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ELEN [110]
3 years ago
5

A second action potential cannot be generated until ________.

Biology
1 answer:
Bingel [31]3 years ago
5 0

Answer:

"Action potential is a rapid rise and subsequent fall in voltage or membrane potential across a cellular membrane with a characteristic pattern."

It is the mode through which a neuron transports electrical signals.

Explanation:

  • Option - (a) is the best choice to choose from,
  • <u>The refractory period :</u>

A second action potential cannot occur until the membrane has recovered or reestablished, this is the refractory period. The absolute refractory period coincides with inactivation of voltage-gated sodium channels which makes it impossible to generate another nerve impulse.

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PLEASE HELP !!! ASAPPPP !!!
STatiana [176]

Answer:

Is this USA Test prep?

I believe that it is all except the 2nd one

Explanation:

7 0
3 years ago
The ecology question above says : A fast swimming strong body fish such as a swimming which is adapted to clear fast and strong
Dafna11 [192]

Correct question:  A fast swimming strong body fish such as a <u>salmon</u> which is adapted to clear fast and strong water current would most likely be found in which aquatic zone? Options in the attached file

Answer:

Source of a river zone

Explanation:

The fishes body is directly correlated with their environment and the pressures they receive from it. Those animals that are used to living in clear waters, with fast currents must be very strong, must have a hydrodynamic torpedo-like body and big and strong caudal fin to propel against the currents. These animals are used to living in water masses such as the source of a river zone.

Rivers belong to lotic environments, characterized by constant moving water.

  • Profundal zone: Sunlight can not reach this zone, so there are no plants. The Water movement is very limited, and in most cases, water is not clear.
  • Littoral zone: Is the transition zone, near the shore, where the light easily reaches the bottom. Usually, there is plenty of vegetation fixated to the bottom.
  • Wetland zone: In general these are calm water, very rich in diversity, and a proper breeding area for a wide variety of fish.
  • Source of a River zone: Rivers flow from higher to lower areas. They originate at the top of the mountains and fastly descend to finally end in a lake or in the sea.

Some species of salmons characterize by living in the sea during sexual maturity, but whenever they need to breed, they go back to the area where they were born. This is in sweet water. They swim in the river until they reach the place where they are going to oviposit. In order to do this, they need to swim against the current. Many times, females die trying to reach this special place.

7 0
3 years ago
The template strand of part of a gene has the base sequence TGAGAAGACCAGGGTTGT. What is the sequence of RNA transcribed from thi
Klio2033 [76]

Answer:

The answer to your question is ACUCTTCUGGUCCCAACA

Explanation:

Base sequence

                         TGAGAAGACCAGGGTTGT

Nitrogenous bases change from DNA to RNA

                   DNA                      RNA

                      Adenine                 Uracil

                      Thymine                  Adenine

                      Guanine                 Cytosine

                      Cytosine                 Guanine

Then from left to right, the new sequence the RNA is

                       

                           ACUCTTCUGGUCCCAACA

                         

3 0
3 years ago
Interspecies Relationships
lianna [129]

Answer:

<em><u>Commensalism</u></em>=Birds that live among cattle to eat insects stirred up by grazing. it

<em><u>Commensalism</u></em>=An Egyptian plover eating bugs off of a giraffe or rhino.

<em><u>Parasitism</u></em>=A tick living on a dog drinking its blood

<em><u>Predation</u></em>=A bear catching and eating a salmon from a river.

<em><u>Predation</u></em>=A bobcat catching and eating a rabbit.

<em><u>Mutualism</u></em>=A clown fish living in the tentacles of an anemone protected from predators.

<em><u>Mutualism</u></em>=Bees gathering nectar and then spreading pollen from a flower.

<em>Parasitism</em>=A tapeworm living in the digestive system of a horse.

8 0
3 years ago
[BWS.02]Which of these questions can be answered through science?
GREYUIT [131]

Answer:

Is wood heavier than paper

Explanation:

This is the only question that can have a definite answer and not an opinionated response

5 0
3 years ago
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