The restriction enzymes that cut the bacteriophage dna cannot cut the bacterial chromosomal dna. explain this statement. a. the bacteria can cut the viral dna at its specific restriction site, but they cannot cut their own dna since bacterial chromosomal dna has altogether a different dna sequence than the viral dna / b. the bacteria can cut the viral dna at its specific restriction site but protect their own chromosomal dna by modifying its bases and blocking the restriction enzyme / c. the bacteria can cut the viral dna at its specific restriction site but protect their own chromosomal d

Construct at least two possible hypotheses for the student’s experiment.

Aquaternary consumer species would be expected to have a smaller population than a secondary consumer species. select the best answer from the choices provided t f

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).