General Photosynthesis 1
Photosynthesis absorbs this type of energy
Photons (Light Energy)
Photosynthesis only occurs in plants, T/F?
False! Algae and some forms of bacteria and protists
is photosynthesis anabolic or catabolic?
Anabolic
State the order at which an electron passes through these:
NADP reductase, Photosystem I, Photosystem II, B6F
Photosystem II, B6F, Photosystem I, NADP reductase
Leaves (access to sunlights + stomata + chlorophyll)
6CO2 + 18 ATP + 12 NADPH + water →
2 G3P + 16 Pi + 18 ADP + 12 NADP+
is the net chemical equation for the....
Calvin cycle
Byproduct of Light Dependent Reactions that is NOT used in Calvin cycle or by plant
Oxygen
How many times must the Calvin cycle be completed in order to synthesize one molecule of glucose.
Six
All colour wavelengths of light are absorbed by plants EXCEPT
Green (which is why plants are green 🙃)
A stack of thylakoids make up a...
Granum (multiple stacks are called Grana)
Photosystem ____ absorbs a photon, which excites an electron enough to leave the molecule and has a strong attraction for electrons and pulls them from water.
Photosytem II (aka P680)
What are the two types of photophosphorylation?
Cyclic (when ATP is low) and non cyclic
What is the molecule produced at the end of the Calvin cycle?
Glyceraldehyde-3-Phosphate (G3P)
When oxygen reacts with RuBP, different products are formed, which reduces the efficiency of photosynthesis. This process is known as....
Photorespiration (supposed to react with CO2 in first step of Calvin cycle to form PGA)
What are four factors that impact rate of photosynthesis?
CO2 concentration, O2 concentration, Light intensity, Temperature
These types of plants live in hotter, drier climates and as such have evolved mechanisms to improve efficiency of photosynthesis
C4 and CAM plants
While cell resp uses NADH, photosynthesis uses....
Why is the Calvin cycle sometimes called “dark reactions”?
It does not require light/photons
Hottest soon-to-be UofT student at Redmond
You 😘
Unlike the light reactions, which take place in the thylakoid membrane, the Calvin cycle takes place in the
Stroma (the inner space of chloroplasts).
What part of plants do carbon dioxide and oxygen enter/exit through
Stomata
What is the primary purpose of chlorophyll?
Absorb photons
Do plants undergo cellular respiration?
Yes (they do both! They just need glucose from photosynthesis since…
ATP Synthesis is made possible via ATP Synthase and THIS process
Chemiosmosis