ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a monomer?

1. AA small unit that joins with others to form a polymer
2. BA very large molecule that is made of many smaller units
3. CAn enzyme that breaks down polymers
4. DA molecule that contains no carbon

ما القواعد الأربع الموجودة في DNA؟

1. Aالأدينين واليوراسيل والغوانين والسيتوزين
2. Bالأدينين والثايمين والغوانين والسيتوزين
3. Cالأدينين والثايمين والغلوكوز والسيتوزين
4. Dالألانين والثايمين والغليسين والسيستئين

What is an allele?

1. AA section of DNA between genes
2. BA protein made from a gene
3. CA pair of matching chromosomes from each parent
4. DA different version of the same gene

أي عبارة تصف النقل النشط؟

1. Aينقل الماء فقط عبر الغشاء
2. Bيحدث في الخلايا الميتة فقط
3. Cيستخدم الطاقة لنقل المواد عكس تدرّج التركيز
4. Dينقل المواد مع تدرّج تركيزها دون استخدام أي طاقة

During which division of meiosis do homologous chromosomes separate?

1. ANeither, because they separate in mitosis
2. BBoth meiosis I and meiosis II
3. CMeiosis I
4. DMeiosis II

أي تتابع يكمّل خيط DNA التالي: A-T-G-C-C-A؟

1. AA-T-G-C-C-A
2. BT-A-C-G-G-T
3. CU-A-C-G-G-U
4. DG-C-A-T-T-G

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. AA substance from the dead bacteria changed the harmless ones
2. BThe mice were killed by the dead bacteria alone
3. CBacteria can be killed by the immune system of mice
4. DHeat makes harmless bacteria become harmful when they are injected

In an onion root tip, 90 of 100 cells are in interphase and 10 are in mitosis. If the whole cell cycle takes 20 hours, about how long does mitosis last?

1. A10 hours
2. B2 hours
3. C18 hours
4. D0,5 hours