Biology, 06.09.2020 06:01 Loveekatiana
Identify the choice that best completes the statement or answers the question.
Testing hypotheses often involves designing experiments. Which of the following is the factor that is observed and measured in an experiment?
control group
experimental group
dependent variable
independent variable
Answers: 2
Biology, 22.06.2019 00:00, mya032
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.
Answers: 3
Biology, 22.06.2019 10:00, memphissmith5779
14. which of the following codons code for threonine? a. ucg b. ugu c. cga d. aca
Answers: 2
Identify the choice that best completes the statement or answers the question.
Testing hypotheses o...
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