Biology for nursing entrance exams worksheet with answers

What does mitosis produce?

1. ATwo genetically identical daughter cells
2. BTwo cells with half the chromosome number
3. COne cell with twice the chromosome number
4. DFour genetically different daughter cells

How many strands does an RNA molecule usually have?

1. AOne
2. BThree
3. CFour
4. DTwo

Which base is found in RNA but not in DNA?

1. AGuanine
2. BThymine
3. CAdenine
4. DUracil

White blood cells called macrophages engulf and digest bacteria. Which organelle would you expect them to have in large numbers?

1. ACentral vacuoles
2. BSmooth endoplasmic reticulum
3. CChloroplasts
4. DLysosomes

How does facilitated diffusion differ from simple diffusion?

1. AIt uses ATP to move molecules uphill
2. BIt only moves gases such as oxygen
3. CIt moves molecules against their gradient using a pump and ATP
4. DIt uses channel or carrier proteins but no ATP

What are the products of aerobic cellular respiration?

1. ALactic acid and oxygen
2. BCarbon dioxide, water and ATP
3. CStarch and water
4. DGlucose and oxygen

A food sample turns purple with biuret reagent but stays yellow-brown with iodine solution. What does the sample contain?

1. ABoth protein and starch
2. BFat but no protein
3. CProtein but no starch
4. DStarch but no protein

Why can standard DNA profiling not tell identical twins apart?

1. AOnly one twin inherits the father's DNA
2. BIdentical twins have no non-coding DNA
3. CIdentical twins come from one zygote and have the same DNA
4. DTwins always share the same fingerprints on their hands