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Flashcards in Lab-Chapter 3 Deck (33)
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0
Q

Diffusion is the movement of

A

Movement of substances from areas of high concentration to areas of low concentration

1
Q

3 positive/transport processes

A

Diffusion
Osmosis
Filtration

2
Q

Osmosis is the movement of

A

Movement of water through a selectively permeable membrane from areas of high concentration to areas of low concentration

3
Q

Filtration is the movement of

A

Movement of water and solute particles across a membrane from areas of high hydrostatic pressure to areas of low hydrostatic pressure

4
Q

Phospholipids have ____ heads and ___ tails

A

Hydrophilic

Hydrophobic

5
Q

Lipid molecules of the phospholipid bilayer:

A

Phospholipids

Cholesterol

6
Q

Membrane protein molecules:

A

Carrier protein
Protein channel
Solute pump

7
Q

Which of the protein molecules of the membrane are passive transport?

A

Carrier protein

Protein channels

8
Q

Which protein of the membrane is an active transport molecule?

A

Solute pump

9
Q

Other important chemicals involved with the membrane:

A

Glucose, water, ions, ATP

10
Q

Which are the smaller, more abundant molecules?

A

Phospholipids

11
Q

Which molecular group is lager in size but smaller in number?

A

Membrane proteins

12
Q

Cholesterol stabilizes the membrane. Based on it’s location in the membrane, is cholesterol hydrophilic or hydrophobic?

A

Hydrophobic

13
Q

Chemical bonds made and broken during metabolism are due to the movement of ____

A

Electrons as the move from one atom to another

14
Q

Substances that don’t move directly into the cell through the lipid portion of it’s membrane require passage through:

A

A protein channel, carrier, gate or pump.

15
Q

Active transport-

A

When the passage of substances through proteins requires ATP

16
Q

Passive transport-

A

Doesn’t require ATP but there always a driving force behind passive movement.

17
Q

What are the types of passive transport?

A

Osmosis, filtration, diffusion

18
Q

Glucose can get inside a cell through ____

A

A carrier protein

19
Q

Gradient-

A

A difference in population between 2 areas

20
Q

Solution=

A

Solute+Solvent

21
Q

Solute-

A

The substance present in the largest amount in solution. The dissolved substance

22
Q

Solvent-

A

Components or substances present in small amounts. Dissolving substance.

23
Q

Tonicity-

A

Concentration of non-penetrating dilutes present in a solution when compared to “normal” solute concentration in body fluids.

24
Q

3 types of solutions:

A

Hypertonic, Hypotonic, Isotonic

25
Q

Hypertonic-

A

Solution that contain more solutes than there are inside the cells

26
Q

Hypotonic-

A

Fewer solutes(thus more water) than the cell has

27
Q

Isotonic-

A

Same tonicity

28
Q

Cells in a hypotonic solution ____

A

Swell(Lyse)

29
Q

Cells in a hypertonic solution ____

A

Crenate

30
Q

What is the driving force behind diffusion?

A

Kinetic energy

31
Q

What drives filtration?

A

Hydrostatic pressure?

32
Q

Driving force behind Osmosis?

A

Solute concentration gradient