1. which sequence shows the transfer of oxygen for use by the body? a, air, lungs, blood, cells, cellular respiration b, cellular respiration, blood, lungs, air c, food, digestive tract, cells, cellular respiration d, air, lungs, digestive tract, cellular respiration

A

Explanation:

Air enters the lungs from the atmosphere and through the airwaves (trachea and bronchioles). When it gets to the lungs, air exchange occurs in the capillaries with oxygen getting into the blood while carbon dioxide gets out. This exchange is based on diffusion gradients. The blood transports the dissolved oxygen to the tissues and cells and is also taken up by diffusion. The oxygen is then used as a proton acceptor in cellular respiration in the Krebs cycle.  

small, big, or no change could occur in the phenotype. it could cause something as simple as a cats ears to curl backwards or something as frighting as death. it could also occur in the protien-coding area and have an effect on that but no effect on the amino acids. what has to occur is a changing in the hox gene or the control gene.