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The electron transport chain pumps protons out of which intracellular compartmen

ID: 78229 • Letter: T

Question

The electron transport chain pumps protons out of which intracellular compartment to make ATP? a) A. mitochondrial outer membrane b) B. mitochondrial inner membrane c) C. mitochondrial intermembrane space d) D. mitochondrial matrix Which of the following describes how ATP is made during glycolysis and the citric acid a) Substrate level phosphorylation b) fermentation c) citric acid cycle d) oxidative phospholylation Regulation of cellular respiration occurs using the following inhibitors and activators. a) NAD^and FAD b) AMP and ATP c) NADH and FADH_2 d) H^and O_2 Approximately how many molecules of ATP are produced from the complete oxidation of one molecule of glucose in aerobic cellular respiration? a) 2 b) 4 c) 18-24 d) 30-32 Which of the following statements best describes the relationship between photosynthesis and respiration? a) Respiration runs the biochemical pathways of photosynthesis in reverse b) Photosynthesis stores energy in complex organi

Explanation / Answer

22) ans- mitochondrial inner membrane

Protons in the inter-membranous space of mitochondria first enters the ATP synthase complex through a subunit channel. The efflux of protons from the mitochondrial matrix creates an electrochemical gradient (proton gradient) which is used by the ATP synthetase.

23) ans-a substrate level phosphorylation

A phosphate group is transferred from GTP to A,.directly phosphorylating ADP with a phosphate and energy

24) ans-AMP and ATP

AMP regular acyvates enzyme is a positive regulator and ATP is a regular inhibits enzyme/negative regulator

25 )ans-D-30-32molecules

2 molecules of ATP - in Glycolysis

2 NADH * 1.5 ATP = 3 OR 5 ATP

2 NADH (Oxidative phosphorylation)=5 ATP

Substrate-level phosphorylation = 2 ATP

Oxidative phosphorylatioN - 6 NADH = 15ATP

Oxidative phosphorylatio = 2 FADH2 = 3

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