Which type of plankton are tiny and aquatic heterotrophs?
A. Zooplankton
B. Phyplankton
C. Tryplankton
D. Metaplankton
E. Holoplankton
Answer: A
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Clay is considered a possible site for early polymerization because it binds organic monomers and contains zinc and
iron ions that may have functioned as ATP. ______________ Indicate whether the statement is true or false.
A protein that initiates gene transcription and allows for non-glucose molecules to be used is
A. promoter. B. CAP. C. repressor. D. operon. E. operator.
In what respect do hominins differ from all other anthropoids?
A) lack of a tail B) eyes on the front of the face C) bipedal posture D) opposable thumbs
Which of the following statements about RNA processing in eukaryotes is INCORRECT?
A. A 7-methylguanosine cap is added on to the 5?end of the mRNA. B. Modification occurs in the nucleus. C. The excision of introns from pre-mRNA is the only modification required to produce a mature mRNA. D. A poly A tail is added on to the 3? end of the mRNA. E. A protein/RNA complex is used to remove introns from the pre-mRNA.