Why endoplasmic reticulum is called as transporting channels of the cell ?
Q.1. Why endoplasmic reticulum is called as transporting channels of the cell ?
Ans. Because it serves as channels for the transport of materials (especially proteins) between various regions of the cytoplasm or between the cytoplasm and the nucleus.
Q.2. Name the processes by which CO₂ and H₂O move into and out of the cell.
Ans. By diffusion and osmosis.
Q.3. Name the plastid which stores starch, oils and protein granules.
Ans. Leucoplast.
Q.4. What is lacking in a virus which makes it dependent on a living cell to multiply?
Ans. Membranes or membrane-bound organelles.
Q.5. State the function of chromosome in a cell.
Ans. Chromosome is the carrier of genetic information.
Q.6. Name the cell organelle which you would associate with elimination of old and worn out cells.
Ans. Lysosomes.
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