Question 1

The electron microscope can magnify an object typically

Accepted Answer

A)  ten times bigger.
B)  one hundred times bigger.
C)  one thousand times bigger.
D)  tens of thousand times bigger.
E)  hundreds of thousand times bigger.F) A) and C)
G) C) and D)

Question 2

Flattened sacks of membranes apparently involved in the packaging and export of molecules synthesized in the cell are known as

Accepted Answer

A)  Golgi bodies.
B)  microbodies.
C)  pinocytic vesicles.
D)  vacuoles.
E)  chromosomes.F) A) and D)
G) B) and D)

Question 3

The chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryotic cells.This organelle is

Accepted Answer

A)  mitochondriA.
B)  chloroplasts.
C)  plasma membrane.
D)  nucleus.
E)  centrioles.F) A) and C)
G) B) and E)

Question 4

Membrane-bound organelles that contain powerful enzymes found in cells are known as

Accepted Answer

A)  lysosomes.
B)  plastids.
C)  vacuoles.
D)  liposomes.
E)  ribosomes.F) D) and E)
G) A) and C)

Question 5

Chromosomes can be condensed into compact structures,visible with the light microscope,but usually only

Accepted Answer

A)  after the cell is dead.
B)  during cell division.
C)  while the DNA is being copied into RNA.
D)  while the proteins are being assembleD.
E)  while the nuclear pores are open.F) B) and E)
G) A) and E)

Question 6

A distinctive feature of eukaryotes is the organization of their chromosomal DNA which is tightly packaged with proteins into a membrane-bound structure called a _______.

Accepted Answer

A)  nucleolus
B)  cell
C)  nucleus
D)  plasma membraneE) A) and D)
F) A) and C)

Question 7

All _____ contain a plasma membrane.

Accepted Answer

A)  animal cells
B)  plants cells
C)  nuclei
D)  cellsE) C) and D)
F) None of the above

Question 8

A mutation in an integrin protein would likely affect all of the following except

Accepted Answer

A)  communication between the ECM and cytoskeleton.
B)  cell-cell adhesion.
C)  fibronectin binding.
D)  communication between the nucleus and cytoskeleton.E) B) and D)
F) B) and C)

Question 9

Lysosomes are vesicles bounded by membranes that contain oxidative enzymes.Their functions include all of the following except they

Accepted Answer

A)  catalyze the rapid breakdown of macromolecules.
B)  break down old organelles.
C)  eliminate substances taken into the cell by phagocytosis.
D)  digest phagocytized pathogens.
E)  allow bacteria to pass through unaffected.F) A) and B)
G) A) and C)

Question 10

In eukaryotes,mitochondria are the organelles primarily involved in

Accepted Answer

A)  energy release/capture.
B)  phospholipid assembly.
C)  export of enzymes.
D)  lipid synthesis.
E)  protein synthesis.F) None of the above
G) C) and D)

Question 11

Plant cells often have a large membrane-bound sac that is used for storing water and other substances.This organelle is called a

Accepted Answer

A)  nucleus.
B)  chloroplast.
C)  Golgi body.
D)  centriole.
E)  central vacuolE.F) A) and D)
G) A) and E)

Question 12

Photosynthetic bacterial membranes are located in the

Accepted Answer

A)  nuclei.
B)  chloroplasts.
C)  cell wall.
D)  plasma membrane.
E)  plasmids.F) None of the above
G) D) and E)

Question 13

Small cells function more effectively,because as cells become larger their surface area to volume ratio

Accepted Answer

A)  increases.
B)  decreases.
C)  stays the same.
D)  is squareD.
E)  is cubed.F) A) and E)
G) A) and C)

Question 14

Plants,fungi,and bacteria share which one of the following characteristics?

