which drawing in the figure is a tetrad?
11) Which drawing in Figure 4.1 is a tetrad?
11) ______
A) a
B) b
C) c
D) d
E) e
12) Which drawing in Figure 4.1 possesses an axial filament?
12) ______
A) a
B) b
C) c
D) d
E) e
13) Which drawing in Figure 4.1 is streptococci?
13) ______
A) a
B) b
C) c
D) d
E) e
14) Which drawing in Figure 4.1 is a bacillius?
14) ______
A) a
B) b
C) c
D) d
E) e
15) Which of the following statements about prokaryotic cells is generally false?
15) ______
A) They lack membrane-bound nuclei.
B) They have a semirigid cell wall.
C) They are motile by means of flagella.
D) They possess 80S ribosomes.
E) They reproduce by binary fission.
16) Which of the following statements about gram-negative cell walls is false?
16) ______
A) They are sensitive to penicillin.
B) Their Gram reaction is due to the outer membrane.
C) They have an extra outer layer composed of lipoproteins, lipopolysaccharides, and phospholipids.
D) They are toxic to humans.
E) They protect the cell in a hypotonic environment.
17) Which of the following structures is NOT found in prokaryotic cells?
17) ______
A) Pilus
B) Peritrichous flagella
C) Cilium
D) Axial filament
E) Flagellum
18) Which of the following statements about the glycocalyx is false?
18) ______
A) It may be composed of polysaccharide.
B) It is used to adhere to surfaces.
C) It may be composed of polypeptide.
D) It may be responsible for virulence.
E) It protects from osmotic lysis.
19) Which of the following is NOT a chemical component of a bacterial cell wall?
19) ______
A) Peptidoglycan
B) Peptide chains
C) Teichoic acids
D) Cellulose
E) N-acetylmuramic acid
20) Which of the following is NOT part of the active transport process?
20) ______
A) Plasma membrane
B) ATP
C) Cell wall
D) Transporter proteins
E) None of the above
which drawing in the figure is a tetrad?
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