ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is homeostasis?

1. ABreaking down food for energy
2. BChanging a species over many generations
3. CMaking identical copies of a cell
4. DKeeping a stable internal environment

أين يوجد معظم DNA في الخلية حقيقية النواة؟

1. Aفي الغشاء الخلوي
2. Bفي الجدار الخلوي
3. Cفي الجسيمات الحالّة
4. Dفي النواة

Which kind of organism causes malaria?

1. AA bacterium carried in water
2. BA protist carried by mosquitoes
3. CA fungus that grows on skin
4. DA virus spread by coughing

Many vitamins act as coenzymes. What does this mean?

1. AThey are digested to release large amounts of energy
2. BThey are built into the cell membrane
3. CThey help enzymes carry out their reactions
4. DThey replace enzymes that have been denatured

ما نواتج التنفس الخلوي الهوائي؟

1. Aالغلوكوز والأكسجين
2. Bحمض اللبن والأكسجين
3. Cالنشا والماء
4. Dثاني أكسيد الكربون والماء وATP

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy meiosis, forming gametes with new alleles
2. BBy conjugation, transferring plasmids through a pilus
3. CBy mitosis, sharing copies of their chromosomes with neighbours
4. DBy osmosis, moving genes in water

In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?

1. AViruses contain no DNA at all
2. BDNA, not protein, is the genetic material of the virus
3. CProtein, not DNA, is the genetic material of the virus
4. DBacteria take up any radioactive substance

The coding part of an mRNA is 900 bases long, including the start codon and the stop codon. How many amino acids are in the protein?

1. A900
2. B298
3. C299
4. D300