Anaerobic Respiration Fermentation New seats for the new

Anaerobic Respiration - Fermentation • New seats for the new semester • Pick up 2 A + finals from the demo tables

13. 1 Ecologists Study Relationships Advisory 8: 00 am-8: 20 am 20 min Period 1 8: 28 am-10: 01 am 93 min Nutrition 10: 01 am-10: 13 am 12 min Period 2 10: 21 am-11: 54 am 93 min Lunch 11: 54 am-12: 29 pm 35 min Period 3 12: 37 pm-2: 10 pm 93 min Period 6 2: 18 pm-2: 56 pm 38 min

13. 1 Ecologists Study Relationships FRQ Analysis and Final Exam QAE Homework due 2/6 Photosynthesis + Fermentation Video Notes (2 A) AND Chapter 10 Reading Notes 2 stamps for 2 A quiz can be earned today

Anaerobic Respiration - Fermentation Final Exam 1 C 2 A 3 A 4 E 5 B 6 A 7 D 8 B 9 B 10 A 11 C 12 B 13 C 14 A 15 A 16 D 17 B 18 B 19 B 20 A 21 B 22 D 23 B 24 C 25 D 26 B 27 B 28 C

Anaerobic Respiration - Fermentation KEY CONCEPT Fermentation allows the production of a small amount of ATP without oxygen.

Anaerobic Respiration - Fermentation • If no oxygen is available, cells can obtain energy through the process of anaerobic respiration. • A common anaerobic process is fermentation. • Fermentation is not an efficient process and results in the formation of far fewer ATP molecules than aerobic respiration. There are two primary fermentation processes: 1. Lactic Acid Fermentation 2. Alcohol Fermentation

Anaerobic Respiration - Fermentation Lactic acid fermentation occurs when oxygen is not available. For example, in muscle tissues during rapid and vigorous exercise, muscle cells may be depleted of oxygen. They then switch from respiration to fermentation.

Anaerobic Respiration - Fermentation The pyruvic acid formed during glycolysis is broken down to lactic acid and energy is released (which is used to form ATP). Glucose → Pyruvic acid → Lactic acid + energy

Anaerobic Respiration - Fermentation • The process of lactic acid fermentation replaces the process of aerobic respiration so that the cell can have a continual source of energy, even in the absence of oxygen. • However this shift is only temporary and cells need oxygen for sustained activity.

Anaerobic Respiration - Fermentation • Lactic acid that builds up in the tissue causes a burning, painful sensation.

Anaerobic Respiration - Fermentation Alcohol fermentation occurs in yeasts and some bacteria. Pyruvic acid formed during glycolysis is broken down to produce alcohol and carbon dioxide and is released (which is used to form ATP).

Anaerobic Respiration - Fermentation Glucose → Pyruvic acid → alcohol + carbon dioxide + energy

Anaerobic Respiration - Fermentation • Fermentation is used in food production. – Yogurt - Soy Sauce – Cheese - Vinegar – Bread - Olives/Pickles – Beer/ Meade - Wine/ Ale – Sauerkraut - Malt

Anaerobic Respiration - Fermentation

Anaerobic Respiration - Fermentation worksheet