Answer:
1st question: i thinks its false
2nd: false
3rd: A and D im pretty sure
Explanation:
Lysosomes are membrane bounded organelles found in animal and plant cells. They vary in shape, size and number per cell and appear to operate with slight differences in cells of yeast, higher plants and mammals. Lysosomes contribute to a dismantling and re-cycling facility.
hope this helped! :D
Answer: Mammalian red blood cells have a biconcave (doughnut-like) shape. If red blood cells are placed in a 0.3 M NaCl solution, there is little net osmotic movement of water, the size and shape of the cells stay the same; the NaCl solution is isotonic to the cell. If red blood cells are placed in a solution with a lower solute concentration than is found in the cells, water moves into the cells by osmosis, causing the cells to swell; such a solution is hypotonic to the cells. When red blood cells are placed in pure water, water rapidly enters the cells by osmosis and causes the cells to burst, a phenomenon known as hemolysis. If the red blood cells are placed in a solution with a higher solute concentration, water moves out of the cell by osmosis, the cell becomes smaller and crenated in shape; such a solution is hypertonic to the cells.
I'm pretty sure it's the cell membrane.
2) Heat
Only heat can be transferred from one object to another object by the means of conduction , convection and radiation .Even if the energy is being transferred by kinetic energy that is also in the form of heat .This can simply be understood by taking the example of two balls say one ball is stationary and other one is moving ,the particles inside the moving ball is having high kinetic energy as compared to that of stationary and when the both the balls colloid the energy is transferred in the form of heat and the other ball which was at stationary starts moving .
So,ultimately heat is transferred between objects.
What is the primary cellular site for the production of polypeptide chains? Ribosomes
