C++ | MCQs

Explanation

Endocytosis is the process by which cells engulf bulk material from their external environment by forming a vesicle around it.

This is a key mechanism for taking in large molecules or particles that cannot pass through the cell membrane by diffusion.

Explanation

Interferon is a type of protein produced by the body's immune system in response to viruses.

It helps activate immune cells and inhibit viral replication.

It playing a key role in antiviral defenses.

Explanation

If the ozone layer disappears, ultraviolet (UV) rays from the sun will reach the Earth's surface in higher amounts.

It leading to increased risks of skin cancer, cataracts, and harmful effects on ecosystems and wildlife.

Explanation

The peptidoglycan cell wall is a unique and defining feature of bacteria.

It provides structural support and protection, helping bacteria maintain their shape.

Peptidoglycan is not found in amoeba, protozoa, or viruses, as these organisms have different structural components.

Explanation

Bone marrow is the soft tissue found inside the cavities of bones.

It responsible for producing red blood cells (RBCs), white blood cells (WBCs), and platelets.

Explanation

The depletion of the ozone layer is primarily caused by the release of chlorofluorocarbons (CFCs).

It break down ozone molecules, reducing the protective layer that shields the Earth from harmful UV radiation.

Explanation

The order of a reaction can be fractional, whereas molecularity (the number of molecules involved in the reaction)

It is always a whole number and cannot be fractional

Explanation

Cilia and flagella have a characteristic "9+2" arrangement of microtubules: nine outer pairs and two central single tubules.

Explanation

"Carnivore" refers to an animal that primarily eats flesh.

Herbivores, which eat plants.

Omnivores, which eat both plants and meat.

Explanation

The main artery leaving the left ventricle of the heart is called the aorta.

It carries oxygenated blood from the heart to the rest of the body.