Epithelial cells that reabsorb solutes are cuboidal but epithelial cells involved in filtration are thin, squamous cells. The cuboidal cells contain more cytoplasm and organelles, especially mitochondria and rough endoplasmic reticulum (RER), than the squamous cells. Why do the cuboidal cells of the kidney tubules need more mitochondria and RER

The gene that causes sickle-cell disease is present in a higher percentage of residents of sub-saharan africa than among those of african descent living in the united states. even though this gene causes sickle-cell disease, it also provides some protection from malaria, a serious disease that is widespread in sub-saharan africa but absent in the united states. discuss an evolutionary process that could account for the different percentages of the sickle-cell gene among residents of the two regions.

The condition in which joints are inflamed is bursitis select the best answer from the choices provided ot f

Onsider the paragraph above. what is one chemical property of water? a) water is a polar molecule. b) water is the universal solvent. c) water reacts with group 1 metals. d) water has a high specific heat capacity.