More than 60% of all prescribed drugs target ____, due to their wide physiological impact
a. receptor tyrosine kinases
b. hormone receptors
c. guanylyl cyclase
d. ligand-gated ion channels
e. G-protein-coupled receptors
ANSWER: e
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Plants have special groups of self-renewing cells called
A. root cells. B. chloroplasts. C. cast cells. D. meristems.
What are the components of the Janzen-Connell hypothesis? Select all correct choices
A. Seeds located close to plants of the parent generation will have a higher survival rate. B. Seeds located far away from the parent generation will have a higher survival rate. C. Seeds from rare plants will have a higher survival rate. D. Seeds from common plants will have a higher survival rate.
Sickle cell disease is inherited as an autosomal recessive trait. The genotype of an individual with sickle cell disease is
A) homozygous dominant. B) homozygous recessive. C) heterozygous dominant. D) heterozygous recessive.
An antigen is?
A) a molecule recognized as being foreign to the body B) a molecule that protects cells from viral infection C) an antibacterial protein D) a protein that joining together to form a membrane attack complex