True or false? Osmosis is a type of diffusion.

Question

View Available Hint(s)for Part A

True
False
Part B
What property of dishwashing liquid (detergent) makes it useful to wash grease from pans?
View Available Hint(s)for Part B

Permeability
Solubility in water
Hydrophobic nature
Amphipathic nature
Part C
Which of the following particles could diffuse easily through a cell membrane?
View Available Hint(s)for Part C

Sodium ion (Na+)
Oxygen (O2)
Glucose
Hydrogen ion (H+)
Part D
True or false? The water-soluble portion of a phospholipid is the polar head, which generally consists of a glycerol molecule linked to a phosphate group.
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True
False
Part E
If a red blood cell is placed in a salt solution and bursts, what is the tonicity of the solution relative to the interior of the cell?
View Available Hint(s)for Part E

Isotonic
Osmotic
Hypertonic
Hypotonic

Answer 1

Sure! Here are the answers to your questions:

Part A: True
Osmosis is a specific type of diffusion that refers to the movement of water across a semipermeable membrane.

Part B: Amphipathic nature
Dishwashing liquid is effective at washing grease because it has an amphipathic nature, meaning it has both hydrophobic (water-repelling) and hydrophilic (water-attracting) components that can interact with both water and oils or grease.

Part C: Oxygen (O2)
Oxygen can easily diffuse through a cell membrane because it is a small, nonpolar molecule, while sodium ions (Na+), glucose, and hydrogen ions (H+) have a harder time crossing the membrane without assistance.

Part D: True
The water-soluble portion of a phospholipid is indeed the polar head, which usually consists of a glycerol molecule linked to a phosphate group.

Part E: Hypertonic
If a red blood cell is placed in a salt solution and bursts, the solution is hypertonic relative to the interior of the cell, as there is a higher concentration of solute (salt) outside the cell, causing water to move out of the cell and leading to its rupture.