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。
脑膜的最外层是哪一层?
髋关节的主要屈肌是哪块?
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。
一名年轻女性的肌无力在反复使用后加重,使用乙酰胆碱酯酶抑制剂后改善。最可能的机制是什么?
What is the difference between an epidemic and a pandemic?
Bacteria from hot springs have enzymes that work best at about 80 °C, while most human enzymes work best near 37 °C. What is the best explanation?
Normal saline (0.9% NaCl) is used for IV fluids. How is it described compared with blood?
Which phrase best describes a 0.001 M solution of hydrochloric acid?
答案: D · 硬脑膜
脑膜由外向内依次为硬脑膜、蛛网膜和软脑膜。脑脊液在蛛网膜与软脑膜之间的蛛网膜下腔内流动。
答案: A · 髂腰肌
髂腰肌(腰大肌和髂肌)是最强的屈髋肌。臀大肌负责伸髋。
答案: A · 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: C · 针对神经肌肉接头处乙酰胆碱受体的抗体
在重症肌无力中,自身抗体减少了有功能的乙酰胆碱受体数量。阻断乙酰胆碱酯酶可以留下更多 ACh 与剩余受体结合。
答案: D · A pandemic spreads across many countries or continents
An epidemic is a sharp rise in cases in a particular region or population. A pandemic is an epidemic that has spread over a very wide area, across several countries or continents.
答案: A · Their enzymes have structures that stay stable at high temperatures
Each enzyme's optimum suits its environment. Enzymes from heat-loving microbes have extra bonds and interactions that keep their shape at high temperatures. One such enzyme is used in PCR.
答案: C · Isotonic
0.9% NaCl has about the same solute concentration as blood plasma, so it is isotonic. Water moves equally in and out of red blood cells, which keep their normal shape.
答案: A · A dilute solution of a strong acid
Strength describes how fully an acid ionises; HCl ionises completely, so it is strong at any concentration. Concentration describes how much acid is in each litre; 0.001 M is dilute.
本内容为独立练习材料。ExamProblems 与该考试的主办机构没有隶属关系,也未获其认可,考试名称仅用于描述内容。 ATI TEAS 是 Assessment Technologies Institute, LLC (ATI) 的商标,该机构与 ExamProblems 无关,不为其背书,也不保证其准确性。
ExamProblems · examproblems.com/courses/teas-science-practice