ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is a pathogen?

1. AA harmless microbe living on the skin
2. BA medicine that kills bacteria
3. CA cell of the immune system that fights infection
4. DA microorganism or agent that causes disease

What is a monosaccharide?

1. AA chain of many amino acids
2. BTwo sugars joined together, such as sucrose
3. CA fat made of glycerol and fatty acids
4. DA single sugar unit, such as glucose

In biology, what is a clone?

1. AA cell with an extra chromosome
2. BA genetically identical copy of an organism, cell or gene
3. CAn organism that carries genes from two different species
4. DAn offspring of two different parents

What is the role of ribosomal RNA (rRNA)?

1. AIt forms part of the ribosome and helps join amino acids
2. BIt brings single amino acids to the ribosome
3. CIt carries the code from DNA to the ribosome
4. DIt stores genetic information in the nucleus

كيف تتكاثر البكتيريا عادةً؟

1. Aبتكوين البذور
2. Bبالانشطار الثنائي
3. Cبإطلاق فيروسات بالتبرعم
4. Dبالانقسام الاختزالي

In which part of the chloroplast do the light-dependent reactions happen?

1. AIn the cell wall
2. BIn the thylakoid membranes
3. CIn the outer membrane
4. DIn the stroma

An old idea says giraffes got long necks because each one stretched to reach leaves and passed the longer neck to its young. Why is this idea rejected?

1. AChanges acquired in a lifetime are not passed on in the genes
2. BGiraffes do not eat leaves from tall trees, so stretching is not needed
3. COnly plants can pass on traits to offspring
4. DNeck length is not affected by any genes

A patient breathes very slowly, so carbon dioxide builds up in the blood. What happens to the blood pH, and why?

1. AIt stays the same, because CO₂ does not dissolve in blood
2. BIt falls, because CO₂ forms carbonic acid in the blood
3. CIt rises, because CO₂ removes hydrogen ions
4. DIt rises, because CO₂ is a base