ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

Which molecules, made by immune cells, bind to specific antigens?

1. AAntibodies
2. BEnzymes
3. CHormones
4. DPhospholipids

Which organelle breaks down fatty acids and hydrogen peroxide?

1. ACentriole
2. BRibosome
3. CChloroplast
4. DPeroxisome

أي قاعدة توجد في RNA ولا توجد في DNA؟

1. Aالثايمين
2. Bالأدينين
3. Cالغوانين
4. Dاليوراسيل

Lactose (milk sugar) is a disaccharide. Which two monosaccharides is it made of?

1. AGlucose and glucose
2. BFructose and galactose
3. CGlucose and fructose
4. DGlucose and galactose

Which sequence describes the usual flow of genetic information in a cell?

1. ADNA to RNA to protein
2. BRNA to DNA to protein
3. CProtein to RNA to DNA
4. DDNA to protein to RNA

How does cytokinesis differ between animal cells and plant cells?

1. AAnimal cells pinch in with a furrow; plant cells build a cell plate
2. BAnimal cells build a cell plate; plant cells pinch in with a furrow
3. COnly plant cells carry out cytokinesis
4. DOnly animal cells carry out cytokinesis

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. A299
2. B300
3. C298
4. D900

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. AHeat makes harmless bacteria become harmful when they are injected
2. BA substance from the dead bacteria changed the harmless ones
3. CBacteria can be killed by the immune system of mice
4. DThe mice were killed by the dead bacteria alone