Listeria virulence is directly related to its ability to
A) produce powerful toxins.
B) form very resistant endospores.
C) live within cells and thus avoid exposure to the immune system of its host.
D) move rapidly through the body using multiple flagella.
E) resist most antimicrobial agents.
C
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Molecules that are similar in sequence among distantly related organisms, such as many transcription factors important in development, are said to be evolutionarily conserved
A. true B. false
Elastin is found only in insects and some crustaceans and is the most elastic material known
Indicate whether the statement is true or false.
What is NOT a product of the light-independent reactions?
a. ADP b. NADP+ c. oxygen d. glucose e. free phosphates
Homologous recombination is an important mechanism in which organisms use a "backup" copy of the DNA as a template to fix double-strand breaks without loss of genetic information
Which of the following is not necessary for homologous recombination to occur? (a) 3? DNA strand overhangs (b) 5? DNA strand overhangs (c) a long stretch of sequence similarity (d) nucleases