer

A) True 
 B)False

Question 11

The components of the cytoskeleton that provide mechanical strength to cells and reinforce the membranes of organelles are called ________.

Accepted Answer

intermedia

Question 12

Which of the following structures is found in all types of cells?

Accepted Answer

A)  chloroplasts 
B)  cilia 
C)  a cell wall 
D)  a plasma membrane 
A)  chloroplasts 
B)  cilia 
C)  a cell wall 
D)  a plasma membrane

Question 13

The sizes of several biological structures are indicated in the following figure.   Which of the following is the smallest structure you could see with a light microscope?

Accepted Answer

A)  viruses 
B)  frog egg 
C)  most bacteria 
D)  ribosomes 
A)  viruses 
B)  frog egg 
C)  most bacteria 
D)  ribosomes

Question 14

A screen door allows breezes to enter and aromas to exit,but keeps out insects.Its function most resembles

Accepted Answer

A)  the cytosol. 
B)  the plasma membrane. 
C)  the ER lumen. 
D)  a ribosome. 
A)  the cytosol. 
B)  the plasma membrane. 
C)  the ER lumen. 
D)  a ribosome.

Question 15

Certain cells found in humans are identical to certain cells found in plants.

Accepted Answer

A) True 
 B)False

Question 16

Which of the following works like a propeller?

Accepted Answer

A)  eukaryotic flagella 
B)  prokaryotic flagella 
C)  eukaryotic cilia 
D)  prokaryotic cilia 
A)  eukaryotic flagella 
B)  prokaryotic flagella 
C)  eukaryotic cilia 
D)  prokaryotic cilia

Question 17

The nucleolus is

Accepted Answer

A)  the region of the cell where chromosomes are found. 
B)  the name of the double layer of membranes that forms the boundary of the nucleus. 
C)  the region of the nucleus where ribosome production begins. 
D)  a piece of DNA wrapped around proteins. 
A)  the region of the cell where chromosomes are found. 
B)  the name of the double layer of membranes that forms the boundary of the nucleus. 
C)  the region of the nucleus where ribosome production begins. 
D)  a piece of DNA wrapped around proteins.

Question 18

Which of the following statements is FALSE?

Accepted Answer

A)  Eukaryotes use RNA as the hereditary genetic material. 
B)  Eukaryotes can be multicellular. 
C)  Eukaryotes have a membrane-enclosed nucleus. 
D)  Eukaryotes have membrane-enclosed organelles. 
A)  Eukaryotes use RNA as the hereditary genetic material. 
B)  Eukaryotes can be multicellular. 
C)  Eukaryotes have a membrane-enclosed nucleus. 
D)  Eukaryotes have membrane-enclosed organelles.

Question 19

A microscope is used to obtain a magnified view of an object.

Accepted Answer

A) True 
 B)False

Question 20

A membrane that is selectively permeable causes damage to the cell by allowing solutes to enter and leave the cell indiscriminately.

Accepted Answer

A) True 
 B)False

Exam 3: Cell Structure and Internal Compartments

The boundary that surrounds the contents of the nucleus is the

Which statement best describes the relationship between cell size (surface area,volume,and average width or radius)and cell function?

The following figure shows a mitochondrion,emphasizing its inner and outer membranes. The inner membrane of the mitochondria is thought to have evolved from

The smooth endoplasmic reticulum

DNA from which listed organelle is inherited from a child's mother?

The movements of wound-healing fibroblasts in your body depend on pseudopodia that can extend and retract,because the microfilaments in them can rapidly change their length.

DNA analysis supports the hypothesis that prokaryotes evolved from earlier eukaryotes through adaptive simplification-a process where unnecessary cellular structures are gradually lost.

The ________ model describes the plasma membrane as a mobile mixture of phospholipids and proteins.

Which of the following statements is true of chloroplasts?

A ribosome has internal cristae.

The components of the cytoskeleton that provide mechanical strength to cells and reinforce the membranes of organelles are called ________.

Which of the following structures is found in all types of cells?

The sizes of several biological structures are indicated in the following figure. Which of the following is the smallest structure you could see with a light microscope?

A screen door allows breezes to enter and aromas to exit,but keeps out insects.Its function most resembles

Certain cells found in humans are identical to certain cells found in plants.

Which of the following works like a propeller?

The nucleolus is

Which of the following statements is FALSE?

A microscope is used to obtain a magnified view of an object.

A membrane that is selectively permeable causes damage to the cell by allowing solutes to enter and leave the cell indiscriminately.

The Nature of Science and the Characteristics of Life

The Chemistry of Life

Cell Membranes, Transport, and Communication

Energy, Metabolism, and Enzymes

Photo Synthesis and Cellular Respiration

Cell Division

Cancer and Human Health

Patterns of Inheritance

Chromosomes and Human Genetics

DNA and Genes

From Gene to Protein

DNA Technology

How Evolution Works

The Origin of Species

The Evolution of Biodiversity

Biological Diversity, Bacteria, and Archaea

Protista, Plantae, and Fungi

Animalia

The Biosphere

Growth of Populations

Animal Behavior

Ecological Communities

Ecosystems

Global Change

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