Removal of introns, addition of a poly-A tail and addition of a guanine cap are all events that occur during:
a. protein folding.
b. transcription.
c. replication.
d. post-transcriptional modification.
e. translation.
d
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Proteins that act as ____________________ catalyze biochemical reactions and are vital components of the cell's metabolic pathways
Fill in the blank(s) with correct word
This simple plant tissue consists of dead cells
with thick, lignified cell walls that function in support. This plant tissue is
a. parenchyma. b. sclerenchyma. c. collenchyma. d. xylem. e. phloem
If the DNA of a certain organism has guanine as 30% of its bases, then what percentage of its bases are adenine?
A) 40% B) 20% C) 0% D) 10% E) 30%
Almost all cacti are native to the Americas, but there is a small, relatively uncommon group of plants closely related to cacti native to tropical western Africa. How can we explain this given the information in this chapter?
A) This might have been caused by divergent evolution. B) The plants might have floated across the Atlantic. C) The continents were once connected. D) All of the above are true.