ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

الغلوكوز مثال على أي نوع من الجزيئات؟

1. Aدهن (ليبيد)
2. Bسكر أحادي
3. Cسكر عديد
4. Dبروتين

What is transpiration?

1. AThe movement of sugars through the phloem to the roots
2. BThe loss of water vapour from the leaves of a plant
3. CThe taking in of CO₂ for photosynthesis
4. DThe growth of roots towards water

What is activation energy?

1. AThe heat released when a reaction finishes
2. BThe energy needed to start a chemical reaction
3. CThe energy stored in a molecule of ATP
4. DThe energy plants take in from sunlight

What does Mendel's law of segregation state?

1. ADominant alleles are more common in a population than recessive ones
2. BEach gamete receives both alleles of every gene
3. CThe two alleles of a gene separate so each gamete gets only one
4. DGenes on different chromosomes are always inherited together

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

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

لُقّح نبات أزهاره حمراء مع نبات أزهاره بيضاء، وكانت جميع الأفراد الناتجة ذات أزهار وردية. ماذا يبيّن ذلك؟

1. Aالسيادة غير التامة
2. Bالسيادة المشتركة
3. Cالسيادة التامة
4. Dصفة مرتبطة بالجنس

Why is ATP described as an energy carrier rather than a long-term energy store?

1. AATP contains no energy in its bonds, so it cannot be stored
2. BATP can be made only in plants
3. CCells hold only a little and constantly recycle it from ADP
4. DATP is stored in large amounts in fat tissue

PCR starts with one double-stranded DNA molecule, and the number of copies doubles each cycle. How many copies are there after 10 cycles?

1. A1024
2. B100
3. C512
4. D20