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Which photosystem is used first in photosynthesis?
Photosystem 2 happens in photosynthesis before photosystem 1. However they are numbered in order of how they were discovered. Photosystem 1 was discovered before photosystem 2. In photosynthesis the order of them is 2 then 1. meaning that photosystem 1 was discovered 1st but photosystem 2 happens 1st in photosynthesis
What fills the electron hole in photsystem 1 and 2?
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
How does electrons move photosytem II to photosytem?
No, they move from photosystem 2 to photosystem 1. 2 evolved first but was not discovered until after photosystem 1.
What are the two molecular groups of photosynthesis?
Photosystem 1 and Photosystem 2
Is photosystem 2 light dependent?
Both photosystem 2 & 1 are light-dependent.
What structure is made of chlorophyll molecules that collects photons?
photosystem 1 or 2 i forget :(
What is the role of photosystem 1 in the light reactions?
is a cluster of pigments, with a perticular chlorophyl in the center. The energy is absorbed and is then passed to the Hugh energy electrons, NADP will then pick up the electrons and make NADPH
What protein complex absorbs in energy that used to produce NADPH?
Photosystem 1
Which is a role of photosystem 1 in the light reactions?
to make energy-carrier molecules like NADPH Apex
What is contained in each photosynthetic unit of photosystem 1?
Photosystem I contains photosynthetic units with :- 200 or more molecules of chlorophyll a,- small amounts of chlorophyll b- protein saddled carotenoid pigment,-a pair of specialized reaction-center molecules of chlorophyll called P700
Where does photosystem 2 and photosystem 1 occur?
1. Photosystem I is found in the membrane facing the inside of the grana and Photosystem II is found in membrane facing the stromaTHYLAKOID MEMBRANE
Which photosystem is used first in photosynthesis?
Photosystem 2 happens in photosynthesis before photosystem 1. However they are numbered in order of how they were discovered. Photosystem 1 was discovered before photosystem 2. In photosynthesis the order of them is 2 then 1. meaning that photosystem 1 was discovered 1st but photosystem 2 happens 1st in photosynthesis
What are the products of photosystem 2 and photosystem 1?
NADPH
What fills the electron hole in photsystem 1 and 2?
In photosystem 2- water(photolysis) In photosystem 1 - electron from photosystem 2
How does electrons move photosytem II to photosytem?
No, they move from photosystem 2 to photosystem 1. 2 evolved first but was not discovered until after photosystem 1.
What are the two molecular groups of photosynthesis?
Photosystem 1 and Photosystem 2
What is the difference beyween photosystem 1 and photosystem 2?
The structure of photosystem I in a cyanobacterium ("blue-green alga") has been completely worked out. It probably closely resembles that of plants as well. It is a homotrimer with each subunit in the trimer containing: * 12 different protein molecules bound to * 96 molecules of chlorophyll a ** 2 molecules of the reaction center chlorophyll P700 ** 4 accessory molecules closely associated with them ** 90 molecules that serve as antenna pigments * 22 carotenoid molecules * 4 lipid molecules * 3 clusters of Fe4S4 * 2 phylloquinones Photosystem II is also a complex of * > 20 different protein molecules bound to * 50 or more chlorophyll a molecules ** 2 molecules of the reaction center chlorophyll P680 ** 2 accessory molecules close to them ** 2 molecules of pheophytin (chlorophyll without the Mg++) ** the remaining molecules of chlorophyll a serve as antenna pigments. * some half dozen carotenoid molecules. These also serve as antenna pigments. * 2 molecules of plastoquinoneSource: http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/L/LightReactions.html
