Which of the following is true about acute and chronic disease? a) chronic diseases appear rapidly, while acute diseases are always present in a population. b) acute diseases appear, decline or disappear, then never reappear. c) acute diseases are rare. d) chronic diseases affect a large percentage of a population while acute diseases only affect a small percentage. e) acute diseases remain fairly constant in a population.

Which statement best describes how the nucleus, the rough endoplasmic reticulum, and ribosomes interact during protein synthesis?

Where are the strongest jet streams located?

What is the significance of the protein-lined pits? a. protein attracts other proteins needed for atp synthesis within the cell. b. protein-lined pits are able to transport one molecule at a time down the concentration gradient within the cell. c. the polarity of proteins allows other polar molecules to attach and be transported in the cell by transport channels. d. receptors within the pits allow ligands to fuse and be transported into the cell by endocytosis.