Exercise 4: Photosynthesis
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It refers to organisms that produce their own food through photosynthesis.
photoautotrophic organisms
In which metabolic processes do plants use glucose?
cellular respiration
TRUE or FALSE: Glucose can also be stored in the form of starch.
True
Complete the following sentence: Photosynthesis requires which susbtance in order to produce sugar and oxygen as products.
carbon dioxide
On the experiment, which substances were utilized to determine the role of carbon dioxide in photosynthesis?
• phenol red • 1% sodium bicarbonate
Which substance is formed when carbon dioxide mixes with water?
carbonic acid
It refers to the movement of chloroplasts around the cytoplasm to optimize light absorption for photosynthesis.
cyclosis
Which molecules within the chloroplasts aid in photosynthesis?
chlorophyll molecules
Give the scientific name of dumbcane.
Graptophyllum pictum
It refers to the process of separating complex mixtures into their component parts based on their solubility in different types of solvents.
chromatography
Which substance was used to prepare the liquid extract for the spots in chromatography?
acetone
Which solvent was used in the chromatography?
petroleum-ether acetone
Give the formula for the retention factor.
Rf = (distance travelled by the pigment) / (distance travelled by the solvent)
Give the Rf value of the carotene pigment.
0.99
Give the Rf value of the chlorophyll a pigment
0.30
Give the Rf value of the chlorophyll b pigment.
0.13
Give the Rf value of the xanthophyll pigment.
0.40 - 0.68