ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What does xylem carry in a plant?

1. AOxygen from the leaves to the roots
2. BSeeds from the flowers to the soil
3. CSugars from the leaves to the roots
4. DWater and minerals from the roots upward

What is a genetically modified organism (GMO)?

1. AAn organism produced by normal sexual reproduction between two parents
2. BAn organism that has been grown in a greenhouse
3. CAn organism that has caught a virus
4. DAn organism whose DNA has been changed by genetic engineering

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

1. AInterphase
2. BMetaphase
3. CProphase
4. DAnaphase

Which sequence describes the usual flow of genetic information in a cell?

1. AProtein to RNA to DNA
2. BDNA to protein to RNA
3. CRNA to DNA to protein
4. DDNA to RNA to protein

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

1. A2500 mg
2. B0,0025 mg
3. C25 mg
4. D250 mg

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy osmosis, moving genes in water
2. BBy meiosis, forming gametes with new alleles
3. CBy conjugation, transferring plasmids through a pilus
4. DBy mitosis, sharing copies of their chromosomes with neighbours

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

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

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AAnti-A antibodies on the donor cells attack the patient's plasma
2. BThe donor's B antigens destroy the patient's white blood cells
3. CAnti-B antibodies in the patient's plasma attack the donor cells
4. DThe patient's A antigens dissolve the donor's haemoglobin