Biology
Effect of temperature on enzymes: does heat kill them?
Heat doesn't kill enzymes, because an enzyme was never alive. Warming an enzyme speeds it up until it reaches its best temperature, ca...
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Biology
Difference between xylem and phloem: which carries food?
Phloem carries a plant's food, not xylem. Xylem is the plant's water pipe: hollow tubes of dead cells that carry water and mineral...
Biology
Osmosis Potato Practical: Percentage Change in Mass
Osmosis is the diffusion of water from a dilute solution to a more concentrated solution through a partially permeable membrane. Only the ...
Biology
Why are cells so small? Surface area to volume ratio
Cells are small because everything they need gets in through their surface, but every part of the inside uses it. As a cell grows, its vol...