Answer:
The correct answer is - on the surface.
Explanation:
Proteins are made up of long chains called polypeptide chains made up of amino acid residues linked together. These amino acid residues could be hydrophobic or hydrophilic in nature. Hydrophilic is the nature of water-loving whereas hydrophobic is that tries to avoid water.
So, if a protein placed inside the water the hydrophilic amino acids will be present on the surface of the protein, and hydrophobic amino acids present inside of the protein structure.
Well the picture could help :)
Prokaryotes have no organelles, such as the nucleus, and are often the only cell for single-celled organisms. Eukaryotes have organelles such as the nucleus and mitochondria, and are found in multicellular organisms.
Answer:
Cells make up the smallest level of a living organism such as yourself and other living things. The cellular level of an organism is where the metabolic processes occur that keep the organism alive. That is why the cell is called the fundamental unit of life.