$1 \, \mu m$ is equal to:

$(a)$ What would happen to the life of a cell if there was no Golgi apparatus?
$(b)$ Which cell organelle detoxifies poisons and drugs in the liver of vertebrates?

State whether the following statement is true or false:
$RER$ looks smooth under a microscope because it has particles called ribosomes attached to its surface.

$(a)$ Which major invention led to the discovery of the microscopic world?
$(b)$ Name a single cell which may constitute a whole organism. What are they called?
$(c)$ Every multicellular organism has come from a single cell. Justify the statement.

$A$ cell will swell up if

Which of the following is not a function of a vacuole?