Each protein has its unique sequence and number of amino acids. This determines their 3-D structure as well. The properties of the protein are also attributed to the unique sequence and number of amino acids present in it. Different sequence and number denote that the two proteins are different, and have different structure and properties.
Photoreceptor proteins are light-sensitive proteins involved in the sensing and response to light in a variety of organisms. Some examples are rhodopsin in the photoreceptor cells of the vertebrate retina,phytochrome in plants, and bacteriorhodopsin<span> and bacteriophytochromes in some bacteria.
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Answer:
I NEED SOME POINTS TO ASK A QUESTION.
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There are four categories for air masses: arctic, tropical, polar and equatorial. Arctic air masses form in the Arctic region and are very cold.
