LIFE SCIENCE

OBJECTIVE LIFE SCIENCE

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The first organisms to appear on Earth were formed from simple organic aggregates. These organisms were called heterotrophs.Which type of energy-releasing process was most likely performed by those first heterotrophs?
A
aerobic respiration
B
anaerobic respiration
C
photosynthesis
D
protein synthesis
Explanation: 

Detailed explanation-1: -According to the heterotroph hypothesis, the first forms of life on the Earth probably obtained energy by anaerobic respiration.

Detailed explanation-2: -Photoautotrophs must have evolved before aerobic organisms evolved.

Detailed explanation-3: -Similar DNA sequences are the strongest evidence for evolution from a common ancestor.

Detailed explanation-4: -Which statement best describes the evolution of cells on Earth? Both chemical and organic evolution occurred simultaneously. Chemical evolution occurred first, eventually making organic evolution possible.

There is 1 question to complete.