护理入学考试生物
方法
- 说出这道题的主题:细胞结构、物质运输、细胞分裂、DNA 与蛋白质合成、遗传、生物分子、微生物或实验设计。
- 回忆关键规则:A–T 和 G–C,扩散由高浓度向低浓度,水向溶质更多的一侧移动,有丝分裂保持而减数分裂减半染色体数目。
- 对于杂交,先写出亲本的基因型,列出配子,并填好庞尼特方格再计数。
- 对于实验,标出自变量、因变量和控制变量,并问一问证据是支持还是仅仅提示了结论。
- 把每个选项与所问的问题对照,而不是只看它是不是一句真话。
公式表、每个专题的关键方法步骤和 8 道练习题,完整解答附在最后。
膀胱内衬哪种上皮?
肱骨外科颈骨折后,患者手臂外展不能超过约 15°,且肩外侧皮肤麻木。最可能损伤的是哪条神经?
Frank–Starling 机制描述的是:
在恶性贫血中,胃壁细胞的自身免疫性破坏导致贫血,是因为:
Which process removes carbon dioxide from the atmosphere?
Which parent's gamete decides the biological sex of a human baby, and why?
Which gas forms when hydrochloric acid reacts with calcium carbonate?
Why does a burn from steam at 100 °C usually cause more damage than one from liquid water at 100 °C?
答案: D · 变移上皮(尿路上皮)
膀胱扩张时,变移上皮的细胞可由圆形变为扁平,同时保持不透水。
答案: D · 腋神经
腋神经绕肱骨外科颈走行,支配三角肌和小圆肌以及肩外侧皮肤(“团徽”区)。
答案: C · 心室充盈增加时,每搏输出量增加
舒张末期容积越大,心肌被拉伸得越多,收缩力和每搏输出量就越大,从而使输出与静脉回流相匹配。
答案: D · 内因子丧失,因此维生素 B12 不能被吸收
壁细胞分泌内因子,它是回肠末端吸收 B12 所必需的。B12 缺乏会损害 DNA 合成,引起巨幼细胞贫血。
答案: C · Photosynthesis
Plants, algae and some bacteria take in CO₂ during photosynthesis and build it into sugars. Respiration, combustion and decomposition all release CO₂.
答案: C · The father's, because a sperm carries either an X or a Y
A mother (XX) can only give an X. A father (XY) makes sperm with either X or Y. An X sperm gives a girl (XX) and a Y sperm a boy (XY), so each pregnancy has about a 50% chance of each.
答案: A · Carbon dioxide
Acid + carbonate → salt + water + carbon dioxide: CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂. Hydrogen forms when acids react with reactive metals instead.
答案: B · Steam releases a large amount of extra energy as it condenses on the skin
When steam condenses to liquid on skin, it gives off its heat of vaporisation (a large amount), and then the hot water cools further. Liquid water at the same temperature transfers only the second part.
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