QUARTER 2 (2nd PPT) Transports Mechanisms in Cells Flashcards

1
Q

It is the movement of ions and molecules across the cell membrane without requiring energy.

A

Passive transport

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2
Q

is the movement of molecules across a membrane from a region of lower concentration to a region of higher concentration

A

Active Transport

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3
Q

process resulting from random motion of molecules by which there is a net flow of matter from a region of high concentration to a region of low concentration.

A

Diffusion

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4
Q

the spontaneous passage of water or other solvents through a semipermeable membrane

A

Osmosis

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5
Q

Movement of large molecules in and out of the cell with the help of a transporting organelle in cells.

A

Vesicular Transport

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6
Q

Movement of solutes to an area of high concentration to an area of low concentration

A

SIMPLE DIFFUSION

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7
Q

Happens when there is a difference in the concentration of nonpolar solutes across a cell membrane.
Example
O2
CO2
Fatty acids

A

SIMPLE DIFFUSION IN CELLS

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8
Q

Difference in concentration of polar solutes between 2 areas.
Example:
ions
glucose

A

FACILITATED DIFFUSION

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9
Q

2 TYPES
1. Channel mediated diffusion
a. Leak Channel
b. Gated Channel
2. Carrier mediated diffusion

A

FACILITATED DIFFUSION

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10
Q

The channel is always open

A

LEAK CHANNEL

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11
Q

The channel is open when needed

A

GATED CHANNEL

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12
Q

The channel is Opening changes shape

A

Carrier Mediated Diffusion

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13
Q

Passive movement of solvent through a selectively permeable membrane

A

OSMOSIS

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14
Q

The 2s OSMOSIS ACROSS A CELL MEMBRANE

A

Lipid bilayer
Aquaporin – Protein Channel

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15
Q

Requires cellular energy
2 Types
Active Transport
Vesicular Transport

A

Active processes

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16
Q

Movement of solute against the concentration gradient
2 Types
Primary Active transport
Secondary Active transport

A

ACTIVE TRANSPORT

17
Q

Uses transmembrane channels known as ions pumps Move against the concentration.
Low concentration to high concentration
Require energy (ATP)

A

Primary Active Transport

18
Q

ATP will attach and stimulate/ change the shape of the ion pump
ATP will allow 3 Na ion into the pump
ATP will change into ADP and P
ADP will be released back into the cytoplasm as P will remain attach to the pump

A

Primary Active Transport – Ion pump

19
Q

Na ions will travel out of the pump
P will attract 2 K ions into the pump
K ions will travel out of the pump
P will be released
Pump will go back to its original shape.

A

Primary Active Transport – Ion pump

20
Q

High to low concentration, will produce energy that will let the movement of a molecule from low concentration to high concentration

A

Secondary Active Transport

21
Q

2 Types of Secondary Active Transport

A

Antiport
Symport

22
Q

2 substances are move in the opposite direction

23
Q

2 substances are move in the same direction

A

Symport/ Symporter

24
Q

Transport Vesicle a membranous sac that is found in the cytoplasm
Movement of large molecules (proteins and polysaccharides)
2 types
Exocytosis
Endocytosis

A

Vesicular Transport

25
Use of vesicles to move molecules out of the cell
Vesicular Transport - Exocytosis
26
3 types Phagocytosis Pinocytosis Receptor mediated Endocytosis
Vesicular Transport - Endocytosis
27
Use of vesicles to move large molecules inside the cell
Phagocytosis
28
Use of vesicles to move interstitial fluid with solutes (small molecules mixed with water) inside the cell.
Pinocytosis
29
Uses receptors (carbohydrates) attached in the lipid bilayer to move certain/special molecules into the cells
Receptor Mediated Endocytosis