After playing in an old shed, two boys tell their mother that they hurt all over. She checks and finds that they both have fevers. One says that he is dizzy and his head hurts, while the other says he thinks he might vomit. Wondering what the boys have gotten into, their mother seeks medical help. After running tests, the doctor informs her that the boys have managed to pick up a hantavirus. It is a very serious strain, Sin Nombre, and they must get treatment straight away. Considering the boys' situation, where do they MOST likely live?

Which of the following is an oxidation-reduction reaction? (pictured below)

What feature of cell theory is best demonstrated in the image

Mouse liver cells were homogenized and the homogenate subjected to equilibrium density-gradient centrifugation with sucrose gradients. fractions obtained from these gradients were assayed for marker molecules (i.e., molecules that are limited to specific organelles). the results of these assays are shown in the figure. the marker molecules have the following functions: cytochrome oxidase is an enzyme involved in the process by which atp is formed in the complete aerobic degradation of glucose or fatty acids; ribosomal rna forms part of the protein-synthesizing ribosomes; catalase catalyzes decomposition of hydrogen peroxide; acid phosphatase hydrolysis monophosphoric esters at acid ph; cytidylyltransferase is involved in phospholipid biosynthesis; and amino acid permease aids in transport of amino acids across membranes. a) name the marker molecule and give the number of the fraction that is most enriched for each of the following cell components: lysosomes; peroxisomes; mitochondria; plasma membrane; rough endoplasmic reticulum; smooth endoplasmic reticulum.