ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is an inference?

1. AA conclusion reached from observations and prior knowledge
2. BA list of the materials used in an experiment
3. CA variable that the scientist changes on purpose
4. DA measurement taken with a calibrated instrument in a laboratory

What is cytokinesis?

1. AThe division of the cytoplasm into two cells
2. BThe condensing of chromosomes in prophase
3. CThe pairing of homologous chromosomes
4. DThe copying of DNA before division

What is the main role of the cytoskeleton?

1. AIt stores the genetic code of the cell
2. BIt gives the cell its shape and helps it move
3. CIt controls which substances enter the cell
4. DIt joins amino acids into proteins

Which is an example of negative feedback?

1. AContractions growing stronger during labour
2. BSweating when body temperature rises
3. CBlood clotting speeding up once it starts
4. DA wound becoming more inflamed over time

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

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

When plotting the results of an experiment, which variable usually goes on the y-axis?

1. AThe dependent variable
2. BThe time the experiment started
3. CThe independent variable
4. DThe controlled variable

Why does cooking oil not mix with water?

1. AOil is denser than water and sinks
2. BOil molecules are nonpolar and cannot form hydrogen bonds with water
3. CWater molecules are nonpolar and avoid each other
4. DOil molecules are polar and repel the charged ends of water molecules

كيف تصبح مجموعة من البكتيريا مقاومة لمضاد حيوي؟

1. Aيصنع المضاد الحيوي عمدًا الطفرة التي تحتاج إليها البكتيريا بالضبط
2. Bتتعلم كل بكتيريا مقاومة الدواء بعد تعرضها له
3. Cيجعل الجهاز المناعي للمريض البكتيريا مقاومة
4. Dتحمل قلة منها جينات مقاومة أصلًا، فتنجو من الدواء وتتكاثر