Phage T4 gains release from the infected host cell like many other double-stranded DNA phages by interfering with the activity of enzymes that synthesize peptidoglycan.
Answer the following statement true (T) or false (F)
False
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Boyle’s law of gases helps explain the mechanics of breathing. What does Boyle’s law state?
a. For gases in a closed space, pressure and volume are positively correlated. b. The volume occupied by an ideal gas is directly proportional to the number of molecules present. c. For gases in a closed space, pressure and volume are inversely related. d. The volume occupied by an ideal gas is inversely proportional to the number of molecules present.
He function of the structure labeled 6 in Figure 41-1 is:
T
a. insulation.
b. neurotransmitter release.
c. binding neurotransmitters.
d. conduction of an electrical signal.
e. acting as a ligand-gated channel.
Which of the following statements is true of viral conjunctivitis?
A. It is caused by adenoviruses. B. It has a mucopurulent discharge. C. It is caused by Chlamydia trachomatis or Neisseria gonorrhoeae. D. It must be treated with both topical and oral antibiotics.
Which mechanism prevents fish sperm from fertilizing frog eggs?
a. energetic barriers
b. biological barriers c. prezygotic barriers d. ecological barriers e. postzygotic barriers