ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is endocytosis?

1. AMoving water across the membrane by osmosis
2. BSplitting the cytoplasm after the nucleus divides
3. CTaking material into the cell by folding the membrane around it
4. DReleasing material from the cell by fusing vesicles with the membrane

Which codon signals the start of translation in most genes?

1. AUAA
2. BUGA
3. CUAG
4. DAUG

What is the job of messenger RNA (mRNA)?

1. AIt carries amino acids to the ribosomes
2. BIt carries the genetic code from DNA to the ribosomes
3. CIt stores genetic information in the nucleus permanently
4. DIt forms the main structure of the ribosome

أي تركيب يوجد في الخلايا بدائية النواة وحقيقية النواة معًا؟

1. Aالميتوكوندريا
2. Bالريبوسومات
3. Cالنواة
4. Dالشبكة الإندوبلازمية

لماذا يكرر العلماء التجربة أو يستخدمون أفرادًا كثيرين؟

1. Aلضمان إثبات صحة الفرضية
2. Bلتغيير المتغير المستقل في كل مرة
3. Cلتجنب الحاجة إلى مجموعة ضابطة
4. Dلتقليل أثر الصدفة في النتائج

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. ANeither accurate nor precise
2. BPrecise but not accurate
3. CBoth accurate and precise
4. DAccurate but not precise

A solution contains 5 mg of a substance in every millilitre. How many milligrams are in 0,02 L of the solution?

1. A100 mg
2. B0,1 mg
3. C1000 mg
4. D10 mg

Scientists put a human gene into bacteria to make a protein. Why do they use a DNA copy made from the mature mRNA instead of the gene taken straight from human DNA?

1. ABacteria cannot read human codons
2. BBacteria cannot remove introns
3. CHuman DNA has no start codons
4. DBacteria have no ribosomes