DNA polymerase always moves from ________ along the strand resulting in DNA replication to be continuous on one strand and discontinuous on the other
A) phosphate group to base B) 5' to 3'
C) 3' to 5' D) base to phosphor group
C
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G protein coupled receptors are a large class of receptors that bind hormones as well as other signaling molecules, neurotransmitters, and even odorants. They are a major target of pharmaceutical drugs for various disorders. Typically, the drug acts as an antagonist, blocking the binding site on the GPCR. Why is the receptor a more attractive drug target than the G protein activated downstream? (Check all that apply.)
_____ It is easier to target molecules from the outside of the cell membrane, because getting drugs into the cell can be difficult. _____ Interfering with the G protein would require getting a drug across several membranes into the cell's nucleus. _____ The "G-protein" is not really a protein but just a GTP molecules, which is too small to be a possible drug target. _____ Since GPCRs are so widespread and perform many roles in the body, targeting G proteins used by multiple GPCRs would create side-effects beyond the targeted physiological function. _____ Since the GPCRs bind a variety of unique ligands, their structures are varied enough to be able to create specific targeted drugs for certain pathways. _____ It is easier to target molecules from the outside of the cell membrane, because getting drugs into the cell can be difficult. _____ The "G-protein" is not really a protein but just a GTP molecules, which is too small to be a possible drug target.
The epiglottis is located ____
a. above the pharynx b. below the pharynx c. below the larynx d. below the esophagus e. in the middle of the pharynx
If the syringe contains live S strain
Streptococcus pneumoniae a. the mouse will die. b. live R strain will be detected in the mouse's blood. c. the mouse will live. d. no live S strain will be detected in the mouse's blood. e. the live S strain bacteria will lose their pathogenicity.
If you were to buy land in order to plant crops, which type of biome would you prefer?
A) savanna B) prairie C) tropical forest D) chaparral