GAT Subject Biological Sciences MCQs

Monosaccharides are the simplest carbohydrates.
Glucose, fructose, and galactose are examples.

Glucose is oxidized during cellular respiration.
Its energy is transferred to ATP.

Glycogen is stored mainly in liver and muscle.
It can be broken down to release glucose.

Plants store glucose mainly as starch.
It consists of amylose and amylopectin.

Cellulose consists of beta-glucose units.
Humans lack enzymes to digest its beta linkages.

Lipids include fats, phospholipids, steroids, and waxes.
They are hydrophobic or amphipathic.

Both cell types have DNA, ribosomes, and membranes.
Eukaryotes possess a nucleus and membrane-bound organelles.

The nucleoid is not enclosed by a nuclear membrane.
It contains the main bacterial chromosome.

Plasmids often carry accessory genes such as antibiotic resistance.
They can sometimes move between cells.

Different genes are expressed in different cell types.
This creates specialized structures and functions.

As a cell grows, volume increases faster than surface area.
Small size improves transport of nutrients, gases, and wastes.

Water enters the cell and the vacuole expands.
The cell wall prevents bursting and creates turgor pressure.