CH 6Lab Making Life Work: Capturing and Using Energy Flashcards Preview

Final Exam > CH 6Lab Making Life Work: Capturing and Using Energy > Flashcards

Flashcards in CH 6Lab Making Life Work: Capturing and Using Energy Deck (15):
1

What is the nature of a spontaneous process and what is the distribution of energy?

It is exergonicEnergy is released usually in the form of heat

2

What is the second law of thermodynamics?

Entropy increases

3

What is the first law of thermodynamics?

Energy can neither be created or destroyed

4

How to enzymes speed up reactions ?

They reduce the amount of activation energy required to complete the reaction

5

Why are activation energy barriers Important ?

Aids in the ability store macromolecules

6

How can activation energy barriers be overcome?

Addition of an enzyme or increasing temperature

7

What is the role of an enzyme?

To speed up chemical reactions

8

How do enzymes enable life?

Allows for reactions to occur within a biological time scale

9

What are enzymes made from?

Proteins

10

What is an enzyme substrate?

A reactant that requires the aid of an enzyme to produce products

11

How do enzymes recognize and bind to their substances? Shape important?

Specific amino acids make up the activation site which only match certain substrates.Shape is important

12

Does heating up an enzyme denature it?

Yes

13

Why does increasing temperature increase the rate of chemical reactions?

It increases the chance of chemical collisions

14

How is a synthetic substrate different from an indicator?

Synthetic substrate binds to the active site and is cleavedIndicator binds to the substrate

15

Can RNA act as an enzyme?

Yes