Which three of the observed phenomena below offer evidence in support of the Big Bang theory? 1. the existence of comets
II. elliptical planetary orbits
III. the energy output of the sun
IV. the cosmic microwave background
V. red shifted light from distant objects
VI. helium makes up 25% of ordinary matter
O A. I, II, III
OB. I, III, V
C. IV, V, VI
OD. II, IV, VI

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.

What type of cell division is used to replace old cell?

Which measurement unit represents volume? liter kilometer square centimeter centigram