Accepted Answer

A)  cell walls
B)  nuclear membranes
C)  nuclei
D)  lysosomes
E)  vesiclesF) A) and B)
G) D) and E)

Question 15

Peroxisomes in animal cells,and glyoxosomes in plant cells are examples of

Accepted Answer

A)  chromosomes.
B)  lysosomes.
C)  microbodies.
D)  nucleosomes.
E)  ribosomes.F) All of the above
G) A) and E)

Question 16

Mitochondria and chloroplasts are the other organelles besides the nucleus that contain

Accepted Answer

A)  DNA.
B)  pores.
C)  channels.
D)  plasma membranes.
E)  pigments.F) B) and E)
G) A) and D)

Question 17

You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins.Knowing that palmitoylated proteins are usually targeted to the plasma membrane,in which organelles might this enzyme be expressed?

Accepted Answer

A)  Golgi apparatus and ER
B)  Golgi apparatus and nucleus
C)  ER and ribosomes
D)  ER and nucleusE) B) and D)
F) B) and C)

Question 18

One of the relationships that exists between ribosomes and lysosomes is that

Accepted Answer

A)  ribosomes produce enzymes that could be stored in lysosomes.
B)  ribosomes produce lipids that could be stored in lysosomes.
C)  lysosomes are located near ribosomes on the surface of the endoplasmic reticulum.
D)  lysosomes are produced by ribosomes and therefore contain proteins that were synthesized at the ribosomes.E) All of the above
F) A) and B)

Question 19

Who first described cells?

Accepted Answer

A)  Darwin
B)  Golgi
C)  Linnaeus
D)  Hooke
E)  LeeuwenhoekF) B) and D)
G) B) and C)

Question 20

The delivery system of eukaryotic cells called the ______ can collect,package,modify,and transport molecules.

Accepted Answer

A)  mitochondria
B)  plasma membrane
C)  vesicle
D)  Golgi apparatusE) A) and D)
F) B) and C)

Exam 4: Cell Structure

You have identified an enzyme that appears to be involved in the addition of palmityl group (a fatty acid) to certain proteins.Knowing that palmitoylated proteins are usually targeted to the plasma membrane,in which organelles might this enzyme be expressed?

Correct AnswerverifiedShow Answer

All _____ contain a plasma membrane.

Correct AnswerverifiedShow Answer

Who first described cells?

Correct AnswerverifiedShow Answer

Chromosomes can be condensed into compact structures,visible with the light microscope,but usually only

Correct AnswerverifiedShow Answer

The electron microscope can magnify an object typically

Correct AnswerverifiedShow Answer

The chromosomal hereditary material is packaged in this organelle in eukaryotic cells but not in prokaryotic cells.This organelle is

Correct AnswerverifiedShow Answer

Membrane-bound organelles that contain powerful enzymes found in cells are known as

Correct AnswerverifiedShow Answer

Mitochondria and chloroplasts are the other organelles besides the nucleus that contain

Correct AnswerverifiedShow Answer

Flattened sacks of membranes apparently involved in the packaging and export of molecules synthesized in the cell are known as

Correct AnswerverifiedShow Answer

Photosynthetic bacterial membranes are located in the

Correct AnswerverifiedShow Answer

In eukaryotes,mitochondria are the organelles primarily involved in

Correct AnswerverifiedShow Answer

Plants,fungi,and bacteria share which one of the following characteristics?

Correct AnswerverifiedShow Answer

One of the relationships that exists between ribosomes and lysosomes is that

Correct AnswerverifiedShow Answer

Peroxisomes in animal cells,and glyoxosomes in plant cells are examples of

Correct AnswerverifiedShow Answer

Plant cells often have a large membrane-bound sac that is used for storing water and other substances.This organelle is called a

Correct AnswerverifiedShow Answer

A mutation in an integrin protein would likely affect all of the following except

Correct AnswerverifiedShow Answer

A distinctive feature of eukaryotes is the organization of their chromosomal DNA which is tightly packaged with proteins into a membrane-bound structure called a _______.

Correct AnswerverifiedShow Answer

The delivery system of eukaryotic cells called the ______ can collect,package,modify,and transport molecules.

Correct AnswerverifiedShow Answer

Small cells function more effectively,because as cells become larger their surface area to volume ratio

Correct AnswerverifiedShow Answer

Lysosomes are vesicles bounded by membranes that contain oxidative enzymes.Their functions include all of the following except they

Correct AnswerverifiedShow Answer

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