Cevaplı Hemşirelik giriş sınavları için biyoloji çalışma kâğıdı

Which codon signals the start of translation in most genes?

1. AAUG
2. BUAA
3. CUAG
4. DUGA

What does sterilisation mean?

1. AKilling only the viruses on a surface
2. BWashing away visible dirt with water
3. CKilling or removing all microorganisms, including spores
4. DReducing the number of microbes on the skin before an injection

What does the polymerase chain reaction (PCR) do?

1. AIt turns RNA into protein
2. BIt separates proteins by their charge
3. CIt makes many copies of a piece of DNA
4. DIt cuts DNA at specific sequences

How do embryonic stem cells differ from most adult stem cells?

1. AThey can become almost any cell type, while adult stem cells are more limited
2. BThey are haploid, while adult stem cells are diploid
3. CThey are found only in plants, while adult stem cells are found in animals
4. DThey can no longer divide, while adult stem cells divide quickly

The genetic code is described as nearly universal. What does this mean?

1. AEvery cell in the body makes the same proteins
2. BAll organisms have exactly the same genes
3. CThe same codons mean the same amino acids in nearly all organisms
4. DAll organisms have the same number of chromosomes in their cells

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

1. ASmooth endoplasmic reticulum
2. BLysosomes
3. CCentral vacuoles
4. DChloroplasts

A cube-shaped cell has sides of 2 µm. What is its surface area-to-volume ratio?

1. A3 : 1
2. B2 : 1
3. C6 : 1
4. D1 : 3

A kan grubundaki (genotip Iᴬi) bir anne ile B kan grubundaki (Iᴮi) bir babanın çocukları oluyor. Hangi kan grupları mümkündür?

1. AA, B, AB ve O
2. BYalnızca A ve B
3. CYalnızca A, B ve AB
4. DYalnızca AB