江西丰城市孺子学校七级下学期期中考试生物试卷（解析版）-人人终身学习知识网~是各类综合知识资源信息分享，提升综合素质与提高知识技能的终身学习网络平台名校卷初中

admins 发表于 2021-3-17 12:02:20

-江西丰城市孺子学校七年级下学期期中考试生物试卷（解析版）

题型：选择题
※难度：较易
<div><div>【题目】下面是邻居张叔叔去医院做血常规检查的摘录结果。下列说法正确的是（ ）<table cellspacing="0" cellpadding="0" style="border:0.75pt solid #000000; border-collapse:collapse"><tr><td style="width:88.85pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">项目</td><td style="width:88.85pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">测定结果</td><td style="width:88.9pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">参考值</td><td style="width:88.9pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">备注</td><td style="width:88.9pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">单位</td></tr><tr><td style="width:88.85pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">红细胞（RBC）</td><td style="width:88.85pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">2．3</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">4．0～5．5</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">↓</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">1012个／L</td></tr><tr><td style="width:88.85pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">血红蛋白（Hb）</td><td style="width:88.85pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">90</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">120～160</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">↓</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">g/L</td></tr><tr><td style="width:88.85pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">白细胞（WBC）</td><td style="width:88.85pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">37</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">4～10</td><td style="width:88.9pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">↑</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; border-bottom-style:solid; border-bottom-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">109个／L</td></tr><tr><td style="width:88.85pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">血小板（PLT）</td><td style="width:88.85pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">180</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">100～300</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-right-style:solid; border-right-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">109个／L</td><td style="width:88.9pt; border-top-style:solid; border-top-width:0.75pt; border-left-style:solid; border-left-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top"> </td></tr></table>A．显微镜观察张叔叔的血液涂片可发现血小板最多B．张叔叔皮肤受伤出血后，其伤口会流血不止C．根据检测结果可推测张叔叔可能身体有炎症D．如果给张叔叔输液，针应该刺人他的动脉血管 </div></div>
<div>【答案】C【解析】试题分析：根据检测结果可推测张叔叔可能身体有炎症，因为他体内的白细胞超出了正常范围，C正确。</div>

题型：选择题
※难度：较易
<div><div>【题目】下列营养物质中，不能为人体提供能量的有机物是（ ）A．糖类 B．脂肪 C．蛋白质 D．维生素 </div></div>
<div>【答案】D【解析】试题分析：食物所含的六类营养物质中，能为人体提供能量的是糖类、脂肪和蛋白质，水、无机盐、维生素不能提供能量。</div>

题型：选择题
※难度：容易
<div><div>【题目】下列说法错误的是（）A. 常吃素的人却没有患夜盲症是因为某些植物性食物中含有维生素AB. 糖类，蛋白质，脂肪都能为生命活动提供能量C. 牙龈出血的人应多吃水果和蔬菜D. 胆囊炎患者应少吃油脂类的食物 </div></div>
<div>【答案】A【解析】试题分析：植物性食物中不含维生素A，但是在胡萝卜、黄色玉米等植物性食物里含有大量的胡萝卜素，胡萝卜素在人体内能够转变成维生素A。因此，常吃素的人不一定会患夜盲症。</div>

题型：选择题
※难度：容易
<div><div>【题目】下表是某同学在做“唾液淀粉酶的消化作用”的实验中的相关记录，该实验结果表明酶的催化作用（ ）<table cellspacing="0" cellpadding="0" style="border-collapse:collapse"><tr><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">试管</td><td colspan="3" style="width:238.35pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">加入物质</td><td colspan="2" style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">温度</td><td colspan="2" style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">加入碘液</td></tr><tr><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">1</td><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">淀粉糊</td><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">+</td><td colspan="2" style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">唾液</td><td colspan="2" style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">37℃</td><td style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">不变蓝</td></tr><tr><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">2</td><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">淀粉糊</td><td style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">+</td><td colspan="2" style="width:72.25pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">唾液</td><td colspan="2" style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">0℃</td><td style="width:72.3pt; border-style:solid; border-width:0.75pt; padding-right:5.03pt; padding-left:5.03pt; vertical-align:top">变蓝</td></tr><tr style="height:0pt"><td style="width:73.8pt"></td><td style="width:73.8pt"></td><td style="width:73.8pt"></td><td style="width:73.75pt"></td><td style="width:0.05pt"></td><td style="width:73.8pt"></td><td style="width:0.05pt"></td><td style="width:73.75pt"></td></tr></table>A．需要适宜的Ph B．只对一种物质起作用C．需要适宜的温度 D．效率很高 </div></div>
<div>【答案】C【解析】试题分析：酶的活性受温度和PH值的影响．食物的消化主要与消化酶有关，消化酶的消化作用受温度的影响，温度过高或过低消化酶的消化能力下降。37℃接近口腔的温度，此时唾液淀粉酶的活性最强。1号和2号试管形成对照实验，对照组是1号试管，实验组是2号试管，实验的变量是温度，其它条件相同，1号试管滴加碘液不变蓝，证明淀粉已分解，2号试管滴加碘液变蓝证明淀粉没有被分解，通过对比可知，酶的活性的发挥需要适宜的温度。</div>

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-江西丰城市孺子学校七年级下学期期中考试生物试卷（解析版）