把鼠肝细胞磨碎后放入高速离心，细胞匀浆分成a、b、c、d四层，其中往c层加入葡萄糖，没有CO₂和ATP产生；可是加入丙酮酸，马上就有CO₂和ATP产生。C层必定含有的成分是①线粒体    ②核糖体  ③细胞质基质    ④ADP

试卷相关题目

• 1通过特定方法，科学家将小鼠和人已分化的体细胞成功地转变成了类胚胎干细胞。有关分化的体细胞和类胚胎干细胞的描述，正确的是

  A.类胚胎干细胞能够分化成多种细胞

  B.分化的体细胞丢失了某些基因

  C.二者功能有差异，但形态没有差异

  D.二者基因组成相同，且表达的基因相同

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• 2日常生活中把新宰杀的鱼或禽等马上煮熟了吃，肉老而口味不好；如果稍过一段时间再煮，肉反而鲜嫩。这可能与肌细胞内的哪种细胞器的作用和哪种物质含量增加有关

  A.线粒体 氨基酸

  B.核糖体 蛋白质

  C.内质网 蛋白质

  D.溶酶体 氨基酸

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• 3菠菜叶是一种常用的生物实验材料，但对一些实验来说则不适合。下列哪个实验适合采用菠菜作实验材料

  A.检测生物组织中的还原性糖

  B.细胞中脂肪的鉴定

  C.观察植物细胞中的蛋白质

  D.观察多种植物细胞的形态

  开始考试点击查看答案
• 4研究黄豆种子在黑暗中萌发成幼苗的过程，得到下表中数据。依据表中数据得出的下列结论中，正确的是：<table style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; MARGIN: auto 6.75pt; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid windowtext .5pt; mso-table-overlap: never; mso-table-lspace: 9.0pt; mso-table-rspace: 9.0pt; mso-table-anchor-vertical: paragraph; mso-table-anchor-horizontal: page; mso-table-left: 335.1pt; mso-table-top: .15pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt; mso-border-insideh: .5pt solid windowtext; mso-border-insidev: .5pt solid windowtext" border="1" cellspacing="0" cellpadding="0" align="left" _dj="MsoNormalTable"><tbody><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 14.85pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 38.6pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.85pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt" rowspan="2" width="51"> </td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 67.55pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.85pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" rowspan="2" width="90">处理方法   </td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 70.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.85pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt" width="94" colspan="2">重量</td></tr><tr style="PAGE-BREAK-INSIDE: avoid; HEIGHT: 10.4pt; mso-yfti-irow: 1"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 34.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="46">种子</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 10.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="48">幼苗</td></tr><tr style="HEIGHT: 13.85pt; mso-yfti-irow: 2"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 38.6pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.85pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="51">湿重</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 67.55pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.85pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="90">直接称重</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 34.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.85pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="46">160</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.85pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="48">750</td></tr><tr style="HEIGHT: 13.4pt; mso-yfti-irow: 3"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 38.6pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="51">干重</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 67.55pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="90">70℃，72h</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 34.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="46">138</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 13.4pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="48">118</td></tr><tr style="HEIGHT: 5.05pt; mso-yfti-irow: 4; mso-yfti-lastrow: yes"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 38.6pt; PADDING-RIGHT: 5.4pt; HEIGHT: 5.05pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="51">灰分</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 67.55pt; PADDING-RIGHT: 5.4pt; HEIGHT: 5.05pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="90">150℃，16h</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 34.25pt; PADDING-RIGHT: 5.4pt; HEIGHT: 5.05pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="46">2</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 36pt; PADDING-RIGHT: 5.4pt; HEIGHT: 5.05pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" width="48">2</td></tr></tbody></table>

  A.幼苗和种子相比湿重增加，增加的主要是有机物

  B.灰分代表的物质主要是无机盐

  C.幼苗和种子相比干重减少，可能是实验误差

  D.幼苗和种子相比，有机物的种类减少

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• 5通过质壁分离实验可以鉴定：①细胞的死活  ②原生质层与细胞壁伸缩性大小的差异  ③原生质层相当于半透膜④水分子进出细胞的方式    ⑤细胞壁由纤维素构成      ⑥细胞膜是单层膜

