Cellular homeostasis involves maintaining a balance of several factors that make a cell healthy. The cell membrane is a lipid bilayer that prevents that passage of water and ions. This allows cells to maintain a higher concentration of sodium ions out the outside of the cell.
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organisms that have more favorable traits tend to leave more offspring ... improved fitness of certain individuals in the population that allows for survival and reproduction. ... Based on H-W conditions, five major causes of evolution: ... factors that prevent organisms of two species from producing vigorous, fertile offspring
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Proteins play a role in transport, enable movement, provide structure and support, and help make chemical reactions happen.
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I'm not quite sure if this was your question, but these are the functions of protiens.
D is the answer. Mutations can cause MANY problems.
The mitochondria is the main energy-producing organlle both in plants and animals