Lecture 7- Knowt

The process by which plants make their own food using sunlight is called ________.

photosynthesis.

The largest planet in our solar system is ________.

Jupiter.

In the water cycle, the phase where water vapor cools and turns into liquid water is known as ________.

condensation.

The three states of matter are solid, liquid, and ________.

gas.

The primary organ responsible for pumping blood throughout the body is the ________.

heart.

The basic unit of life is called a ________.

cell.

The scientific study of the behavior and properties of matter is known as ________.

chemistry.

The force that attracts objects toward the center of the Earth is called ________.

gravity.

The smallest continent by land area is ________.

Australia.

The natural satellite that orbits the Earth is known as the ________.

Moon.

What is the chemical formula for water?

H2O.

What organelle is known as the powerhouse of the cell?

Mitochondria.

What is the longest river in the world?

Amazon River.

What is the primary gas found in Earth's atmosphere?

Nitrogen.

Which planet is known as the Red Planet?

Mars.

What is the process by which living organisms produce energy from food?

Cellular respiration.

What is the most abundant element in the universe?

Hydrogen.

What is the speed of light in a vacuum?

Approximately 299,792 kilometers per second.

What is the main system used for classifying living organisms?

The Linnaean taxonomy.

What is the main benefit of vaccination?

To provide immunity against specific diseases.

The process by which water vapor becomes liquid water is called ________.

condensation.

The longest bone in the human body is the ________.

femur.

The powerhouse of the cell is known as the ________.

mitochondria.

The smallest unit of an element is called an ________.

atom.

The chemical symbol for gold is ________.

Au.

The boiling point of water at sea level is ________ degrees Celsius.

100.

The basic structural and functional unit of all living organisms is the ________.

cell.

The human body has ________ pairs of ribs.

12.

The most abundant gas in the Earth's atmosphere is ________.

nitrogen.

The main organ of the circulatory system is the ________.

heart.

What is the process of plants releasing water vapor called?

Transpiration.

What is the chemical formula for carbon dioxide?

CO2.

What organ in the human body is responsible for detoxifying chemicals?

Liver.

What mineral is essential for strong bones and teeth?

Calcium.

What is the powerhouse organelle of a plant cell?

Chloroplast.

What is the primary function of red blood cells?

To carry oxygen.

What is the largest organ in the human body?

Skin.

What type of bond involves the sharing of electron pairs between atoms?

Covalent bond.

What is the primary component of the cell membrane?

Phospholipids.

What form of energy is stored in the nucleus of an atom?

Nuclear energy.