Explanation

Glycoproteins are formed when proteins attach to carbohydrate chains.

They play key roles in cell recognition, signaling, and immune response.

Explanation

One Acetyl CoA oxidation in the Krebs cycle produces 3 NADH molecules.

These NADH carry high-energy electrons to the electron transport chain for ATP production.

Explanation

Cellular respiration breaks down glucose and other food molecules to release energy as ATP.

It occurs mainly in the mitochondria of cells.

Explanation

During ventricular systole, these valves close to prevent blood from flowing back into the atria.

This ensures blood moves forward into the pulmonary artery and aorta.

Explanation

A non-competitive inhibitor binds to an allosteric site, not the active site.

This changes the enzyme’s shape, reducing its activity regardless of substrate concentration.

Explanation

Hemophilia is an X-linked recessive disorder; sons receive their X chromosome from the mother.

Since the mother is non-carrier, all sons get a normal X and cannot inherit hemophilia.

Explanation

Explanation

Lamarck is remembered for proposing that acquired traits can be inherited by offspring.

Though later rejected, his idea influenced early evolutionary thought before Darwin’s theory.

Explanation

Sensory neurons carry impulses from receptors (like skin or eyes) to the central nervous system.

They help the brain detect and respond to external and internal stimuli.

Explanation

Guanine and cytosine are joined by three hydrogen bonds, while adenine and thymine have only two.

These extra bonds make G–C rich regions more stable and harder to separate.