Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Kokie yra nukleorūgščių, pavyzdžiui, DNR, monomerai?

1. AAminorūgštys
2. BNukleotidai
3. CGlicerolio molekulės
4. DGliukozės molekulės

Which sex chromosomes does a typical human male have?

1. AYY
2. BXY
3. CXX
4. DX only

What are round (spherical) bacteria called?

1. ABacilli
2. BSpirilla
3. CCocci
4. DVibrios

Kas suteikia šiurkščiajam endoplazminiam tinklui „šiurkštų" vaizdą?

1. APrie jo paviršiaus prisitvirtinusios ribosomos
2. BAnt paviršiaus sukauptos riebalų lašelės
3. CPrie išorinės pusės prilipusios lizosomos
4. DChloroplastai jo membranų viduje

Which statement about Archaea is correct?

1. AThey are multicellular plants
2. BThey are a type of virus
3. CThey are prokaryotes, and many live in extreme environments
4. DThey are eukaryotes that have a nucleus and membrane-bound organelles

What happens to a protein when it is denatured?

1. AIt becomes more active than before
2. BIt loses its 3D shape but keeps its amino acid sequence
3. CIt loses some of its amino acids but keeps its folded shape
4. DIt turns into a carbohydrate

In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?

1. AProtein, not DNA, is the genetic material of the virus
2. BDNA, not protein, is the genetic material of the virus
3. CViruses contain no DNA at all
4. DBacteria take up any radioactive substance

A student puts a fertilised plant in a sunny window and an unfertilised plant in a dark cupboard. The fertilised plant grows more. What is the main flaw?

1. AThere was no hypothesis to test
2. BThe dependent variable was not measured
3. CTwo variables were changed, so the cause is unclear
4. DThe student used too much fertiliser on the plant in the window