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What is active transport?

This is a form of movement of molecules. This is the movement of molecules from an area of low concentration to an area of high concentration (against the concentration gradient) across a membrane. As it is ...
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Answered by Zimeng W. • Biology tutor
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Meiosis and mitosis are different types of division in human cells. Compare the two processes by referring to where each takes place and the kind of products that are made.

Meiosis is a mechanism of sexual cell division used to generate gametes, or sex cells, in reproductive organs. For example, generation of eggs in ovaries. By contrast, mitosis is an asexual method of cell di...
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Answered by Megan C. • Biology tutor
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Describe the similarities and differences between the processes of diffusion and osmosis. [4]

Both diffusion and osmosis are processes concerning the movement of molecules from an area of high concentration to an area of low concentration, along a concentration gradient. Any type of molecule can move...
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Answered by Ruth N. • Biology tutor
3302 Views

What are the main characteristics of the phospholipid bilayer?

The phospholipid bilayer is the main component of the plasma membrane. Phospolipids consist of two parts with different properties. One part is often referred to as 'head' or 'water-loving', which is hydroph...
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Answered by Anna N. • Biology tutor
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What is photosynthesis? Where does it occur? What are the reactants and products of the process?

Photosynthesis is the process that allows plant cells to convert light energy (from the sun rays) into chemical energy. This energy is biologically useable to the plant, and essential to it's survival. The r...
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Answered by Hannah D. • Biology tutor
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