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andreyandreev [35.5K]
3 years ago
11

Lydia hypothesizes that warmer temperatures promote faster cell division. Which experimental design would best allow Lydia to te

st her hypothesis?
Biology
2 answers:
frutty [35]3 years ago
8 0

Answer:

The answer is

Place twenty bacterial cells in each of three identical flasks full of nutrient broth. Then, place each flask in an incubator set at 10°C, 20°C, or 30°C. Finally, measure the number of bacterial cells in each flask every twenty minutes for four hours.

Your welcome! :D

Illusion [34]3 years ago
6 0
<span>An experimental design would be the most appropriate assuming she has access to the appropriate materials. She could set up an experiments where she has some cells and in one batch of cells she could raise the temperature and in the other batch she could do nothing. Then she can compare the cell division rate.</span>
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Answer:

The Question is incomplete. Here should be the complete question.

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Initiating an action potential

Under most circumstances, once an axon's membrane potential reaches threshold (about -55 mV in mammals), an action potential is automatically triggered. The graph below shows the changes in membrane potential that occur in an axon membrane that is initially at resting potential.

In response to a stimulus, the membrane slowly depolarizes until the membrane potential reaches a particular value, called threshold. At threshold, a rapid depolarization of the membrane occurs and an action potential is initiated.

Drag the labels onto the flowchart to show the sequence of events that occurs once

the membrane potential

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-2. Na+ ions rush into the cell

-3. membrane potential rises (depolarizes) rapidly

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The ANSWER WILL SURELY BE

membrane potential reaches threshold ---> many Na+ voltage-gated channels open ---> Na+ ions rush into the cell ---> membrane potential rises (depolarizes) rapidly

(1--->4--->2--->3)

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