Cell Transport

Front

Identify substance A. Options: Salt, Glucose, Water, Iodine

Back

Water

Front

Identify one likely substance in the environment of the cell that caused this response. Options: Salt Water, Fresh Water, Distilled Water, Pond Water

Back

Salt Water

Front

Methods A & B are classified as passive transport because they do not require:

Back

ATP

Front

Why does the movement of molecules in Method C represent active transport?

Back

The molecules are moving from low to high concentration.

Front

The process used to remove the excess water from the paramecium by the contractile vacuole is:

Synthesis

,

Digestion

,

Active Transport

,

Passive Transport

Back

Active Transport

Front

The student predicted that the contractile vacuole would contract fewer times in one minute in a solution that had a higher concentration of salt than that found in typical pond water. Why is this prediction correct?

Back

Correct, because water would be moving out of the cell into the salt solution

Front

If the concentration of sodium is greater outside a cell than inside the cell, which process could move sodium out of the cell? Options: Diffusion, Carbohydrate synthesis, Active transport, Digestion

Back

Active transport

Front

Red onion cells undergo the change represented in the diagram shown. 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.

Back

Distilled water to salt water

Front

The diagram represents a laboratory technique. What is one reason why a student would use this technique during a scientific investigation? Options:

To add cells to a slide

, To fix the coverslip, To remove stain from the slide, To add salt water to the slide

Back

To add salt water to the slide

Front

Which statement is best supported by the diagram?

Back

The protein molecules are too large to diffuse out of the cell.