  A.①②③

  B.②④⑥

  C.②③⑤

  D.①②⑥

  开始考试点击查看答案
• 6下列关于植物呼吸作用的叙述，正确的是

  A.呼吸作用的中间产物丙酮酸可以通过线粒体双层膜

  B.是否产生二氧化碳是有氧呼吸和无氧呼吸的主要区别

  C.高等植物进行有氧呼吸，不能进行无氧呼吸

  D.仓库中贮藏的风干种子不进行呼吸作用

  开始考试点击查看答案
• 7采用黑—白瓶（不透光—可透光瓶）法测定池塘群落各深度日代谢的平均氧浓度变化，结果如下表，请据表分析，该池塘一昼夜生产氧气和消耗氧气量各为多少g．m^-2<table style="BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; MARGIN: auto auto auto 52.65pt; WIDTH: 250.55pt; BORDER-COLLAPSE: collapse; BORDER-TOP: medium none; BORDER-RIGHT: medium none; mso-border-alt: solid windowtext .5pt; mso-padding-alt: 0cm 5.4pt 0cm 5.4pt" border="1" cellspacing="0" cellpadding="0" width="334" _dj="MsoNormalTable"><tbody><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 0; mso-yfti-firstrow: yes; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly" valign="top" rowspan="2" width="115">深度</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 164pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: windowtext 1pt solid; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt" valign="top" width="219" colspan="2">瓶中Ｏ2的变化（g．m-2）</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 1; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">白瓶</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">黑瓶</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 2; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" valign="top" width="115">1ｍ</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">＋3</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">－1</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 3; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" valign="top" width="115">2ｍ</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">＋2</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">－1</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 4; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" valign="top" width="115">3ｍ</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">0</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">－1</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 5; mso-height-rule: exactly"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" valign="top" width="115">4ｍ</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">－1</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">－1</td></tr><tr style="HEIGHT: 14.2pt; mso-yfti-irow: 6; mso-height-rule: exactly; mso-yfti-lastrow: yes"><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: windowtext 1pt solid; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 86.5pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-top-alt: solid windowtext .5pt" valign="top" width="115">水底</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 85.75pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="114">－3</td><td style="BORDER-BOTTOM: windowtext 1pt solid; BORDER-LEFT: #000000; PADDING-BOTTOM: 0cm; BACKGROUND-COLOR: transparent; PADDING-LEFT: 5.4pt; WIDTH: 78.3pt; PADDING-RIGHT: 5.4pt; HEIGHT: 14.2pt; BORDER-TOP: #000000; BORDER-RIGHT: windowtext 1pt solid; PADDING-TOP: 0cm; mso-border-alt: solid windowtext .5pt; mso-height-rule: exactly; mso-border-left-alt: solid windowtext .5pt; mso-border-top-alt: solid windowtext .5pt" valign="top" width="104">－3</td></tr></tbody></table>　

  A.5；7

  B.8；7

  C.8；11

  D.5；11

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• 8将状况相同的某种绿叶分成面积相等的四组，在不同温度下分别暗处理1h，再光照1h（光强相同），测其重量变化，得到如下表的数据。可以得出的结论是<table border="1" cellspacing="0" cellpadding="0" _dj="MsoNormalTable"><tbody><tr><td width="224">组别</td><td width="72">一</td><td width="72">二</td><td width="72">三</td><td width="72">四</td></tr><tr><td width="224">温度/℃</td><td width="72">27</td><td width="72">28</td><td width="72">29</td><td width="72">30</td></tr><tr><td width="224">暗处理后重量变化/mg</td><td width="72">-1</td><td width="72">-2</td><td width="72">-3</td><td width="72">-1</td></tr><tr><td width="224">光照后与暗处理前重量变化/mg</td><td width="72">+3</td><td width="72">+3</td><td width="72">+3</td><td width="72">+1</td></tr></tbody></table>

  A.该植物光合作用的最适温度约是27℃

  B.该植物呼吸作用的最适温度约是29℃

  C.27～29℃下的净光合速率相等

  D.30℃下的真正光合速率为2mg/h

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• 9肿瘤是21世纪人类最主要的杀手，它是一种由环境因素与遗传因素相互作用的复杂性疾病，下列有关癌细胞的叙述不正确的是

  A.癌变的内在因素是致癌因子激活原癌基因

  B.减少癌细胞的营养供应可以抑制癌细胞的增殖

  C.所有癌细胞中DNA含量都相同

  D.用化学药剂抑制肿瘤细胞的DNA复制，使其停留在间期

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• 10若果蝇细胞正常进行细胞分裂，其一个核内染色体数、DNA分子数、染色体组数、染色单体数之比为8 ：8 ：2 ：0时，则该细胞处于

  A.有丝分裂前期

  B.有丝分裂中期

  C.有丝分裂后期

  D.有丝分裂末期

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