NET Biology MCQs

Dehydration reactions join monomers into larger molecules.
A water molecule is released during bond formation.

Hydrolysis separates polymers into smaller units.
Water contributes H and OH to the products.

Carbohydrates include sugars, starches, glycogen, and cellulose.
They serve both energy and structural roles.

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

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

Prokaryotes lack a membrane-bound nucleus.
Their DNA is located in a nucleoid region.

Cellulose microfibrils provide strength to plant cell walls.
The wall supports and protects the cell.

Water moves out toward the higher solute concentration.
The cell undergoes crenation.

Fungal cell walls contain chitin and other polysaccharides.
Chitin is also found in arthropod exoskeletons.

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

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

Plasmolysis occurs in a hypertonic environment.
The vacuole shrinks and the membrane pulls inward.