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Q1. Organisms typically have 20 aminoacyl tRNA synthetases that charge a tRNA molecule with a particular amino acid. One would expect there to be 20 tRNAs: one for each amino acid.
Though, there are 61 known tRNA molecules. What characteristic of the synthetases explains this discrepancy?
Q2. Tina is consuming 15 mg of iron per day. Her RDA is 18 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of this nutrient.
What combination(s) of chromosomes are possible in haploid cells following both divisions of meiosis? (Hint: remember independent assortment). A diploid cell contains three pairs of homologous chromosomes designated C1 and C2, M1 and M2, and S1 and S..
Multicellular animals have some mechanism to control cell mass that we do not understand; for in case, salamanders of different ploidies are the same size such that a haploid, a diploid, and a pentaploid organism are about the same size.
What phenotypic ratio would you get if you crossed a white mouse and a heterozygous brown mouse?
What progeny will result from the cross of blue with blue. Which would yield blue fowl, how must you proceed.
The F- strain is unable to synthesize these amino acids; therefore, they must be supplied in the growth medium. Utilize the results from replica-plating to reply the questions.
Those that live in tropical climates like the savannas of Africa are usually much smaller than the ones that live in arctic regions like Lapland.
What advantages do the O-Scale System and the Canadian Physical Activity, Fitness and Lifestyle Approach-Health Body Composition Assessment procedure has in evaluation to percent body fat predictions from skin folded measurements, when used in indivi..
What specific effects might these toxins have on neuron function. How various plants of each of the four phenotypes do you expect.
Describe how each functions, and outline how the organs work together to carry out the role of an organ system. What quantity of the purple flowered, short stem plants in the F2 are expected to be pure breeding. Illustrate the work.
You get a soil sample and run an enrichment culture on it. You give the organisms in the culture with all of the ingredients required for growth except for nitrogen. What result do you expect to have at the end of the experiment.
Your friend is trying to generate an in vitro system for studying the formation of COPII vesicles. He finds that to get well-organized vesicle budding from artificial membranes, he needs to add the coat proteins, the Sar1 GTP-binding protein.
Find out the genotypes of the two black females and the brown male using allele symbols B and b. One shows linear carbon chains, another has one -CH3 groups present on the third carbon atom, and third has two -CH3 groups present on the second carbon ..
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