<span>Transfer of materials into a cell against a concentration gradient from low to high concentration requires active transport because you need energy for it to happen since its going againist the concentration gradient.
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Answer:
I think it is D, could you tell me I am wrong
Epithelial tissue is the type of tissue that lines the body cavities.
The best and most correct answer among the choices provided by your question is the first choice or letter A. Margarines are products <span> made up of fatty acids that are derived from alkenes.
</span>The main ingredients in most margarines are vegetable oils like soybean or safflower oil.Vegetable oils<span> are mostly unsaturated, which is a problem because unsaturated oils are liquid at room temperature and cannot be used as spreads.
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