Chlorosis, stunted growth with yellowing and death
of young leaves, is caused by a deficiency of
a. nitrogen.
b. zinc.
c. magnesium.
d. iron.
e. any of these.
Answer: a
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Cartilaginous fishes retain __________ in their body,
so they do not lose or gain water by osmosis. Fill in the blank(s) with the appropriate word(s).
How many codons exist in the genetic code?
a. 3
b. 9 c. 16 d. 64 e. 128
How does the rate of initiation of transcription relate to the similarity of the promoter region to the consensus sequence?
What will be an ideal response?
For a newly evolving protist, what would be the advantage of using eukaryote-like cell division rather than binary fission?
A) Binary fission would not allow for the formation of new organisms. B) Cell division would allow for the orderly and efficient segregation of multiple linear chromosomes. C) Cell division would be faster than binary fission. D) Cell division allows for lower rates of error per chromosome replication. E) Binary fission would not allow the organism to have complex cells.