Oxygen transport in humans involves the bonding of oxygen with A : white blood cells
b :platelets
C :Hormones
D Hemoglobin molecules

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

Suppose you use three different scale to weigh a bag of oranges. one scale says the nag weighs 2.1 lb, and third says it weighs 2.1 lb. the actual weight of the bag of oranges is 2.153 lb. which of the following best decribes these results?

Which of the following happened during the precambrian era? the first prokaryotic cells the first eukaryotic cells development of photosynthesis all of the above