Photosynthesis 2
Terms
undefined, object
copy deck
- Calvin Benson Cycle (pathway for building glucose subunits)
- RuBP from CO2 fixation split into 2 PGA. ATP gives a phosphate group to the PGA. NADPH gives hydrogen & electons forming PGAL.
- total yield of ATP from aerobic and anaerobic respiration
-
aerobic - 36 ATP
anaerobic - 2 ATP - 3 events that take place during light-dependent reactions
-
1. pigments absorb light energy & give up electrons
2. electron & hydrogen transfers lead to development of ATP & NADPH
3. pigment that gave up electrons has them replaced - 3 functions of the 2nd stage of aerobic respiration
-
1.pyruvate broken down into water
2.strips hydrogen & electrons
3.stores (2)as coenzymes & transports them to 3rd stage - 3 stages of aerobic respirations and what happens
-
1. glycolosis
2. krebs cycle - pyruvate is broken down into CO2 and water
3.electon transport phosphorylation-produces 32ATP - what energy releasing pathway is used by bacteria
- anaerobic electron transport
- net energy yield of glycolosis
-
2 ATP
- 2 types of fermentation, what organisms use them, how much ATP is produced, from what part of reaction is produced
- lactate and alcoholic - bacteria and protists, 2 ATP, glycolosis
- Where do light dependent and light independent reactions happen in the chloroplast?
-
light-dependent - thylakoid membrane in the grana
light-independent - stroma - 3 sources the body uses for storing and/or obtaining energy
- carbohydrates, proteins, and lipids
- why doesn't all energy produces become available for other reactions
- its used to sustain the reactions
- electron transport systems
- organized sequence of enzymes & coenzymes bound to a membrane
- what 2 pathways make ATP and which is more efficient?
-
cyclic & noncyclic
noncyclic is more efficient - how do plants store their sugar phosphates and why in those forms?
-
sucrose - most easily transportable sugar
starch - osmotically inactive - equation for photosynthesis
-
12H20 + 6CO2 -----> 6O2 + C6H12O6 + 6H2O - 3 general types of pigments found in chloroplasts and what they absorb
-
chlorophylls - violet to blue and red
carotenoids - violet and blue
phycobilins - yellow and green - difference between C3, C4, and CAM plants
-
C3 - less sensitive to cold, fix CO2 during day
C4 - very hot growing season, fix CO2 during day
CAM - fix CO2 only at night, adapted to levels of low moisture, stomata closed during the day - raw materials used in light-independent reaction
- carbon dioxide, ATP, hydrogen, and electrons
- 2 products resulting from light-dependent reactions and what they provide
-
ATP - energy
NADPH - electrons and hydrogen - equation for anaerobic respiration
- C6H12O6 + 6O2 -------> 6CO2 + 6H2O
- where aerobic & anaerobic pathways take place and the final acceptor of electrons
-
aerobic - cytoplasm, mitochondria - oxygen
anaerobic - cytoplasm, anything but oxygen - light dependent reactions
- energy from sunlight is absorbed and converted to ATP energy. Water molecules split and the hydrogen and electrons from splitting of water and becomes NADPH.
- chemoautotrophs vs. photosynthetic organisms
-
chemoautotrophs use other chemicals for energy (sulfate)
photosynthetic use the sun as a source of energy - 3 energy releasing pathways
-
aerobic respiration
anaerobic respiration
fermentation - light independent reactions
- ATP donates energy to places producing glucose. Carbon dioxide splits to provide carbon and oxygen. Water splits to form hydrogen.
- by-product of light-dependent reaction and why its important
- oxygen - it allowed an oxygen rich atmosphere to build up allowing animals to live and plants to expand population
- What are the final products of photosynthesis?
- sucrose, starch, and other carbohydrates
- sugar phosphate is building block for what substances
- glucose and sucrose
- what are products of photosynthesis used for in a plant?
-
they are the building blocks for
-reparing, growth, survival, and reproduction - Glycolosis
- splits and rearragnes glucose into pyruvate, produces 4 molecules of ATP but only 2 are needed, oxygen is not used, happens in cytoplasm, 1st step in 3 pathways
- carbon dioxide fixation
- carbon dioxide is split apart and attaches to RuBP