understand biology
Recent research shows the effectiveness of self explanation
Try using these cards with a partner to revise respiration and photosynthesis
Print onto card. Cut out, place face down in a pack.
Pick up a card
Explain the concept with a whiteboard or paper.
Use all of the words on each card.
Then look up the concept in a textbook and correct your mistakes.
Work your way through the pack.
Read moreOxygen is the final electron acceptor. It oxidises the final carrier in the ETC on the inner mitochondrial membrane and is reduced to water.
Hydrogen ions flow from the inter membrane space into the matrix via ATP synthase, this electrochemical gradient phosphorylates ADP.
Hydrogen ions are pumped from the matrix into the inter membrane space, using the energy from the electrons flowing along the ETC. The electrons come from the oxidation of food, transferred by coenzymes NAD and FAD.
Glycolysis occurs in the cytoplasm. Link and Krebs in the matrix. Link and Krebs produce carbon dioxide by the removal of a carboxyl group.
Fermentation is just glycolysis with a different way of regenerating NAD (from NADH) by the reduction of pyruvate (or ethanal).
Substrate level phosphorylation is the direct addition of phosphate to ADP, occurs in glycolysis (4 ATP) and Krebs (once per turn), chemiosmosis is H ions flowing through ATP synthase.
Cristae give a larger surface area for oxidative phosphorylation
Read moreA guide to aerobic and anaerobic respiration for A level Biology with plenty of exam questions on respiration with markschemes, for AQA, OCR, Edexcel
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Read moreThis is an outstanding synoptic question from a Pre-U Biology Paper. Covers Protein Synthesis, Enzymes, Heart Disease, Respiration ....
Read moreA level Biology Questions by Topic with Markschemes - Aerobic respiration and Anaerobic Respiration
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Read moreOne from the OCR Unifying concepts paper, combines respiration and photosynthesis.
(a) think photolysis and Oxygen accepting electrons ...
(b) is about phosphorylation and diffusion gradients
(c) is about the nature of passive transport and using proteins
(d) is about endosymbionts and prokaryotes
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Read moreTry this, a terrific exercise to link Photosynthesis and Respiration. Excellent end of term revision.
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Read moreI have made a series of 9 short (5-7 mins) video tutorials to try to help students understand glycolysis, link reaction, krebs cycle, anaerobic respiration, oxidative phosphorylation, chemiosmosis and the use of other respiratory substrates. I hope you find them of use.
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Read moreTeaching aerobic respiration is a difficult topic, traditionally, teachers begin with glycolysis, then link reaction and krebs cycle and then the electron transport chain, I would argue that there is a better way to teach this.
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