Micro Chapter 4 And 10 Question Preview (ID: 61842)
Chapter 4.
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Which of the following statements about prokaryotic cells is generally false?
a) They can have a semi-rigid cell wall.
b) They can be motile by means of flagella.
c) They possess 80S ribosomes.
d) They reproduce by binary fission.
Where are phospholipids most likely found in a prokaryotic cell?
a) flagella
b) ribosomes
c) All of these
d) the plasma membrane
Which of the following statements is correct about passive diffusion?
a) It involves movement of molecules down a concentration gradient and may require a transport protein.
b) It requires an expenditure of energy by the cell.
c) It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentr
d)
Fimbriae and pili differ in that
a) pili are used for attachment to surfaces.
b) pili are used for transfer of DNA and motility.
c) here are only one or two pili per cell.
d) None of these is correct
Which organelle is incorrectly matched?
a) Golgi body – process and package proteins and lipids
b) Lysosome – intracellular digestion
c) Rough endoplasmic reticulum – synthesizes and folds proteins
d) All of these are true
If you placed a bacteria in a high osmotic pressured solution or a hypertonic solution, what would happen to the cell?
a) Swells
b) Shrinks
c) Nothing
d) Unable to answer, because more information is needed
What would you describe an organism with one flagella?
a) Monotrichious
b) Peritrichious
c) Lophotrichious
d) Amphitrichious
What is true concerning sporogenesis?
a) Occurs when nutrients are low
b) Occurs during harsh conditions
c) The endospore will contain genetic information, membrane, cell wall, and a spore coat
d) All of these
The glycocalyx surrounds the entire organism that helps to protect the bacteria from phagocytosis and other environmental stresses.
a) True
b) False
c)
d)
What are some differences between Gram + and Gram – organisms?
a) Gram + contains a large cell wall, whereas Gram – contains a small peptidoglycan layer
b) Gram – contains an extra outer membrane composed of lipopolysaccharides and lipoproteins
c) Gram + contains teichoic acids that can act as its antigenic property
d) All of these are differences
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