Which type of macromolecule is a polysaccharide?
a. protein
b. lipid
c. carbohydrate
d. hexose
Answer: c
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Plants' branches grow taller and branch less when light levels are low
A. true B. false
One reason that prokaryotic genes do not contain introns is that
A) the introns are cut out during binary fission. B) due to the short time the bacterium is around as a single organism, a 5' cap and poly (A) tail are added immediately for translation to take place. C) bacterial proteins are very short and not subject to mutation. D) translation sometimes begins before transcription has been completed because prokaryotes do not have a nucleus. E) integrated viral DNA is not recognized for transcription.
Eosinophils defend against protist and helminth parasites by
A. releasing cationic proteins and reactive oxygen metabolites. B. antibody production. C. complement activation. D. phagocytosis.
In what way would life be different if the element carbon was absent?
A. Life would not exist in any shape or form. B. There would be no organic compounds. C. There would be no inorganic compounds. D. The concept of pH would not exist.