Biology for nursing entrance exams worksheet with answers

Which organelle produces most of the ATP in a eukaryotic cell?

1. ARibosome
2. BMitochondrion
3. CGolgi apparatus
4. DLysosome

What is the resolution of a microscope?

1. AHow bright the image appears
2. BHow many times larger it makes the image of the specimen
3. CHow large the field of view is
4. DIts ability to show two close points as separate

Which definition of a species is most often used for animals?

1. AAll the animals that eat the same food
2. BAny organisms that look alike
3. CA group that can interbreed and have fertile offspring
4. DAll of the different organisms that live together in one area

An experiment's results match the predictions of the hypothesis. What is the best conclusion?

1. AThe hypothesis is proven true for all cases
2. BThe hypothesis is supported, but not proven
3. CNo further experiments are ever needed
4. DThe hypothesis is now a law of nature

Two heterozygous parents (Aa × Aa) are crossed. What is the expected genotype ratio?

1. A1 AA : 1 aa
2. B3 AA : 1 aa
3. C2 AA : 1 Aa : 1 aa
4. D1 AA : 2 Aa : 1 aa

How do saturated fats differ from unsaturated fats?

1. AThey contain nitrogen and form proteins
2. BThey have no C=C double bonds and are usually solid
3. CThey have many double bonds and are liquid at room temperature
4. DThey dissolve easily in water

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

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

Why does each enzyme usually act on only one type of substrate?

1. AEach enzyme contains the DNA of its substrate
2. BSubstrates are made by the enzyme itself
3. CThe shape of its active site fits only that substrate
4. DEnzymes can only work inside the nucleus