Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

DNA'da adenin her zaman hangi bazla eşleşir?

1. ATimin
2. BSitozin
3. CUrasil
4. DGuanin

What is natural selection?

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

Fenotip nedir?

1. ABir gendeki bazların dizilişi
2. BBir gametteki kromozom sayısı
3. CBir organizmanın bir gen için taşıdığı alel çifti
4. DGöz rengi gibi gözlemlenebilir özellik

The human arm, bat wing and whale flipper contain the same set of bones. What does this suggest?

1. AThey evolved completely separately
2. BThey have the same function
3. CThey are the result of acquired traits
4. DThey share a common ancestor

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy conjugation, transferring plasmids through a pilus
2. BBy mitosis, sharing copies of their chromosomes with neighbours
3. CBy meiosis, forming gametes with new alleles
4. DBy osmosis, moving genes in water

What is a prion?

1. AA bacterium without a cell wall that lives inside nerve cells
2. BA misfolded protein that causes normal proteins to misfold
3. CA very small virus with a DNA genome
4. DA fungal spore that infects the brain

Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?

1. A1/8
2. B1/64
3. C3/64
4. D1/16

A patient breathes very slowly, so carbon dioxide builds up in the blood. What happens to the blood pH, and why?

1. AIt rises, because CO₂ is a base
2. BIt falls, because CO₂ forms carbonic acid in the blood
3. CIt stays the same, because CO₂ does not dissolve in blood
4. DIt rises, because CO₂ removes hydrogen ions