Exercise 5: Respiration
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It refers to the cellular process where organic compounds are broken down enzymatically to release chemical energy.
respiration
Which molecule is derived from the chemical energy released in cellular respiration?
adenosine triphosphate (ATP)
In autotrophs, the organic compounds utilized in cellular respiration are derived from?
photosynthetic products (e.g. glucose)
Differentiate the 2 types of cellular respiration.
• aerobic - occurs only in the presence of oxygen • anaerobic - occurs without the presence of oxygen
Enumerate the factors that can influence the rate at which respiration occurs.
• temperature • susbtrate
It refers to the reducing substance used on the aerobic respiration experiment.
alkaline pyrogallol
It refers to the by-product of cellular respiration.
carbon dioxide
Give the chemical formula of carbon dioxide and barium hydroxide interaction.
CO2 + Ba(OH)2 = BaCO3 + H2O
It refers to the white precipitate formed in CO2 - Ba(OH)2 interaction.
barium carbonate
Give the 3 substances used on the experiment involving carbon dioxide synthesis in fermentation.
• saturated barium hydroxide solution • yeast-glucose suspension • 10% glucose
Which fungal microorganism undergoes anaerobic respiration?
yeast
It refers to the process that yeasts undergo to extract chemical energy from glucose.
fermentation
TRUE or FALSE: The energy yield in anaerobic respiration is less for every glucose molecule compared to aerobic respiration.
True
Give the monosaccharide components of sucrose.
glucose and fructose
Give the substances used on the experiment on substrate composition in fermentation.
• 10% glucose • yeast suspension • yeast-glucose suspension • yeast-sucrose suspension
TRUE or FALSE: Anaerobic and aerobic respirations have different enzymatic pathways in ATP synthesis.
True
Give the 4 different temperature conditions where the fermentation tubes were exposed to on the experiment.
• refrigerator (4 degrees C) • room temperature (23 degrees C) • warm water bath (40 degrees C) • hot water bath (80 degrees C)