Which of the following is involved in bringing amino acids to the ribosomes?
a. mRNA
b. mRNA, tRNA, and rRNA are all involved in transporting amino acids to the ribosomes.
c. rRNA
d. tRNA
Answer: d. tRNA
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Substance E is made in the pancreas, travels through the blood, and binds to a surface receptor on a target cell. After
dimerization and autophosphorylation, the receptor activates a signaling protein. Substance E is therefore the ligand for ____.
a. a receptor tyrosine kinase b. a G-protein-coupled receptor c. a hormone receptor d. a ligand-gated ion channel e. guanylyl cyclase
Individuals who are heterozygous for sicklecell
anemia have a greater resistance to
a. malaria. b. diphtheria. c. cholera. d. typhoid fever. e. all of these
Laboratory research has shown that if a solution containing lipids and proteins is agitated for a long time, then hollow structures called vesicles are produced that resemble ________
Fill in the blank(s) with correct word
What types of structures can show epigenetic inheritance?
What will be an ideal response?