Autotrophs vs Heterotrophs: Photosynthesis and Cellular Respiration

Play an AI-generated podcast conversation about this lesson

What is the source of oxygen produced during photosynthesis?

C6H12O6
CO2
H2O (correct)
Chlorophyll

What is the primary function of stomata in the leaf?

To allow CO2 to enter and O2 to exit (correct)
To convert solar energy into chemical energy
To produce chlorophyll
To absorb water from the roots

In which part of the leaf are chloroplasts concentrated?

Thylakoid space
Mesophyll cells (correct)
Stomata
Leaf veins

What is the role of chlorophyll in photosynthesis?

To absorb solar energy and convert it into chemical energy (B) Signup and view all the answers

What is the purpose of the inner and outer membranes of the chloroplast?

To separate the chloroplast's internal compartments (C) Signup and view all the answers

What is the primary role of autotrophs in the biosphere?

To produce organic molecules from inorganic compounds (B) Signup and view all the answers

What is the product of the reaction 6 CO2 + 12 H2O →?

C6H12O6 + 6 H2O + 6 O2 (B) Signup and view all the answers

What is the by-product of photosynthesis that is essential for other metabolic processes?

Oxygen (B) Signup and view all the answers

Which of the following organisms is most likely to be a heterotroph?

Human (B) Signup and view all the answers

What is the primary source of energy for photosynthesis?

Solar energy from the sun (A) Signup and view all the answers

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? (A) Signup and view all the answers

What is the opposite of an anabolic process?

Catabolic process (D) Signup and view all the answers

What is the primary function of the thylakoid membranes in chloroplasts?

To convert light energy into chemical energy (D) Signup and view all the answers

What is the by-product of the light-dependent reaction in photosynthesis?

Oxygen (B) Signup and view all the answers

Where do the light-independent reactions of photosynthesis occur?

In the stroma of the chloroplast (C) Signup and view all the answers

What is the energy currency generated during the light-dependent reaction?

ATP (D) Signup and view all the answers

What is the role of chlorophyll molecules in photosynthesis?

To capture light energy and convert it into chemical energy (D) Signup and view all the answers

What is the primary function of the Calvin Cycle in photosynthesis?

To synthesize sugar molecules from CO2 using ATP and NADPH (C) Signup and view all the answers

What is the primary function of carbon fixation in the process of converting solar energy into chemical energy?

To incorporate CO2 into organic compounds (A) Signup and view all the answers

What is the nature of electromagnetic energy in sunlight?

It travels in waves and consists of a range of wavelengths (B) Signup and view all the answers

What is the effect of a shorter wavelength of light on the energy of a photon?

It increases the energy of the photon (C) Signup and view all the answers

What is the primary function of pigments in the process of photosynthesis?

To absorb visible light and drive light reactions (C) Signup and view all the answers

What is the characteristic of light that is transmitted by chlorophyll?

It is green in color (D) Signup and view all the answers

What is the location of plant pigments in the chloroplast?

In the thylakoid membrane (C) Signup and view all the answers

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 (B) Signup and view all the answers

What is the outcome of the light-driven electron flow in the light reactions?

The generation of ATP and NADPH (D) Signup and view all the answers

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 (D) Signup and view all the answers

Where are ATP and NADPH produced in the chloroplast?

On the side of the thylakoid membrane facing the stroma (A) Signup and view all the answers

What is the result of the increase in potential energy of electrons in the light reactions?