Protein kinases ____
a. add phosphate groups to proteins
b. bind cGMP
c. stimulate adenylyl cyclase
d. polymerize amino acids
e. hydrolyze proteins
ANSWER: a
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Which rapidly growing Aspergillus spp. (2 to 6 days) best describes a mold that produces a fluffy-to-granular, white-to-blue green colony?
a. A. niger b. A. flavus c. A. fumigatus d. A. terreus
You are given two nucleic acids; one RNA and the other DNA. What are the main features to determine which is the DNA?
_____ DNA will have thymine instead of uracil in its nitrogenous bases. _____ DNA will have a double-stranded structure. _____ DNA will have ribose as the sugar in its backbone. _____ DNA will have uracil instead of thymine in its nitrogenous bases. _____ Adenine will be present in the DNA.
Diatoms can best be described as
a. unicellular and autotrophic. b. unicellular and heterotrophic. c. multicellular and autotrophic. d. multicellular and heterotrophic. e. multicellular and parasitic.
Which of the following are heterotrophs?
a. primary carnivores b. herbivores c. detritivores d. decomposers e. all of these