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F214 Respiration
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Respiration Flashcards
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Flashcards
18 Flashcards
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Some examples from this set of practice questions
1.
Describe the structure on an ATP molecule.
Answer: Adenosine Triphosphate. Nitrogenous base adenine, bonded to Carbon 1 on the Ribose sugar. Three phosphates bonded to Carbon 4.
2.
Give two reasons why plant/animal cells need to respire?
Answer: For transport methods Metabolic reactions Mitosis/Meiosis Replication of DNA, organelles Movement Activation of chemicals (phosphorylation of glucose)
3.
Give one coenzyme used in respiration, and how/why it is used.
Answer: Coenzyme A binds to acetate to feed it into the Krebs cycle. NAD is dehydrogenated to oxidise compounds. NADH is broken down for use in oxidative phosphorylation.
4.
What is the net total of products produced by glycolysis?
Answer: 2ATP, 2NADH, 2 Pyruvates
5.
What process causes Hexose 1-6 Bisphosphate to become Triose Phosphates?
Answer: Hydrolysis.
6.
How is the inner membrane adapted to maximise respiration?
Answer: Cristae allows larger surface area Different lipid composition causes it to be impermeable to small ions Many electron carrier proteins and ATP synthase enzymes High protein to phospholipid ratio - lots of proteins
7.
What causes pyruvates to become acetate in the link reaction?
Answer: Dehydrogenation by reducing NAD. Decarboxylation by releasing CO2.
8.
Where does the link reaction and Krebs cycle occur as opposed to glycolysis?
Answer: Glycolysis - cytoplasm of the cell. Link and Krebs - mitochondrial matrix.
9.
Citric Acid/Citrate is a 4 carbon compound. True or false?
Answer: False. It is a 6 carbon compound.
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