The digestive systems of carnivores typically
a) include relatively long intestines with colonies of bacteria
b) contain gizzards for digesting seeds
c) have more than one stomach to digest cellulose
d) are short and produce fast-acting enzymes
Ans: d) are short and produce fast-acting enzymes
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In a zygotic life cycle:
A. Haploid cells form gametes that fuse to produce thick-walled diploid zygotes capable of surviving stressful conditions. B. There is an alternation of generations. C. The zygote undergoes meiosis and produces many heat-resistant spores that increase the population size and aid in dispersal. D. Haploid cells form spores that in turn fuse to produce thick-walled zygotes capable of surviving stressful conditions. E. none of the choices provided.
Which of the following is NOT unique to eukaryotes?
a. snRNPs b. sorting signals on proteins c. capping the 5' end of mRNA d. adding a poly(A) tail to mRNA e. RNA polymerase II
What pattern of cleavage is characteristic of mammals?
A. holoblastic cleavage with eggs containing little or no yolk B. some yolk, and cleavage resulting in vegetal and animal poles C. meroblastic cleavage with eggs containing almost entirely yolk D. holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass concentrated at one pole E. holoblastic cleavage with eggs containing very little yolk, but with the inner cell mass distributed uniformly
Exchange of genetic material in ciliates is known as
A. conjugation B. panmixis C. macronucleosis D. myxomycetosis E. micronucleosis