<span>One-fifth of earth's total fresh water supply is in groundwater. Groundwater supplies drinking water for 51% of the US population and 99% of the rural population. A full 64% of groundwater is used for irrigation to grow crops in the US.</span>
Motor neurons are involved in the skeletal muscle contractions in vertebrates, as the process is a synaptic one. These occur due to a conscious effort by the brain, from which these signals originate. In some reflexes, the signal originates from the spinal cord.
Hydrophobic amino acids are buried at the core of a water-soluble globular protein.
<h3>What makes globular proteins water soluble?</h3>
Numerous hundreds to thousands of amino acids are used to make proteins. The arrangement of amino acids within a protein molecule determines its ultimate form. A protein molecule is classified into two classes—fibrous proteins and globular proteins—based on its final shape.
The structure of globular proteins resembles a ball or a globe. A globular structure is created by the folding of different amino acid chains. The two most significant globular proteins present in the human body are hemoglobin and myoglobin. The hydrophobic side chains of the amino acids are hidden inside the cores of the domains whereas the hydrophilic side chains are located on the surface of the molecule thanks to the arrangement of the amino acids.
The hydrophobic amino acids can be buried in the center of globular proteins due to interactions between the hydrophobic groups in their side chains. This is the fundamental property of globular proteins that makes them water soluble.
Examples of hydrophobic amino acids are phenylalanine, alanine, valine, etc.
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Prokaryotic cells lack some organelles while eukaryotic do not.
prokaryotic cells are often unicellular, while eukaryotics are often multicellular
prokaryotic cells do not have a nucleus, while eukaryotic cells have nucleus
The cheek cells, withal called epithelium cells, are responsible for maintaining moisture in the oral cavity which in turn avails in digestion, intenerating pabulum for consumption and facilitating swallowing.
The lysosome is the cell’s recycling center. These organelles are spheres full of enzymes yare to hydrolyze whatever substance crosses the membrane, so the cell can reuse the raw material.