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antoniya [11.8K]
3 years ago
15

A measurement of a star’s brightness is called

Biology
1 answer:
nordsb [41]3 years ago
5 0
 the star's magnitude.
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Enzymes are biological catalysts which speed up biochemical reactions.

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Why are there more stomata in the bottom of leaves
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Stomata play an important role in photosynthesis as they allow the plant to absorb carbon dioxide from the environment. In exchange, stomata allow oxygen, which is a waste product of photosynthesis, to be released. In the process, water vapor is also lost as the internal parts of the leaves are exposed. To reduce exposure, stomata are found on the underside of the leaves. They are protected from the sun as excessive heat can increase the rate of water vapor leaving and thus wither the plant. Stomata also have guard cells around the epidermis that close when too much water is being lost.

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Tertiary.

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Any gene that can turn a normal cell into a tumorous cell is called an
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It would be an oncogene, these can be inherited mutations of proto-oncogenes that cause the oncogene.

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Not all leaves are green. Some plants have leaves that appear purple. What do you know about the pigments in plants whose leaves
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<h3><em>Anthocyanin</em></h3>

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These pigments give plants, flowers, and fruits, their brilliant colors ranging from pink through scarlet, purple, and blue. Anthocyanins are particularly found in fruits such as grapes, purple grapes, black berries, strawberries, and raspberries.

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