7th TN Benchmark practice

The diagram shows a single-celled organism moving on a surface. The dotted line in the diagram shows the previous form of the organism as it moves. Which characteristic of the cytoplasm is shown by the single-celled organism?

• The cytoplasm can remove wastes from the single-celled organism and is able to change the cell shape.

• The cytoplasm can store nutrients in the single-celled organism but needs other organelles to break down the nutrients.

• The cytoplasm can release energy in the single-celled organism and responds to changes in the environment.

• The cytoplasm can move within the single-celled organism but is contained by the cell membrane.

Tags

NGSS.MS-LS1-1

NGSS.MS-LS1-2

The opening and closing of the stoma play a significant role in maintaining homeostasis within plant leaves. When a stoma is open, excess water can leave the plant by evaporation. When the stoma is closed, the plant reduces water loss. Based on the diagram, a student claims that passive transport helps maintain homeostasis in plants. Is the claim made by the student correct, and why?

• Yes. Potassium ions and water molecules can flow in both directions.

• Yes. Water molecules move from areas of higher concentration to lower concentration.

• No. Potassium ions move from a lower concentration to a higher concentration.

• No. The flow of potassium ions and water molecules is based on outside temperature.

Tags

NGSS.HS-LS1-3

What happens to calcium carbonate after it is heated?

• A new pure substance is formed that cannot be separated by physical means.

• Atoms in the original substance are changed into different atoms to form new substances.

• A new mixture is formed that cannot be separated by physical means.

• Atoms in the original substance are rearranged to form new substances.

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Why is the mass of the products lower than the mass of the reactant?

• One of the products is a gas that escaped into the air and could not be measured easily.

• The reaction does not follow the Law of Conservation of Mass.

• The mass of solids does not contribute to the mass of the products in a chemical reaction.

• Matter is destroyed during the chemical reaction.

Tags

NGSS.MS-PS1-5

Which statement correctly explains the difference between elemental and compound molecules?

• Elemental molecules are always composed of two or more types of atoms, while compound molecules are always composed of a single type of atom.

• Elemental molecules are always composed of a single type of atom, while compound molecules are always composed of two or more types of atoms.

• Elemental molecules are always composed of three or more types of atoms, while compound molecules are always composed of a single type of atom.

• Elemental molecules are always composed of a single type of atom, while compound molecules are always composed of three or more types of atoms.

Tags

NGSS.MS-PS1-1

The leaves of the mimosa plant fold, and the branches droop when the plant is touched. The leaves and branches perform this action due to the passive transport of water from their cells.

• The cells swell as water moves out of them, making the branches droop.

• The cells swell as water moves into them, making the branches droop.

• The cells shrink as water moves out of them, making the branches droop.

• The cells shrink as water moves into them, making the branches droop.

Tags

NGSS.MS-LS1-5

Use the information to answer questions 7-10. Describe how the cell membrane of both organisms functions during passive transport.

Tags

NGSS.MS-LS1-2

Which of the following substances can pass through the cell membrane by passive transport?

• Sugar

• Water

• Oxygen

• Carbon dioxide

Tags

NGSS.MS-LS1-2

What is the role of the cell membrane in both organisms as described in the passage?

• To produce nutrients

• To protect the nucleus

• To control the movement of substances in and out of the cell

• To generate energy

Tags

NGSS.MS-LS1-2

Which organelle is present in Organism 1 but not in Organism 2?

• Nucleus

• Vacuole

• Large chloroplast

• Cell wall