General Science

Carbon is an element essential to all living things on Earth. Which best describes how carbon is transported in a food chain?

• Animals that eat plants consume carbon the plants took from the air.

• Carbon that is consumed by plants can never be consumed by an animal.

• Humans can consume carbon directly from the atmosphere.

• Plants consume sugars made of carbon found in the environment.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Karla is explaining cell theory to Jean. Which statement should Karla make?

• All cells are made of smaller cells.

• All cells are the same size.

• All cells come from existing cells.

• All cells have the same parts.

A fruit fly has the recessive trait of short wings. It is crossed with a fly, which is homozygous for the dominant allele of the gene and has the dominant trait of medium length wings.

What percentage of the offspring of this cross will most likely have the recessive trait of short wings?

• 0%

• 25%

• 50%

• 100%

A freshwater marsh is a type of ecosystem. Grasses, fish, wading birds, frogs, and alligators live together in freshwater marshes. Pieces of decaying material sink to the bottom of the marsh. In which places can carbon be found in the marsh?

• In living things and decaying materials only.

• In living things only.

• In the atmosphere and water only.

• In the atmosphere, water, living things, and decaying materials.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

What is the function of the nucleus of the cell?

• To hold the cell's cell membrane

• To hold the cell's cytoplasm

• To hold the cell's DNA

• To hold the cell's organelles

Tags

NGSS.MS-LS1-2

Kevin is building a physical model of an animal cell. Which structure should Kevin not include in his model?

• cell membrane

• chloroplasts

• cytoplasm

• mitochondria

Tags

NGSS.MS-LS1-2

Look at the diagram of the human body system.

Which best describes the role that this system plays in supporting the human body?

• It delivers oxygen and nutrients to cells.

• It eliminates waste from the body.

• It provides structural support.

• It transmit electrical messages.

Tags

NGSS.MS-LS1-3

Examine the Punnet Square below.

Which identifies the alleles of the parents shown here?

• BB and BB

• BB and Bb

• Bb and Bb

• Bb and bb

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NGSS.HS-LS3-1

The Linnaean system of classification is used to group animals together based on how closely related scientists think organisms are. Which describes the most closely related organisms?

• Corals and jellyfish are in the same phylum.

• Lemurs and koala bears are in the same class.

• Seahorses and sea stars are in the same kingdom.

• Timberwolves and Bengal tigers are in the same order.

Gloria is comparing anatomical features of several organisms. She makes a diagram to show some similar characteristics that she observes.

Which best describes what Gloria's observations are evidence for?

• All organisms share a common ancestor.

• All organisms share a common lifestyle.

• All of the organisms share the same DNA.

• All of the organisms share the same habitat.

Tags

NGSS.MS-LS4-2