Biology, 25.07.2019 05:00 chefjones06p0gvlh
Over many years, the climate on the west side of the island has undergone drastic changes while the climate on the east side has remained the same. it is most likely that population b will1) migrate and intermix with population a2) become extinct3) have evolved more than population a4) have evolved less than population a
Answers: 1
Biology, 21.06.2019 19:30
What would be the most likely result if the ph of the stomach were increased to 5
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Biology, 22.06.2019 05:50
Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?
Answers: 1
Biology, 22.06.2019 11:00
2. which of the following statements does not accurately describe stem cells? a. embryonic stem cells make up the inner cell mass of a blastocyst. b. with more research, stem cells may be used to repair or replace damaged cells. c. the use of stem cells is without any objections since it can be used in therapies to humans. d. adult stem cells are multipotent and can differentiate into many types of cells.
Answers: 1
Biology, 22.06.2019 13:20
Choose the incorrect statement (a) the motor end plate membrane is only capable of generating graded potentials, but it is contiguous with the skeletal muscle sarcolemma, which can generate action potentials. (b) propagation of an action potential through the t-tubules into the sarcoplasmic reticulum triggers the release of ca++ into the cytoplasm of a skeletal muscle fiber. (c) the generation of suprathreshold endplate potentials in multiple muscle fibers could be due to the increased frequency of action potential generation at the axon hillock of a single motor neuron. (d) a greater amount of ach would be found in the presynaptic vesicles of a motor unit that fired several action potentials after exposure to botulinum toxin, than in a motor unit that fired several action potentials after exposure to the venom of the krait snake (which contains α-bungarotoxin).
Answers: 2
Over many years, the climate on the west side of the island has undergone drastic changes while the...
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