Introduction to Physiology Flashcards Preview

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Flashcards in Introduction to Physiology Deck (16)
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1
Q

What are cell membranes made of?

A

composed mainly of lipids and proteins, specifically a lipid bilayer (mostly phospholipid) and associated proteins.

2
Q

What gives each type of membrane in the cell its functional properties?

A

Cell membrane

3
Q

How permeable are cell membranes?

A

Selectively permeable

4
Q

Which molecules can / can’t pass through cell membrane easily?

A

Hydrophobic and small uncharged molecules can easily pass through.

Large uncharged molecules can slightly go through.

Charged molecules and ions are not permeable

5
Q

How do charged or larger molecules pass through cell membrane?

A

proteins embedded in the membrane can act to transport substances into and out of the cell.

6
Q

Name types of protein that can allow large / charged molecules to pass through

A

Carrier protein, channel protein

7
Q

How does channel protein work?

A

Forms a water-filled pore across the bilayer through which specific solutes can diffuse

8
Q

What is pigment causing colour in beetroot?

A

betacyanin (or betanin)

9
Q

What wavelength do you set spectrophotometer to for

A

535nm

10
Q

Spectrophotometer measures what?

A

Concentration of the pigment in the solution

11
Q

What would increase in absorbance mean regarding tonoplast?

A

Tonoplast is more disrupted - means more pigment leaks out and so more absorbance occurs

12
Q

Which organelle is betacyanin found in?

A

Vacuole

13
Q

What does tonoplast do?

A

phospholipid bilayer that allows water and solutes in / out of vacuole

14
Q

What is physiology?

A

Deals with mechanisms of living things when functioning normally

15
Q

What is pathology?

A

Study of disease

16
Q

What is pathophysiology?

A

Study of disordered physiological processes associated with disease or injury