ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the main job of the cell wall in a plant cell?

1. ATo support the cell and stop it from bursting
2. BTo release energy from glucose
3. CTo control which genes are switched on in the nucleus
4. DTo make proteins for the cell

What does the polymerase chain reaction (PCR) do?

1. AIt separates proteins by their charge
2. BIt makes many copies of a piece of DNA
3. CIt cuts DNA at specific sequences
4. DIt turns RNA into protein

What is peer review?

1. AExperts checking a study before it is published
2. BRepeating your own experiment many times
3. CReading a textbook to learn a topic
4. DAsking patients for their opinion of a treatment

A student switches a light microscope from low power to high power. What happens to the field of view?

1. AIt gets larger and brighter
2. BIt gets smaller and usually darker
3. CIt gets larger but less detailed
4. DIt stays the same size but gets brighter

Why can small nonpolar molecules cross the cell membrane easily while ions cannot?

1. AIons are larger than most membrane proteins
2. BThe membrane carries a strong positive charge
3. CThe bilayer's core is made of hydrophobic tails
4. DThe membrane is made mostly of long carbohydrate chains

Which is the correct way to write the scientific name of the gut bacterium?

1. AEscherichia coli
2. BEscherichia Coli
3. Ccoli Escherichia
4. DEscherichia Coli

A green plant is kept in a sealed jar in complete darkness for a day. What happens to the carbon dioxide level in the jar?

1. AIt stays the same, because plants do not respire
2. BIt falls, because plants take in more CO₂ when they respire in the dark
3. CIt falls, because the plant keeps photosynthesising
4. DIt rises, because the plant respires but cannot photosynthesise

أين يوجد الصبغي الرئيس للبكتيريا، وما الـ DNA الإضافي الذي قد تحمله؟

1. Aفي النواة، مع DNA الميتوكوندريا
2. Bفي الجدار الخلوي، مع جينات RNA
3. Cفي المنطقة النووية (nucleoid)، مع بلازميدات صغيرة
4. Dفي الريبوسومات، مع صبغيات إضافية