What chromosomes are present in a typical human karyotype? Assume karyotype is taken from a cell that is not a gamete Answers -

A - Two sets of 23 autosomal chromosomes for a total of 46.

B - Two sets of 23 autosomal chromosomes and 2 sex chromosomes for a total of 48.

C - Two sets of 22 autosomal chromosomes for a total of 44.

D - Two sets of 22 autosomal chromosomes and 2 sex chromosomes for a total of 46.

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.

Which element forms the basis of all organic organisms a carbon b oxygen c hydrogen d nitrogen

What noticeable trend from this graph might be used to make a conclusion?