Quiz 1

How do cells build or break molecules?

• Through metabolic pathways involving enzymes

• By using external mechanical forces

• By absorbing molecules directly from the environment

• Through random chemical reactions without any regulation

Tags

NGSS.HS-LS1-6

What regulates these reactions in cells?

• Enzymes

• Water

• Oxygen

• Carbon dioxide

Tags

NGSS.MS-LS1-6

NGSS.MS-LS1-7

Which of the following statements is true?

• Anabolic reactions break down molecules and release energy.

• Catabolic reactions build molecules and require energy.

• Anabolic reactions build molecules and require energy.

• Catabolic reactions build molecules and require energy.

Tags

NGSS.MS-LS1-7

Jan Baptist van Helmont debunked the idea that plants get their mass from which of the following sources?

• Soil

• Water

• Air

• Sunlight

Tags

NGSS.MS-LS1-6

Which of the following concepts did Jan Baptist van Helmont debunk?

• A) Plants eat soil to grow

• B) Plants need sunlight to grow

• C) Plants require water to grow

• D) Plants grow in the dark

Photosynthesis occurs in which part of the plant?

• Roots

• Stem

• Leaves

• Flowers

Tags

NGSS.MS-LS1-6

True or False: Photosynthesis is the source of all the oxygen that we breathe.

• True

• False

Tags

NGSS.MS-LS1-6

What were the first organisms to evolve the biochemical machinery for photosynthesis in which oxygen is produced as a by-product?

• Algae

• Cyanobacteria

• Plants

• Fungi

Tags

NGSS.MS-LS1-6

Where does photosynthesis occur most commonly?

Tags

NGSS.MS-LS1-6

Approximately what fraction of global photosynthesis is carried out on land?