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“To produce one molecule of each possible kind of polypeptide that is 300 aminoacids long requires more atoms than that exist in the universe” Can this statement be possibly correct as the universe is pretty big? The mass of the universe can be assumed tobe ~ 1080 grams and the mass of each amino acid is 110 Daltons (Da).
Suppose that the Temperature is 37C and the Membrane Potential is -60mV, with the interior negative with respect to the exterior of the cell.
Finding receptors for opiates sent researchers scurrying for endogenous ligands such as those which could account for "runner's high." What assumption did researchers make?
If the genotype of an organism is YySsTt, then yST would represent. the genotype of the offspring. a gamete of that parent organism. a possible phenotype of the offspring.
what is measured when looking at the net change in displacement of the potato sample?
A snapdragon with pink petals, black anthers and long stems was allowed to self-fertilize. From the resulting seeds, 650 adult plants were obtained.
A plasmid digest with BamHI produced 2 kb and 4 kb fragments. Digest of a plasmid with HindIII produced 6 kb fragment. Double digest with both enzymes produced 1 kb, 2 kb and 3 kb fragments. Sketch a plasmid map.
The Kingdom Fungi contains members with saprobic, parasitic and mutualistic modes of nutritiom. How do these types of nutrition relate to the ecological and economiv importace of this group.
You are on an spaceship moving closer to the sun, your food supply is supplemented by an onboard greenhouse. The light intensity is increasing and for visual comfort you must block out some of the sunlight. What color glas reflecting pane do you ins..
Under constant erosion and weathering, the pyrites leech large amounts of sulfuric acid (H2SO4). The spoil banks are also mixed with large quantities of basic limestone and clay carbonates. What have to occur over time.
one of the most important players in nutrient cycles is microorganisms. please read the following articlewhitman w.b.
Suppose you have just added 100 mL of 0.5 M acetic acid to 400 mL of 0.5 M NaOH. What is the final pH ? (The pKa of acetic acid is 4.7.)
Describe the various explanations (evolutionary, anatomical, etc.) for why pollinators are often very specific to the plants they pollinate.
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