Bicarbonate ions in the blood can absorb hydrogen ions, keeping the pH balanced. Therefore bicarbonate is acting as a ________ in the blood.
A. buffer
B. acid
C. alkaline
D. base
Answer: A
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When the spliceosome binds to the transcript shown above, it can attach _____
A) to the exons B) to the 5' UTR C) to the 3' UTR D) at certain sites along an intron
DNA sequence analyses indicate that the nearest living relatives to humans are:a
lemurs. b. gibbons. c. gorillas. d. orangutans. e. chimpanzees.
The name of the meristem that ultimately gives rise to secondary xylem and phloem is the
A. ground meristem. B. vascular cambium. C. intercalary meristems. D. primary meristem. E. cork cambium.
What are genetically engineered plants or animals that contain a gene from another organism called?
a. trans-cloned organisms b. transformed organisms c. transgenic organisms d. none of the above