After a stimulus results in initial depolarization of a region of cell membrane of a neuron, a threshold voltage is reached. once this happens, which of the following takes place? a. a large number of voltage-gated sodium channels quickly open, causing a rapid change in membrane potential. b. voltage-gated sodium channels quickly close, voltage-gated potassium channels open, and recovery begins. c. a large number of voltage-gated potassium channels quickly open, causing a rapid change in membrane potential. d. voltage-gated sodium and potassium channels quickly close, and recovery begins.
Answers: 3
Biology, 21.06.2019 18:30
Match the type of adaptation to the correct example, structural adaptation functional adaptation behavioral adaptation example type of adaptation elephants live in herds to protect their young leaves of a rain forest plant species have a pointed tip that enables rainwater to drain off easily. camels have nostrils that they can close snakes produce venom to kill prey and defend themselves. earthworms coil when touched, as part of a defense mechanism. human skin darkens with increased exposure to sunlight.
Answers: 3
Biology, 22.06.2019 16:30
Aplant with dark red flowers is crossed with a plant with white flowers. all of the offspring have dark red flowers with white spots. the alleles got flower color in this plant are both dominant both recessive codominant incompletely dominant
Answers: 1
After a stimulus results in initial depolarization of a region of cell membrane of a neuron, a thres...
Mathematics, 27.08.2019 17:30
Mathematics, 27.08.2019 17:30
Social Studies, 27.08.2019 17:30
Health, 27.08.2019 17:30
Mathematics, 27.08.2019 17:30
Biology, 27.08.2019 17:30
Physics, 27.08.2019 17:30
Biology, 27.08.2019 17:30
Social Studies, 27.08.2019 17:30