Soalan Sains dan Biologi

What is the main function of red blood cells in the human body?

• Transport oxygen

• Generate energy

• Carry food

What type of pollution occurs when the air is filled with smoke and dust?

• Noise pollution

• Water pollution

• Air pollution

Green plants produce food through the process of photosynthesis. What gas is required for this process?

• Oxygen

• Carbon dioxide

• Hydrogen

Which of the following materials is a good conductor of electricity?

• Glass

• Plastic

• Copper

What part of the microscope needs to be rotated to focus on the object being viewed?

• Objective lens

• Coarse adjustment knob

• Microscope light

What state of water is obtained when ice melts?

• Solid

• Liquid

• Gas

Among the following, which is a renewable energy source?

• Coal

• Sun

• Crude oil

What is the name of the relationship that benefits both organisms in an ecosystem?

• Commensalism

• Symbiosis

• Mutualism

Among the following, which is acidic?

• Soap

• Lemon juice

• Salt water

The planet closest to the Sun is:

• Mars

• Jupiter

• Mercury