NC Biology Standards

Use the diagram to answer the question. The diagram is showing the process of

• Osmosis

• Active Transport

• Phagocytosis

• Exocytosis

Placing wilted lettuce in cold water will make it crisp again (see picture). Which statement best describes what happens to restore the lettuce to its original condition?

• Water left the lettuce cells by diffusion.

• Water entered the cells of the lettuce by osmosis.

• Osmosis caused salts to enter the lettuce cells.

• Salts in the leaf caused water to leave the cells.

Tags

NGSS.MS-LS1-2

Oxygen and carbon dioxide molecules pass freely through cell membranes Which factor determines the direction most molecules will pass through the cell membrane?

• The ionic charge on the outer shell of the gas molecules.

• The concentration of the gas molecules on each side of the membrane.

• The strength of the covalent bonds holding the gas atoms in the molecules.

• The size of the gas molecules.

Use the table to answer the question. The table lists the concentrations of water inside and outside a cell under four (4) different conditions. Under which condition will the cell experience a net loss of water to its environment?

• Condition 1

• Condition 2

• Condition 3

• Condition 4

Tags

NGSS.MS-LS1-2

NGSS.MS-LS2-1

Which of the following would a cell MOST likely use to move materials by active transport?

• A channel protein

• A market protein

• A phospholipid

• A transfer RNA molecule

The diffusion of a substance into our out of a cell requires

• A concentration gradient.

• An active transport system.

• A carrier molecule.

• A functioning mitochondrion.

Which of the following substances can most easily travel into and out of the cell?

• Sodium ions

• Potassium ions

• Water

• Glucose

Which cell process will move substances against a concentration gradient?

• Diffusion

• Facilitated Diffusion

• Osmosis

• Active Transport

How is the cell membrane important to the process of osmosis?

• It allows water to move into the cell.

• It allows all materials from the outside environments to move into the cell.

• It traps water and nutrients that would otherwise be unable to move into the cell.

• It collects nutrients from water in the outside environment and moves them into the cell.

Tags

NGSS.MS-LS1-2

Which of the following best describes the role of chlorophyll in photosynthesis?

• A) It absorbs light energy for use in photosynthesis.

• B) It transports water throughout the plant.

• C) It provides structural support to the plant cells.

• D) It stores glucose produced during photosynthesis.

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3