Nov. 2 (aerobic vs. anaerobic)

BiologBiology Iy I

Mr. Mr. NettlesNettles

Agenda – Wed., Nov. 2, Agenda – Wed., Nov. 2, 20112011

Warm-Up: EOC QuestionsWarm-Up: EOC QuestionsLesson: Anaerobic vs. Aerobic Lesson: Anaerobic vs. Aerobic Wrap-Up: Review Questions from Wrap-Up: Review Questions from

LessonLessonHomework: Summarization Worksheet Homework: Summarization Worksheet

(due at beginning of class tomorrow!)(due at beginning of class tomorrow!)Tomorrow: Review Day!!Tomorrow: Review Day!!Friday: Major Quiz!!Friday: Major Quiz!!

Today’s ObjectivesToday’s Objectives

I will define aerobic and I will define aerobic and anaerobic respiration.anaerobic respiration.

I will compare and contrast I will compare and contrast aerobic and anaerobic aerobic and anaerobic respiration.respiration.

A. binds to specific active sites

A.stores genetic information

A. transports amino acids to ribosomes

A. produces chromosomes for sexual reproduction

What is the primary function of DNA

In organisms?

Warm-Up (Nov. 2)

A. lipids

A. proteins

A. nucleic acids

A. carbohydrates

Which molecules store and transmit genetic

information ?

Warm-Up (Nov. 2)

A. swell when exposed to salt.

A. absorb the extra salt.

A. release water in the presence of salt.

A. lose oxygen when in contact with salt.

A student notices that the lettuce in a salad

wilts soon after salt is added. Wilting most

likely occurs because the lettuce cells:

Warm-Up (Nov. 2)

Aerobic and Anaerobic Aerobic and Anaerobic RespirationRespiration

Cellular respiration is a type of Cellular respiration is a type of aerobic aerobic respiration respiration because it because it requires oxygenrequires oxygen..

Aerobic and Anaerobic Respiration

Cellular respiration occurs in three main parts.Glycolysis Krebs Cycle (citric acid cycle)Electron Transport Chain

Glycolysis

Glucose is broken down into pyruvic acid.

Two molecules of ATP and two molecules of NADH are formed for each molecule of glucose that is broken down.


Krebs Cycle (citric acid cycle)

The Krebs Cycle produces six CO2 (carbon dioxide) molecules, two ATP, eight NADH, and two FADH2.


The series of reactions in which pyruvic acid is broken down into carbon dioxide.

NADH and FADH2 carry high-energy electrons.

Krebs Cycle (citric acid cycle)


Electron Transport Chain


NADH and FADH2 release high-energy electrons (H+) to produce ATP.

NADH becomes NAD+

FADH2 becomes FAD

Uses ten NADH molecules from glycolysis and the Krebs Cycle to make 30 ATP.

Uses two FADH2 molecules from the Krebs Cycle to make 4 ATP.


Summary of Cellular Respiration (Aerobic Respiration)Summary of Cellular Respiration (Aerobic Respiration)

Process What Happens? What’s Made?

Glycolysis glucose breaks down into pyruvic acid

2 ATP2 NADH

Krebs Cycle pyruvic acid is broken down into carbon dioxide

2 ATP8 NADH2 FADH2

Electron Transport Chain

ATP is formed from the transport of high-energy electrons

34 ATP


Anaerobic Respiration Anaerobic Respiration does not does not require oxygen.require oxygen.

Only Only two ATP are producedtwo ATP are produced Two Types:Two Types:

Lactic Acid FermentationLactic Acid Fermentation – used to – used to make foods such as cheese and make foods such as cheese and yogurtyogurt

Alcohol FermentationAlcohol Fermentation – used to make – used to make beer and winebeer and wine

1. What are are the three main stages of

cellular respiration ?

Wrap-Up (Nov. 2)

2. How are aerobic respiration and anaerobic

respiration different? 3. Count the total number of ATP

produced from cellular respiration. (Hint: Glycolysis + Krebs Cycle + Electron

Transport Chain )

Education

Nov. 2 (aerobic vs. anaerobic)