陈钧辉普通生物化学第5版考研真题题库！
<div class="article-content uc-nf-fontsize-change-dom simple-ui"> <p class="ne-p"><strong><span class="ne-text">资料全称：</span></strong><strong><span class="ne-text">陈钧辉《普通生物化学》（第5版）配套题库【考研真题精选＋章节题库】</span></strong></p><p class="ne-p"><strong><span class="ne-text">陈钧辉普通生物化学第5版考研真题题库</span></strong><strong><span class="ne-text">部分摘录：</span></strong></p><p class="ne-p"><strong><span class="ne-text">1下列哪个是饱和脂酸？（）</span></strong></p><p class="ne-p"><span class="ne-text">A.油酸</span></p><p class="ne-p"><span class="ne-text">B.亚油酸</span></p><p class="ne-p"><span class="ne-text">C.花生四烯酸</span></p><p class="ne-p"><span class="ne-text">D.棕榈酸</span></p><p class="ne-p"><span class="ne-text">E.亚麻酸</span></p><p class="ne-p"><span class="ne-text">【答案】D</span></p><p class="ne-p"><span class="ne-text">【解析】棕榈酸又称软脂酸，是十六碳饱和脂酸；ABCE四项，都是不饱和脂酸。</span></p><p class="ne-p"><strong><span class="ne-text">2主要由蛋白质和磷脂组成的是（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.乳糜微粒</span></p><p class="ne-p"><span class="ne-text">B.低密度脂蛋白</span></p><p class="ne-p"><span class="ne-text">C.中间密度脂蛋白</span></p><p class="ne-p"><span class="ne-text">D.极低密度脂蛋白</span></p><p class="ne-p"><span class="ne-text">E.高密度脂蛋白</span></p><p class="ne-p"><span class="ne-text">【答案】E</span></p><p class="ne-p"><strong><span class="ne-text">3下列哪种叙述是正确的？（）</span></strong></p><p class="ne-p"><span class="ne-text">A.所有的磷脂分子中都含有甘油基</span></p><p class="ne-p"><span class="ne-text">B.脂肪和胆固醇分子中都含有脂酰基</span></p><p class="ne-p"><span class="ne-text">C.中性脂肪水解后变成脂酸和甘油</span></p><p class="ne-p"><span class="ne-text">D.胆固醇酯水解后变成胆固醇和氨基糖</span></p><p class="ne-p"><span class="ne-text">E.碳链越长，脂酸越易溶解于水</span></p><p class="ne-p"><span class="ne-text">【答案】C</span></p><p class="ne-p"><span class="ne-text">【解析】A项，鞘氨醇磷脂不含甘油基。B项，胆固醇分子中没有脂酰基。C项，胆固醇酯是胆固醇脂酸酯，水解</span></p><p class="ne-p"><span class="ne-text">后生成胆固醇和脂酸。E项，碳氢链是疏水的，碳氢链越长越难溶于水。</span></p><p class="ne-p"><strong><span class="ne-text">4神经节苷脂是一种（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.脂蛋白</span></p><p class="ne-p"><span class="ne-text">B.糖蛋白</span></p><p class="ne-p"><span class="ne-text">C.糖脂</span></p><p class="ne-p"><span class="ne-text">D.脂多糖</span></p><p class="ne-p"><span class="ne-text">E.磷脂</span></p><p class="ne-p"><span class="ne-text">【答案】C</span></p><p class="ne-p"><span class="ne-text">【解析】神经节苷脂是糖脂，它是具有脂类溶解性质的含糖脂质。</span></p><p class="ne-p"><strong><span class="ne-text">5以克计算，脂肪中的脂肪酸完全氧化所产生的能量比糖多，糖和脂肪完全氧化时最接近的能量比为（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.1：2</span></p><p class="ne-p"><span class="ne-text">B.1：3</span></p><p class="ne-p"><span class="ne-text">C.1：4</span></p><p class="ne-p"><span class="ne-text">D.2：3</span></p><p class="ne-p"><span class="ne-text">E.3：4</span></p><p class="ne-p"><span class="ne-text">【答案】A</span></p><p class="ne-p"><strong><span class="ne-text">6 下列不属于饱和脂肪酸的是（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.辛酸</span></p><p class="ne-p"><span class="ne-text">B.