Monday 01/22/24

A student fills a beaker with a 5% salt solution. The student places a dialysis bag containing a 15% salt solution into the beaker. Then the student measures the salinity of the salt solution in the beaker after 5 minutes. The dialysis tubing is permeable to salt and water.

What should go in box A labelled "Water Movement"?

• No movement

• Movement out of Tubing

• Movement Into Tubing

A student fills a beaker with a 5% salt solution. The student places a dialysis bag containing a 15% salt solution into the beaker. Then the student measures the salinity of the salt solution in the beaker after 5 minutes. The dialysis tubing is permeable to salt and water.

What should go in box B labelled "Salt Movement"?

• No movement

• Movement out of Tubing

• Movement Into Tubing

Chief cells are found in the glands that line the inside of the stomach. These cells secrete large amounts of enzymes to aid in food digestion.

Which cellular structure will be more abundant in chief cells because of their high rate of enzyme secretion?

• endoplasmic reticulum

• nuclear envelope

• cytoskeleton

• cell wall

Students investigate how onion cells react to salt (NaCl) solutions of different concentrations. They observe onion cells in three salt solutions under a microscope. The image of an onion cell in a 3% salt solution is shown.

Choose a salt concentration for each of the two onion cell images shown in the table.

b

c

3%

1%

7%