Science

What are unicellular organisms?

Organisms consisting of a single cell, like bacteria, amebas, and yeasts.

What are multicellular organisms?

Organisms made up of multiple cells, such as humans, trees, and animals.

Define Kinetic Energy.

Energy of motion, for example, moving muscles during contraction.

Define Potential Energy.

Stored energy based on position, e.g., energy stored in food molecules.

What is Chemical Energy?

Energy stored in bonds of chemical compounds, released during reactions.

What is Thermal Energy?

Energy related to temperature, affecting molecular movement.

What is Electrical Energy?

Energy due to the movement of electrons, important in nerve impulses.

What are the parts of the digestive system?

Mouth, Oesophagus, Stomach, Small Intestine, Large Intestine, Liver, Pancreas.

What are the functions of the Nervous System?

Transmits signals between body parts, processes information, and coordinates responses.

What are the main parts of the Circulatory System?

Heart, Blood Vessels (Arteries, Veins, Capillaries), Blood.

What does the respiratory system do?

Facilitates gas exchange (oxygen in, carbon dioxide out).

What are the parts of the Excretory System?

Kidneys, Ureters, Bladder, Urethra.

What type of blood cell carries oxygen?

Red Blood Cells (Erythrocytes).

What is the function of White Blood Cells?

Part of the immune system, they fight infections.

What do platelets do?

Help in blood clotting to prevent excessive bleeding after injury.

What do arteries do?

Carry oxygenated blood away from the heart.

What are the components of the Kidney?

Nephrons, renal cortex, renal medulla.

What is the function of the Liver?

Detoxifies chemicals, metabolizes drugs, and produces bile.

What is the structure of the heart?

Composed of four chambers: right atrium, right ventricle, left atrium, left ventricle.

What is filtration?

Separates an insoluble solid from a liquid using filter paper.

What is decantation?

Separates a liquid from a settled solid by pouring off the liquid.

What is evaporation?

Heats a solution to remove the liquid, leaving the dissolved solid behind.

What is crystallisation?

Forms solid crystals from a concentrated solution as it cools or evaporates.

What is distillation?

Separates liquids or recovers a solvent using differences in boiling points.

What is fractional distillation?

Separates miscible liquids with different boiling points using a fractionating column.

What is a separating funnel?

A device that separates immiscible liquids based on their different densities.

What is centrifugation?

Spins a mixture rapidly to separate substances based on density.

What is chromatography?

Separates dissolved substances based on how differently they move through a material.

What is sieving?

Separates solids based on particle size using a mesh.