What is the main role of kidneys?
A. To filter blood and remove toxins from it
B. To secrete hormones that help in osmoregulation
C. To secrete enzymes that help in digestion
D. To replenish oxygen in the bloodstream
Answer: A
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What does it mean to say that an allele is "fixed" in the population?
A. It has been repaired by typical mechanisms in the cell. B. It is an indication of no genetic variation at that locus in the population. C. It is an indication of low genetic variation at that locus in the population. D. It is an indication of high genetic variation at that locus in the population. E. It is an indication that locus cannot undergo mutation.
How can fossils provide evidence for macroevolutionary processes, such as the divergence of two species from a common ancestor?
A. by providing a complete record of the history of life B. by exhibiting some features of ancestral organisms and some features of more derived organisms C. by preserving the bones, rather than the soft parts of ancient organisms D. by preserving a large number of organisms present in one place and one time, as is seen in Messel Shale
What type of thinking is required?
What will be an ideal response?
A polysaccharide of glucose found in animals that is highly branched is:
A. glycogen B. sucrose C. cellulose D. chitin E. starch