$1 \mu m$ is equal to:

What are chromoplasts and leucoplasts? Give an example of chromoplasts which contains green pigment.

Which cell organelle plays a crucial role in detoxifying many poisons and drugs in a cell?

Silver nitrate solution is used to study which of the following cell organelles?

Which part of the cell is called the brain of the cell?

$(a)$ What are the consequences of the following conditions?
$(i)$ $A$ cell having higher water concentration than the surrounding medium.
$(ii)$ $A$ cell having lower water concentration than the surrounding medium.
$(iii)$ $A$ cell having equal water concentration to its surrounding medium.
$(b)$ Name the materials of which the cell membrane and cell wall are composed.