In a unicellular organism, the cell membrane carries out a function most similar to which structure in a human?

a. lung

b. brain

c. ovary

d. heart

Two models of cells are shown below. why would model b be better for moving nutrients in and out of the cell?

You have a container filled with pure water and semi-permeable membrane dividing it in half. If you add 10 grams of salt to the left half, the water will move to the

Fossil fuels are usuallyFossil fuels are usually formed from: a. Remains of formerly living things covered by thrust faults in regions with much oxygen. b. Remains of formerly living things buried by sediments in regions with little oxygen. c.

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This table shows 3 different groups of crocodiles. Each group, A, B and C, is in a category based on their total lengths in meters. Study the chart and choose the statement below that is a valid conclusion based on the data in the table.

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What tool is used to measure the movements of paramecium

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How does the color of light affect the rate of photosynthesis