Explanation

• Conductors are materials that allow electricity to flow through them, such as copper, aluminum, and gold.
• They have a high concentration of free electrons, which are able to move freely within the material, carrying electrical charge with them.
• Materials that do not allow electricity to pass through them are called insulators.
  

Explanation

Peristalsis is a wave of rhythmic movements of muscle contraction and relaxation that helps move substances through a tubular structure, like the digestive tract.

It's a vital process that facilitates the transport of food, water, and waste products through the digestive system.

Explanation

Enzymes lower the activation energy, allowing the reaction to proceed faster and more efficiently.

This enables the reaction to occur with less energy input, making it more feasible and rapid.

Explanation

Electron microscopes produce higher-resolution images due to the shorter wavelength of electrons compared to visible light.

This enables them to reveal smaller details and structures that are not visible with light microscopes.

Explanation

The magnification of a light microscope is formed by a combination of the eyepiece and objective lens.

The objective lens collects and magnifies light from the sample.

It is then further magnified by the eyepiece, producing the final magnification.

Explanation

A ratio is a comparison of two values, often expressed as a fraction or a decimal.

It shows the relative size or quantity of one value in relation to another.

For example: A ratio of 3:4 (or 3/4) compares two values, 3 and 4.

Explanation

Resistance is the property of a material or object that opposes the flow of electric charge (current) through it.

It is measured in ohms (Ω) and depends on the material, length, and cross-sectional area of the object.

Explanation

Ginger has rhizomes, which are horizontal underground stems that can give rise to new plants, allowing it to propagate vegetatively.

Explanation

Sexual reproduction is the type of reproduction that involves the fusion of gametes (sperm and egg cells) to produce offspring with a unique combination of genetic traits.

This process introduces genetic variation, which is essential for evolution to occur.

Explanation

The skeleton is the framework that gives shape to the human body and provides support, protection, and movement.

It consists of bones, cartilage, and ligaments that work together to form a structural system.