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alisha [4.7K]
2 years ago
12

I NEED HELP!! ILL GIVE BRAINLIEST!!

Biology
1 answer:
suter [353]2 years ago
4 0
The equation for the chi squared value is the (observed-expected)^2/E
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3 years ago
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Which means of particle transport is shown in Figure 7–4 above?
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The correct option is D.
When it comes to movement of particles in an out of cells, there are two basic types of transportation, these are passive and active transportation. The passive transportation of particles does not require  the use of energy while the active transport system requires the use of energy in the form of ATP. From the diagram given in the question, it can be seen that energy is involved in the process. Energy is mainly needed to move the particles against the concentration gradient since the inside of the cell is highly concentrated while the outside has low concentration. <span />
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In its role as an antioxidant, _____ guards cell membranes, body proteins, dna, and cholesterol, and thus helps prevent heart di
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Answer:

The answer is Vitamin E or α-tocopherol.

Explanation:

Vitamin E is a <u>fat-soluble</u> vitamin is first absorbed in the small intestine and is then <u>stored at the liver</u>. It is an <u>antioxidant</u> which <u>protects cells from free radicals or reactive oxygen species (ROS)</u>. It can also prevent bad cholesterol from depositing in the blood vessels.

Vitamin E can be <u>naturally found in nuts, seeds, and vegetable oils</u>. As a dietary supplement, it takes the form of  α-tocopherol. The RDA depends on the age of the person, as it may range from <u>4 mg to 15 mg per day</u>.

<u>Vitamin E deficiency is so rare</u> that it will only occur if the person has a <u>fat malabsorption illness like Crohn's disease, abetalipoproteinemia</u>, etc. Symptoms of deficiency include <em>muscle weakness, retinal degradation, peripheral neuropathy, and an immunocompromised state</em>.

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3 years ago
Use the terms chloroplast and organelle in a sentence that describes cell function.
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Answer:

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Organelle:Organelles are specialized structures with cells that perform specialized functions.

Hope that helps

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3 years ago
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