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Gekata [30.6K]
3 years ago
14

What is it called when molecules move from low to high concentration across plasma membranes?

Biology
1 answer:
Semenov [28]3 years ago
7 0

Answer: Osmosis

Explanation: Osmosis is a process in which water move from an area of low solute concentration to an area of high solute concentration through a selectively permeable membrane. For osmosis to occur, it must be through a selectively permeable membrane. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration.

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Which month receives the most precipitation in Alexandria?
Dmitrij [34]

Answer:

May

Explanation:

may receives 3.99, the highest from the rest of the months

7 0
2 years ago
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Mark knows that animals reflexively blink when air is puffed at their eyes. Now Mark wants to use this fact and classical condit
Rus_ich [418]

Answer:

the tone is the neutral stimulus

Explanation:

In classical conditioning, as first experimented by Pavlov in his experiment with dogs, the bell that was presented initially was the neutral stimulus which was not capable of eliciting salivation alone. He later paired the neutral stimulus (the bell), with the unconditioned stimulus (meat powder) which naturally elicited salivation. The neutral stimulus then became associated with the unconditioned stimulus to eventually trigger salivation when presented alone.

In the situation of the rat of which Mark wants to train it by applying classical conditioning technique, the tone is the neutral stimulus. Except it is paired with the unconditional stimulus which naturally would make the rat blink, it would only attract the attention of the rat without making it to blink.

6 0
3 years ago
Peter who lives in the United States has been offered a job in India. Before he makes his decision, he reads books on India and
tekilochka [14]

Answer:

The answer is: false alarm

Explanation:

The "Signal Detection Theory" is <u>one of the theories used when it comes to psychology (particularly, perception and sensation</u>). When a person faces a <em>situation (stimulus or signal)</em> that he thinks is confusing, he can make a decision out of it.

If signals are present, this allows the person to decide whether it is present or absent. So, the outcome are hits or misses. When a signal is not present, the person still can decide whether it is present or absent. So, the outcome are "false alarms"<em> (if he decides its present) </em>or "correct rejection" <em>(if he decides its absent).</em>

In the situation above, Peter hasn't been to India. Thus, he doesn't know how it is to live in India nor the weather and culture in the country. So, in this situation, the signal is not present. However, Peter decides that the signal is present <em>(according to his perception)</em> and thus, he continued to go to India. However, he was disappointed with his decision. This kind of outcome is called "false alarm."

Thus, this explains the answer.

6 0
3 years ago
Even though Earth's South Pole receives
Inga [223]
Earth's Energy balance describes how the incoming energy from the sun is used and returned to space. If incoming and outgoing energy are in balance, the earth's temperature remains constant. So it’s B
3 0
3 years ago
When the polymerase chain reaction (PCR) is used to amplify segments of DNA, the sample is first heated, and then cooled, in cyc
baherus [9]

Answer:

At least 17 PCR cycles or 16 PCR cycles

Explanation:

As we know -

In one chain of  heating and cooling  of polymerase chain reaction (PCR), the strands of DNA gets doubled.

The general mathematical representation of this is

{2^n - (2 *  n)}

where "n" is the number of PCR cycles.

It is given that DNA strands  to be produced is 16 times the original quantity of DNA.

So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less  than 16 times the original quantity of DNA

8 0
3 years ago
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