ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What does gel electrophoresis separate?

1. ACells by their shape
2. BDNA fragments by size
3. CChromosomes by their colour
4. DBlood into plasma and cells

What is a sister chromatid?

1. AOne of two identical copies of a chromosome joined at the centromere
2. BA small ring of DNA found in bacteria
3. COne of the two sex chromosomes
4. DA chromosome that is inherited from the mother only, never the father

Which element is found in all organic molecules?

1. ACarbon
2. BNitrogen
3. CSulfur
4. DPhosphorus

لماذا يكون عمى الألوان الأحمر والأخضر أكثر شيوعًا عند الذكور منه عند الإناث؟

1. Aلدى الذكور صبغي X واحد، فيكفي أليل واحد
2. Bالأليل سائد عند الذكور ومتنحٍّ عند الإناث
3. Cيوجد الأليل على الصبغي Y
4. Dلا تستطيع الإناث وراثة الأليل من آبائهن

A cut in the skin heals as new skin cells fill the wound. Which process produces these cells?

1. AFertilisation
2. BBinary fission
3. CMeiosis
4. DMitosis

يقرأ خيط DNA القالب T-A-C. ما كودون mRNA المقابل؟

1. AU-T-G
2. BT-A-C
3. CA-U-G
4. DA-T-G

Cystic fibrosis is caused by a faulty CFTR protein, which forms a chloride channel in the cell membrane. Which process is directly affected?

1. ADiffusion of oxygen molecules through the lipid bilayer
2. BProduction of ATP in the mitochondria
3. CMovement of chloride ions through a membrane protein
4. DCopying of DNA in the nucleus

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

1. A23
2. B92
3. C184
4. D46