Ascientist at a chemical company designs and conducts an experiment to determine if a chemical made by the company is harmful to crops. to do this, he sprays the chemical on three plants he has in the laboratory. none of the plants survive. the scientist reports that the chemical is not harmful to crops and publishes a paper stating that the chemical should be sprayed on all fields. the scientist is being(1point
a. observant
b. unethical
c. skeptical
d. open-minded

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 controls activities within a eukaryotic cell?

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