ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is an antigen?

1. AA molecule that the immune system sees as foreign
2. BA white blood cell that engulfs and digests bacteria
3. CA drug that kills viruses
4. DA protein that carries oxygen

What does phloem carry in a plant?

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

What is a haploid cell?

1. AA cell with an extra chromosome
2. BA cell with no nucleus
3. CA cell with two sets of chromosomes
4. DA cell with one set of chromosomes

Salivary amylase begins the digestion of which nutrient in the mouth?

1. AProtein
2. BFat
3. CCellulose
4. DStarch

أين تحدث الترجمة؟

1. Aفي الجسيمات الحالّة
2. Bفي الجدار الخلوي
3. Cعند الريبوسومات
4. Dداخل النواة

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt gives a large surface area for gas exchange
2. BIt lets them hold a larger nucleus and more DNA
3. CIt makes them stick to vessel walls
4. DIt helps them divide faster

A nurse notices that patients who used a new mouthwash had few mouth infections. No other patients were studied. What is most needed before concluding that the mouthwash works?

1. AA larger bottle of the same mouthwash for each patient
2. BA longer explanation in the report
3. CA survey asking patients if they liked it
4. DA comparable group that does not use the mouthwash

Plants in waterlogged soil take up fewer mineral ions, even when the ions are plentiful. What is the best explanation?

1. AMineral ions only enter by osmosis, and osmosis stops in wet soil
2. BWaterlogged roots carry out more photosynthesis
3. CRoot cells lack oxygen, so less ATP is made for active transport
4. DWater dilutes the ions so much that roots cannot detect them