A & P 3rd Six Weeks Exam - 17 Dec 24

Front

What are the three base units of the metric system?

Back

The three base units of the metric system are meter (length), kilogram (mass), and second (time).

Front

True or False: Melanin protects the body from ultraviolet rays.

Back

True. Melanin is a pigment that absorbs UV radiation and protects the skin from damage.

Front

What is the purpose of the metric system in scientific measurements?

Back

The metric system provides a standardized way to measure and communicate quantities, making it easier to share and compare data.

Front

Define 'pigment' in biological terms.

Back

A pigment is a substance that gives color to tissues and organisms, often playing a role in processes like photosynthesis and protection from UV light.

Front

What is the significance of the metric system in global science?

Back

The metric system is used internationally, allowing scientists from different countries to collaborate and share research without confusion over measurement units.

Front

True or False: The metric system is only used in science.

Back

False. The metric system is used in various fields, including medicine, engineering, and everyday life.

Front

What is the role of melanin in the skin?

Back

Melanin provides pigmentation to the skin and protects it from UV radiation, reducing the risk of skin damage and cancer.

Front

List two advantages of using the metric system over other measurement systems.

Back

1. Simplicity: The metric system is based on powers of ten, making calculations easier. 2. Universality: It is used worldwide, facilitating international communication and trade.

Front

What is the relationship between wavelength and energy in electromagnetic radiation?

Back

The energy of electromagnetic radiation is inversely proportional to its wavelength; shorter wavelengths have higher energy.

Front

Define 'ultraviolet (UV) radiation'.

Back

Ultraviolet radiation is a type of electromagnetic radiation with a wavelength shorter than visible light, which can cause skin damage and increase the risk of skin cancer.