Question

a student performed an investigation on the homeostasis of red blood cells and the effect of different environmental conditions on the red blood cells. images of the results of the investigation were captured under the microscope and are illustrated here. which statements are supported by the results of the investigation? select all that apply. a the red blood cells on slide ii are in a state of homeostasis. b the red blood cells depicted in slide i were likely in a hypertonic environment. c all three slides indicate red blood cells in states of homeostasis. d the red blood cells depicted in slide iii were likely in a hypertonic environment. e the red blood cells depicted in slide iii gained water at a rate that is greater than the rate of loss of water.

Explanation:

• In a state of homeostasis, red - blood cells have a normal, biconcave shape. Slide II shows red - blood cells in a normal shape, indicating homeostasis.
• In a hypertonic environment, water moves out of the cell, causing the cell to shrink or crenate. Slide I shows crenated red - blood cells, likely in a hypertonic environment.
• Slide III shows swollen red - blood cells, which means they are in a hypotonic environment where water moves into the cell at a rate greater than the rate of water loss.

Answer:

A. The red blood cells on slide II are in a state of homeostasis.
B. The red blood cells depicted in slide I were likely in a hypertonic environment.