Lab Exercis 6 Flashcards
(21 cards)
What molecules move furthest up chromatography strip?
Pigments with fewer polar groups are more soluble in the non-polar solvent, and less attracted to polar paper, so they migrate farther.
What is the structure of chloroplast?
Photosynthetic pigments are embedded in the thylakoid membranes, organized into grana. The fluid surrounding the grana is the stroma.
What makes up the lead structure?
Epidermis, palisade, spongy mesophyll, and xylem and phloem, and guard cells.
What is the cell in the epidermis that contains chloroplasts?
Guard cells.
What is the function of guard cells?
Surround the strona and regulate opening and closing if stromata, to facilitate exchange of gases.
Where does the majority of photosynthesis occur in cell layers?
Palisade mesophyll and spongy mesophyll.
What it the function of xylem?
Transport water from roots to plant.
What is the function of phloem?
Transport food and nutrients from leaves to rest of plant.
What colour pigment leaves the leaf when placed in heat?
Red pigment.
What pigment is extracted in alcohol?
Green.
What is the pigment solubilty?
Soluble in alcohol.
What compound reacts with iodine? What colour results in a positive reaction?
Starch. A deep blue black colour.
What organelle stores starch?
Amyloplast.
Why doesnt one of the leaves react with iodine?
The plant isnt photosynthesizing therefore it is not producing glucose or starch.
What is chromatography?
Separates the pigments in a mixture in the basis of their polarities.
What does alcohol fermentation produce?
CO2 and ethanol.
What fermentation do humans perform?
Lactic acid fermentation.
What colour does methylene blue turn when it is reduced?
Dyd goes from blue to colourless. During cellular respiration l, electrons are shed and the dye accepts electrons to become colourless.
Do germinating seeds produce heat?
Yes because they perform CR which releases heat.
What does pulse oximeter detect?
Detects a persons oxygen saturation level, which is the percent of hemoglobin in arterial RBC’s that carry oxygen.
Where do all stages of cellular respiration occur in the mitochondrian?
Glycolysis in cytosol.
Calvin cycle occurs in the mitochondrial matrix.
ETC in the inner mitochondrial membrane.
