What are responsible for the rapid mobilization of
the immune response after a subsequent attack by a
pathogen?
a. naive B cells
b. naive T cells
c. NK cells
d. memory cells
e. macrophages
Answer: d
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What organisms are good competitors for free water present in foods with low aw?
A) gram-positive cocci B) fungi C) gram-negative bacilli D) gram-positive bacilli
What is the correct term for proteins embedded in the plasma membrane that form a gap junction?
a. claudins b. cadherins c. occludins d. connexins
We recognize three levels of biodiversity: genetic
diversity, species diversity, and __________diversity. Fill in the blank(s) with the appropriate word(s).
Scientists are attempting to make a chicken look like a dinosaur ("dino-chicken") by using drugs or proteins to turn on certain homeotic genes in somatic cells during the development of a chicken embryo. If the scientists are successful in creating both
male and female "dino-chickens," and then the "dino-chickens" mate, what type of offspring would the two "dino-chickens" have? A) a male or female "dino-chicken" B) a male or female normal chicken C) You can't know for sure because of random fertilization. D) You can't know for sure because it depends on whether the modified homeotic genes are dominant or recessive.