月桂酸</span></p><p class="ne-p"><span class="ne-text">c.硬脂酸</span></p><p class="ne-p"><span class="ne-text">D.油酸</span></p><p class="ne-p"><span class="ne-text">E.棕榈酸</span></p><p class="ne-p"><span class="ne-text">【答案】D</span></p><p class="ne-p"><strong><span class="ne-text">7卵磷脂含有的成分为（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.酸、甘油、磷酸、乙醇胺</span></p><p class="ne-p"><span class="ne-text">B.脂酸、磷酸、胆碱、甘油</span></p><p class="ne-p"><span class="ne-text">C.磷酸、脂酸、丝氨酸、甘油</span></p><p class="ne-p"><span class="ne-text">D.脂酸、磷酸、胆碱</span></p><p class="ne-p"><span class="ne-text">【答案】B</span></p><p class="ne-p"><span class="ne-text">【解析】卵磷脂又称磷脂酰胆碱。可被磷脂酰胆碱酶水解，失去1分子脂酸而产生单脂酰化合物。被胆碱磷酸酯酶水解，释放出胆碱，产生磷脂酸</span></p><p class="ne-p"><strong><span class="ne-text">8（多选）三酰甘油和卵磷脂分子中共有的基团是（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.磷酰基</span></p><p class="ne-p"><span class="ne-text">B.脂酰基</span></p><p class="ne-p"><span class="ne-text">c.胆碱基</span></p><p class="ne-p"><span class="ne-text">D.甘油基</span></p><p class="ne-p"><span class="ne-text">【答案】BD</span></p><p class="ne-p"><span class="ne-text">【解析】卵磷脂和甘油三酯结构上不同的地方是后者分子中的一个脂酰基被磷酰胆碱基所代替。</span></p><p class="ne-p"><strong><span class="ne-text">9酮体中含有（）。</span></strong></p><p class="ne-p"><span class="ne-text">A.乙酰辅酶A</span></p><p class="ne-p"><span class="ne-text">B.乙酰乙酸</span></p><p class="ne-p"><span class="ne-text">C.乙酰磷脂</span></p><p class="ne-p"><span class="ne-text">D.乙酰丙酮</span></p><p class="ne-p"><span class="ne-text">【答案】B</span></p><p class="ne-p"><span class="ne-text">【解析】酮体是饥饿或糖尿病时肝中脂肪酸大量氧化而产生乙酰辅酶A后缩合生成的产物。包括乙酰乙酸、β羟丁酸及丙酮。</span></p><p class="ne-p"><strong><span class="ne-text">10下述（）最准确地描述了肉毒碱的功能。</span></strong></p><p class="ne-p"><span class="ne-text">A.转运中链脂肪酸进入肠上皮细胞</span></p><p class="ne-p"><span class="ne-text">B.转运中链脂肪酸越过线粒体内膜</span></p><p class="ne-p"><span class="ne-text">C.参与转移酶催化的酰基反应</span></p><p class="ne-p"><span class="ne-text">D.是脂肪酸合成代谢中需要的一种辅酶</span></p><p class="ne-p"><span class="ne-text">【答案】C</span></p><p class="ne-p"><strong><span class="ne-text">........</span></strong></p><p class="ne-p"><strong><span class="ne-text">>>>本文为节选>>>相关资料均载于攻关学习网>>>每年更新！</span></strong></p><p class="imgbox"><span class="image-box"><img data-original="http://image.uc.cn/s/wemedia/s/upload/2022/ff6673e0fa1a7ea7a5bec0fd0a756ab0.jpg" data-src="http://image.uc.cn/o/wemedia/s/upload/2022/ff6673e0fa1a7ea7a5bec0fd0a756ab0.jpg;,4,jpegx;3,700x.jpg" src="//image.uc.cn/s/uae/g/1v/images/image-lazyload.png" uploaded="1" data-infoed="1" data-width="5449" data-height="4359" data-format="jpeg" data-size="683609000" data-index="0" class="image-default-bg image-loaded b-lazy" style="width: 700px !important; height: 559.974px !important;" heavypress="http://image.uc.cn/o/wemedia/s/upload/2022/ff6673e0fa1a7ea7a5bec0fd0a756ab0.jpg;,4,jpegx;3,700x.jpg"><span class="share-import-title"></span></span></p><p class="imgbox_desc"><span 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