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一分子脂酰-CoA经一次β-氧化可生成（）和比原来少两个碳原子的脂酰-CoA。
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Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure（）.
A . nitrogen
B . oxygen
C . carbon dioxide
D . water vapor
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（）of this deratting exemption certificate is hereby extended until 4th 0ct.1988 as the vessel is laden with cargo.
A . Validity
B . Valid
C . Validation
D . The coming into force
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用14CO2羧化乙酰-CoA生成丙二酸单酰-CoA，当用它延长脂肪酸链时，其延长部分也含14C。
A . 正确
B . 错误
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脂肪酸—氧化中有三种中间产物：甲、羟脂酰-CoA；乙、烯脂酰-CoA丙、酮脂酰-CoA，按反应顺序排序为（）。
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合成脂肪酸的乙酰CoA主要来自
A . A．糖的分解代谢
B . B．脂肪酸的分解代谢
C . C．胆固醇的分解代谢
D . D．生糖氨基酸的分解代谢
E . E．生酮氨基酸的分解代谢
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灯光可使用的Atmospheres、Effects类型有（）
A . A、Volume Light
B . B、Fog
C . C、Volume Fog
D . D、Lens Effects
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简述乙酰CoA在体内的来源和去路。
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酰CoA羧化酶系
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Atmosphere laden with coal dust or grain dust caused by loading these cargoes（）.
A . require loading operations to be shut down until the atmosphere clears
B . are toxic to human life
C . are subject to spontaneous combustion
D . may be explosive in some concentratio
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乙酰CoA羧化酶是脂肪酸从头合成的限速酶，该酶以（）为辅基，消耗（），催化（）与（）生成（），柠檬酸为其（），长链脂酰CoA为其（）。
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Die Müllers laden uns zum Essen______.
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下列物质中哪些是丙酸代谢的中间物？ (1)丙酰CoA (2)D-甲基丙二酸单酰CoA (3)L-甲基丙二酸单酰CoA (4)琥珀酰CoA
A．1,2,3
B．1,3
C．2,4
D．4
E．1,2,3,4
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胞浆中的脂酰CoA合成酶催化______脂肪酸活化；______上的脂酰CoA合成酶催化长链脂肪酸，生成脂酰CoA，然后进入内质网用于三酰甘油合成；而线粒体膜上的脂酰CoA合成酶催化的长链脂酰CoA，进入______进行β-氧化。
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肝脏生成乙酰乙酸的直接前体是（)A．磷酸肌酸 B．乙酰CoA C．甲羟戊酸D．3-羟基-3-甲基戊二酰CoA E．
肝脏生成乙酰乙酸的直接前体是()
A．磷酸肌酸
B．乙酰CoA
C．甲羟戊酸
D．3-羟基-3-甲基戊二酰CoA
E．以上均不正确
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体内胆固醇生物合成时的关键酶是（)A、HMG-CoA合酶B、HMG-CoA还原酶C、HMG-CoA裂解酶D、ALA合酶E、乙
体内胆固醇生物合成时的关键酶是()
A、HMG-CoA合酶
B、HMG-CoA还原酶
C、HMG-CoA裂解酶
D、ALA合酶
E、乙酰乙酸硫激酶
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高等动物体内,脂酰CoA经过脱氢、（)、（)、硫解四步反应,生成比原来少2个碳原子的脂酰CoA和1分子的乙酰CoA的过程称为一次β－氧化作用。
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Trying to get Americans to eat a healthy diet is a frustrating business. Even the best-designed public-health campaigns cannot seem to compete with the tempting flavors of the snack-food and fast-food industries and their fat-and sugar-laden products. The results are apparent on a walk down any American street—more than 60% of Americans are overweight, and a full quarter of them are overweight to the point of obesity.
Now, health advocates say, an ill-conceived redesign-has taken one of the more successful public-health campaigns—the Food Guide Pyramid—and rendered it confusing to the point of uselessness. Some of these critics worry that America's Department of Agriculture caved to pressure from parts of the food industry anxious to protect theft products.
The Food Guide Pyramid was a graphic which emphasizes that a healthy diet is built on a base of gains, vegetables and fruits, followed by ever-decreasing amounts of dairy products, meat, sweets and oils. The agriculture department launched the pyramid in 1992 to replace its previous program, which was centered on the idea of four basic food groups. The "Basic Four" campaign showed a plate divided into quarters, and seemed to imply that meat and dairy products should make up haft of a healthy diet, with grains, fruits and vegetables making up the other half. It was replaced only over the strenuous objections of the meat and dairy industries.
The old pyramid was undoubtedly imperfect. It failed to distinguish between a doughnut and a whole-grain roll, or a hamburger and a skinless chicken breast, and it did not make clear exactly how much of each foodstuff to eat. It did, however, manage to convey the basic idea of proper proportions in an easily understandable way. The new pyramid, called "My Pyramid", abandons the effort to provide this information. Instead, it has been simplified to a mere logo. The food groups are replaced with unlabelled, multi-colored vertical stripes which, in some versions, rise out of a cartoon jumble of foods that look like the aftermath of a riot at a grocery store. Anyone who wants to see how this translates into a healthy diet is invited to go to a website, put in their age, sex and activity level, and get a custom-designed pyramid, complete with healthy food choices and suggested portion sizes. This is free for those who are motivated, but might prove too much effort for those who most need such information.
