- Where does Glycolysis occur?
- What stage of cellular respiration is glycolysis?
- The carbohydrate, glucose is broken down into what during glycolysis?
- What else is produced during glycolysis?
- How many ATP molecules are produced in glycolysis?
“Glykos”= sweet; “lysis”=split apart
GLUCOSE → 2 PYRUVATE
Occurs in cytoplasm
- Requires 2 ATP to get started
Produces 4 ATP (net gain 2ATP)
Produces 2 NADH
- Interesting Fact:
- Earliest fossil bacteria (3.5 billion years ago) but large amounts of oxygen not present until 2.7 BYA
• Works without oxygen
~suggests ancient prokaryotes probably used glycolysis to make ATP before oxygen was present
- • happens in cytoplasm without mitochondria
- Where does the Krebs Cycle occur?
- What is used to make CO2, NADH, ATP, and FADH2?
- How many times does the Krebs Cycle turn, Why?
- How many molecules of CO2 are produced during the Krebs Cycle?
- What happens to the CO2 that is produced?
- Why is the conversion of FAD to FADH2 and NAD+ to NADH important?
- How Many ATP are created in the Krebs Cycle?
KREBS (CITRIC ACID) CYCLE
Releases 6 original carbons in glucose as 6 CO2;
Stores energy in NADH/FADH2
Occurs in Mitochondrial MATRIX
Each glucose requires TWO turns of cycle
1 GLUCOSE produces: 6 CO2, 2 FADH2, 2 ATP, 8 NADH
ETC- Electron Transport Chain
- What does the ETC use to maketo convert ADP to ATP? Where does it get these from?
- Where does the ETC occur?
- How many ATP molecules are created?
- stage that produces the MOST ATP
Attached to CRISTAE inner membrane
- Uses energy from NADH & FADH2 created during glycolysis and Krebs Cycle
create proton gradient and make ATP
- 1 glucose yields 36 net ATP during cellular respiration
Find your Caloric intake for one day? Share results on Monday.
Tutoring Saturdays Starts:
Biology Room: 5320
2/7/15, 2/14/15, 2/21/15, 2/28/15, 3/7/15, 3/14/15, 4/11/15, 4/18/15, 4/25/15
Session time: 8:30 a.m. to 11:30 a.m.