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SpyIntel [72]
3 years ago
13

When we have not eaten for a while, blood glucose levels fall, which prompts a(n) ____ in insulin and a(n) ___ in glucagon?

Biology
1 answer:
kow [346]3 years ago
8 0
When we have not eaten for a while, blood glucose levels fall, which prompts a decrease in insulin and an increase in glucagon.  

Low blood glucose triggers the alpha cells of pancreas to release glucagon. It prompts the liver to release glucose it has stored in its cells into the bloodstream. This increases the glucose in the blood. Insulin responds to blood sugar level opposite to glucagon. Insulin increases with high blood sugar.

 

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3 years ago
Of the following lists of electron transport compounds, which one lists them in order from the one containing electrons with the
notsponge [240]

Answer:

B) FADH2 -- FMN of Complex I -- Fe-S of Complex II -- Q -- Fe-S of Complex III -- Cyt c -- Cyt a of Complex IV -- O2

Explanation:

FADH2 and NADH give their high energy electrons to the terminal electron acceptor molecular oxygen via an electron transport chain. As the electrons move through electron carriers of the electron transport chain, they lose their free energy. Part of the free energy of the electrons is used to pump the protons from the matrix into the intermembrane space. Therefore, part of the energy of electrons is temporarily stored in the form of a proton concentration gradient.

NADH gives its electrons to FMN of complex I while FADH2 gives its electrons to the Fe-S center of complex II. Both the complexes are oxidized by coenzyme (Q) which in turn reduces Fe-S centers of complex III. Cyt c of complex IV obtains electrons from complex III and passes them to CuA center, to heme "a" to heme "a3-CuB center" and finally to the molecular oxygen.

So, the compounds arranged with respect to the energy content of electrons in descending order are as follows: FADH2 -- FMN of Complex I -- Fe-S of Complex II -- Q -- Fe-S of Complex III -- Cyt c -- Cyt a of Complex IV -- O2.

6 0
3 years ago
Residents of three villages with three different sources of water supply were asked to participate in a survey to identify chole
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