Exam 4- Marine Science UPDATED
ACTUAL Exam Questions and CORRECT
Answers
Photosynthesis equation- primary productivity - CORRECT ANSWER - water + carbon
dioxide (light energy input, arrows pointing to it) to sugar + oxygen
What does photosynthesis do in primary productivity - CORRECT ANSWER - Coverts
light into chemical energy, producing glucose and sugar,
Respiration equation- primary productivity - CORRECT ANSWER - water + carbon
dioxide (energy output arrows pointing away) from sugar + oxygen.
what does respiration do in primary productivity - CORRECT ANSWER - Breaks down
glucose for energy.
Equation for both photosynthesis and respiration- primary productivity - CORRECT
ANSWER - 6H20 + 6CO2 + (up top) light energy (arrow right) photosynthesis (down)
heat (arrow left) respiration C6H12)6 +6O2
Explain Primary Productivity in Coast and Middle of Ocean - CORRECT ANSWER -
Coast: high due to nutrients influxes from rivers and upwelling
Middle of the ocean: due to nutrient scarcity
Terms for high and low productivity areas - CORRECT ANSWER - Eutrophic: High
Productivity areas
Oligotrophic: Low productivity areas
What pigment parameter do marine scientists use to measure phytoplankton biomass and what is
the reason for it? - CORRECT ANSWER - chlorophyll a is used to measure phytoplankton
biomass because phytoplankton use chlorophyll to convert sunlight into organic matter:
, Describe three techniques in how it gets measured - CORRECT ANSWER - Fluorometry:
measures fluoresce emitted by chlorophyll a
Spectrometry: measure light absorption by chlorophyll a
HPLC: separates and quantifies pigment.
How is primary productivity measured? - CORRECT ANSWER - determined by
measuring the uptake of carbon dioxide or the output of oxygen.
HPLC use - CORRECT ANSWER - measures the concentration and types of pigments in
water samples, helping to identify different phytoplankton species.
Steps in which to measure Chlorophyll a - CORRECT ANSWER - 1. Collect water
samples
2. Filter water to trap phytoplankton
3. Extract chlorophyll a using acetone or ethanol
4. Analyze the extract using fluorometry, spectrophotometry or HLPC
Plankton - CORRECT ANSWER - Organism that drift with water currents (ex
phytoplankton, zooplankton)
Nekton - CORRECT ANSWER - Actively swimming organism (ex: fish)
Plankton Classification - CORRECT ANSWER - Phytoplankton ( plant-like) Zooplankton
(animal-like) bacterioplankton (bacteria)
Holoplankton - CORRECT ANSWER - Whole life spent as plankton (Ex: copepods)
Permanently Plankton
ACTUAL Exam Questions and CORRECT
Answers
Photosynthesis equation- primary productivity - CORRECT ANSWER - water + carbon
dioxide (light energy input, arrows pointing to it) to sugar + oxygen
What does photosynthesis do in primary productivity - CORRECT ANSWER - Coverts
light into chemical energy, producing glucose and sugar,
Respiration equation- primary productivity - CORRECT ANSWER - water + carbon
dioxide (energy output arrows pointing away) from sugar + oxygen.
what does respiration do in primary productivity - CORRECT ANSWER - Breaks down
glucose for energy.
Equation for both photosynthesis and respiration- primary productivity - CORRECT
ANSWER - 6H20 + 6CO2 + (up top) light energy (arrow right) photosynthesis (down)
heat (arrow left) respiration C6H12)6 +6O2
Explain Primary Productivity in Coast and Middle of Ocean - CORRECT ANSWER -
Coast: high due to nutrients influxes from rivers and upwelling
Middle of the ocean: due to nutrient scarcity
Terms for high and low productivity areas - CORRECT ANSWER - Eutrophic: High
Productivity areas
Oligotrophic: Low productivity areas
What pigment parameter do marine scientists use to measure phytoplankton biomass and what is
the reason for it? - CORRECT ANSWER - chlorophyll a is used to measure phytoplankton
biomass because phytoplankton use chlorophyll to convert sunlight into organic matter:
, Describe three techniques in how it gets measured - CORRECT ANSWER - Fluorometry:
measures fluoresce emitted by chlorophyll a
Spectrometry: measure light absorption by chlorophyll a
HPLC: separates and quantifies pigment.
How is primary productivity measured? - CORRECT ANSWER - determined by
measuring the uptake of carbon dioxide or the output of oxygen.
HPLC use - CORRECT ANSWER - measures the concentration and types of pigments in
water samples, helping to identify different phytoplankton species.
Steps in which to measure Chlorophyll a - CORRECT ANSWER - 1. Collect water
samples
2. Filter water to trap phytoplankton
3. Extract chlorophyll a using acetone or ethanol
4. Analyze the extract using fluorometry, spectrophotometry or HLPC
Plankton - CORRECT ANSWER - Organism that drift with water currents (ex
phytoplankton, zooplankton)
Nekton - CORRECT ANSWER - Actively swimming organism (ex: fish)
Plankton Classification - CORRECT ANSWER - Phytoplankton ( plant-like) Zooplankton
(animal-like) bacterioplankton (bacteria)
Holoplankton - CORRECT ANSWER - Whole life spent as plankton (Ex: copepods)
Permanently Plankton
