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Glucose is pumped into some animal cells by a symporter powered by simultaneous entry of Na+. The entry of Na+ provides a free-energy input of 10.8 kJ/mol under typical cellular conditions (external [Na+] = 143 mM, internal [Na+] =14 mM and a membrane potential = -50 mV). What is the ratio of glucose concentration outside and inside cells?
Belding's ground squirrels live in colonies. One of the advantages of living in a colony is that predation is decreased because individual squirrels will give alarm calls when a predator approaches the colony. Explain why this behavior of giving a..
Which of the following statements is *NOT* true?
A young man was brought to the hospital suffering an unknown disease. Unfortunately, the young patient did not make it. Upon examination of his liver cells it was determined that the liver cells were extremely unhealthy.
Discuss and define shock. Shock may occur by several pathways, but all types end up with the same basic problem - the cardiovascular system cannot supply enough O2 to cells.
Motor proteins are often described as mechanoenzymes.Why? Could this same term be applied to virtually all enzymes? Why or why not?
An experimental population is started with a recessive deleterious allele (m) at a high frequency (p). The wild type homozygote (+/+) and heterozygote (+/m) have equal fitnesses.
What are the two main groups (clades) of poisonous snakes, and how do their jaws, fangs, and venom types differ?
Describe what a prokaryote is and include a) a description of the genetic material and location, b) what type of organelles they have (if any), and c) if they have a cell wall, cell membrane, or both
In the experiment, we will establish microcosms to test the effect of illumination on relative abundance of our two ciliate phenotypes. You will use three beakers filled with water.
You are given a stock solution of EDTA at a concentration of 5mM, how would you dilution of EDTA with a final concentration of 5mM in a final volume of 250mL?
Living diatoms contain brownish plastids. If global warming causes blooms of diatoms in the surface waters of Earth's oceans, how might this be harmful to the animals that build coral reefs?
What kind of measure is useful in investigating the epidemics? Enlist the steps you would carry out for detecting or investigating an outbreak.
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