Red blood cells produce the protein hemoglobin, which delivers oxygen to the body. Skin cells do not produce hemoglobin. How does this specialization take place? A. Red blood cells have different genes than skin cells

B. Red blood cell produce DNA, but skin cells do not.

C. Different genes are activated in blood cells compared to skin cells

D. Blood cells have recombinant DNA​

What are two ways that harvesting algae from the ocean may benefit human society? how might the harvest of algae negatively impact the ocean communities where that algae grows? how could this be prevented?

What are the fixed alleles in the human species? o a. the alleles that are on the most chromosomes b. the alleles that change most often 000 c. the alleles that no one has d. the alleles that everyone has

This is a typical grassland food web. it is also a small picture of an important cycle on earth: the carbon cycle. describe how the carbon gets into this food web. a) bacteria and fungi, the decomposers, recycle carbon from dead organisms. b) carbon is found in the grass and is passed from one level to the next in this food web. eliminate c) all living things give off carbon dioxide as a by-product of respiration and it is released into the atmosphere. d) plants use carbon dioxide as a reactant in photosynthesis, to make usable chemical energy in the form of a sugar.