ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a tissue?

1. ASeveral organs that work together
2. BA single cell that has one special job in the body
3. CA group of similar cells that work together
4. DA structure inside a cell

Which feature helps a sperm cell carry out its job?

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

ما أصغر وحدة تُعدّ حيّة؟

1. Aالخلية
2. Bالذرة
3. Cالجزيء
4. Dالنسيج

The sodium-potassium pump moves ions across the cell membrane. What does one cycle of the pump do?

1. AMoves 3 Na⁺ out and 2 K⁺ in, using ATP
2. BMoves 3 K⁺ out and 2 Na⁺ in, using ATP
3. CMoves Na⁺ in and K⁺ out, without using ATP
4. DMoves 2 Na⁺ out and 3 K⁺ in, using ATP

During which division of meiosis do homologous chromosomes separate?

1. ABoth meiosis I and meiosis II
2. BMeiosis I
3. CNeither, because they separate in mitosis
4. DMeiosis II

ما القاسم المشترك بين النشا والغليكوجين والسليلوز؟

1. Aسكريات عديدة تتكوّن من وحدات غلوكوز
2. Bأحماض نووية تخزّن المعلومات الوراثية
3. Cبروتينات تتكوّن من أحماض أمينية
4. Dدهون تخزّن الطاقة

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. ACrossing over between chromosome 21 and the X chromosome
2. BA frameshift mutation in one of the genes on the father's Y chromosome
3. CExtra mitosis in the zygote after fertilisation
4. DNondisjunction of the sex chromosomes during meiosis in a parent

A cube-shaped cell has sides of 2 µm. What is its surface area-to-volume ratio?

1. A2 : 1
2. B6 : 1
3. C3 : 1
4. D1 : 3