Cells & Osmosis

Question 0

Cell membrane

Answer 0

holds all of the cell pieces and fluids inside the cell and keeps any nasty things outside the cell

Question 1

Scanner vs. low/high power

Answer 1

1. Scanning (4x) objective
2. Low power (10x) objective
3. High power (40x) objective

Question 2

Molecule size across membrane

Answer 2

If a molecular compound is too big then it will not be able to pass through the pore. Instead it would have to be transported through a pump found on the membrane. Small compounds are able to pass through easily.

Question 3

Diffusion

Answer 3

a type of passive transport, therefore, it is a net movement of molecules in and out of the cell across the cell membrane along a concentration gradient.

Question 4

Urine

Answer 4

It is one of the body’s chief means of eliminating excess water and salt and also contains nitrogen compounds such as urea and other waste substances removed from the blood by the kidneys.