ورقة عمل الأحياء لامتحانات القبول في التمريض مع الإجابات

What is natural selection?

1. AOrganisms changing their genes when they need to
2. BIndividuals with helpful traits survive and reproduce more
3. CAnimals choosing which mates they like best, so traits change at random
4. DHumans breeding plants for useful traits

What is cytokinesis?

1. AThe copying of DNA before division
2. BThe division of the cytoplasm into two cells
3. CThe pairing of homologous chromosomes
4. DThe condensing of chromosomes in prophase

What are the three parts of a nucleotide?

1. AA glycerol, a phosphate and a fatty acid
2. BA carboxyl group, a base and a lipid
3. CA phosphate, a sugar and a nitrogen base
4. DAn amino group, a sugar and a fatty acid

A tablet contains 2,5 g of a substance. How many milligrams is this?

1. A250 mg
2. B25 mg
3. C2500 mg
4. D0,0025 mg

Yeast in bread dough breaks down sugar without oxygen. What does it produce?

1. AEthanol and carbon dioxide
2. BOxygen and water
3. CGlucose and oxygen
4. DLactic acid and carbon dioxide

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AAn animal cell
2. BA fungal cell
3. CA plant cell
4. DA bacterial cell

A plant cell is placed in a strong salt solution. Its membrane and cytoplasm pull away from the cell wall. What is this called?

1. ALysis
2. BCrenation
3. CTurgor
4. DPlasmolysis

A single-celled organism has a nucleus, no cell wall and swims using cilia. In which group is it best placed?

1. AFungi
2. BProtists
3. CPlants
4. DBacteria