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#Question id: 3873
#3. Fundamental Processes
The excision (splicing) of many group I introns requires, in addition to the primary transcript RNA:
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#Question id: 10171
#6. System Physiology – Plant
Quantum flux, or photon flux density (PFD), is the number of incident quanta (singular quantum) striking the leaf, expressed in
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#Question id: 11002
#7. System Physiology – Animal
A 30-year-old man has an ejection fraction of 0.25 and an end systolic volume of 150 ml. What is his end diastolic volume?
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#Question id: 16118
#7. System Physiology – Animal
Following statements are regarding to the heat production by the activation of sympathetic nervous system.
A. Activation is stimulation of β receptors in brown fat, which increases metabolic rate and heat production.
B. Activation is stimulation of α2 receptors in brown fat, which increases metabolic rate and heat production.
C. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasoconstriction. Vasoconstriction reduces blood flow to the surface of the skin.
D. Stimulation of α1 receptors in vascular smooth muscle of skin blood vessels, producing vasodilation. Vasodilation reduces blood flow to the surface of the skin.
Which of the following combination is correct?
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#Question id: 24159
#Aptitude
There are no effective boundaries when it comes to pollutants. Studies have shown that toxic insecticides that have been banned in many countries are riding the wind from countries where they remain legal. Compounds such as DDT and toxaphene have been found in remote places like the Yukon and other Arctic regions.
This paragraph best supports the statement that