ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the resolution of a microscope?

1. AHow bright the image appears
2. BIts ability to show two close points as separate
3. CHow large the field of view is
4. DHow many times larger it makes the image of the specimen

What do receptor proteins in the cell membrane do?

1. AThey digest bacteria that enter the cell
2. BThey bind specific signal molecules, such as hormones
3. CThey store the cell's genetic code for making proteins
4. DThey make ATP for the cell

In which stage of the cell cycle does a cell spend most of its time?

1. AMetaphase
2. BAnaphase
3. CInterphase
4. DProphase

Why do root hair cells have long, thin extensions?

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

وُضعت خلية دم حمراء في ماء نقي. ما الأرجح أن يحدث؟

1. Aتنكمش وتتجعد
2. Bتنتفخ وقد تنفجر
3. Cتنقسم إلى خليتين
4. Dيبقى حجمها كما هو

Human adult height varies across a smooth, continuous range rather than falling into a few separate groups. What is the best explanation?

1. AIt is an X-linked recessive trait
2. BIt is controlled by many genes and also affected by environment
3. CIt is controlled only by the environment
4. DIt is controlled by one gene with two alleles and full dominance

A large molecule contains carbon, hydrogen, oxygen, nitrogen and phosphorus. Its monomers each have a sugar and a base. What type of molecule is it?

1. AA carbohydrate
2. BA lipid
3. CA nucleic acid
4. DA protein

HIV infects and destroys helper T cells. Why do people with untreated advanced HIV get infections that healthy people rarely get?

1. AThe virus turns harmless microbes into pathogens
2. BHelper T cells make the antibiotics that the body needs to fight infection
3. CHIV kills the normal flora of the skin and gut
4. DTheir immune response is too weak to control normally harmless microbes