17. the enzyme dna polymerase works only in the 5' to 3' direction. how does this affect the leadingstrand and the lagging strand? a. dna polymerase can work continuously on the leading strand but must flip the lagging strand aroundbefore it can work on it. b. dna polymerase can use only the leading strand as a template. a different enzyme is used to synthesizedna on the lagging strandc. dna polymerase can work continuously on the leading strand but works discontinuously on the laggingstrand, creating okazaki fragmentsd. dna polymerase can work on both the leading and the lagging strand but is much faster on the leadingstrand

Ineed to know why d is the correct answer asap

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.

Describe the response the kidneys have to dehydration and excessive water intake. what happens to the concentration of urine in each case ?