ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a monomer?

1. AA molecule that contains no carbon
2. BA very large molecule that is made of many smaller units
3. CA small unit that joins with others to form a polymer
4. DAn enzyme that breaks down polymers

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

ما المواد الناتجة عن البناء الضوئي؟

1. Aثاني أكسيد الكربون والماء
2. Bالبروتين والنيتروجين
3. Cالغلوكوز والأكسجين
4. Dحمض اللبن وATP

A deletion removes exactly three bases, forming one whole codon, from the middle of a gene. What is the most likely result?

1. AEvery amino acid after the deletion is changed to a new one
2. BThe protein becomes three times longer
3. CNo protein can be made at all
4. DThe protein lacks one amino acid but the rest is unchanged

Which body system works with the respiratory system to deliver oxygen to body cells?

1. AThe urinary system
2. BThe skeletal system
3. CThe circulatory system
4. DThe digestive system

What happens to a protein when it is denatured?

1. AIt loses some of its amino acids but keeps its folded shape
2. BIt turns into a carbohydrate
3. CIt loses its 3D shape but keeps its amino acid sequence
4. DIt becomes more active than before

Fleming saw a clear area with no bacteria around a Penicillium mould growing on a bacterial plate. What was the best explanation?

1. AThe mould released a substance that killed or stopped the bacteria
2. BThe bacteria had moved away to find more food
3. CThe mould used up all of the oxygen that the nearby bacteria needed
4. DThe bacteria had turned into mould cells

أُدخلت قاعدة إضافية واحدة قرب بداية جين. لماذا يكون لذلك عادةً أثر كبير في البروتين؟

1. Aيزيح إطار القراءة لجميع الكودونات اللاحقة
2. Bلا أثر له لأن الشفرة فائضة
3. Cيحوّل الجين إلى صبغي مختلف
4. Dيغيّر حمضًا أمينيًا واحدًا فقط في البروتين