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Use the chart to answer the question.
A laboratory technician places red blood cells into three (3) different solutions. Observations are recorded each minute for five minutes.
Which of the following best explains what is causing the red blood cells in solution 1 to change size over the 5-minute period?
Water is moving into the cell from its environment
Water is moving out of the cell to the surrounding environment
Water is moving in and out of the cell in equal rates
Solutes are moving into the cell from its environment
Oxygen and carbon dioxide molecules pass freely through cell membranes Which factor determines the direction most molecules will pass through the cell membrane?
The ionic charge on the outer shell of the gas molecules.
The concentration of the gas molecules on each side of the membrane.
The strength of the covalent bonds holding the gas atoms in the molecules.
The size of the gas molecules.
Use the diagram to answer the question. The diagram illustrates how plant root cells take in mineral ions from the surrounding soil. Which of the following processes is illustrated?
Use the diagram to answer the question. Which of the illustrations BEST represents the net movement of molecules in osmosis?
Use the table to answer the question. The table lists the concentrations of water inside and outside a cell under four (4) different conditions. Under which condition will the cell experience a net loss of water to its environment?
Which of the following would a cell MOST likely use to move materials by active transport?
A channel protein
A market protein
A transfer RNA molecule
The diffusion of a substance into our out of a cell requires
A concentration gradient.
An active transport system.
A carrier molecule.
A functioning mitochondrion.
Which of these is the process by which water moves across a selectively permeable membrane?
Which of the following substances can most easily travel into and out of the cell?
Use the diagram to answer the question. The diagram is showing the process of
Placing wilted lettuce in cold water will make it crisp again (see picture). Which statement best describes what happens to restore the lettuce to its original condition?
Water left the lettuce cells by diffusion.
Water entered the cells of the lettuce by osmosis.
Osmosis caused salts to enter the lettuce cells.
Salts in the leaf caused water to leave the cells.
Which cell process will move substances against a concentration gradient?
How is the cell membrane important to the process of osmosis?
It allows water to move into the cell.
It allows all materials from the outside environments to move into the cell.
It traps water and nutrients that would otherwise be unable to move into the cell.
It collects nutrients from water in the outside environment and moves them into the cell.
What is the function of the selectively permeable plasma membrane?
To store chemical and heat energy inside the cell.
To control the movement of substances into and out of the cell.
To control the movement of red blood cells.
To all everything to move into the cell
Molecules can cross cell membranes from areas of low concentration to areas of high concentration by binding with carrier proteins. What is this process called?