Prokaryotic cells are cells that do not have a true nucleus or most other cell organelles.
Eukaryotic cells are cells that contain a nucleus and organelles, and are enclosed by a plasma membrane.
Answer:
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D. oxidation-reduction reaction
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Explanation:
1. Oxidation-reduction reaction: An oxidation-reduction reaction (also known simply as redox reaction) is one of the type of chemical reaction, it involves a transfer of electrons between two species.
2. In plants light is absorbed by chlorophyll which causes transfer of electron from water, and the final acceptor of electron is oxygen.
3.Plants takes carbohydrates from environment and water from earth, and with the help of sun-light they make carbohydrates and oxygen, so they are called autotrophs.
Answer:
look it up on goog or something
Explanation:
Proteins are the compounds that do most of the work in the cell.
Answer: Proteins
Stream gradient is the grade measured by the ratio of drop in elevation of a stream per unit horizontal distance, usually expressed as feet per mile or metres per kilometre.