ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is homeostasis?

1. AChanging a species over many generations
2. BBreaking down food for energy
3. CKeeping a stable internal environment
4. DMaking identical copies of a cell

أي عُضيّة تنتج معظم ATP في الخلية حقيقية النواة؟

1. Aالريبوسوم
2. Bالجسيم الحال (الليسوسوم)
3. Cالميتوكوندريا
4. Dجهاز غولجي

في التجربة، ما المتغير المستقل؟

1. Aالعامل الذي يُقاس بوصفه النتيجة
2. Bالعامل الذي يغيّره الباحث عمدًا
3. Cالمجموعة التي لا تتلقى معالجة
4. Dالعامل الذي يبقى ثابتًا في كل المجموعات

لُقّح نبات نمطه الجيني Aa مع نبات aa. ما الكسر المتوقع من النسل الذي يُظهر الصفة المتنحية؟

1. A1/4
2. Bلا أحد منهم
3. C1/2
4. D3/4

What are introns?

1. ACoding sections joined together to form the mature mRNA
2. BNon-coding sections removed from pre-mRNA before translation
3. CShort pieces of DNA made on the lagging strand
4. DCodons that tell the ribosome to stop translation

What happens to a protein when it is denatured?

1. AIt turns into a carbohydrate
2. BIt loses some of its amino acids but keeps its folded shape
3. CIt loses its 3D shape but keeps its amino acid sequence
4. DIt becomes more active than before

Why can standard DNA profiling not tell identical twins apart?

1. AIdentical twins come from one zygote and have the same DNA
2. BTwins always share the same fingerprints on their hands
3. CIdentical twins have no non-coding DNA
4. DOnly one twin inherits the father's DNA

A mutation changes one amino acid in an enzyme. In which location is the change most likely to stop the enzyme from working?

1. AOn the outer surface, far from the active site
2. BIn a section that is removed after the protein is made
3. CIn the active site
4. DIn the gene's stop codon