FPSC MCQs

Xylem conducts water and dissolved minerals from roots.
It also helps support the plant.

Pasteurization heats food or drink for a specified time.
It improves safety while limiting quality changes.

Many foodborne bacteria grow quickly at warm temperatures.
Prompt refrigeration reduces the risk.

Cells are the smallest units capable of carrying out life processes.
All living organisms consist of one or more cells.

The nucleus contains most of the cell's genetic material.
It directs protein production and cell activities.

Mitochondria produce much of the cell's ATP through respiration.
ATP supplies usable energy for cellular work.

Ribosomes join amino acids according to genetic instructions.
They may be free in the cytoplasm or attached to rough ER.

The cell membrane is selectively permeable.
It regulates exchange between the cell and its environment.

The plant cell wall is mainly made of cellulose.
It supports the cell and helps prevent bursting.

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

Diffusion is driven by random particle motion.
Net movement continues down a concentration gradient.

Osmosis is a special case of water movement across a membrane.
It affects cell volume and water balance.