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Many antibiotics operate by interfering with the ribosome. Tetracyclin, for example, acts by binding to the 30S subunit.
a) What is the effect on translation of the action of tetracycline? In your answer be sure to describe the normal steps to ribosome assembly and protein translation.
b) How come we do not die when we take antibiotics if they interfere with protein production?
Name the two evolutionary hypotheses that can explain why organisms senesce (1). Pick one of them, and explain how it works (2). Give an example of this hypothesis-you may use a hypothetical organism and/or traits, provided it is realistic (2).
Some migratory birds are heterothermic, meaning they sometimes maintain constant body temperature and other times permit their body temperature to vary.
Compute the allelic and genotypic frequencies for the disease assuming Hardy?Weinberg equilibrium. Show your work and express your answer to three significant figures.
Describe how a slight (but smooth) contraction differs from a vigorous contraction of the same muscle using the understandings of multiple motor unit summation.
Human blood may contain either or both of two antigens, A and B. Blood that contains both antigens A and "B is called AB, and blood that contains neither antigens is called type O. At a certain blood bank.
E valuate primary and secondary succession. Explain each type of succession thoroughly and give specific examples of everytype.
The phosphorylation of ADP to form ATP stores approximately 7.3 kcal per mole o ATP. What is the approximate efficiency of cellular respiration for a "mutant" organism that produces only 29 mole of ATP for every mole of glucose oxidized, rather than ..
If populations are sustaining growth at r = 0.088 and the population in 2001 is 3000 individuals, in what year would snow geese be taken off an endangered species list.
Myosin action differs from that of kinesin in that one of the kinesin heads is always in contact with a microtubule, whereas both myosin heads become completely detached from the actin filament.
In horses, the genes for white coat color and red coat color are codominant. Heterozygotes have a light red coloration, called roan.
Describe the major land biome where you live. How have human activities changed the landscape and how has this affected native species? Include specific examples.
Create the action potential of a skeletal muscle cell and the action potential of a ventricular myocyte. Be sure to label the phases and the ions that are mediating the change in electrical potential.
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