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【单选题】
免疫电泳的影响因素不包括A.
电场强度
B.
溶液PH值
C.
离子强度
D.
抗体纯度
E.
电渗
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举一反三
【简答题】A．It doesn't require any examinations. B．It promotes the concept of self-learning. C．It allows more flexibility in students' schedule. D．It allows students to meet teachers from other universities.
【多选题】How do the hormones maintain the blood glucose levels constant?
A.
The minute-by-minute adjustments that keep the blood glucose level near 4.5 mM involve the combined actions of insulin, glucagon, epinephrine, and cortisol on metabolic processes in many body tissues, but especially in liver, muscle, and adipose tissue.
B.
Insulin signals these tissues that blood glucose is higher than necessary; as a result, cells take up excess glucose from the blood and convert it to glycogen and triacylglycerols for storage.
C.
Glucagon signals that blood glucose is too low, and tissues respond by producing glucose through glycogen breakdown and (in the liver) gluconeogenesis and by oxidizing fats to reduce the need for glucose.
D.
Epinephrine is released into the blood to prepare the muscles, lungs, and heart for a burst of activity. Cortisol mediates the body’s response to longer-term stresses.
【简答题】A．Fast music promotes the sale of hamburgers. B．Background music is played in prisons to make prisoner educated. C．Background music is sometimes very boring to the workers. D．Background music is usual...
【多选题】When blood glucose is low,
A.
protein kinase A is inactivated
B.
level of fructose 2,6-bisphosphate is lowered
C.
glycolysis is shut down
D.
inhibition of fructose 1,6-bisphosphatase is sustained
【单选题】When blood glucose concentration rises, the pancreas secrets______ ,and when blood glucose levels fall, the pancreas secretes______:
A.
glycogen, insulin
B.
insulin, glucagon
C.
insulin, fructose
D.
glucagon, glycoen
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