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Micro Chapter 4 And 10
Test Description: Chapter 4
Instructions: Answer all questions to get your test result.
1) Fimbriae and pili differ in that
A
None of these is correct
B
pili are used for attachment to surfaces.
C
pili are used for transfer of DNA and motility.
D
here are only one or two pili per cell.
2) Where are phospholipids most likely found in a prokaryotic cell?
A
All of these
B
the plasma membrane
C
ribosomes
D
flagella
3) Which of the following statements is correct about passive diffusion?
A
It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentr
B
It requires an expenditure of energy by the cell.
C
It involves movement of molecules down a concentration gradient and may require a transport protein.
4) Which of the following statements about prokaryotic cells is generally false?
A
They reproduce by binary fission.
B
They possess 80S ribosomes.
C
They can be motile by means of flagella.
D
They can have a semi-rigid cell wall.
5) Which organelle is incorrectly matched?
A
All of these are true
B
Lysosome – intracellular digestion
C
Golgi body – process and package proteins and lipids
D
Rough endoplasmic reticulum – synthesizes and folds proteins
6) If you placed a bacteria in a high osmotic pressured solution or a hypertonic solution, what would happen to the cell?
A
Unable to answer, because more information is needed
B
Nothing
C
Swells
D
Shrinks
7) What would you describe an organism with one flagella?
A
Lophotrichious
B
Amphitrichious
C
Peritrichious
D
Monotrichious
8) 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
9) The glycocalyx surrounds the entire organism that helps to protect the bacteria from phagocytosis and other environmental stresses.
A
False
B
True
10) What are some differences between Gram + and Gram – organisms?
A
Gram + contains teichoic acids that can act as its antigenic property
B
All of these are differences
C
Gram – contains an extra outer membrane composed of lipopolysaccharides and lipoproteins
D
Gram + contains a large cell wall, whereas Gram – contains a small peptidoglycan layer
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