ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the pH of pure water at 25 °C?

1. A1
2. B7
3. C0
4. D14

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

1. ALigase
2. BHelicase
3. CLipase
4. DAmylase

Which molecules, made by immune cells, bind to specific antigens?

1. AHormones
2. BEnzymes
3. CAntibodies
4. DPhospholipids

تطابقت نتائج تجربة مع توقعات الفرضية. ما أفضل استنتاج؟

1. Aثبتت صحة الفرضية في جميع الحالات
2. Bلا حاجة إلى تجارب أخرى أبدًا
3. Cالفرضية مدعومة، لكنها غير مثبتة
4. Dصارت الفرضية الآن قانونًا من قوانين الطبيعة

In a eukaryotic cell, where does transcription take place?

1. AIn the Golgi apparatus
2. BOn ribosomes in the cytoplasm
3. CIn the lysosomes
4. DIn the nucleus

Many vitamins act as coenzymes. What does this mean?

1. AThey replace enzymes that have been denatured
2. BThey are built into the cell membrane
3. CThey are digested to release large amounts of energy
4. DThey help enzymes carry out their reactions

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe placebo was harmful to the patients
2. BThe drug works well, because 20% of patients improved
3. CThe drug adds little benefit beyond the placebo
4. DThe drug is ten times better than the placebo

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. ANondisjunction of the sex chromosomes during meiosis in a parent
2. BCrossing over between chromosome 21 and the X chromosome
3. CA frameshift mutation in one of the genes on the father's Y chromosome
4. DExtra mitosis in the zygote after fertilisation