The $GERL$ system was proposed by:

Choose the correct pair:

Identify the labels $A, B, C, D$ and $E$ in the given diagram. The following components are listed:
$(i)$ $SER$
$(ii)$ Ribosome
$(iii)$ Nucleus
$(iv)$ Nuclear pore
$(v)$ $RER$

Consider the following statements and choose the correct statement.
$(i)$ The endomembrane system includes mitochondria,chloroplast and peroxisomes.
$(ii)$ Smooth endoplasmic reticulum is the major site for synthesis of lipid.
$(iii)$ Rough endoplasmic reticulum is actively involved in protein synthesis.
$(iv)$ Mitochondrial matrix possesses single circular $DNA$,a few $RNA$ and $80\; S$ ribosomes.
Which of the above statements are correct?

Describe the difference between plant cell and animal cell with a diagram.

$A$ student wants to study cell structure using a light microscope with a $10 \times$ eyepiece and a $45 \times$ objective lens. Which of the following light sources should they use to obtain the best resolution?