Becker's World of the Cell (9th Edition)
Becker's World of the Cell (9th Edition)
9th Edition
ISBN: 9780321934925
Author: Jeff Hardin, Gregory Paul Bertoni
Publisher: PEARSON
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Chapter 11, Problem 11.9PS

Metabolite Transport Across Membranes. For each of the following metabolites, indicate whether you would expect it to be in steady-state flux across one or more membranes in a photosynthetically active chloroplast, and, if so, indicate which membrane(s) the metabolite must cross.

(a) CO2

(b) Pi

(c) Electrons

(d) Starch

(e) Glyceraldehyde-3-phosphate

(f) NADPH

(g) ATP

(h) O2

(i) Protons

(j) Pyruvate

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A violation of the First Law? The complete combustion of glucose to CO 2 and H 2 O yields 30 ATP, as shown in Table 18.4 . However, the synthesis of glucose requires only 18 ATP. How is it possible that glucose synthesis from CO 2 and H 2 O requires only 18 ATP , but combustion to CO 2 and H 2 O yields 30 ATP? Is it a violation of the First Law of Thermodynamics , or perhaps a miracle?
Saccharides: Using the following substrates, estimate the net ATP yield after glycolytic pathway, Kreb’s cycle and electron transport chain. Assume that the estimate for ATP yield per mole of NADH is 3 moles of ATP, while 1 mole of FADH2 is equivalent to 2 moles of ATP, and one mole of GTP is equivalent to one mole of ATP. Show all pertinent solutions and determine: a) ATP used, b) ATP produced, and c) Net ATP. Based on your solutions, rank the substrates based on increasing yield of ATP 1. Three moles of glucose-6-phosphate
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