Question 1

Inclusions found in bacteria generally would not include

Accepted Answer

A)   granules
B)   volutin
C)   metachromatic granules
D)   ribosomesE) B) and D)
F) C) and D)

Question 2

During diffusion,molecules

Accepted Answer

A)   move from hotter areas to cooler areas
B)   move from areas of higher concentration to areas of lower concentration
C)   move from areas of lower concentration to areas of higher concentration
D)   expend energy to move aroundE) B) and D)
F) C) and D)

Question 3

Extrachromosomal DNA in prokaryotic cells can be found in the form of

Accepted Answer

A)   chromosomes
B)   plasmids
C)   mitochondria
D)   chloroplastsE) B) and C)
F) None of the above

Question 4

Three bags,permeable to water but not salt,are placed in beakers containing an isotonic,hypotonic and hypertonic solution. Describe how you could determine which beaker was which. If the bag were a cell what would happen to it if it was placed in each beaker.

Accepted Answer

The concentration of the dissolved mater...

Question 5

An organic molecule which moves down its concentration gradient and across a pore in a cell membrane without energy being expended by the cell is experiencing

Accepted Answer

A)   simple diffusion
B)   osmosis
C)   active transport
D)   facilitated diffusionE) None of the above
F) A) and C)

Question 6

Osmosis most directly involves

Accepted Answer

A)   water moving down a concentration gradient
B)   organic molecules crossing a membrane
C)   energy being expended to import large molecules into the cell
D)   sugars and salts moving down their concentration gradientE) All of the above
F) C) and D) A

Question 7

Lysozyme,found in human tears,controls the growth of bacteria by

Accepted Answer

A)   fusing with vacuoles
B)   containing multiple kinds of digestive enzymes
C)   digesting peptidoglycan
D)   preventing peptidoglycan synthesisE) All of the above
F) None of the above

Question 8

The rough endoplasmic reticulum appears rough because of

Accepted Answer

A)   sterols in its membrane
B)   fats and sugars on its surface
C)   multiple ribosomes on its surface
D)   proteins in the lumen of the ERE) None of the above
F) A) and B)

Question 9

Attachment pili do all of the following except,

Accepted Answer

A)   help bacteria adhere to surfaces
B)   allow bacteria to form a pellicle at the air-water interface of a broth culture
C)   clump blood cells in a process called hemagglutination
D)   prevent the pathogenicity of certain bacteriaE) B) and C)
F) A) and D)

Question 10

Genetic information in bacteria

Accepted Answer

A)   is found in the nucleus
B)   is found only in RNA
C)   is found in chromatin (ie DNA condensed by histones) 
D)   is sometimes found in the form of plasmidsE) C) and D)
F) B) and C)

Question 11

The shape of a bacterial cell is determined (and maintained) by the

Accepted Answer

A)   cell membrane
B)   cell wall
C)   capsule
D)   slime layerE) A) and B)
F) All of the above

Question 12

Bacteria move by means of

Accepted Answer

A)   cilia
B)   flagella
C)   whipping back and forth
D)   piliE) None of the above
F) B) and C)

Question 13

The cytoskeleton consists of

Accepted Answer

A)   microfilaments and sterols
B)   microtubules and proteins
C)   microfilaments and microtubules
D)   sterols and proteinsE) None of the above
F) A) and D)

Question 14

Which of the following statements about a prokaryotic cell's surface-to-volume ratio is false?

Accepted Answer

A)   because of their small size, bacteria have a small surface-to-volume ratio
B)   eukaryotes have a surface-to-volume ratio that is only 1/10 that of prokaryotes
C)   the prokaryote's surface-to-volume ratio means that nutrients can easily and quickly reach all parts of the cell as no internal part of the cell is very far from the surface.
D)   a bacteria with a surface area of about 12 microns squared and a volume of 4 cubic microns has a surface-to-volume ratio of 3:1E) All of the above
F) A) and C)

Question 15

What supports the idea that prokaryotes were involved in the evolution of eukaryotes by means of endosymbiosis?

Accepted Answer

Evidence supporting the idea that prokar...

Question 16

The periplasmic space

Accepted Answer

A)   is found only in Gram positive organisms
B)   is found between the nuclear area and the cell membrane
C)   is found primarily in acid fast bacteria
D)   is found between the cell membrane and cell wallE) A) and C)
F) All of the above

Question 17

Which of the following is true about bacteria?

Accepted Answer

A)   all bacteria cells are smaller than 100 micrometers in diameter
B)   the cell wall controls the movement of small molecules into and out of the cell
C)   gram negative bacteria become protoplasts when their cell wall is digested away
D)   bacterial endospores are reproductive structuresE) A) and C)
F) A) and B)

Question 18

The outer (cell) membrane component of the cell wall

Accepted Answer

A)   is found only in Gram positive bacteria
B)   is made primarily of peptidoglycan
C)   contains lipopolysaccharrides
D)   is primarily a reproductive structureE) All of the above
F) A) and B) C

Question 19

Eukaryotic cells add rigidity to their plasma membrane by including what component in the membrane

Accepted Answer

A)   protein
B)   lipids
C)   sugars
D)   sterolsE) A) and B)
F) A) and C) D

Question 20

The most important component of bacterial cell walls is

Accepted Answer

A)   teicoic acid
B)   lipotechoic acid
C)   peptidoglycan
D)   glutamic acidE) C) and D)
F) A) and B)

Exam 4: Characteristics of Prokaryotic and Eukaryotic Cells

Inclusions found in bacteria generally would not include

Correct AnswerverifiedShow Answer

During diffusion,molecules

Correct AnswerverifiedShow Answer

Extrachromosomal DNA in prokaryotic cells can be found in the form of

Correct AnswerverifiedShow Answer

Three bags,permeable to water but not salt,are placed in beakers containing an isotonic,hypotonic and hypertonic solution. Describe how you could determine which beaker was which. If the bag were a cell what would happen to it if it was placed in each beaker.

Correct AnswerverifiedThe concentration of the dissolved mater...View AnswerShow Answer

An organic molecule which moves down its concentration gradient and across a pore in a cell membrane without energy being expended by the cell is experiencing

Correct AnswerverifiedShow Answer

Osmosis most directly involves

Correct AnswerverifiedA

Lysozyme,found in human tears,controls the growth of bacteria by

Correct AnswerverifiedShow Answer

The rough endoplasmic reticulum appears rough because of

Correct AnswerverifiedShow Answer

Attachment pili do all of the following except,

Correct AnswerverifiedShow Answer

Genetic information in bacteria

Correct AnswerverifiedShow Answer

The shape of a bacterial cell is determined (and maintained) by the

Correct AnswerverifiedShow Answer

Bacteria move by means of

Correct AnswerverifiedShow Answer

The cytoskeleton consists of

Correct AnswerverifiedShow Answer

Which of the following statements about a prokaryotic cell's surface-to-volume ratio is false?

Correct AnswerverifiedShow Answer

What supports the idea that prokaryotes were involved in the evolution of eukaryotes by means of endosymbiosis?

Correct AnswerverifiedEvidence supporting the idea that prokar...View AnswerShow Answer

The periplasmic space

Correct AnswerverifiedShow Answer

Which of the following is true about bacteria?

Correct AnswerverifiedShow Answer

The outer (cell) membrane component of the cell wall

Correct AnswerverifiedC

Eukaryotic cells add rigidity to their plasma membrane by including what component in the membrane

Correct AnswerverifiedD

The most important component of bacterial cell walls is

Correct AnswerverifiedShow Answer

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The concentration of the dissolved mater...
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A

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Evidence supporting the idea that prokar...
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C

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D

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