Admittedly, the designers of the new pyramid had a tough job to do. They were supposed to condense the advice in the 84-page United States' Dietary Guidelines into a simple, meaningful graphic suitable for printing on the back of a cereal box. And they had to do this in the face of pressure from dozens of special interest groups—from the country's Potato Board, which thought potatoes would look nice in the picture, to the Almond Board of California, which felt the same way about almonds. Even the National Watermelon Promotion Board and the California Avocado Commission were eager to see their products recognized.
Nevertheless, many health advocates believe the new graphic is a missed opportunity. Although officials insist industry pressure had nothing to do with the eventual design, some critics suspect that political influence was at work. On the other hand, it is not clear how much good even the best graphic could do. Surveys found that 80% of Americans recognized the old Food Guide Pyramid—a big success in the world of public-health campaigns. Yet only 16% followed its advice.
Trying to get Americans to eat a healthy diet is a frustrating business can be easily proved by the fact that
A．public-health campaigns cannot compete with tempting flavors.
B．snack-food and fast-food industries are flourishing in the US.
C．most food in America are profoundly rich in fat and sugar.
D．fat people account for a large proportion of American population.
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The Pakistani president, Gen. Pervez Musharraf, announced here today that a delegation of Pakistani officials would fly to the Taliban's headquarters in the southern Afghan city of Kandahar Monday to renew demands that the militia surrender Saudi fugitive Osama Bin Laden.
U.S. officials have named Bin Laden, who has been given shelter by the Taliban rulers in Afghanistan, as the prime suspect in Tuesday's terrorist attacks in Washington and New York.
"We are aware of the gravity of the situation and know that in the lives of nations, such situations do arise that require making important decisions", Musharraf said at a meeting with Pakistani newspaper editors.
The Taliban's leader, Mohammad Omar, has refused to give up Bin Laden, claiming he is not responsible for the U.S. attacks.
"The Pakistan government is leaning on the Taliban government to hand over Osama to save this entire region from catastrophe", said Najam Sethi, editor of the weekly newspaper Friday Times, who participated in the meeting with Musharraf. "I am not sure whether there is much chance of that happening, but the pressure is on from the Pakistan government".
Pakistan has been a key supporter of the Taliban, which controls more than 90 percent of Afghanistan and has enforced a strict interpretation of Islamic law in the country.
Omar, the Taliban leader, today convened an emergency meeting of clerics(圣职人员) in the Afghan capital, Kabul. "As regards the possible attack by America on the sacred soil of Afghanistan, veteran honorable clerics should come to Kabul for a sharia decision", Omar said in a statement broadcast on the Taliban's Radio Shariat today. Sharia is Islamic law.
Omar, who reportedly left Ms. Kandahar headquarters several days ago in anticipation of a U.S. attack, asked Afghans to pray and read the Koran to meet what he called a "test", according to the statement. He indicated he would not attend the meeting of clerics, though he reportedly met with a small group of senior clerics today.
The Pakistan-based Afghan Islamic Press reported today it had received a statement from Bin Laden, dispatched by an aide from an undisclosed location in Afghanistan, in which he denied involvement in last week's attacks on the World Trade Center and the Pentagon.
"I am residing in Afghanistan", the statement said, "I have taken an oath of allegiance to Omar which does not allow me to do such things from Afghanistan. We have been blamed in the past, but we were not involved".
What is the mission of the delegation of Pakistani officials to Afghanistan？
A．To surrender Saudi fugitive Osama Bin Laden.
B．To convey the demands of the U.S. on the Americans' decision of an air-raid on Afghanistan.
C．To tell Taliban leaders to hand over Bin Laden.
D．To advise Taliban leaders to get ready for the Americans' unexpected air attacks.
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（2001、2002、2005)合成胆固醇的关键酶是A、柠檬酸裂解酶B、HMG-CoA合酶C、HMC-CoA裂解酶D、HMG-CoA还
(2001、2002、2005)合成胆固醇的关键酶是
A、柠檬酸裂解酶
B、HMG-CoA合酶
C、HMC-CoA裂解酶
D、HMG-CoA还原酶
E、鲨烯合酶
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脂肪酸&61538;—氧化中有三种中间产物：甲、羟脂酰-CoA；乙、烯脂酰-CoA丙、酮脂酰-CoA，按反应顺序排序为（）
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The heavily laden infantry, though enjoying a superiority of six－to－one, simply could not keep to schedule and lost 60000 men in one day.（英译中)
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下列哪项是合成血红素的原料 （)A．乙酰CoA、甘氨酸、Fe2+B．乙酰CoA、丙氨酸、Fe2+C．琥珀酰CoA、甘
下列哪项是合成血红素的原料 ()
A．乙酰CoA、甘氨酸、Fe2+
B．乙酰CoA、丙氨酸、Fe2+
C．琥珀酰CoA、甘氨酸、Fe2+
D．琥珀酰CoA、甘氨酸、Fe2+
E．草酰CoA、甘氨酸、Fe2+
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一分子14碳长链脂酰-CoA可经次&61538;-氧化生成个乙酰-CoA, 个NADH+H+，个FADH2 。
