Biology, 14.07.2019 05:00 graycelynn123
Which statement describes the weather and climate in a tropical region? a. the angle of the sun’s rays affects daylight hours, creating warm temperatures all year. b. the temperature is different in summer and winter because the region is at a high elevation. c. the angle of the sun’s rays controls the amount of precipitation experienced in the region. d. rain in the summer and drought in the winter occur because the region is at a high elevation.
Answers: 2
Biology, 21.06.2019 21:30
Ascientist discovers a new body between the orbit of neptune and the kuiper belt. the object is round and travels in an orbit around neptune with other space objects. the scientist claims that she has found a new dwarf planet. where is the scientist’s error?
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Biology, 22.06.2019 00:30
Arepair man charged $93.06 the price included 2 hours of labor and 40 service charge how much does the repairmen charge per hour for labor?
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Imagine a self-reactive t cell that has not undergone clonal deletion in the thymus (that is to say, it has escaped central tolerance). if it encounters self antigen in the absence of an infection or inflammation, what will happen to this self-reactive t cell? (select two answers) (a) the t cell undergoes clonal expansion. (b) the t cell gains effector functions. (c) the t cell undergoes apoptosis. (d) the t cell becomes activated. (e) the t cell becomes anergic.
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Biology, 22.06.2019 14:50
Lactase is essential for digesting lactose in milk. this enzyme is specific for this sugar. why? molecules and active sites vary in size; only properly sized molecules can fit.there is a precise compatibility between the active site and the lactose molecule.specificity refers to the action of the enzyme, such as hydrolysis, and relatively few molecules can be hydrolyzed.reaction-specific enzymes assume a fit by folding around the most numerous substrate molecules.
Answers: 1
Which statement describes the weather and climate in a tropical region? a. the angle of the sun’s...
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