Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

A solution has a pH of 3. How is it described?

1. ABasic
2. BIsotonic
3. CAcidic
4. DNeutral

Fotosentez hangi organelde gerçekleşir?

1. AGolgi aygıtında
2. BKloroplastta
3. CMitokondride
4. DÇekirdekte

What is a zygote?

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

In a food chain, which organisms are the producers?

1. AAnimals that eat only plants, such as rabbits and deer
2. BFungi that break down dead material
3. CPredators at the top of the chain
4. DPlants and algae that make food by photosynthesis

Nerve cells release chemical messengers (neurotransmitters) stored in vesicles. By which process are they released?

1. APhagocytosis
2. BOsmosis
3. CEndocytosis
4. DExocytosis

When most people in a community are vaccinated, people who cannot be vaccinated are also protected. Why?

1. AThe pathogen has too few hosts to spread easily
2. BVaccinated people make antibodies for others
3. CThe pathogen mutates into a harmless form
4. DThe vaccine spreads from person to person

The lion is Panthera leo, the tiger is Panthera tigris and the house cat is Felis catus. Which two are most closely related?

1. AThe tiger and the house cat
2. BAll three are equally related
3. CThe lion and the tiger
4. DThe lion and the house cat

Scientists put a human gene into bacteria to make a protein. Why do they use a DNA copy made from the mature mRNA instead of the gene taken straight from human DNA?

1. AHuman DNA has no start codons
2. BBacteria cannot read human codons
3. CBacteria have no ribosomes
4. DBacteria cannot remove introns