Question 1

______________ is a specific type of endocytosis that is responsible for bringing liquids and small particles into cells inside of small vesicles.

Accepted Answer

A)  Phagocytosis
B)  Pinocytosis
C)  Receptor mediated endocytosis
D)  ExocytosisE) C) and D)
F) A) and D)

Question 2

The nucleotide that is synthesized in the nucleus from a DNA template is

Accepted Answer

A)  tRNA.
B)  mRNA.
C)  rRNA.
D)  All of these are correct.E) C) and D)
F) None of the above

Question 3

Translation

Accepted Answer

A)  requires three types of DNA.
B)  requires the pairing of codons on tRNA with anticodons on mRNA.
C)  involves copying RNA from DNA molecules.
D)  involves formation of peptide bonds between adjacent amino acids.
E)  All of these are true of translation.F) B) and D)
G) D) and E)

Question 4

A red blood cell placed in distilled water would be expected to

Accepted Answer

A)  swell and lyse.
B)  shrink and lyse.
C)  swell and crenate.
D)  shrink and crenate.E) B) and C)
F) None of the above

Question 5

Which of these cells would most likely have the largest number of mitochondria?

Accepted Answer

A)  bone cells
B)  muscle cells
C)  fat cells
D)  blood cells
E)  skin cellsF) D) and E)
G) A) and D)

Question 6

The process called diffusion

Accepted Answer

A)  is the tendency for solute molecules to move from an area of high concentration to an area of low concentration.
B)  is the product of random movement of all atoms,molecules,and ions in a solution.
C)  always produces net movement of materials against the concentration gradient for that material.
D)  is both the tendency for solute molecules to move from an area of high concentration to an area of low concentration and is the product of random movement of all atoms,molecules,and ions in a solution are correct.
E)  is both the tendency for solute molecules to move from an area of high concentration to an area of low concentration and always produces net movement of materials against the concentration gradient for that material.F) B) and E)
G) D) and E)

Question 7

____________ are a component of the cytoskeleton that help to provide support,assist in cell division and help to form cilia.

Accepted Answer

A)  Microtubules
B)  Microfilaments
C)  Intermediate filaments
D)  Centrosomes
E)  All of these choices are acceptable.F) C) and D)
G) All of the above

Question 8

The sperm cell is able to move (is motile) because of its

Accepted Answer

A)  numerous cilia.
B)  microvilli.
C)  flagellum.
D)  numerous lysosomes.
E)  active transport mechanism.F) B) and E)
G) A) and E)

Question 9

In humans

Accepted Answer

A)  the diploid number of chromosomes is 46.
B)  each body cell has 23 chromosomes.
C)  each body cell has 2 pairs of sex chromosomes.
D)  a male has two X chromosomes in each body cell.
E)  each body cell has 46 autosomes.F) C) and D)
G) A) and E)

Question 10

Differentiation occurs when

Accepted Answer

A)  DNA is lost during mitosis.
B)  cytoplasm is lost during mitosis.
C)  RNA takes over function of the cell from DNA.
D)  some portions of DNA become (or remain) active,while other portions become (or remain) inactive.
E)  DNA is lost during mitosis and RNA takes over function of the cell from DNA.F) None of the above
G) C) and E)

Question 11

Substances transported across the plasma membrane by carrier molecules

Accepted Answer

A)  are said to be transported by carrier-mediated processes.
B)  include glucose and amino acid molecules.
C)  are each transported by a specific type of carrier molecule.
D)  include larger molecules that are not lipid-soluble.
E)  All of these are correct.F) B) and D)
G) C) and E)

Question 12

In _____________ molecules show a net movement from greater to lesser concentration due to the random motion of the molecules.

Accepted Answer

A)  simple diffusion
B)  exocytosis
C)  facilitated diffusion
D)  active transport
E)  endocytosisF) None of the above
G) C) and D)

Question 13

A selective poison that blocked the function of the mitochondria was used on a group of cells.Which of the following processes would most likely be interrupted by the presence of this poison?

Accepted Answer

A)  diffusion
B)  osmosis
C)  facilitated diffusion
D)  active transport
E)  filtrationF) A) and B)
G) C) and D)

Question 14

The nucleotide that is required for protein synthesis is

Accepted Answer

A)  tRNA.
B)  mRNA.
C)  rRNA.
D)  All of these are correct.E) All of the above
F) A) and D)

Question 15

A dialysis membrane is selectively permeable,and substances smaller than proteins are able to pass through.The dialysis machine allows blood to flow past one side of the dialysis membrane and the dialysis fluid flows on the other side of the membrane.If you wanted to use a dialysis machine to remove only urea (a small molecule) from blood,what could you use for the dialysis fluid?

Accepted Answer

A)  a solution that is isotonic and contains only protein
B)  a solution that is isotonic and contains the same concentration of substances as blood,except for having no urea in it
C)  distilled water
D)  whole blood
E)  hypertonic salt waterF) All of the above
G) A) and E)

Question 16

Which of the following are thought to cause aging?

