State reasons for the following:
(i) Mitochondria are known as the powerhouse of the cell.
(ii) Plastids are able to make their own protein.
(iii) Plant cell shrinks when kept in hypertonic solution
Answers
Answer:
(I) Mitochondria are tiny organelles inside cells that are involved in releasing energy from food. This process is known as cellular respiration. It is for this reason that mitochondria are often referred to as the powerhouses of the cell. ... This process is known as cellular respiration.
(2) plastids are able to make their own proteins because they contain small,circular DNA,ribosomes and the enzymes required for the synthesis of proteins. Plastids are known as semi-autonomous organelle as they have their own ribosome and DNA. Therefore they are able to make their own proteins.
(3) If you place an animal or a plant cell in a hypertonic solution, the cell shrinks, because it loses water ( water moves from a higher concentration inside the cell to a lower concentration outside ). So if you get thirsty at the beach drinking seawater makes you even more dehydrated.
Explanation:
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Answer:
i)Mitochondria is known as the powerhouse of the cell as it generates an energy currency called Adenosine Triphosphate.
ii)Plastids are able to make their own proteins as they have their own DNA ,ribosomes and enzymes required for its synthesis.
iii)Plant cell shrinks in hypertonic solution as it loses water through osmosis.