Question

E. Give reasons for the following.
1. Mitochondria is called the power house of the cell.
2. Cell membrane is semipermeable in nature.
3. Nucleus is the brain of the cell.
4. Lysosomes are referred to as the suicide bags.
5. Neurons in human body come with long projections.​

Answer 1

Explanation:

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Answer 2

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1) Mitochondria are known as the powerhouse of the cell because it is responsible for the extracting energy from food through cellular respiration. The energy is released in the form of adenosine triphosphate (ATP) it is an energy currency of the cell.

2) The plasma membrane is called a selectively permeable membrane as it permits the movement of only certain molecules in and out of the cells. ... It allows hydrophobic molecules and small polar molecules diffuse through the lipid layer, but does not allow ions and large polar molecules cannot diffuse through the membrane.

3) The nucleus is called the "brain" of the cell because it holds the information needed to conduct most of the cell's functions. Other molecules make proteins from that information on a regular basis - each moment of our lives.

4) Lysosomes are called suicidal bags of the cells. They contain hydrolytic enzymes. ... This results in the release of those hydrolytic enzymes The released enzymes then digest their own cell and ultimately the cell dies. Hence, they are called as suicidal bags of the cells.

5) An axon, or nerve fiber, is a long slender projection of a nerve cell, or neuron, that conducts electrical impulses away from the neuron's cell body or soma. Axons are in effect the primary transmission lines of the nervous system, and as bundles they help make up nerves

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