Diffusion through a Membrane Lab Day 1 Review

Red onion cells undergo the change represented in the diagram below. This change is most likely caused by the cell being transferred from

• distilled water to starch indicator

• distilled water to salt water

• salt water to tap water

• salt water to distilled water

Tags

NGSS.MS-LS1-2

NGSS.MS-LS1-5

The diagram below represents what occurred when an onion cell and a red blood cell were placed in distilled water. The best explanation for why the onion cells do not burst, while red blood cells often do, is that

• the red blood cells have only a cell membrane, which does not protect them from bursting

• the onion cells do not have a cell wall that could protect them from bursting

• the onion cells have a cell membrane, which can protect them from bursting

• the red blood cells have a cell wall, which does not protect them from bursting

Tags

NGSS.MS-LS1-2

Which activity can occur without the use of energy?

• contraction of muscle tissue

• protein synthesis in a cell

• active transport of minerals

• movement of water across a membrane

The process of osmosis would explain the net movement of water into a cell if the percentage of

• water was 90% inside the cell and 95% outside the cell

• protein was 30% inside the cell and 35% outside the cell

• water was 95% inside the cell and 90% outside the cell

• water and protein was equal inside and outside the cell

A student cut a piece of potato into 8 cubes, each measuring 5 millimeters along each side. He placed 7 of them in a beaker containing a salt solution. He removed one cube from the beaker every 10 minutes for a period of 70 minutes, and he determined the average length of two sides. He recorded his results are shown in the data table below.

Which statement explains the change in size of the potato cubes?

• Water left the cube by the process of osmosis.

• Salt left the cube by the process of osmosis.

• Water entered the cube by the process of diffusion.

• Salt entered the cube by the process of diffusion.

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

NGSS.MS-LS2-4

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.

One of the effects of Hurricane Katrina, which devastated New Orleans in 2005, was the death of almost all of the plants in flooded areas. Initially, toxic chemicals and bacteria were suspected as a possible cause. Scientists later determined that the salt concentration in the floodwater caused the plants to die. The death of the plants was most likely due to

• water moving into plant cells from the surrounding environment

• water moving out of plant cells into the surrounding environment

• both water and salt moving from plant cells into the surrounding environment

• both water and salt moving into plant cells from the surrounding environment

Tags

NGSS.HS-LS1-3

NGSS.HS-LS2-3

The diagram below represents two processes that occur in organisms. A characteristic represented by X is common to both of these processes. A characteristic that the two processes have in common is that each process

• uses ATP

• requires enzymes

• uses oxygen

• moves molecules

Tags

NGSS.HS-LS1-7

A photograph of human cells as seen with a compound light microscope is shown below. A cell structure is labeled A. Structure A is most likely a

• mitochondrion that synthesizes food for the cell

• nucleus that is the site of food storage

• mitochondrion that absorbs energy from the Sun

• nucleus that is responsible for the storage of information

The diagram below represents a cell and some molecules in its environment. Which molecule would require the use of energy in order to be brought into the cell?

• 1

• 2

• 3

• 4