Dental Admissions Test (DAT) Practice Test

Disable ads (and more) with a membership for a one time $2.99 payment

Enhance your preparation for the Dental Admissions Test with our comprehensive DAT practice quizzes featuring insightful hints and detailed explanations. Get ahead in your dental career journey!

Practice this question and more.

What is the first macromolecule that formed on earth?

Morula
Oxygen
Nondisjunction
Nucleolus

The correct answer is: Oxygen

The first macromolecule that formed on Earth is oxygen. This is because oxygen is essential for the process of photosynthesis, which is the primary method of energy production for many living organisms. The other options, such as Morula, Nondisjunction, and Nucleolus, are incorrect as they are not macromolecules. Morula is a stage in embryonic development, Nondisjunction is a chromosomal abnormality, and Nucleolus is a structure found in the nucleus of a cell.