Which of the following is a disadvantage of an
exoskeleton?
a. It must be shed for its owner to grow.
b. It does not provide as efficient a muscle
anchorage as an endoskeleton.
c. It allows for excess water loss.
d. It is not flexible enough to allow a full range of
movement.
e. It is not able to absorb pigments for sufficient
camouflage.
Answer: a
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If the innate immune response is not effective,
what form of immune response occurs next?
a. antigen detection of PAMPs b. phagocytosis c. NK cells start destroying cells d. antigen detection by antibodies e. more than one of these occurs next
During processing in the nucleus, a(n) ____________________ is added to the 3’ end of mRNA molecules. Fill in the blank(s) with the appropriate word(s)
The sex of a human is determined by:
a. the number of chromosomes. b. the number of autosomes. c. the presence of only one X chromosome. d. the number of sex chromosomes. e. the presence of a Y chromosome
If two giraffes were crossed, where one is heterozygous for albinism (a) and the other has a homozygous dominant genotype, what would be the expected genotypic and phenotypic ratios?
a) 2 AA: 2 Aa: 0 aa; all pigmented b) 1 AA: 2Aa: 1aa; 3 pigmented: 2 albino c) 2 AA: 2 Aa: 0 aa; 4 pigmented: 2 albino d) 2 AA: 0 Aa: 0 aa; all pigmented e) 0 AA: 0 Aa: 1 aa; all albino