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。
臂丛由哪些脊神经根组成?
患者上睑下垂、瞳孔散大,眼球处于“向下向外”的位置。最可能损伤的是哪条神经?
除了降低血糖外,胰岛素还把哪种离子转移到细胞内?这一作用被用于治疗高钾血症。
在肾素–血管紧张素–醛固酮系统中,血管紧张素 I 主要在哪里转化为血管紧张素 II?
Where does the oxygen released by photosynthesis come from?
A karyotype shows 45 chromosomes, with a single X chromosome and no Y. Which condition is this?
Why does ice float on liquid water?
Hydrogen peroxide fizzes when poured on a cut because an enzyme in blood breaks it down. What gas is produced, and what type of reaction is it?
答案: C · C5 至 T1
臂丛由 C5、C6、C7、C8 和 T1 的前支组成,发出上肢的主要神经。
答案: D · 动眼神经(III)
动眼神经支配大部分眼外肌、上睑提肌和瞳孔括约肌。损伤后外直肌和上斜肌失去拮抗,因此眼球转向下外方。
答案: B · 钾
胰岛素刺激 Na⁺/K⁺-ATP 酶,使钾转移进入细胞。因此胰岛素加葡萄糖被用来降低危险的高血钾。
答案: D · 肺
肾素(肾)把血管紧张素原(肝)裂解为血管紧张素 I,ACE(主要在肺毛细血管内皮上)再将其转化为血管紧张素 II。
答案: B · From water molecules that are split
In the light-dependent reactions, water is split to replace electrons lost by chlorophyll, and oxygen is released. The carbon atoms from CO₂ end up in sugar.
答案: B · Turner syndrome
Turner syndrome (45,X) affects females who have only one X chromosome. Klinefelter syndrome (47,XXY) affects males with an extra X, and Down syndrome is trisomy 21.
答案: B · Ice is less dense than liquid water
When water freezes, hydrogen bonds lock the molecules into an open lattice, so ice takes up more space and is less dense (about 0.92 g/cm³) than liquid water. That is why it floats.
答案: D · Oxygen, in a decomposition reaction
The enzyme catalase catalyses 2H₂O₂ → 2H₂O + O₂. One compound breaking into simpler substances is decomposition, and the bubbles are oxygen.
ExamProblems · examproblems.com/courses/teas-science-practice