Biology, 13.02.2020 17:48, kartikjain2002ozi29y
Which of the following statements about prokaryotic reproduction and genetic recombination is true?
Prokaryotes reproduced fission, a form of sexual reproduction and genetic recombination
Genetic recombination in prokaryotes can take place by taking up DNA from the environment. This is called transfection
During conjugation, a donor cell shares a DNA with a receptor cell
Phages are not considered to be a source of genetic recombination in prokaryotes
CRSPR-Cas is the asexual reproduction system in prokaryotes
Answers: 2
Biology, 21.06.2019 16:00, prettygirllniyiaa
Which of the following examples can cause gene flow between populations? a. an increase in predators to a population of zebra b. a volcanic eruption that kills half of a population of mice c. bird droppings that contain seeds from a different location d. a person that sprays a toxin on a group of mosquitoes
Answers: 2
Biology, 22.06.2019 13:20, crazymadhatter0
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
Which of the following statements about prokaryotic reproduction and genetic recombination is true?<...
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