early experiments Flashcards
who performed a series of experiment to reveal that air is important in the growth of plants?
joseph priestly
who discovered oxygen?
priestly
who showed that sunlight is essential to the plant process as it purifies the air fouled by burning candles or animals?
jan ingenhousz
who provided evidence of glucose when plants grow?
von sachs
glucose in plats is stored as _ and made by _?
starch and made in chlorophyll
who discovered the first action spectrum? in the spectral coposition which algae was used? and to which class it belonged to ?
which bacteria were used to detect site of o2 evolution? in which region did the bacteria grow? it resembled the absorption of which spectra?
tw engelmann
cladophora, green algae
aerobic bacteria
blue and red light region
chl a and chl b
who discovered that photosynthesis is a light dependant process? what bacteria did he use?
van niel
purple and green bacteria
what was the hypothesis of van niel
photosynthesis is a light dependant process in which hydrogen from a oxidisable comound reduces co2 to carbs
in green plants __ is the hydrogen donor and is oxidised into __
h2, 02
in purple and green bacteria what is the hydrogen donor and now the process is __ dependant
h2s
sulphur dependant
chlorophyll are present in ___ cells of leaf
mesophyll
when do chloroplast align themselves perpendicular and parallel to the surface of mesophyll
parallel- evening
perpendicular- day
what is function of membranous system ie grana
1 traps light energy
2 synthesis of atp and nadph
what is the function of stroma
enzymatic reaction takes place in them (synthesis of sugar which turns into starch)
light reaction are also called_.
photochemical rxns
