1) The function of a protein is determined by its shape. The shape of a protein is determined by its primary structure. The sequence of amino acids in a protein is determined by the sequence of nucleotides in the gene DNA encoding it.
To reduce the risks of cross contamination when performing cpr, we should try, as far as possible, and if conditions permit, practice cpr in a clean environment of any chemical or physical waste, that the person who is performing the procedure doesn´t have any respiratory disease that can make the situation worse, having clean hands not to contaminate the patient, keep other people away so fresh air can flow freely.
Near point refers to the closest distance on which the eye can focus. So any activity where your eyes are focusing hard on the object right in front of you could be considered important when it comes to near point. Some of those activities could be reading, using the microscope, sewing, etc.
yes B is the correct answer