Helical and icosahedral are terms used to describe the shape of a viral ________.
A. capsomere
B. envelope
C. spike
D. core
E. capsid
Answer: E
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"Double-Blind" experiments are designed so that only subjects do not know if they are receiving placebo or drug
Indicate whether the statement is true or false
Regarding the lactose utilization system in E. coli, a gratuitous inducer is a molecule that is chemically analogous to lactose and induces the operon, but it is not a substrate for the enzymes of the lac operon
Indicate whether the statement is true or false
Which of the following statements regarding Streptococcus pyogenes is FALSE?
A) It produces protein A, which inhibits opsonization. B) It is beta-hemolytic. C) It has group A Lancefield antigens. D) It produces streptolysins. E) It can be lysogenized by a temperate bacteriophage to produce erythrogenic toxins.