Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What does homozygous mean?

1. AHaving two different alleles for a gene
2. BHaving only one copy of a gene
3. CHaving an extra chromosome
4. DHaving two identical alleles for a gene

What is the pH of pure water at 25 °C?

1. A7
2. B0
3. C1
4. D14

What is the cytoplasm?

1. AThe fluid found only inside the nucleus
2. BThe stiff outer layer of cellulose that surrounds a plant cell
3. CThe space between two neighbouring cells
4. DThe jelly-like contents between the membrane and nucleus

A seedling is 4 cm tall at week 1, 8 cm at week 2, 12 cm at week 3 and 16 cm at week 4. If the trend continues, how tall will it be at week 6?

1. A32 cm
2. B24 cm
3. C18 cm
4. D20 cm

Which kind of mutation can be passed on to a person's children?

1. AA mutation in a white blood cell during infection
2. BA mutation in a liver cell caused by alcohol
3. CA mutation in a skin cell caused by sunlight
4. DA mutation in a cell that forms eggs or sperm

A woman with blood type O has a child with a man of type AB. Which blood types can their children have?

1. AO or AB
2. BO only
3. CA, B, AB or O
4. DA or B

Wykres pokazuje, że aktywność enzymu rośnie od 20 °C do maksimum w 37 °C, a potem gwałtownie spada. Jaka jest najlepsza interpretacja?

1. AOptimum wynosi około 37 °C; wyższa temperatura powoduje denaturację
2. BEnzym działa coraz szybciej wraz ze wzrostem temperatury
3. CTemperatura nie wpływa na aktywność enzymu
4. DEnzym działa najlepiej w 20 °C i ulega zniszczeniu w 37 °C

How does the CRISPR-Cas9 gene-editing system find the right place to cut DNA?

1. AA guide RNA pairs with the matching DNA sequence
2. BThe Cas9 protein cuts DNA at random sites
3. CIt binds only to the start codon of every gene
4. DIt reads the amino acid sequence of the protein