You are doing an experiment involving antibiotic resistance in your study bacteria. This organism grows well on LB - Miller agar plates. You want to make 50 plates (assuming 25ml/plate) of LB-Miller at 1.5% agar concentration. Twenty-five of these plates will be plain, the other 25 need to contain 50 micrograms/ml of Gentamycin for your resistance experiments. You have a stock solution of Gentamycin at a concentration of 5 mg/ml. How would you go about making your plates

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.

In the respiration-photosynthesis cycle shown above, what are the products of cellular respiration that belong in box 2?

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