Biology for nursing entrance exams worksheet with answers

What is the main job of the cell wall in a plant cell?

1. ATo control which genes are switched on in the nucleus
2. BTo make proteins for the cell
3. CTo release energy from glucose
4. DTo support the cell and stop it from bursting

What is a zygote?

1. AA body cell that has just completed its first round of mitosis
2. BThe diploid cell formed when a sperm fertilises an egg
3. CA haploid cell made by meiosis
4. DAn unfertilised egg cell

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

1. ALysosome
2. BRibosome
3. CGolgi apparatus
4. DMitochondrion

Which bond joins amino acids together in a protein?

1. AHydrogen bond between bases
2. BEster bond
3. CGlycosidic bond
4. DPeptide bond

HIV is a retrovirus. What does its enzyme reverse transcriptase do?

1. AIt makes RNA from the host's DNA
2. BIt breaks down the host's ribosomes
3. CIt makes proteins from the virus's DNA
4. DIt makes DNA from the virus's RNA

Why do the palisade cells near the top surface of a leaf contain many chloroplasts?

1. AThey store most of the plant's water for dry periods
2. BThey carry sugars from the leaves down to the roots
3. CThey get the most light and do most of the photosynthesis
4. DThey protect the leaf from insects and strong winds

A student gives fertiliser to 2 tomato plants and none to 2 others. The fertilised plants grow taller. What is the main weakness of the conclusion that fertiliser increases growth?

1. AFertiliser should have been given to all four plants
2. BThe sample size is too small to rule out chance
3. CThere was no independent variable
4. DHeight cannot be measured accurately

Muscle cells use a lot of energy. Which organelle would you expect them to have in large numbers?

1. ALysosomes
2. BChloroplasts
3. CVacuoles
4. DMitochondria