Chapter 4 : Energy And Metabolism

Question 0

What forms do energy happen ? (5)

Answer 0

Light 
Heat
Electrical
Chemical
Motion

Question 1

What is energy ?

Answer 1

The capacity to do work

Question 2

What is the study of hear and other forms of energy ?

Answer 2

Thermodynamics

Question 3

What is the first law of thermodynamics

Answer 3

Energy cannot be created or destroyed

Question 4

What is the second law of thermodynamics

Answer 4

Energy tends to disperse spontaneously. And without external influences the entropy of a system increases overtime.

Question 5

Enzymes normally end in _____?

Answer 5

-Ase

Question 6

Enzymes work by acting on particular______?

Answer 6

Substrates

Question 7

Factors that can cause the denature of an enzyme

Answer 7

Extremes of temperature
Extremes of pH
Alcohol
Metal ions

Question 8

Catabolic reactions build up rather than breakdown, True or false?

Answer 8

False

Question 9

______ Is defined as the spontaneous spreading of molecules.

Answer 9

Diffusion

Question 10

Factors that affect the rate of diffusion

Answer 10

Size, temperature, concentration, pressure & charge

Question 11

Why does diffusion occur?

Answer 11

Atoms and molecules bouncing into one another!

Question 12

The diffusion of water across the cell membrane is called______

Answer 12

Osmosis

Question 13

The relative concentration of solutes in one solution compared to another?

Answer 13

Tonicity

Question 14

Two solutions are____ If they have the same solute concentration

Answer 14

Isotonic

Question 15

If it has a lower solute concentration then it is ?

Answer 15

Hypotonic

Question 16

If it has a higher solute concentration than it is?

Answer 16

Hypertonic

Question 17

This type of transport across the membrane does not require energy and Is thus referred to as ?

Answer 17

Passive transport or facilitated diffusion

Question 18

To do this energy must be expended

Answer 18

Active transport

Question 19

Substances outside of the cell membrane are taking up, vesicles form around them, and the vesicles moved into the cell. This is called?

Answer 19

Endocytosis

Question 20

_____ Is a special kind of Endocytosis in which cells engulf targets with temporary projections of the cell

Answer 20

Phagocytosis

Question 21

In ______ vesicles with waste products/export materials moved to cell membrane, and the vesicle membrane fuses with the cell membrane

Answer 21

Exocytosis