<span>This because some animal diseases, such as rabies, can also infect people. So preventing the spread of these diseases in animals makes the diseases less likely to be spread to humans.</span>
I think that both the dialysis tubing and the small intestine are selectively permeable. Which means they allow only some and not all materials to pass through; for example; glucose which is a simple molecular sugar; will pass through, however larger molecules such as starch can not pass through. A dialysis tube is a semipermeable membrane that allows molecules of certain size to get in or out, while keeping molecules above that size in. They are often used to remove impurities from preparations of proteins or other macromolecules and also to normalize pH of a preparation.
It is “B” he is Forming a hypothesis
The four macromolecules are nucleic acids, carbohydrates, proteins, and lipids.
The empirical or simplest formula of any carbohydrate is (CH2O)n. This formula looks like carbon water just as carbohydrate suggests hydrated or watered carbon. The formula tells us that all carbohydrates are made of carbon, <span>hydrogen, and oxygen atoms in a 1:2:1 ratio.</span>