Protein folding is the physical process by which a protein chain acquires its native 3-dimensional structure, a confirmation that is usually biologically functional, in an expeditious and reproducible manner. It is the physical process by which a polypeptide folds into its characteristic and functional three-dimensional structure from random coil. Each protein exists as an unfolded polypeptide or random coil when translated from a sequence of mRNA to a linear chain of amino acids. This polypeptide lacks any stable (long-lasting) three-dimensional structure (the left-hand side of the first figure). As the polypeptide chain is being synthesized by the ribosome, the linear chain begins to fold into its three-dimensional structure. Folding begins to occur even during translation of the polypeptide chain. Amino acids interact with each other to produce a well-defined three-dimensional structure, the folded protein (the right-hand side of the figure), known as the native state<span>.</span>
Found inside the nucleus<span>. It is where ribosomes are made.</span>
<span>Phosphorus cycles between living things and the environment, particularly the soil. This is the case with many other substances as well such as carbon. The cycling occurs due to the action of organisms which uptake and release phosphorus into the soil. Phosphorus exists in animals in many forms, particularly in the ATP molecule. When the animal dies, its remains are decomposed and the constituent ions are released into the soil, after which they are taken up by plants. Animals consuming these plants gain the phosphorus again, and the cycle continues.</span>
Answer:
These apparent star tracks are in fact not due to the stars moving, but to the rotational motion of the Earth. ... As the Earth rotates with an axis that is pointed in the direction of the North Star, stars appear to move from east to west in the sky.
Answer: Option C
Explanation: Respiration is the process that involves the exchange of gases. The oxygen from the mouth is move inside the body and the carbon dioxide from the body is moved out of the body by the process of diffusion.
The movement of the carbon dioxide gas out of the body follows a certain path inside the body.
This path starts from Alveoli → bronchus → trachea → larynx → pharynx → nose. This is how the carbon dioxide moves out of the body.