Pakistan MCQs

Peptidoglycan forms a strong mesh around bacterial cells.
Its thickness differs between Gram-positive and Gram-negative bacteria.

Diffusion results from random molecular motion.
It continues until concentration differences are reduced.

Peptidoglycan forms a strong mesh around bacterial cells.
Its thickness differs between Gram-positive and Gram-negative bacteria.

Water moves toward the side with higher effective solute concentration.
Osmosis affects cell volume and turgor.

Cytoplasm includes the cytosol and suspended structures.
Many metabolic reactions occur there.

Water moves toward the side with higher effective solute concentration.
Osmosis affects cell volume and turgor.

Cytoplasm includes the cytosol and suspended structures.
Many metabolic reactions occur there.

Water moves toward the side with higher effective solute concentration.
Osmosis affects cell volume and turgor.

Chloroplasts contain chlorophyll and photosynthetic membranes.
They convert light energy into chemical energy.

Cytoplasm includes the cytosol and suspended structures.
Many metabolic reactions occur there.

Channels and carriers help polar or charged substances cross membranes.
No direct energy input is required.

Phospholipids form a bilayer with hydrophilic heads and hydrophobic tails.
Proteins and other molecules are embedded within it.