Regents Review

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

Which of the following is NOT an organic molecule?

• Starch

• DNA

• Glucose

• Water

Which of the following is LEAST likely to be permeable to the cell membrane?

• Water

• Oxygen

• Carbon dioxide

• Glucose

• Protein

Which of the following explains why plant cells are less likely to burst in distilled water?

• Plant contain a cell wall for support and structure

• Plant cells are unable to perform osmosis.

• Plant cells contain vacuoles and chloroplasts

• Plant cells have a rigid cell membrane and a square shape.

Tags

NGSS.MS-LS1-2

Explain why the bag shriveled in the beaker with 80% water and 20% starch.

• Water moved from high to low concentration.

• Water moved from low to high concentration.

• Starch moved from high to low concentration.

• Starch moved from low to high concentration.

Tags

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

Students did an experiment comparing the activity of four different enzymes, A, B, C, and D. The results are represented in the graph below. A valid conclusion based on the information in the graph is that

• the pH of some enzymes changes as the temperature changes

• enzymes change color in proportion to the rate of activity

• a difference in the pH of an environment changes enzyme activity

• enzyme activity causes acids to change into bases over time

Tags

NGSS.MS-PS1-2

Which statement describes a failure of homeostasis in humans?

• When activity in an individual increases, the body temperature rises and the individual sweats.

• As the concentration of carbon dioxide increases in the human body, the lungs begin to expel more carbon dioxide.

• A viral infection leads to a decrease in the number of white blood cells being produced in the body.

• After an individual gets a cut, certain chemical changes begin the healing process.

Tags

NGSS.HS-LS1-3

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

Tags

NGSS.MS-LS2-3

Substance X directly supplies energy for various life functions, as shown in the diagram below. Which substance is represented by X in the diagram?

• ATP

• DNA

• starch

• glucose

Tags

NGSS.MS-LS1-3