BIO||BIO FINAL LAB PRACTICUM
(BILOGICAL PROCESS IN PLANT)
LATEST UPDATE 2024/25 A+ GRADED
Be able to describe the process of photosynthesis. (CORRECT
ANSWER) co2 + h2o + energy => glucose + o2
1. LDR in thylakoid membrane: chlorophyll a absorbs light energy
which leads to ATP, oxygen, and NADPH
2. LIR in stroma: Carbon dioxide is taken in, and glucose is released
Why do leaves change color in autumn? (CORRECT ANSWER) The
chlorophyll breaks down, the green color disappears, and other colors
become visible
Explain how CO2 is "fixed" by this plant (elodea), what does this mean?
(CORRECT ANSWER) phenol red turns yellow when CO2 is added to
the substance, making it an acidic
a plant added to the solution will "fix" the co2 into oxygen and glucose
and cause the pH to rise, solution turning red
carbon fixation (CORRECT ANSWER) process of converting co2 into
an organic molecule
Where did the CO2 come from? (CORRECT ANSWER) our breath
, What does the Rf value represent? Know how to calculate it too!
(CORRECT ANSWER) Rf= distance moved by the pigment / distance
moved by the solvent
rate of migration
Name three properties that affect how far and how fast a particular
pigment's molecules will move up the chromatography paper with the
solvent. (CORRECT ANSWER) 1. absorption: molecules that absorb
better tend to move slower
2. size: larger molecules move slower
3. solubility: more soluble molecules move faster and further
What does boiling the leaf in water do? What does boiling the leaf in
95% ethanol do? (CORRECT ANSWER) -boil leaves in boiling water -
> denaturation, kills tissues and destroy internal membranes where
pigments are
-boil in ethanol -> to remove pigments, test for starch with lugol's
solution
Describe the process of aerobic respiration and the process of
fermentation. how many ATPs are formed? (CORRECT ANSWER) -
aerobic: Cellular respiration uses glucose and oxygen to make water,
carbon dioxide, and 36 ATP
-fermentation: produces ethanol/co2 and lactic acid in the absence of
oxygen, 2 ATP
(BILOGICAL PROCESS IN PLANT)
LATEST UPDATE 2024/25 A+ GRADED
Be able to describe the process of photosynthesis. (CORRECT
ANSWER) co2 + h2o + energy => glucose + o2
1. LDR in thylakoid membrane: chlorophyll a absorbs light energy
which leads to ATP, oxygen, and NADPH
2. LIR in stroma: Carbon dioxide is taken in, and glucose is released
Why do leaves change color in autumn? (CORRECT ANSWER) The
chlorophyll breaks down, the green color disappears, and other colors
become visible
Explain how CO2 is "fixed" by this plant (elodea), what does this mean?
(CORRECT ANSWER) phenol red turns yellow when CO2 is added to
the substance, making it an acidic
a plant added to the solution will "fix" the co2 into oxygen and glucose
and cause the pH to rise, solution turning red
carbon fixation (CORRECT ANSWER) process of converting co2 into
an organic molecule
Where did the CO2 come from? (CORRECT ANSWER) our breath
, What does the Rf value represent? Know how to calculate it too!
(CORRECT ANSWER) Rf= distance moved by the pigment / distance
moved by the solvent
rate of migration
Name three properties that affect how far and how fast a particular
pigment's molecules will move up the chromatography paper with the
solvent. (CORRECT ANSWER) 1. absorption: molecules that absorb
better tend to move slower
2. size: larger molecules move slower
3. solubility: more soluble molecules move faster and further
What does boiling the leaf in water do? What does boiling the leaf in
95% ethanol do? (CORRECT ANSWER) -boil leaves in boiling water -
> denaturation, kills tissues and destroy internal membranes where
pigments are
-boil in ethanol -> to remove pigments, test for starch with lugol's
solution
Describe the process of aerobic respiration and the process of
fermentation. how many ATPs are formed? (CORRECT ANSWER) -
aerobic: Cellular respiration uses glucose and oxygen to make water,
carbon dioxide, and 36 ATP
-fermentation: produces ethanol/co2 and lactic acid in the absence of
oxygen, 2 ATP
