20.4 21.3 are the correct answers
Https://www.ncbi.nlm.nih.gov/pubmed/8300084
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Answer:
Once a cell becomes specialized, it has essentially differentiated into a particular cell type with a particular structure and function. An example of a specialized cell is a red or white blood cell, integumentary or digestive cell, etc
Explanation:
All the options are incorrect. The correct answer will be THE NUMBER OF HYDROGEN IONS MOVING DOWN THE PROTEIN CHANNEL.
A proton pump is found in the inner membrane of mitochondria which is also known as hydrogen ion pump. The hydrogen ion is pumped across the inner mitochondrial membrane depending on the proton gradient.
Answer: make systematic observations and carefully collect relevant evidence.Then they use logical reasoning and some imagination to develop hypotheses and explanations.
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Explanation:
