ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the main role of carbohydrates in the human diet?

1. ATo carry the body's genetic information
2. BTo build muscle tissue
3. CTo provide a quick source of energy
4. DTo form antibodies

ما المونومرات المكوّنة للأحماض النووية مثل DNA؟

1. Aالنيوكليوتيدات
2. Bجزيئات الغليسرول
3. Cالأحماض الأمينية
4. Dجزيئات الغلوكوز

What does phloem carry in a plant?

1. ASugars made in the leaves
2. BCarbon dioxide from the air
3. CWater from the roots only
4. DChlorophyll to the stem

Sickle cell disease is caused by a single base change that replaces one amino acid in haemoglobin. What type of mutation is this?

1. AA nonsense mutation
2. BA frameshift mutation
3. CA missense mutation
4. DA silent mutation

Why do root hair cells have long, thin extensions?

1. ATo anchor the plant firmly against strong winds and rain
2. BTo carry out photosynthesis underground
3. CTo store starch for the winter
4. DTo increase the surface area for absorbing water

A tablet contains 2,5 g of a substance. How many milligrams is this?

1. A25 mg
2. B2500 mg
3. C250 mg
4. D0,0025 mg

A human body cell has 46 chromosomes in G1. How many chromatids does it have at metaphase of mitosis?

1. A46
2. B23
3. C184
4. D92

Why do phospholipids arrange themselves into a double layer in water?

1. ATheir heads are hydrophobic and their tails are hydrophilic
2. BThey are fully soluble in water
3. CTheir heads are hydrophilic and their tails are hydrophobic
4. DThey carry a strong positive charge on both ends