AA Natural Sciences

Question 1

What is the basic unit of life?

Accepted Answer

Cell

Answer

The cell is the smallest structural and functional unit of all living organisms.

Question 2

Which planet in our solar system has the most moons?

Accepted Answer

Saturn

Answer

As of recent discoveries, Saturn has over 140 confirmed moons, the most of any planet in our solar system.

Question 3

What process do plants use to convert sunlight into food?

Accepted Answer

Photosynthesis

Answer

Photosynthesis uses sunlight, water, and carbon dioxide to produce glucose and oxygen.

Question 4

What is the chemical formula for water?

Accepted Answer

H₂O

Answer

Water consists of two hydrogen atoms bonded to one oxygen atom, giving the formula H₂O.

Question 5

Which gas makes up the largest percentage of Earth's atmosphere?

Accepted Answer

Nitrogen

Answer

Nitrogen makes up approximately 78% of Earth's atmosphere, far more than oxygen at about 21%.

AA - Associate of Arts Practice Test