Accepted Answer

A)  Death genes are turned on later in life causing cells to deteriorate.
B)  Free radicals damage the DNA of a cell past the point where successful accurate replication can occur.
C)  Mitochondrial DNA damage results in the loss of proteins and therefore energy production ability.
D)  After a certain number of cell divisions,a cell line is pre-programmed to stop dividing and dies.
E)  All of these are theories on why we age.F) A) and E)
G) C) and E)

Question 17

Which of the following phases is NOT correctly matched with its description?

Accepted Answer

A)  metaphase - chromosomes align along the center of the cell
B)  interphase - period between active cell division
C)  telophase - chromosomes begin to unravel and resemble the genetic material during interphase
D)  prophase - chromosomes move toward the poles of the cell
E)  anaphase - centromeres and chromatids separateF) C) and E)
G) None of the above

Question 18

The usual means for getting very large molecules,like whole proteins,across the cell membrane is by

Accepted Answer

A)  simple diffusion.
B)  passive transport.
C)  facilitated diffusion.
D)  active transport.
E)  endocytosis.F) A) and E)
G) B) and E)

Question 19

This diagram best shows a cell during _________ of mitosis.

Accepted Answer

A)  anaphase
B)  metaphase
C)  prophase
D)  telophaseE) B) and C)
F) A) and D)

Question 20

Which of the following statements concerning facilitated diffusion is correct?

Accepted Answer

A)  Facilitated diffusion involves the use of ATP.
B)  Facilitated diffusion involves carrier molecules in the plasma membrane.
C)  Facilitated diffusion is used to exchange one substance for another.
D)  Facilitated diffusion is one specific type of endocytosis.
E)  Facilitated diffusion occurs during filtration.F) A) and E)
G) None of the above

Exam 3: Cell Structures and Their Functions

Translation

Correct Answer
verified

A red blood cell placed in distilled water would be expected to

Correct Answer
verified

This diagram best shows a cell during _________ of mitosis.

Correct Answer
verified

A selective poison that blocked the function of the mitochondria was used on a group of cells.Which of the following processes would most likely be interrupted by the presence of this poison?

Correct Answer
verified

The process called diffusion

Correct Answer
verified

______________ is a specific type of endocytosis that is responsible for bringing liquids and small particles into cells inside of small vesicles.

Correct Answer
verified

Which of the following phases is NOT correctly matched with its description?

Correct Answer
verified

Substances transported across the plasma membrane by carrier molecules

Correct Answer
verified

The nucleotide that is required for protein synthesis is

Correct Answer
verified

Which of the following are thought to cause aging?

Correct Answer
verified

The nucleotide that is synthesized in the nucleus from a DNA template is

Correct Answer
verified

The usual means for getting very large molecules,like whole proteins,across the cell membrane is by

Correct Answer
verified

____________ are a component of the cytoskeleton that help to provide support,assist in cell division and help to form cilia.

Correct Answer
verified

Differentiation occurs when

Correct Answer
verified

Which of the following statements concerning facilitated diffusion is correct?

Correct Answer
verified

Correct Answer
verified

In _____________ molecules show a net movement from greater to lesser concentration due to the random motion of the molecules.

Correct Answer
verified

In humans

Correct Answer
verified

Which of these cells would most likely have the largest number of mitochondria?

Correct Answer
verified

The sperm cell is able to move (is motile) because of its

Correct Answer
verified

Exam 3: Cell Structures and Their Functions

Translation

Correct AnswerverifiedShow Answer

A red blood cell placed in distilled water would be expected to

Correct AnswerverifiedShow Answer

This diagram best shows a cell during _________ of mitosis.

Correct AnswerverifiedShow Answer

A selective poison that blocked the function of the mitochondria was used on a group of cells.Which of the following processes would most likely be interrupted by the presence of this poison?

Correct AnswerverifiedShow Answer

The process called diffusion

Correct AnswerverifiedShow Answer

______________ is a specific type of endocytosis that is responsible for bringing liquids and small particles into cells inside of small vesicles.

Correct AnswerverifiedShow Answer

Which of the following phases is NOT correctly matched with its description?

Correct AnswerverifiedShow Answer

Substances transported across the plasma membrane by carrier molecules

Correct AnswerverifiedShow Answer

The nucleotide that is required for protein synthesis is

Correct AnswerverifiedShow Answer

Which of the following are thought to cause aging?

Correct AnswerverifiedShow Answer

The nucleotide that is synthesized in the nucleus from a DNA template is

Correct AnswerverifiedShow Answer

The usual means for getting very large molecules,like whole proteins,across the cell membrane is by

Correct AnswerverifiedShow Answer

____________ are a component of the cytoskeleton that help to provide support,assist in cell division and help to form cilia.

Correct AnswerverifiedShow Answer

Differentiation occurs when

Correct AnswerverifiedShow Answer

Which of the following statements concerning facilitated diffusion is correct?

Correct AnswerverifiedShow Answer

Correct AnswerverifiedShow Answer

In _____________ molecules show a net movement from greater to lesser concentration due to the random motion of the molecules.

Correct AnswerverifiedShow Answer

In humans

Correct AnswerverifiedShow Answer

Which of these cells would most likely have the largest number of mitochondria?

Correct AnswerverifiedShow Answer

The sperm cell is able to move (is motile) because of its

Correct AnswerverifiedShow Answer

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified

Correct Answer
verified