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Suppose that you conducted a tissue fractionation and that you collected aliquots at each step. Suppose that in step one you suspended tissue in 100 ml buffer then homogenized the tissue. You centrifuged the homogenate to yield a solid fraction (fraction 1, the pellet) and a liquid fraction (fraction 2, the supernatant). Fraction 2 (volume 94 milliliters) contains small organelles, membrane vesicles, and soluble protein from the cytoplasm of the cells making up the tissue. Fraction 2 volume is less than 100 milliliters because you removed solid material (fraction 1) from the original suspension. You took an aliquot of 5.0 milliliters of fraction 2, conducted a protein assay, and estimated a concentration of 16 milligrams/milliliter. What was the yield for fraction 2?
Which of the following is a result of muscle contraction?
Suppose that every non sterilized individual makes exactly ten gametes. Determine the total number of gametes?
You run a set of reactions to determine the reaction rate as a function of substrate concentration and notice that the rate decreases as your substrate concentration increases.
Compare and contrast gene expression in prokaryotes vs. eukaryotes from the standpoint of promoter sequences
How does digestion progress once a carbohydrate reaches the small intestine, and what substances must be released from the pancreas to allow digestion to continue?
What in the configuration of the anterior compartment makes this region particularly liable to an increase in intracompartmental pressure?
Discuss how insertion, deletion, and base substitution of nucleotides can have a significant impact on genes. Find three specific examples of ways in which a very small change in DNA
Tomato plants usually have flowers in small groups and produce fruits that are round and smooth. Three mutations were found: peach (hairy fruits), oblate (flattened fruits), and clustered (with many flowers in a group).
Which wavelengths of visible light carry the most energy? How does this relate to strategies for plant photosynthesis? Why was it important to mark the TLC plate with pencil?
Which way would O2 and CO2 diffuse during internal respiration?
You are a scientist, trying to work out the biological basis for learning and memory, and things havent been progressing so well lately. You decie its time to stop simply observing animals in mazes, and do some manipulitave experimentation.
A neutral variant of feather color in snow geese, called blue phase is caused through an unknown genetic variant. The less common blue phase results from a single dominant gene while common white phase is homozygous recessive.
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