OBJECTIVE LIFE SCIENCE
EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Nucleic Acids
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Carbohydrates
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DNA
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Proteins
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Detailed explanation-1: -DNA and RNA are the mechanisms for inheritance and gene activity in all living organisms. The structure of the genetic code is almost identical in all living things. This uniformity in biochemical organization underlies the diversity of living things and points to evolutionary relationships.
Detailed explanation-2: -All living organisms share fundamental molecules essential for life: DNA (deoxyribonucleic acid), RNA (ribonucleic acid), and proteins. In order to understand the evolutionary history of organisms, scientists compare these molecules between life forms, and also study patterns of change.
Detailed explanation-3: -One class of biochemical evidence of evolution, homologous molecules, is biochemicals that are very similar in structure and function in all organisms. An example of a homologous protein is cytochrome c. This protein is found in almost all living cells and plays a key role in cellular respiration.