Very high hematocrit is risky because of increased blood ___
Fill in the blank(s) with the appropriate word(s).
Answer: viscosity
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RNA is involved in which of the following cellular processes?
A. transcription B. transcription and translation C. translation and DNA replication D. DNA replication and transcription E. DNA replication, transcription, and translation
Which of the following reasons explain why bacteria can continually divide?
A. Because they are so simple. B. Because their DNA is circular so it never shortens after replication. C. Because DNA replication is much quicker in bacteria than in eukaryotes. D. Because they have plasmids. E. Because they only have one chromosome.
Which of the following describes the function of the lacO region of the lac operon?
A. It encodes for the Lac repressor protein. B. It contains the promoter for the operon. C. Mutation of this region leads to constitutive expression of the operon. D. It encodes for the galactoside permease protein.
Genetic variation leads to genetic diversity in populations and is the raw material for evolution. Biological systems have multiple processes, such as reproduction, that affect genetic variation
They are evolutionarily conserved and shared by various organisms. Which statement best represents the connection between reproduction and evolution? A) Plants that use sexual reproduction are rare since this type of reproduction in plants does not contribute to genetic diversity. B) In order to increase genetic diversity for evolution in sexually reproducing organisms, mutations must occur in the zygote after fertilization. C) Since prokaryotic organisms reproduce asexually, there is no mechanism for them to add genetic diversity for evolution. D) Sexual reproduction increases genetic variation because random mutations can be shuffled between organisms.