RNA is specifically produced in the:
A. Ribosomes
B. DNA
C. Nucleolus
D. Chromatin
Ans: C. Nucleolus
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A given medium can be either selective or differential but not both.
Answer the following statement true (T) or false (F)
Which of the following is(are) true about the DNA of a zebrafish that glows in the dark
because its DNA contains and expresses the firefly gene for bioluminescence?
a. It has recombinant DNA. b. Its DNA has mutated. c. It has evolved. d. The DNA contains a bacterial plasmid.
What is the role a species plays in an ecosystem?
A) ecological niche B) trophic level C) biophilia D) biomass
A potassium ion gradient is set up in insect Malpighian tubules through an active transport process. As a result, potassium concentration is higher in the lumen of the tubules than in hemolymph
How would the potassium gradient affect water movement? A) Water would be forced out of the lumen of the Malpighian tubules through an osmotic gradient. B) The potassium gradient would have no effect on water movement. C) There would be a net movement of water into the lumen of the tubules. D) Water would be conserved, forming a hypertonic solution in the Malpighian tubules.