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2 years ago

What happens during prophase?

Biology

1 answer:

hichkok12 [17]2 years ago

3 0

Answer:

Explanation:

During prophase, the chromosomes condense and centrosomes move to opposite sides of the nucleus, initiating formation of the mitotic spindle.

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CAN SOMEONE HELP ME PLSS!!!!!!!!!!!!!!!! This is due today. It doesn't have to be super long at least 7 sentences. Explain how t

Nutka1998 [239]

The ocean waters at the equator are warm because they receive more of the sun rays than the waters at the at the poles. Therefore, the water in these regions is less dense than those at the poles. The oceans currents, moving towards the poles from the equator, move on the surface waters while those from the poles move on the ocean floor.

As the warm currents move to the poles and cool, they become more saline because they become more concentrated with salts –saturation point lowers with temperatures. At the poles, most of the salts in ejected from the waters as brine as the water sinks to the ocean floor due to density.

This movement of water currents in such circular motion forms the Thermohaline Circulation. Heat on the planet is distributed in this way.

5 0

4 years ago

What is the correct order of biological organization from broadest to most specific

quester [9]

Answer:

This is just the order of taxonomic groupings.

Domain (Broadest)

Kingdom

Phylum

Class

Order

Family

Genus

Species (Most specific)

8 0

4 years ago

Read 2 more answers

How are termination signals detected in transcription?

AysviL [449]

It is detected my the micro chips and all of the electronics and all of that stuff

6 0

3 years ago

mohen or something I know you are out there I really miss you I am vivian King for life we have spoken before or my profile pic

Valentin [98]

Answer:

huh ?????????????????

7 0

3 years ago

At label ________, the cell is not hyperpolarized; however, repolarization is in progress, as the sodium channels are inactivate

azamat

Answer: C

Explanation:

When a neuron receives a stimulus, the sodium channels present in the membrane are opened, and therefore Na+ enters the cell in favour of the concentration gradient, so that the membrane potential changes to positive by means of ion exchange, producing depolarization. If this depolarization reaches a certain threshold value, an action potential is generated. The next step is the opening of the potassium channels and the inactivation of the sodium channels, so that the repolarization of the membrane takes place. The sodium channels, will return to the closed state in the hyperpolarization to continue in this state during all the rest potential achieving the action potential to return to -70 mV (repolarization).; until the arrival of a new action potential which produces the activation and opening of the sodium channels, repeating the cycle again and generating a new depolarizing action. This process is part of the synaptic transmission.

So, hyperpolarization is any change in the cell's membrane potential, which makes it more polarized. This means, hyperpolarization is an increase in the absolute value of the cell's membrane potential. Thus, changes in membrane voltage where the membrane potential is more distinctly positive or negative are hyperpolarizations.

During the repolarization period after an action potential, the membrane potential is more negative than when the cell is in "rest period". In the picture, this repolarization period is about 1-2 milliseconds. <u>So, repolarization is the time in which the membrane potential is hyperpolarized with respect to the resting potential.</u>

In the attached figure, part C indicates this repolarization period.

6 0

4 years ago