I 400 500 600 700 Wavelength of light (am) Figure 10.1 4) What wavelength of lig
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I 400 500 600 700 Wavelength of light (am) Figure 10.1 4) What wavelength of light in the figure is least effective in driving photosynthesis? A) 575 mm B) 475 mm C) 420 mm D) 625 mm E) 510 mm 5) 5) Most Co2 from catabolism is released during A) lactate fermentation. B) the citric acid cycle. C) electron transport D) glycolysis. E) oxidative phosphorylation 6) In the absence of oxygen, yeast cells can obtain energy by fermentation, resulting in the 6) production of A) ATP, CO2-and lactate. B) ATP, NADH, and pyruvate. C) ATP, pyruvate, and acetyl CoA. D) ATP, pyruvate, and oxygen. E) ATP, CO2, and ethanol (ethyl alcohol). 7) Which of the following events occurs in the light reactions of photosynthesis? 7) A) ATP is phosphorylated to yield ADP. B) Light is absorbed and funneled to reaction-center chlorophyll a. C) NADPH is reduced to NADP+ D) NADP is produced. E) Carbon dioxide is incorporated into PGA. 8) In cellular respiration, where are the proteins of the electron transport chain located? 8) A) mitochondrial matrix B) mitochondrial intermembrane space C) mitochondrial inner membrane D) mitochondrial outer membrane E) cytosolExplanation / Answer
4. The rate of photosynthesis is low in 575 nm range (1.). The process is slowest in the green light in the visible spectrum. It is highest in violet and red wavelengths.
5. B. Citric acid cycle. Glucose passes through a lot of pathways for the metabolism. Glycolysis takes place where Atp is generated and pyruvate is formed. Then occurs tje TCA cycle which is .10 steps reaction yielding CO2 molecules from pyruvate and acetyl CoA.
Total 6 CO2 molecules are produced during the process.
6. A. Fermentation in yeast produces ATP, CO2 as a waste oroduct andlactate from pyruvate. It consumes sugar moeities in the absence of oxygen.
7. B. Light is absorbed and funneled to the reaction centre. The light phase reactions are dependent on light and occur in the presence of light. Light is absorbed and photons are produced. They are used to transfer energy to the reaction centres in the chlorophyll to knock the electrons oyt and the process starts.
Rest are the part of dark phase of photosynthesis.
8. C. The complexes are present in the inner mitochondrial membrane. Complex 1, 3,4 are toyally embedded in the inner membrane and span it. Complex 2 is more towrds the matrix space. Complex 2 is not involved in the production of H+ions also. 1,3,4 ,complex are involved in the generation of proton gradient.
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