Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Kas teisinga apie dominantinį alelį?

1. AJis pasireiškia, kai yra tik viena jo kopija
2. BJis visada paveldimas iš motinos
3. CJis niekada nepasireiškia fenotipe
4. DJis pasireiškia tik tada, kai yra dvi jo kopijos

In the scientific name Homo sapiens, what does Homo name?

1. AThe species
2. BThe genus
3. CThe family
4. DThe kingdom

Which pigment absorbs light energy for photosynthesis?

1. AKeratin
2. BMelanin
3. CHaemoglobin
4. DChlorophyll

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

1. AEndocytosis
2. BPhagocytosis
3. CExocytosis
4. DOsmosis

Kurioje mitozės fazėje seserinės chromatidės traukiamos į priešingus polius?

1. AProfazėje
2. BMetafazėje
3. CInterfazėje
4. DAnafazėje

What does RNA polymerase do?

1. AIt removes introns from pre-mRNA
2. BIt builds a protein from an mRNA template
3. CIt copies the whole genome before cell division
4. DIt builds an RNA strand from a DNA template

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. AA frameshift mutation in one of the genes on the father's Y chromosome
2. BCrossing over between chromosome 21 and the X chromosome
3. CNondisjunction of the sex chromosomes during meiosis in a parent
4. DExtra mitosis in the zygote after fertilisation

Two parents are both carriers of cystic fibrosis, an autosomal recessive disorder. They have three children. What is the probability that none of the three is affected?

1. A9/16
2. B1/64
3. C3/4
4. D27/64