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Flashcards in Ch. 5 Microbial Metabolism Deck (35)
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Metabolism

All the chemical reactions inside a cell

1

Metabolic Pathway

A sequence of chemical reactions inside a cell

2

Anabolism

Chemical reactions that use NRG to make bigger molecules from smaller ones

3

Catabolism

Chemical reactions that release NRG by breaking chemical bonds

4

Endergonic

Requires NRG to occur, products have more NRG than reactants

5

Exergonic

Releases NRG, products have less NRG than reactants

6

Enzymes

Catalyze chemical reactions in a living cell

7

Active Site

Where substrate binds to enzyme-binding is specific

8

Inhibitor

Substance that binds to an enzyme and lowers activity

9

Competitive Inhibitors

Competes with substrate for active site

10

Noncompetitive Inhibitors

Binds to enzyme at a location other than the active site

11

Allosteric Site

On/Off switch

12

Activator

Substance that binds to an enzyme and increases activity

13

Cofactors

Molecules that help enzymes

14

Oxidation

Atom loses e-

15

Reduction

Atom gains e-

16

Biological Oxidation

Dehydrogenation bc H atom is also lost w/ e-

17

Substrate-level Phosphorylation

Enzyme transfers a phosphate group from an organic molecule to ADP, seen in Glycolysis.

18

Oxidative Phosphosrylation

Last step of respiration where H+ ions moved across membrane by ETC provide NRG to ATP Synthase so it can add iP to ADP, process requires a final e- acceptor like Oxygen or another molecule.

19

Embden-Meyerhof

Most common form of glycolysis as route for glucose and other hexoses

20

Entner-Doudoroff

Used by G- bac soil and a few G+ bac
Makes 1 net ATP

21

Pentose-Phosphate

Used aerobically or anaerobically and at same time as EMP or EDP

22

What are the steps of Respiration?

1. Glycolysis
2. Oxidation of Pyruvate
3. Kreb's Cycle
4. ETC

23

What happens in Oxidation of Pyruvate?

IN: Pyruvate
OUT: Acetyl CoA, CO2, and NADH

24

What happens in the Kreb's Cycle?

IN: Last 2 Carbons of Pyruvate carried by Acetyl CoA
OUT: NADH, FADH2, 2 ATP, CO2

25

The final electron acceptor in Aerobic Cellular Respiration is what?

Oxygen

26

The final electron acceptor in Anaerobic Cellular Respiration is what?

Inorganic or Organic; not oxygen

27

What are 2 common types of Fermentation?

1. Alcoholic Fermentation
2. Lactic Acid Fermentation

28

What happens in Alcoholic Fermentation?

Pyruvate reduced to CO2 and Ethanol

29

What happens in Lactic Acid Fermentation?

Pyruvate reduced to lactic acid
Homolactic(just lactic acid)
Heteroactic(lactic+other acids)