Question

of life forms. understanding photosynthesis is crucial for addressing environmental challenges and ensuring the sustainability of our planet. as we continue to explore the intricacies of this process, we gain valuable insights into the interconnectedness of life and the environment.

1. what is the primary function of photosynthesis?

a) produce carbon dioxide and water b) convert light energy into chemical energy stored in glucose
c) convert chemical energy into light energy d) break down glucose into carbon dioxide and water

1. where in the plant cell does photosynthesis primarily occur?

a) mitochondria b) nucleus
c) ribosomes d) chloroplasts

1. which of the following is a byproduct of the light - dependent reactions in photosynthesis?

a) glucose b) carbon dioxide
c) oxygen d) atp

1. what role do atp and nadph play in the calvin cycle?

a) they release oxygen b) they split water molecules
c) they provide energy to convert carbon dioxide into glucose d) they capture light energy

1. how does photosynthesis help mitigate climate change?

a) by reducing the need for sunlight b) by producing more glucose
c) by increasing atmospheric carbon dioxide levels d) by absorbing carbon dioxide and releasing oxygen

Explanation:

Question 1

Photosynthesis uses light energy to convert carbon dioxide and water into glucose (storing chemical energy) and oxygen. Option a is incorrect as it produces glucose and oxygen, not CO₂ and H₂O. Option c is the reverse of what happens. Option d describes cellular respiration. So the correct function is converting light to chemical energy in glucose.

Mitochondria are for cellular respiration, nucleus for genetic material, ribosomes for protein synthesis. Chloroplasts contain chlorophyll and are the site of photosynthesis in plant cells.

Light - dependent reactions split water, producing oxygen as a by - product. Glucose is made in the Calvin cycle (light - independent). Carbon dioxide is a reactant, and ATP is an energy carrier but not a by - product of light - dependent reactions in the same sense as oxygen.

Answer:

b) Convert light energy into chemical energy stored in glucose

Question 2