Aerobic Respiration I: Glycolysis and Krebs Cycle

Glycolysis begins with a 6-carbon sugar that is ____________ by ATP.

phosphorylated

The FIRST THREE steps of GLYCOLYSIS are called the __________ phase as you are using ATP to phosphorylate your 6-carbon sugar (USING ATP INSTEAD OF MAKING IT —> have to spend to make money)

preparatory

AFTER the PREPARATORY phase (Steps 1-3), the 6-carbon molecule with TWO PHOSPHATES is split into ___ parts, that will undergo the same reactions in duplicate.

two

During STEP 5, an extra PHOSPHATE gets tacked on, and an NAD is REDUCED to produce a HIGH ENERGY ELECTRON CARRIER (___ ___)—happens twice due to split.

NAD H

Following the REDUCTION OF NAD to NADH the PHOSPHATE is clipped off in ___________ - ____ ____________ to MAKE ATP; this continues until TWO _______ are produced.

Substrate, level, phosphorylation, pyruvate

The NET PRODUCTION of ATP produced during GLYCOLYSIS is what?

2 ATP, 2 NADH, 2 pyruvate (most of the energy in this)

The Kreb Cycle BEGINS with our 2 ________; a carbon and a couple of oxygens are clipped off of it forming a ______ ________; what’s leftover—the two carbons—hooks up with a molecule called CoA to form ______ - CoA; during this time another NAD comes along to be reduced and form an _____; this cycle is repeated in a cyclical nature (KREBS).

pyruvates, carbon dioxide, acetyl , NADH

Through the process of breaking carbons during the KREBS CYCLE, the ATP ENERGY needed remaining is MOSTLY in the form of high-energy electron carriers (______ and ______)

NADH, FADH2

What are the PRODUCTS of the KREB cycle per PYRUVATE?

1) 1 ATP 2) 4 NADH 3) 1 FADH2 4) 3 CO2

What are the PRODUCTS of the KREB cycle per GLUCOSE (*hint: two cycles per glucose)?

1) 2 ATP 2) 8 NADH 3) 2 FADH2 4) 6 CO2