Regents Cells

Molecule A cannot diffuse. What is a possible reason why?

• Molecule A is a macromolecule and it is too large to move.

• Molecule A is a building block and it is too large to move.

• Molecule A is a building block and it is too small to move.

• Molecule A is a macromole and it is too small to move.

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NGSS.MS-LS1-2

Which choice accurately describes what happened in steps A and B?

• Step A added saltwater so the water diffused out. Step B added freshwater so water diffused in.

• Step A added saltwater so the water diffused in. Step B added freshwater so water diffused out.

• Step A added freshwater so the water diffused in. Step B added saltwater so water diffused out.

• Step A added freshwater so the water diffused out. Step B added saltwater so water diffused in.

The diagram below shows specialized plant cells that control openings called stomates. The proper function of these cells is vital to the survival of the plant because they regulate the

• rate of glucose use by root cells

• absorption of sunlight by leaf cells

• products of photosynthesis in the stem

• exchange of gases in leaves

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NGSS.MS-LS1-5

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Which of the following molecules started IN the "cell" in the state lab?

• starch, glucose, and iodine

• starch and glucose

• starch and iodine

• glucose, iodine, and salt

Tags

NGSS.MS-PS1-2

Which of the following explains why starch is not permeable to the cell membrane?

• It is too large and complex.

• It is negatively charged.

• It is a waste product.

• The concentration is always lower outside the cell.

Which molecule is in equilibrium (equally concentrated inside and outside of the cell)?

• A

• B

• C

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NGSS.MS-PS1-5

Where is B most likely to diffuse and why?

• Out of the cell, b/c there is a higher conc. inside.

• Into the the cell, b/c there is a higher conc. inside.

• Into the the cell, b/c there is a lower conc. outside.

• Out of the cell, b/c there is a lower conc. inside.

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NGSS.MS-LS2-3

Active transport would be required to transport molecule B

• Into the cell

• Out of the cell

When is active transport used by a cell?

• When the cell wants to maintain a high or low concentration.

• When the cell becomes highly concentrated with water

• In a salt water environment

• In a distilled water environment

Which of the following does NOT describe the cell membrane?

• It is selectively permeable

• It is responsible for waste removal

• Gases are exchanged here

• It contains receptor molecules to receive messages

• It is only found in plant cells

Tags

NGSS.MS-LS1-2