30 Questions
What is the source of oxygen produced during photosynthesis?
H2O
What is the primary function of stomata in the leaf?
To allow CO2 to enter and O2 to exit
In which part of the leaf are chloroplasts concentrated?
Mesophyll cells
What is the role of chlorophyll in photosynthesis?
To absorb solar energy and convert it into chemical energy
What is the purpose of the inner and outer membranes of the chloroplast?
To separate the chloroplast's internal compartments
What is the primary role of autotrophs in the biosphere?
To produce organic molecules from inorganic compounds
What is the product of the reaction 6 CO2 + 12 H2O →?
C6H12O6 + 6 H2O + 6 O2
What is the by-product of photosynthesis that is essential for other metabolic processes?
Oxygen
Which of the following organisms is most likely to be a heterotroph?
Human
What is the primary source of energy for photosynthesis?
Solar energy from the sun
What was the question scientists were trying to answer when they traced the process of photosynthesis using isotopes?
Does this oxygen come from CO2 or H2O?
What is the opposite of an anabolic process?
Catabolic process
What is the primary function of the thylakoid membranes in chloroplasts?
To convert light energy into chemical energy
What is the by-product of the light-dependent reaction in photosynthesis?
Oxygen
Where do the light-independent reactions of photosynthesis occur?
In the stroma of the chloroplast
What is the energy currency generated during the light-dependent reaction?
ATP
What is the role of chlorophyll molecules in photosynthesis?
To capture light energy and convert it into chemical energy
What is the primary function of the Calvin Cycle in photosynthesis?
To synthesize sugar molecules from CO2 using ATP and NADPH
What is the primary function of carbon fixation in the process of converting solar energy into chemical energy?
To incorporate CO2 into organic compounds
What is the nature of electromagnetic energy in sunlight?
It travels in waves and consists of a range of wavelengths
What is the effect of a shorter wavelength of light on the energy of a photon?
It increases the energy of the photon
What is the primary function of pigments in the process of photosynthesis?
To absorb visible light and drive light reactions
What is the characteristic of light that is transmitted by chlorophyll?
It is green in color
What is the location of plant pigments in the chloroplast?
In the thylakoid membrane
What is the primary function of chlorophyll a in the light reactions?
To participate directly in the light reactions, absorbing mainly blue-violet and red light
What is the outcome of the light-driven electron flow in the light reactions?
The generation of ATP and NADPH
What is the role of carotenoids in the light reactions?
To provide photoprotection by absorbing excessive light energy and broadening the spectrum used for photosynthesis
Where are ATP and NADPH produced in the chloroplast?
On the side of the thylakoid membrane facing the stroma
What is the result of the increase in potential energy of electrons in the light reactions?
The generation of ATP and NADPH
What is the relationship between the light reactions and the Calvin cycle in photosynthesis?
The light reactions produce ATP and NADPH, which are used in the Calvin cycle
Learn about the differences between autotrophs and heterotrophs, including their characteristics and roles in the biosphere. Understand how autotrophs produce organic molecules through photosynthesis and how heterotrophs obtain organic material through ingestion. A quiz for BIOL S103F Essential Biology Week 6.
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