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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
pili are used for attachment to surfaces.
B
pili are used for transfer of DNA and motility.
C
None of these is correct
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
flagella
C
the plasma membrane
D
ribosomes
3) Which of the following statements is correct about passive diffusion?
A
It requires an expenditure of energy by the cell.
B
It is a process in which molecules move from a region of lower concentration to one of higher concentration (or up a concentr
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 can be motile by means of flagella.
B
They possess 80S ribosomes.
C
They reproduce by binary fission.
D
They can have a semi-rigid cell wall.
5) Which organelle is incorrectly matched?
A
All of these are true
B
Rough endoplasmic reticulum – synthesizes and folds proteins
C
Lysosome – intracellular digestion
D
Golgi body – process and package proteins and lipids
6) 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
Unable to answer, because more information is needed
D
Nothing
7) What would you describe an organism with one flagella?
A
Amphitrichious
B
Monotrichious
C
Lophotrichious
D
Peritrichious
8) What is true concerning sporogenesis?
A
All of these
B
Occurs when nutrients are low
C
The endospore will contain genetic information, membrane, cell wall, and a spore coat
D
Occurs during harsh conditions
9) The glycocalyx surrounds the entire organism that helps to protect the bacteria from phagocytosis and other environmental stresses.
A
True
B
False
10) What are some differences between Gram + and Gram – organisms?
A
Gram + contains teichoic acids that can act as its antigenic property
B
Gram – contains an extra outer membrane composed of lipopolysaccharides and lipoproteins
C
Gram + contains a large cell wall, whereas Gram – contains a small peptidoglycan layer
D
All of these are differences
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