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Flashcards in Chapter 8 Deck (39):
1

What is the solute?

Substance that is dissolved

2

What is the solvent?

Substance that does the dissolving

3

A difference in concentration is called...

Gradient

4

Which form of diffusion requires channel or carrier proteins?

Fracilitated

5

Which direction do particles move during diffusion

Down concentration gradient; high to low

6

True or false?
Passive transport requires energy from the cell

False

7

True or false?
Osmosis is an example of passive transport?

True

8

What type of environment has a higher concentration than the cell?

Hypertonic

9

Which direction will water flow in an isotonic solution?

In and out of cell

10

Which type of has a lower concentration than the cell?

Hypotonic

11

What happens to cells in hypotonic solutions?

Swell

12

What is it called when cells shrink as a result of osmosis

Crenation

13

The effect of a hypotonic solution on a cell?

Burst/swell

14

The name for the 2 layer structure?

Lipid bilayer

15

Direction water flows in isotonic?

In and out

16

This type f protein identifies cells

Cell surface markers

17

Chemical signal produced by cells and transported by the blood

Hormone

18

Ion can be moved against the concentration gradient by these

Pumps

19

What is diffusion?

The movement of substances down a concentration gradient

20

Molecule that helps stabilize phosolipida

Cholesterol

21

2 ways send signals through body

Nerves and chemicals

22

Type of protein is attached to the inside or outside of the membrane

Peri feral

23

Protein that helps start chemical reactions in the cell

Enzymes

24

What is equilibrium?

When the space is filled evenly

25

Passive transport

No energy
High to low

26

Active transport

Needs energy (ATP)
Low to high

27

Transport substances that fit within their binding site

Carrier protein

28

Ions, sugars, and amino acids diffuse through...

Channel proteins

29

Osmosis

Diffusion of water across a selectively permeable membrane

30

Movement of a large substance into a cell by a vesicle

Endocytosis

31

Movement of material out of a cell by a vesicle

Exocytosis

32

Phagoctosis

Solid

33

Pintocyrosis

Liquid

34

Diffusion directly through the membrane

Simple

35

Diffusion with carrier and channel proteins

Facilitated

36

Response to specific signals is made possible by...

Receptor proteins

37

Acts as a signal molecule within the cell; causes charges in the cytoplasm and nucleus

Second messenger

38

A cell may respond to a signal by...

1. Changing its membrane permeability
2. Activating enzymes
3. Forming a second messenger

39

Receptor protein has a unique shape called?

Binding site