ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What are homologous chromosomes?

1. AChromosomes that are found only in gametes
2. BTwo identical copies of one chromosome made when DNA is replicated
3. CTwo chromosomes that are always the X and the Y
4. DA matching pair, one from each parent, that carry the same genes

What is transpiration?

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

الغلوكوز مثال على أي نوع من الجزيئات؟

1. Aسكر أحادي
2. Bسكر عديد
3. Cدهن (ليبيد)
4. Dبروتين

A person catches chickenpox once and does not usually become ill with it again. Why?

1. AThe virus stays in the blood and kills new viruses
2. BAntibodies from the first infection turn into new viruses
3. CThe skin becomes thicker after the first infection
4. DMemory cells give a faster, stronger response the next time

A study finds a positive correlation between hours of exercise and lung capacity. What does this mean?

1. AAs exercise increases, lung capacity tends to increase
2. BExercise has been proven to cause higher lung capacity
3. CThere is no link between the two variables
4. DAs exercise increases, lung capacity tends to decrease

By which process does oxygen enter a cell and carbon dioxide leave it?

1. ASimple diffusion through the lipid bilayer
2. BFacilitated diffusion through glucose carriers
3. CActive transport by membrane pumps
4. DEndocytosis in small vesicles

Fertiliser washes from farmland into a lake. Algae grow rapidly, then die, and later many fish die. What is the main cause of the fish deaths?

1. AThe algae release carbon dioxide that poisons fish
2. BBacteria decomposing the dead algae use up the oxygen
3. CThe fish eat too many algae and become ill
4. DThe fertiliser is directly poisonous to fish

Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?

1. A1/8
2. B3/64
3. C1/64
4. D1/16