Test 1 Vocabulary Chapter 5 Flashcards Preview

Bio 141 > Test 1 Vocabulary Chapter 5 > Flashcards

Flashcards in Test 1 Vocabulary Chapter 5 Deck (20):
1

Active Transport

requires energy to more molecules against concentration gradient
against gradient
requires energy

2

Allosteric Regularion

regulation of activity of a protein

3

Aquaporin

allow water to diffuse across membranes
found in mammal kidney and plant root cells
important for water absorption

4

Bulk Transport

moving large volumes into or out of the cell via membrane bound vesicles

5

Channel Protein

integral membrane that forms an aqueous passageway across the membrane

6

Diffusion

molecules move from areas if higher concentration to areas of lower concentration

7

Endocytosis

liquid or solid particles are taken up by a cell though invagination of the plasmamembrane

8

Exocytosis

process by which a vesicle within a cell fuses with the plasma membrane and releases it contents to the outside

9

Facilitated Diffusion

molecules allowed to cross the membrane via specific patterns

10

Fluid Mosaic model

moves around many different things

11

Gated Channel

opens in response to stimulus
allosertic

12

Hypertonic

concentration is higher on the outside of the cell
high concentration of solute
shrivels

13

Hypotonic

Concentration is higher on the inside of the cell
low concentration of solute
lyses

14

Isotonic

Equal
normal

15

Kinase

enzyme that catalyzed the addition of a phosphate group from ATP to a target protein

16

Ligand

chemical signals that bind to proteins

17

Osmosis

diffusion of water across a membrane

18

Passive Transport

solute movement with the concentration gradient
no energy needed
simple diffusion
facilitated diffusion

19

Signal Transduction Pathway

series of biochemical steps whereby a stimulus to a cell is translated into a response of the cell

20

Simple Diffusion

doesn't involve direct imput of energy or assistance by carrier proteins