ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

How many strands does an RNA molecule usually have?

1. ATwo
2. BThree
3. CFour
4. DOne

Which feature helps a sperm cell carry out its job?

1. AA cell wall for protection
2. BChloroplasts for making food
3. CA flagellum for swimming
4. DA large vacuole for storing water

What are homologous chromosomes?

1. AA matching pair, one from each parent, that carry the same genes
2. BChromosomes that are found only in gametes
3. CTwo chromosomes that are always the X and the Y
4. DTwo identical copies of one chromosome made when DNA is replicated

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the stroma
2. BIn the cell wall
3. CIn the outer membrane
4. DIn the thylakoid membranes

What do nitrogen-fixing bacteria do?

1. AThey convert nitrogen gas into compounds that plants can use
2. BThey turn carbon dioxide into sugar
3. CThey break down proteins into glucose
4. DThey release nitrogen gas from dead organisms into the air

White blood cells called macrophages engulf and digest bacteria. Which organelle would you expect them to have in large numbers?

1. ACentral vacuoles
2. BLysosomes
3. CChloroplasts
4. DSmooth endoplasmic reticulum

الهيموفيليا صفة متنحية مرتبطة بالصبغي X. أمّ حاملة (XᴴXʰ) وأب سليم (XᴴY) لديهما ابن. ما احتمال إصابته بالهيموفيليا؟

1. A0
2. B1
3. C1/2
4. D1/4

طفرة نقطية تغيّر الكودون GAA إلى GAG، وكلاهما يشفّر لحمض الغلوتاميك. ما نوع هذه الطفرة؟

1. Aطفرة غير ذات معنى (لا معنى لها، nonsense)
2. Bحذف صبغي
3. Cطفرة إزاحة الإطار
4. Dطفرة صامتة