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 moreTips for Photosynthesis
LDR - occurs on the thylakoid membranes. Limiting factor is light intensity
Phosphorylates ADP (through chemiosmosis) - creates the Hydrogen ion gradient by the flow of electrons along the ETC in the thylakoid membrane. The flow of electrons is driven by the capturing of light by a range of different pigments which channel the energy to a chl a molecule at the reaction centre of the photosystem - which then loses an electron.
Reduces NADP with an electron from splitting water (photolysis) at PSII.
Light Independent Reaction (reduction of carbon dioxide) - occurs in the stroma (the cytoplasm of the chloroplast).
Limited by speed and quantity of RUBISCO enzyme (kinetic energy - temperature) and substrate concentration (Carbon dioxide)
Needs the products of the LDR - ATP and NADPH
NADPH and ATP are used to regenerate RUBP
Each time the Calvin cycle turns, a single Carbon is reduced. 3 turns - one extra Triose Phosphate. 6 turns - 2 extra TP = 1 extra glucose.
TP is the source of all of the carbon in all plants (and hence in all heterotrophes) - Amino acids, DNA, RNA, phospholipids etc
Understanding Photosynthesis - Tips, Videos, PowerPoints and Pack of Exam Questions with Markscheme
if you use then like and share
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
Please like and share
Read moreTry this, a terrific exercise to link Photosynthesis and Respiration. Excellent end of term revision.
Please like and share
Read moreSPOTLIGHT: WEEKLY GROUP MASTERCLASSLast few spaces ! Book your place now as they’re likely to sell out as we get closer to the exams. We cover a different topic each week, looking in depth at how to structure answers and approach application questions for top marks. Lesson videos are available for recaps and revision.
“The focus the sessions have on understanding biological concepts and how to correctly answer past paper questions has really helped me. Through actively attending the group tutoring sessions my Biology grades are quickly improving from Cs to As.” - Eloise Brown (and yes she got an A!)
Do you want to improve your grades in A level Maths, Chemistry, Psychology, Sociology, Geography, or Economics ? - One-to-one tuition for very experienced A level Teachers