Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What do receptor proteins in the cell membrane do?

1. AThey digest bacteria that enter the cell
2. BThey make ATP for the cell
3. CThey bind specific signal molecules, such as hormones
4. DThey store the cell's genetic code for making proteins

Kokia yra pagrindinė ląstelės membranos sandara?

1. AVienas krakmolo molekulių sluoksnis
2. BStoroji peptidoglikano sienelė
3. CFosfolipidų dvisluoksnis su įterptais baltymais
4. DKietas celiuliozės pluoštų ir lignino sluoksnis

What is the correct order of the phases of mitosis?

1. AProphase, anaphase, metaphase, telophase
2. BMetaphase, prophase, anaphase, telophase
3. CProphase, metaphase, anaphase, telophase
4. DTelophase, anaphase, metaphase, prophase

Kiek chromosomų turi normali žmogaus kiaušialąstė?

1. A22
2. B23
3. C92
4. D46

A patient's blood type is B positive. What does this mean?

1. ATheir red cells carry the A antigen and no RhD antigen
2. BTheir red cells carry no antigens at all
3. CTheir plasma contains anti-B antibodies
4. DTheir red cells carry the B antigen and the RhD antigen

Why can DNA profiling (fingerprinting) identify individual people?

1. ARepeated non-coding DNA regions vary in length between people
2. BEach person's genes code for different amino acids
3. CDNA in blood differs from DNA in skin
4. DEvery person has a different number of chromosomes in their cells

The coding part of an mRNA is 900 bases long, including the start codon and the stop codon. How many amino acids are in the protein?

1. A299
2. B900
3. C300
4. D298

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 lion and the house cat
2. BThe lion and the tiger
3. CThe tiger and the house cat
4. DAll three are equally related