During the Light Dependent Reactions in photosystem II
100
What is the primary electron carrier in Photosynthesis?
NADP+
100
The overall purpose of the Calvin cycle is to:
to make sugar
100
What are the products of photosynthesis?
1- oxygen
2- sugar
200
Organisms that make their own energy are called
autotrophs
200
In van Helmont's experiment, most of the added mass of the tree came from what two things?
water and CO2 (air)
200
NADPH is produced in light-dependent reactions and carries energy in the form of what?
high energy electrons
200
The most abundant protein on earth is _______________. This enzyme is responsible for carbon fixation in the Calvin Cycle.
rubisco
200
The oxygen in our atmosphere comes from _____.
Water (water splitting)
300
What is the main pigment in plants called and where are they located (be specific)?
Chlorophyll
Located in photosystem I and II in the thylakoid membrane.
300
What is the main product of photosystem I
NADPH
300
What are the products of the Light-Dependent reactions?
ATP, NADPH and O2
300
The energy to power the Calvin cycle comes from:
Light dependent reactions (light reactions)
ATP and NADPH
300
ATP consists of:
adenine, ribose, 3 phosphates
400
When something appears red, it is absorbing all colors except _________.
Red
400
What happens in Photosystem II?
Light from the sun is absorbed by chlorophyll which ejects an e- into the electron transport chain; H2O is split into e-, O2, and H+; the e- replenishes chlorophyll
400
Is another water molecule split before the start of photosystem I or are the electrons re-excited from another photon of light?
electrons re-excited from another photon of light
400
What are the three phases of the Calvin Cycle?
1- Fixation
2- Making of sugar (Reduction)
3- Regeneration
400
During which main phase of photosynthesis is CO2 consumed?
During the fixation step of the Calvin Cycle.
500
How is energy released from ATP?
the bond between two P is broken. ADP and P are produced.
500
Where are hydrogen ions pumped into to generate energy to make ATP?
pumped from the thylakoid space into the stroma by ATP Synthase
500
What are the two roles of ATP Synthase?
1- pumps protons from thylakoid space to stroma.
2- makes ATP from ADP and P
500
How many CO2 molecules are required to produce one sugar molecule (one glucose molecule)?
6
500
Where do ATP and NADPH come from? (Be specific)
in the light dependent reactions:
- NADPH is formed in photosystem I (from e- and H+)
- ATP is formed by ATP synthase (from ADP and P)