Q1. Give the significance of the following terms associated with these cell organelles- a. Mitochondria as power house of the cell b. Lysosomes as suicidal bags c. ATP as energy currency d. Vacuoles as storage sacs
Answers
Answer:
Facts that Matter
• The smallest functional unit of life is cell, discovered by Robert Hooke in 1665. A cell can independently perform all necessary activities to sustain life. Hence cell is the basic unit of life. There are two types of cells → plant cell and animal cell. The different cell organelles and their functions are as follows:
1. Plasma/Cell membrane: This is the outermost covering of the cell that separates the contents of the cell from its external environment. The plasma membrane allows or permits the entry and exit of some materials in and out of the cell so the cell membrane is called a selectively permeable membrane. Some substances like CO2 or O2 gases can move across the cell membrane by a process called diffusion. The movement of water molecules (liquid) through such a selectively permeable membrane is called osmosis. Osmosis is the passage ot water from a region of high water concentration through a semi-permeable membrane to a region of low water concentration. If the medium surrounding the cell has a higher water concentration than the cell, the cell will gain water by osmosis. Such a solution is known as hypotonic solution.
If the medium has exactly the same water concentration as the cell, there will be no net movement of water across the cell membrane. Such a solution is known as isotonic solution. If the medium has a lower water concentration then the cell will lose water by osmosis. Such a solution is known as hypertonic solution.
Answer:
a) mitochondria stores energy as it provides to many cells
so it is called power house of cell.
b) they are called suicidal bags they are capable in destroying themselves.
c) these provides energy for various biochemical activities.
d) as they are mostly found in plant cell.
and plant use it to store water or other substances