ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a model in science?

1. AA single measurement from an experiment
2. BAn exact copy that has no limitations
3. CThe control group of a study
4. DA simplified representation of a real system

What are round (spherical) bacteria called?

1. ACocci
2. BVibrios
3. CSpirilla
4. DBacilli

What is the correct order of levels of organisation, from smallest to largest?

1. ACell, tissue, organ, organ system, organism
2. BTissue, cell, organ, organism, organ system
3. COrgan, tissue, cell, organ system, organism
4. DCell, organ, tissue, organism, organ system

How do embryonic stem cells differ from most adult stem cells?

1. AThey can become almost any cell type, while adult stem cells are more limited
2. BThey are found only in plants, while adult stem cells are found in animals
3. CThey can no longer divide, while adult stem cells divide quickly
4. DThey are haploid, while adult stem cells are diploid

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

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

What are introns?

1. ACoding sections joined together to form the mature mRNA
2. BCodons that tell the ribosome to stop translation
3. CNon-coding sections removed from pre-mRNA before translation
4. DShort pieces of DNA made on the lagging strand

كيف تصبح مجموعة من البكتيريا مقاومة لمضاد حيوي؟

1. Aيصنع المضاد الحيوي عمدًا الطفرة التي تحتاج إليها البكتيريا بالضبط
2. Bيجعل الجهاز المناعي للمريض البكتيريا مقاومة
3. Cتتعلم كل بكتيريا مقاومة الدواء بعد تعرضها له
4. Dتحمل قلة منها جينات مقاومة أصلًا، فتنجو من الدواء وتتكاثر

An old idea says giraffes got long necks because each one stretched to reach leaves and passed the longer neck to its young. Why is this idea rejected?

1. AOnly plants can pass on traits to offspring
2. BNeck length is not affected by any genes
3. CGiraffes do not eat leaves from tall trees, so stretching is not needed
4. DChanges acquired in a lifetime are not passed on in the genes