What are the small circles of DNA that exist within the bacterial cytoplasm in addition to the bacterial chromosome?
a. pili
b. capsids
c. plasmids
d. chromatids
e. centromeres
c
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The latent phase in the viral growth curve and the lag phase of the bacterial growth curve are equivalent and represent the time it takes for the virus or bacterium to adapt to the culture conditions and begin growing
Indicate whether the statement is true or false.
The feeding mode of leeches is described as
a. predaceous. b. internal parasitism. c. external bloodsucking. d. predaceous and external bloodsucking. e. predaceous, external bloodsucking, and internal parasitism.
According to the multiregional model,
a. Homo erectus populations migrated out of Africa. b. Homo erectus evolved further in regions beyond Africa. c. Homo erectus populations gave rise to races of Homo sapiens. d. Homo sapiens subpopulations originated in several separate locations. e. all of these are true.
Which of the following sequences describes sexual reproduction in the fungal life cycle?
A) Haploid gametes divide by meiosis to produce a diploid zygote, which grows by mitosis to produce diploid mycelia. B) The diploid zygote divides by meiosis to form haploid spores, which produce haploid mycelia through mitosis. C) Free-swimming gametes fuse to form a diploid zygote, which grows by mitosis. D) Diploid spores divide by meiosis to form haploid gametes, which join to form mycelia. E) The haploid zygote divides by meiosis to form haploid spores.