Multiple Choice
Why are viruses considered nonliving entities in the context of organic chemistry?
429
views
1. A Review of General Chemistry
Intro to Organic Chemistry
Struggling with Organic Chemistry?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following were the earliest oxygen-producing life-forms?
A
Cyanobacteria
B
Protozoa
C
Algae
D
Fungi
Verified step by step guidance1
Understand the context of the question: The question is asking about the earliest oxygen-producing life-forms on Earth, which is a topic related to the history of life and evolution.
Identify the key term: 'oxygen-producing life-forms'. These are organisms that perform photosynthesis, releasing oxygen as a byproduct.
Consider the options given: Cyanobacteria, Protozoa, Algae, and Fungi. Evaluate which of these are known for photosynthesis and oxygen production.
Recall historical and biological facts: Cyanobacteria are known to be among the earliest organisms to perform photosynthesis, significantly contributing to the oxygenation of Earth's atmosphere.
Conclude based on evidence: Cyanobacteria are widely recognized as the earliest oxygen-producing life-forms, predating other groups like algae, protozoa, and fungi in this specific function.
2:08mWatch next
Master Organic molecules in your everyday life. with a bite sized video explanation from Johnny
Start learningRelated Videos
Related Practice
Intro to Organic Chemistry practice set
Problem sets built by lead tutorsExpert video explanations