Question 1

During which stage of the cell cycle does a cell grow to approximately double its original size?

Accepted Answer

A) gap 1 
B) gap 2 
C) synthesis 
D) mitosis 
A) gap 1 
B) gap 2 
C) synthesis 
D) mitosis

Question 2

During which stage of the cell cycle does a cell divide?

Accepted Answer

A) gap 1 
B) gap 2 
C) synthesis 
D) mitosis and cytokinesis 
A) gap 1 
B) gap 2 
C) synthesis 
D) mitosis and cytokinesis

Question 3

New nuclear membranes form around each set of chromosomes during

Accepted Answer

A) prophase. 
B) metaphase. 
C) anaphase. 
D) telophase. 
A) prophase. 
B) metaphase. 
C) anaphase. 
D) telophase.

Question 4

Gap junctions

Accepted Answer

A) are slender threads of cytoplasm that link adjacent plant cells. 
B) require a lock-and-key fit between a receptor and a message molecule. 
C) are found in both animal cells and plant cells. 
D) are tiny channels between adjacent animal cells. 
A) are slender threads of cytoplasm that link adjacent plant cells. 
B) require a lock-and-key fit between a receptor and a message molecule. 
C) are found in both animal cells and plant cells. 
D) are tiny channels between adjacent animal cells.

Question 5

What form of transport across the cell membrane does not require energy from the cell, but does require a transport protein?

Accepted Answer

A) diffusion 
B) facilitated diffusion 
C) active transport 
D) endocytosis 
A) diffusion 
B) facilitated diffusion 
C) active transport 
D) endocytosis

Question 6

What does it mean that living things are part of populations that evolve? Provide an example of evolution.

Accepted Answer

Populations do not remain constant from

Question 7

Which of the following is not a component of the cell membrane?

Accepted Answer

A) phospholipids 
B) proteins 
C) carbohydrates 
D) RNA 
A) phospholipids 
B) proteins 
C) carbohydrates 
D) RNA

Question 8

Enzymes are

Accepted Answer

A) catalysts. 
B) proteins. 
C) substrates. 
D) both A and B 
A) catalysts. 
B) proteins. 
C) substrates. 
D) both A and B

Question 9

In the process of osmosis,

Accepted Answer

A) water diffuses from an area with a high concentration of water molecules to an area with a low concentration of water molecules. 
B) water moves from an area of lower solute concentration to an area of higher solute concentration. 
C) water moves into cells. 
D) both A and B 
A) water diffuses from an area with a high concentration of water molecules to an area with a low concentration of water molecules. 
B) water moves from an area of lower solute concentration to an area of higher solute concentration. 
C) water moves into cells. 
D) both A and B

Question 10

All of the following are eukaryotes except

Accepted Answer

A) Escherichia coli, an occupant of the human digestive tract. 
B) baker's yeast. 
C) humans. 
D) maple trees. 
A) Escherichia coli, an occupant of the human digestive tract. 
B) baker's yeast. 
C) humans. 
D) maple trees.

Question 11

Phospholipids

Accepted Answer

A) are entirely hydrophobic. 
B) are entirely hydrophilic. 
C) are either hydrophobic or hydrophilic depending on where in a cell membrane they are found. 
D) have a hydrophobic portion as well as a hydrophilic portion. 
A) are entirely hydrophobic. 
B) are entirely hydrophilic. 
C) are either hydrophobic or hydrophilic depending on where in a cell membrane they are found. 
D) have a hydrophobic portion as well as a hydrophilic portion.

Question 12

In plant cells, the organelles where photosynthesis takes place are

Accepted Answer

A) mitochondria. 
B) ribosomes. 
C) chloroplasts. 
D) lysosomes. 
A) mitochondria. 
B) ribosomes. 
C) chloroplasts. 
D) lysosomes.

Question 13

Cells obtain energy from ATP

Accepted Answer

A) when ADP is converted to ATP. 
B) during cellular respiration. 
C) when the sodium-potassium pump moves potassium ions into cells. 
D) when one of ATP's phosphate groups is removed, leaving ADP. 
A) when ADP is converted to ATP. 
B) during cellular respiration. 
C) when the sodium-potassium pump moves potassium ions into cells. 
D) when one of ATP's phosphate groups is removed, leaving ADP.

Question 14

Nucleic acids

Accepted Answer

A) act as hormones that allow cells to communicate with one another. 
B) consist of folded strings of amino acids. 
C) store energy in living organisms. 
D) store genetic information in living organisms. 
A) act as hormones that allow cells to communicate with one another. 
B) consist of folded strings of amino acids. 
C) store energy in living organisms. 
D) store genetic information in living organisms.

Question 15

During glycolysis,

Accepted Answer

A) electrons are sent down an electron transport chain. 
B) sugar is split, and ATP is generated. 
C) oxygen is required. 
D) water is generated. 
A) electrons are sent down an electron transport chain. 
B) sugar is split, and ATP is generated. 
C) oxygen is required. 
D) water is generated.

Question 16

During which phase of mitosis are a cell's chromosomes lined up at the equatorial plane?

Accepted Answer

A) prophase 
B) metaphase 
C) anaphase 
D) telophase 
A) prophase 
B) metaphase 
C) anaphase 
D) telophase

Question 17

Explain the difference between diffusion and facilitated diffusion.

Accepted Answer

Both diffusion and facilitated diffusion

Exam 15: The Basic Unit of Life-The Cell

During which stage of the cell cycle does a cell grow to approximately double its original size?

During which stage of the cell cycle does a cell divide?

New nuclear membranes form around each set of chromosomes during

Gap junctions

What form of transport across the cell membrane does not require energy from the cell, but does require a transport protein?

What does it mean that living things are part of populations that evolve? Provide an example of evolution.

Which of the following is not a component of the cell membrane?

Enzymes are

In the process of osmosis,

All of the following are eukaryotes except

Phospholipids

In plant cells, the organelles where photosynthesis takes place are

Cells obtain energy from ATP

Nucleic acids

During glycolysis,

During which phase of mitosis are a cell's chromosomes lined up at the equatorial plane?

Explain the difference between diffusion and facilitated diffusion.

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