ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a bacteriophage?

1. AA white cell that eats bacteria
2. BA fungus that kills bacteria
3. CA virus that infects bacteria
4. DA bacterium that infects viruses

ما الجين؟

1. Aنوع من الخلايا يحمل الصفات الوراثية
2. Bمقطع من DNA يشفّر لناتج مثل البروتين
3. Cبروتين ينسخ DNA قبل انقسام الخلية
4. Dالمجموعة الكاملة لكل صبغيات الخلية

What is a monomer?

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

أين تحدث الترجمة؟

1. Aفي الجسيمات الحالّة
2. Bداخل النواة
3. Cفي الجدار الخلوي
4. Dعند الريبوسومات

Why do plants wilt when the soil around their roots becomes very salty?

1. ASalt blocks sunlight from reaching the leaves
2. BThe roots take in too much water
3. CSalt makes the root cells swell and burst
4. DWater leaves the root cells by osmosis

When most people in a community are vaccinated, people who cannot be vaccinated are also protected. Why?

1. AVaccinated people make antibodies for others
2. BThe pathogen has too few hosts to spread easily
3. CThe pathogen mutates into a harmless form
4. DThe vaccine spreads from person to person

The rate of an enzyme reaction rises as substrate is added but then levels off, even when more substrate is added. Why?

1. AAll the active sites are occupied
2. BThe products have turned back into substrate
3. CThe enzyme has been denatured
4. DThe substrate has become an inhibitor

في تجربة دواء، تتلقى مجموعة قرص سكر يشبه الدواء الحقيقي. لماذا؟

1. Aلتوفير المال في الدواء الحقيقي
2. Bللتحكم في أثر الدواء الوهمي، أي التحسن الناتج عن توقّع المعالجة
3. Cلضمان شفاء كل مريض
4. Dلزيادة جرعة الدواء الحقيقي