The initial depolarization associated with the action potential is the consequence of the opening of _________________ at the axon hillock
A. voltage-gated potassium channels
B. voltage-gated calcium channels
C. voltage-gated sodium channels
D. voltage-gated chloride channels
C
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The profundal zone is characterized by:
a. phytoplankton only b. producers and consumers c. plants and animals d. decomposer only e. decomposers and detritivores
Which of the following is not a reason for the importance of mRNA processing in eukaryotes?
A) longevity in the cytoplasm B) coupling of transcription and translation C) presence of a nuclear membrane D) turnover in the cytoplasm E) removal of introns
The condition where tissue from the uterine lining grows outside the uterus is called ______________
A. endometriosis B. pelvic inflammatory disease C. uterine prolapse D. ectopic pregnancy
If you place a small piece of a cracker on your tongue, what would you expect to happen?
A) The vitamins in the cracker are immediately absorbed. B) Salivary amylase degrades the starch from the cracker into glucose. C) The proteins in the cracker begin to be digested. D) The flavor becomes less noticeable because the sugars are digested.