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Juli2301 [7.4K]
3 years ago
7

The relative concentration of each in the plasma membrane is partly regulated by the:_______

Biology
1 answer:
hodyreva [135]3 years ago
4 0

Answer:

<u>ion channels</u>

Explanation:

The plasma membrane plays a critical role in regulating and maintaining ionic potential inside the cell, relative to ionic concentration present outside the cell. The ion channels are specific, in that they only recognize and allow particular ions to pass through and block the rest. Their opening and closing depends on the ionic potential during that time period.

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A geographic information system (GIS) helps scientists visualize, analyze, and interpret data about locations on Earth. Which ex
s344n2d4d5 [400]

<u>Answer</u>: C) They can find the neighborhoods that are in the most danger, where to set up shelters, and which routes will help people reach safety.  

<u />

<u>Explanation</u>: GIS is an extremely useful tool in analyzing geographic information. By overlaying  topographic data as well as infrastructure, populations, bio-physical datasets (e.g. flood, landslide, storm surge, earthquake data), vulnerable areas as well are relatively safe areas can be detected. Thus, routes to safety as well as shelter construction can be planned.

The strength of an earthquake as well floodwater depth cannot be determined in advance with GIS. The bio.physical datasets that are used come from events that have already occurred and not future events. With GIS the damage caused by a future even can be <em>estimated</em>, but the strength of the natural disaster itself cannot.

7 0
3 years ago
How does the polarity of water explain all of its properties?
zhenek [66]

Answer:

It allows it to disolve easily

Explanation:

It is a chemical change

8 0
3 years ago
Which of the following is not an energy resourse obtained from the ocean?​
Olin [163]

Geothermal Energy and Solar Energy

7 0
3 years ago
Calculate the work done if a 5 N force applied to the right moves an object 3 meters to the right.
Vadim26 [7]

the only reason i am wasting one of the two answers your post is allowed to get is because its been 3 hours and no one has answered yet.

Where do you go to school? I think it is very coincidental that you have the exact same question i do, and you had the question exactly when I got the question...about 3 hours ago. Now it IS a curriculum so its not that weird, but by any chance are you in K12? 8th grade?

8 0
3 years ago
An inhibitory stimulus has occurred. B. Chemically gated potassium channels have opened. C. Excessive potassium has diffused out
andrezito [222]

Given question is incomplete. Complete question has been attached.

Answer:

C. Excessive potassium has diffused out causing hyperpolarization.

Explanation:

The nerve action potential can be divided into following stages:

  • Stimulus is detected by the cell in resting stage.
  • Sodium channels in the membrane open from where influx of sodium ions occur which is called depolarization
  • After a while, sodium channels close and potassium channels open from where efflux of potassium ions occur which is called repolarization.
  • The membrane potential further lowers due to continous efflux of potassium ions which is called hyperpolarization.
  • After a while potassium channels close and membrane returns to its resting stage.

In the given figure, stage 4 depicts hyperpolarization because the membrane potential has dropped to the lowest point below -70mV. Hence, option C is correct.

7 0
3 years ago
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