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正确
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错误
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【简答题】The Drink Your Body Needs Most 1 Our bodies are estimated to be about 60 to 70% water. Blood is mostly water, and our muscles, lungs, and brain all contain a lot of water. Water is needed to regulate ...
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【单选题】Which mode account for most delivery in international trade? ( )
A.
By railway.
B.
By water.
C.
By air.
D.
By trucks.
查看完整题目与答案
【单选题】接上例,用买的话,年成本为多少?
A.
$280,000
B.
$370,000
C.
$460,000
D.
$490,000
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【简答题】描述现浇混凝土拱桥的几个施工阶段。
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【单选题】—Could you tell me ? —Certainly. [     ]
A.
what was the matter with my watch
B.
what the matter with my watch was
C.
what's the matter with my watch
D.
what the matter with my watch is
查看完整题目与答案
【单选题】下列生理活动中,主要通过神经反射而完成的调节是
A.
正常人体的生长和发育过程
B.
育龄期女性月经周期的正常运行
C.
肢体在受到伤害性刺激时的回撤动作
D.
餐后血糖很快恢复正常水平的过程
查看完整题目与答案
【简答题】-What makes her so frightened? -Oh, it is the mouse that she ___ on her bad while looking for her watch． [     ] A. came about B．came across C．came through D．came up
查看完整题目与答案
【单选题】What do most desert animals do at night?
A.
They are active in their search for food and water.
B.
They go underground to find food.
C.
They build new shady place to avoid the coming day’s sun rays.
D.
They take a rest in the cool and safer darkness.
查看完整题目与答案
【单选题】Which product has been the most successful in 2002?
A.
radios
B.
mobile phones
C.
electronic watches
查看完整题目与答案
【多选题】What are the differences between brown adipose tissue (BAT) and white adipose tissue (WAT)?
A.
In small vertebrates and hibernating animals, a significant proportion of the adipose tissue is brown adipose tissue (BAT), distinguished from white adipose tissue (WAT) by its smaller (diameter 20 to 40 μm), differently shaped (polygonal, not round) adipocytes.
B.
Like white adipocytes, brown adipocytes store TAGs, but in several smaller lipid droplets per cell rather than as a single central droplet. BAT cells have more mitochondria and a richer supply of capillaries and innervation than WAT cells, and it is the cytochromes of mitochondria and the hemoglobin in capillaries that give BAT its characteristic brown color.
C.
In brown adipocytes, fatty acids stored in lipid droplets are released, enter mitochondria, and undergo complete conversion to CO 2 by β oxidation and the citric acid cycle. The reduced FADH 2 and NADH so generated pass their electrons through the respiratory chain to molecular oxygen. In WAT, protons pumped out of the mitochondria during electron transfer reenter the matrix through ATP synthase, with the energy of electron transfer conserved in ATP synthesis.
D.
A unique feature of brown adipocytes is their production of uncoupling protein 1 (UCP1), also called thermogenin . This protein is responsible for one of the principal functions of BAT: thermogenesis. In BAT, UCP1 provides an alternative route for the reentry of protons that bypasses ATP synthase. The energy of the proton gradient is thus dissipated as heat, which can maintain the body (especially the nervous system and viscera) at its optimal temperature when the ambient temperature is relatively low.
查看完整题目与答案
相关题目：
【简答题】The Drink Your Body Needs Most 1 Our bodies are estimated to be about 60 to 70% water. Blood is mostly water, and our muscles, lungs, and brain all contain a lot of water. Water is needed to regulate ...
查看完整题目与答案
【单选题】Which mode account for most delivery in international trade? ( )
A.
By railway.
B.
By water.
C.
By air.
D.
By trucks.
查看完整题目与答案
【单选题】接上例,用买的话,年成本为多少?
A.
$280,000
B.
$370,000
C.
$460,000
D.
$490,000
查看完整题目与答案
【简答题】描述现浇混凝土拱桥的几个施工阶段。
查看完整题目与答案
【单选题】—Could you tell me ? —Certainly. [     ]
A.
what was the matter with my watch
B.
what the matter with my watch was
C.
what's the matter with my watch
D.
what the matter with my watch is
查看完整题目与答案
【单选题】下列生理活动中,主要通过神经反射而完成的调节是
A.
正常人体的生长和发育过程
B.
育龄期女性月经周期的正常运行
C.
肢体在受到伤害性刺激时的回撤动作
D.
餐后血糖很快恢复正常水平的过程
查看完整题目与答案
【简答题】-What makes her so frightened? -Oh, it is the mouse that she ___ on her bad while looking for her watch． [     ] A. came about B．came across C．came through D．came up
查看完整题目与答案
【单选题】What do most desert animals do at night?
A.
They are active in their search for food and water.
B.
They go underground to find food.
C.
They build new shady place to avoid the coming day’s sun rays.
D.
They take a rest in the cool and safer darkness.
查看完整题目与答案
【单选题】Which product has been the most successful in 2002?
A.
radios
B.
mobile phones
C.
electronic watches
查看完整题目与答案
【多选题】What are the differences between brown adipose tissue (BAT) and white adipose tissue (WAT)?
A.
In small vertebrates and hibernating animals, a significant proportion of the adipose tissue is brown adipose tissue (BAT), distinguished from white adipose tissue (WAT) by its smaller (diameter 20 to 40 μm), differently shaped (polygonal, not round) adipocytes.
B.
Like white adipocytes, brown adipocytes store TAGs, but in several smaller lipid droplets per cell rather than as a single central droplet. BAT cells have more mitochondria and a richer supply of capillaries and innervation than WAT cells, and it is the cytochromes of mitochondria and the hemoglobin in capillaries that give BAT its characteristic brown color.
C.
In brown adipocytes, fatty acids stored in lipid droplets are released, enter mitochondria, and undergo complete conversion to CO 2 by β oxidation and the citric acid cycle. The reduced FADH 2 and NADH so generated pass their electrons through the respiratory chain to molecular oxygen. In WAT, protons pumped out of the mitochondria during electron transfer reenter the matrix through ATP synthase, with the energy of electron transfer conserved in ATP synthesis.
D.
A unique feature of brown adipocytes is their production of uncoupling protein 1 (UCP1), also called thermogenin . This protein is responsible for one of the principal functions of BAT: thermogenesis. In BAT, UCP1 provides an alternative route for the reentry of protons that bypasses ATP synthase. The energy of the proton gradient is thus dissipated as heat, which can maintain the body (especially the nervous system and viscera) at its optimal temperature when the ambient temperature is relatively low.
查看完整题目与答案