ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What does sterilisation mean?

1. AWashing away visible dirt with water
2. BKilling or removing all microorganisms, including spores
3. CKilling only the viruses on a surface
4. DReducing the number of microbes on the skin before an injection

What is a bacteriophage?

1. AA fungus that kills bacteria
2. BA virus that infects bacteria
3. CA bacterium that infects viruses
4. DA white cell that eats bacteria

What is a zygote?

1. AThe diploid cell formed when a sperm fertilises an egg
2. BA haploid cell made by meiosis
3. CAn unfertilised egg cell
4. DA body cell that has just completed its first round of mitosis

Why does PCR use a DNA polymerase taken from bacteria that live in hot springs?

1. AIt makes the DNA strands stick together
2. BIt copies RNA as well as DNA
3. CIt works only in the dark, like the bacteria it comes from
4. DIt survives the high temperatures used to separate the strands

Why do root hair cells have long, thin extensions?

1. ATo carry out photosynthesis underground
2. BTo store starch for the winter
3. CTo increase the surface area for absorbing water
4. DTo anchor the plant firmly against strong winds and rain

لماذا يكرر العلماء التجربة أو يستخدمون أفرادًا كثيرين؟

1. Aلتغيير المتغير المستقل في كل مرة
2. Bلتقليل أثر الصدفة في النتائج
3. Cلتجنب الحاجة إلى مجموعة ضابطة
4. Dلضمان إثبات صحة الفرضية

تنقسم بكتيريا واحدة كل 20 دقيقة. إذا لم يمت منها شيء، كم عدد البكتيريا بعد ساعتين؟

1. A32
2. B128
3. C12
4. D64

After a long course of broad-spectrum antibiotics, a patient develops severe diarrhoea caused by Clostridioides difficile. What is the most likely reason?

1. AThe antibiotics changed some of the harmless gut bacteria into C. difficile
2. BC. difficile was made by the patient's own immune system
3. CThe antibiotics made the gut lining produce spores
4. DThe antibiotics killed normal gut bacteria that kept C. difficile in check