Living Environment Regents: Cells and Transport

Cellular respiration takes place in the

• nucleus

• cytoplasm

• ribosomes

• mitochondria

What process requires energy?

• active transport

• osmosis

• diffusion

• passive transport

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NGSS.MS-LS1-6

Do all systems work together to keep you in a state of homeostasis?

• True

• False

• Both true and false

• Some work together and some do not

Tags

NGSS.MS-LS1-3

The diagram shows an experimental setup using an artificial plant cell. Molecules A and B are commonly found in plant cells. When tested, it was discovered that molecule A quickly passed through the artificial plant cell membrane. Molecule B did not pass through. The locations of molecules A and B at the beginning of the experiment are shown. Which statement best describes what was observed when the setup was examined 20 minutes later?

• Molecule A remained inside the artificial cell and molecule B remained outside.

• Only molecule A was found both inside and outside the artificial cell.

• Only molecule B was found both inside and outside the artificial cell.

• Both molecules A and B were found inside and outside the artificial cell.

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NGSS.MS-LS1-2

Cell membranes are said to be selectively permeable. Which statement best explains what selectively permeable means?

• The cell membrane prevents any harmful substance from entering the cell.

• The cell membrane lets certain substances enter the cell and keeps certain substances out of the cell.

• The cell membrane allows only large molecules to diffuse into the cell.

• The cell membrane has pores that let only water and glucose into the cell and carbon dioxide out.

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NGSS.MS-LS1-2

The diagram below illustrates the release of chemical A from a human cell in response to a specific stimulus.

Which cell structure plays a direct role in the

release of this chemical from the cell?

• nucleus

• ribosome

• cell membrane

• chloroplast

Tags

NGSS.MS-LS1-2

The diagram below represents the results of the net movement of a specific kind of molecule across a living cell membrane.

The movement of molecules from side A to side B is an example of the process of

• active transport

• chromatography

• cellular respiration

• diffusion

The diagram below represents a laboratory experiment involving sucrose and water molecules in a cellophane bag which functions in the same way as dialysis tubing. Which statement correctly explains the rise of liquid in the tube at the end of the experiment?

• The concentration of sucrose molecules increased as water molecules entered the bag. This concentration

  increase pushed the liquid up the tube.

• Water entered the bag due to the lower concentration of water inside. The extra water pushed the liquid

  up the tube as the bag filled.

• Sucrose indicator entered the bag and reacted with the sucrose molecules. The reaction made the bag

  increase in size and pushed the liquid up the tube.

• Sucrose molecules moved out of the bag and up the tube while water moved out, causing the rise of

  liquid in the tube

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NGSS.MS-LS2-3

The processes of diffusion and active transport

are both used to

• move molecules against a concentration

  gradient, using ATP molecules

• bring molecules into cells when they are

  more concentrated outside of the cell

• move molecules into or out of cells of the

  body

• break down molecules to release energy

Although all of the cells of a plant contain the

same genetic material, root cells and leaf cells are

not identical because they

• select different cells to express

• delete different sections of their enzymes

• use different genetic bases for the synthesis

  of DNA

• use different parts of their genetic instructions

Tags

NGSS.MS-LS1-5