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Bess [88]
3 years ago
6

In facilitated diffusion, what is the role of the transport proteins?

Biology
1 answer:
Alenkinab [10]3 years ago
4 0

Answer:

A

Explanation:

There is no much more to say than the letter A describes the process of facilitated diffusion.

The normal diffusion ocurres when the solute passes the membrane through the space of the double layer of phospholipids. Particles that are small and apolar can pass trough the membrane without problems.

For bigger or polar particles we need to use a protein system to help them pass into the cytoplasm. That's what we call Facilitated Difusion.

About the other options:

B) That's the explanation about active transport. That happen for every particle who is going against the gradient of concentration.

C) Again: if we are talking about diffusion, there is no energy needed.

D) The Water Molecules suffer the process os osmotic pressure. Water deslocates to the higher gradient of concentration - contraty what the other particles do.

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Compare and contrast mineral resources and mineral reserves
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Answer:

Mineral resources are a concentration of minerals in Earth's crust that can be extracted and processed now or in the future, and including unidentified sources. Mineral reserves are those that are identified and can be mined profitably under current economic conditions with current technology. Both are potentially valuable, and for which reasonable prospects exist for eventual economic extraction

Hope this helped

5 0
3 years ago
What will a cold air mass do when it moves into a warm air mass
leva [86]

Your answer is B.

It's called an occluded front where the cold air meets the warm air underneath it. Hot air rises over cold air. :) Hope this helps you.

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3 years ago
What cellular structures can be observed with the aid of light microscopy and electron microscopy?​
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The resolution of a light microscope is dependent on the wavelength of light that is the main beam of illumination. Light has approximately 0.4 um (UV)- 0.7um (Infrared) wavelength. Organelles smaller than about 0.5 um will be difficult to discern with a light microscope.

With an electron microscope one can view, in addition, even the ribosomes and mitochondria, chromosomes, tubules etc.

An electron microscope can discern very minute details of a cell. This is because its resolution is dependent on the very small wavelength of a beam of electrons which is approximately 0.002 um (about 10,000 times powerful than a light microscope)

8 0
3 years ago
Hypothesis: What do you predict you will find about the number of cells in each of the phases of the cell cycle? Provide an expl
Wittaler [7]

For the Data and Observation refer the image attached.


Data Analysis:  

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Conclusion:

Be sure to answer the following reflection questions in the conclusion of your lab report:

Based on your data, what can you infer about the length of time spent in each stage of the cell cycle?

The most time is used in the cell cycle is in the interphase.

What stages were the longest and shortest? Give a brief explanation of why these stages may have that time period.  

The longest phase of the cell cycle is the Interphase. Most of the total time of cell cycle is spent in the Interphase.  The reason for this being is that the cell prepares itself for its division, and also in this phase, the necessary protein for the duplication of organelles occurs.

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An inappropriate immune system response against a nonpathogenic antigen is a(an)?
Novosadov [1.4K]

Answer:

b

Explanation:

i had a test on it

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