The life and activities of a cell is controlled by__________?
Correct answer: B. nucleus
- A. cytoplasm
- B. nucleus
- C. vacuole
- D. mitochondria
Explanation
The nucleus contains the cell's DNA and regulates gene expression, so it directs growth, metabolism, and reproduction of the cell. Students may choose cytoplasm because many metabolic reactions occur there, but the overall control centre is the nucleus.
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About Animal and Plant Cell
Animal and plant cells share a plasma membrane, cytoplasm, nucleus, ribosomes, mitochondria and endoplasmic reticulum, but plant cells also have a cellulose cell wall, chloroplasts and a large permanent vacuole. Questions cover organelle structure and function, differences between the two cell types, and how membranes control movement of substances.
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