Answer:
a mutation in the cells that causes malignant cells to develop
Explanation:
Chloroplast is the same as solar cell ! because it traps energy of the sun and helps in formation of food , made by plant !
D. Biological activity
Explanation:
The earth's atmosphere became oxygen rich as a result of biological activities. Early earth atmosphere was toxic one and in its reducing state.
- The activities of micro-organisms such as cyanobacteria led to the production of oxygen.
- These organisms manufacture their food in the presence of sunlight and water in the process of photosynthesis.
- The bye product of this reaction is oxygen.
- The intense presence of these living organisms led to the surge in atmospheric oxygen.
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The answer is <span>A. all refer to the synthesis of macromolecules.
Let's go through all choices:
</span><span>A. all refer to the synthesis of macromolecules. - CORRECT - DNA, RNA, and proteins are macromolecules. Replication refers to DNA synthesis, transcription refers to the RNA synthesis, and translation refers to protein synthesis.
B. - INCORRECT - because of the word <em>respectively</em>. It would mean that replication refers to RNA synthesis and transcription refers to the DNA synthesis which is not true.
C. - INCORRECT - none of those molecules requires polysaccharides synthesis.
D. - INCORRECT - exergonic reactions involve releasing of energy while mentioned processes use energy.
E. - INCORRECT - nucleotides are building blocks only for DNA and RNA. Building blocks of proteins are amino acids.</span>