Photosynthesis Test 2
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- In the C-4 cycle, CO2 is fixed to a 3 C molecule called _______
- PEP
- PEP turns CO2 into a 4 C molecule called _______
- oxaloacetic acid
- What is the enzyme that does the carbon "fixing"?
- PEP carboxylase, which is much better than RbBisCo
- Oxaloacetate moves deeper into cells called?
- bundle sheath cells
- What uses the C4 PathwaY?
- Corn, Sugarcane, Sorghum, and Savannah Grasses.
- How much more effecient is the C4 pathway than the C3 pathway?
- 3x
- CAM is used by?
- succulent plants, such as cacti and pineapple
- CAM is similiar to C4, but the C3 and C4 is _________
- seperated temporally
- In CAM, when is C4 used
- at night
- In CAM, when is C3 used?
- during the day, when ATP and NADPH can be made
- ________ is the amount of Photosynthesis on this planet measured in metric tons of carbon per year
- 160 billion
- ________ organisms start all food chains (virtually)
- Photosynthesizing
- Along with plants, a few ________ do photosynthesis also
- protists
- Photosynthesizing bacteria is called?
- cyanobacteria
- Who said that trees do not get mass from soil?
- Jon Baptista van Helmont
- Who discovered O2?
- Joseph Priestly
- Who said that plants would make bad air "good", and burning a candle would make good air "bad"?
- Joseph Preistly
- Who found that the process of turning good air to bad air and vice versa only happened in sunlight?
- Jan Ingen-housz
- Who used purple bacteria that used H2S to gain energy?
- Corniels Van Niel
- Photosynthesis is a ______ type of reaction
- REDOX
- NADP+ --> NADPH is a _________ type of reaction
- reduction, nitrogen is reduced
- How do we trap the energy coming from the sun in the visible spectrum?
- Chlorophylls and other pigments photoreceptors - chemicals
- All chlorophylls and other pigments photoreceptors are similar because (structure-wise)
- have ring structures with at least 1 double bond
- The 5 types of cholorophyll?
- a b c d e
- The most important chlorophylls in normal photosynthesis?
- A and B
- cholorophyll A has which subgroup?
- CH3
- cholorophyll B has which subgroup?
- CHO
- cholorophyll A and B both absorb ____, ________, and _______ light
- violet, blue, and red
- Who showed that green plants use specific wavelengths of light more than others
- Englemann
- Most plants use a mixture of at least _ chlorophylls because ___________
- 2, other pigments absorb different wavelengths
- What are some human light absorbing pigments?
- Retinol and melanin
- Vitamin A is a precursor to?
- Retinol
- The chloroplast is not a cell, it is a
- organelle (hey that rhymed)
- Chlorophyll is a _____ bound organelle
- phospholipid membrane
- Most mesophyll plant cell have __ - __ chloroplasts
- 40 - 50
- What is the green part of plants? Dont say the leaves.
- photosystems
- The space inside the thylakoid sac is called the?
- thylakoid space
- the dense beige liquid surrounding the thylakoids?
- stroma
- Who said that photosynthesis is a two step process?
- F.F. Blackman
- Which reaction charges up the batteries ATP and NADPH, by doing photolysis on water?
- The Light Dependent Reaction, or the light rxn, or the non-cyclic phosphorylation
- Which reaction does CO2 fixation, and also makes glucose?
- The Light independent Reaction, or the dark rxn, or the Calvin Cycle, or the C-3 Cycle
- The Light _________ Rxn uses photosystems
- dependent
- Photosystem I absorbs heavy at
- 700nm
- Photosystem II absorbs heavy at
- 680nm
- The light dependent reaction happens in the
- thylakoid membrane
- The light independent reaction happens in the
- stroma liquid