ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is the main role of the cytoskeleton?

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

Which element is found in all organic molecules?

1. ANitrogen
2. BSulfur
3. CCarbon
4. DPhosphorus

What is true of a recessive allele?

1. AIt is found only on the X chromosome
2. BIts trait shows whenever one copy is present
3. CIts trait shows only when two copies are present
4. DIt is always harmful to the organism

Why does each type of virus infect only certain kinds of cells?

1. AIt must attach to specific receptor proteins on the cell surface
2. BIt can only enter cells that are dividing by meiosis at that time
3. CIt can only enter cells that have no nucleus
4. DIt must find cells with the same DNA as its own

بِمَ يختلف الانتشار المُيسَّر عن الانتشار البسيط؟

1. Aينقل الجزيئات عكس تدرجها بمضخة وATP
2. Bيستخدم بروتينات قنوية أو ناقلة لكن دون ATP
3. Cلا ينقل سوى الغازات مثل الأكسجين
4. Dيستخدم ATP لنقل الجزيئات صعودًا

Which list puts these human energy sources in order from fastest to use to longest-lasting store?

1. AGlycogen, then ATP, then fat
2. BATP, then fat, then glycogen
3. CFat, then glycogen, then ATP
4. DATP, then glycogen, then fat

لُقّح نبات AaBb مع نبات aabb. الجينان يتوزعان باستقلال. ما نسبة الأنماط الظاهرية المتوقعة في النسل؟

1. A1 : 2 : 1
2. B3 : 1
3. C1 : 1 : 1 : 1
4. D9 : 3 : 3 : 1

Why does the influenza vaccine need to be updated most years?

1. AThe vaccine damages the immune system after one year, so it must be repeated
2. BInfluenza is caused by a different bacterium each year
3. CAntibodies cannot be made against viruses
4. DThe virus keeps changing its surface proteins through mutation