Question

1. What happens when iron nails are placed in copper sulphate solution?
2. The handle of a cricket bat or badminton racquet is usually rough. Explain the reason.
3. State the difference between eukaryotes and prokaryotes.​

Answer 1

Answer:

1. When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

2. The handle of a cricket bat or a badminton racquet is rough, so that while playing, the bat or badminton racquet does not slip away from the hands of the player. Roughness is responsible for the frictional force between handle of the bat or a badminton racquet and hands, without which gripping is not possible.

3. The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information

Answer 2

1 .. When an iron nail is dipped in copper sulphate solution, a brown coating of copper is formed on the surface of iron and the colour of copper sulphate solution changes from blue to light green.

2 ..The handle of a cricket bat or a badminton racquet is rough, so that while playing, the bat or badminton racquet does not slip away from the hands of the player. Roughness is responsible for the frictional force between handle of the bat or a badminton racquet and'hands, without which gripping is not possible.

3..1. Eukaryotic cells contains membrane bounded organelles, such as the nucleus, while prokaryotic cells do not.  

2. Prokaryotes are also known as the primitive life forms as they arrived earlier than the eukaryotes during the course of evolution.  

3. Eukaryotes are multicellular and prokaryotes are unicellular.  

4. Ribosomes are smaller in prokaryotes and larger in eukaryotes.  

5. Prokaryotes lacks 'true nucleus', whereas eukaryotes possess nucleus as well as nuclear membrane.