Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Which kind of organism causes malaria?

1. AA virus spread by coughing
2. BA fungus that grows on skin
3. CA bacterium carried in water
4. DA protist carried by mosquitoes

Kokios medžiagos gaminamos fotosintezės metu?

1. APieno rūgštis ir ATP
2. BBaltymai ir azotas
3. CGliukozė ir deguonis
4. DAnglies dioksidas ir vanduo

Which carbohydrate forms plant cell walls and acts as dietary fibre?

1. AGlycogen
2. BCellulose
3. CLactose
4. DGlucose

Why is DNA replication called semiconservative?

1. AOnly half of the DNA is copied each time
2. BEach new DNA molecule has one old strand and one new strand
3. CThe old DNA molecule is kept whole, and a completely new one is made
4. DEach new strand is a random mix of old and new pieces

Kodėl gramteigiamos bakterijos Gramo dažymo metu nusidažo purpurine spalva?

1. AJų ploną sienelę dengia lipidais turtinga išorinė membrana
2. BJos turi chlorofilo
3. CJų storoji peptidoglikano sienelė sulaiko purpurinį dažą
4. DJos visai neturi ląstelės sienelės

Why do chromosomes condense into short, thick shapes before mitosis?

1. ASo that they can be copied more quickly
2. BSo they can be moved apart without tangling or breaking
3. CSo that they can leave through the nuclear pores
4. DSo that genes can be transcribed more easily

A human body cell has 46 chromosomes in G1. How many chromatids does it have at metaphase of mitosis?

1. A184
2. B46
3. C92
4. D23

Why can standard DNA profiling not tell identical twins apart?

1. AOnly one twin inherits the father's DNA
2. BIdentical twins come from one zygote and have the same DNA
3. CTwins always share the same fingerprints on their hands
4. DIdentical twins have no non-coding DNA