Lungs serve the purpose of gas exchange. We inhale air, drawing in oxygen (O2) and exhale air, expelling carbon dioxide (CO2). Both of these molecules are small and nonpolar, and therefore freely pass though membrane bilayers of cells in the lungs. Based on this information, the movement of O2 from the alveoli of the lungs into the bloodstream is an example of

photosynthesis makes the glucose that is used in cellular respiration to make atp. the glucose is then turned back into carbon dioxide, which is used in photosynthesis. while water is broken down to form oxygen during photosynthesis, in cellular respiration oxygen is combined with hydrogen to form water.

you know they are heterozygous for a trait because they have it as jj or jj.

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).

what are the awnser choices? i mean, without choices, it is an incompleat