Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Which element is found in all organic molecules?

1. ASulfur
2. BCarbon
3. CPhosphorus
4. DNitrogen

Prieš kokius organizmus veiksmingi antibiotikai?

1. AŽiedadulkių alergenus
2. BVisų tipų mikroorganizmus vienodai
3. CVirusus
4. DBakterijas

Kuri iš šių medžiagų yra lipidas?

1. ATriacilglicerolis (riebalai)
2. BGlikogenas, gliukozės atsargų forma
3. CDNR
4. DHemoglobinas

What is a chromosomal translocation?

1. AA piece of a chromosome is copied twice and stays in the same place
2. BOne DNA base is replaced by another base
3. CA piece of one chromosome attaches to a non-matching chromosome
4. DA piece of a chromosome is flipped around in place

The results of an experiment do not support the hypothesis. What should the scientist do next?

1. AChange the data so they fit the hypothesis
2. BStop doing any further research on the question
3. CRevise the hypothesis and test it again
4. DReport that the hypothesis was proven correct

What is meant by independent assortment in meiosis?

1. ADNA is copied separately in each chromosome
2. BAll chromosomes from the mother go into the same gamete
3. CHomologous pairs line up randomly, so gametes get different mixes of chromosomes
4. DSister chromatids stay joined until the end of meiosis, so all gametes are identical

Bacteria grown in heavy nitrogen (¹⁵N) are moved to normal nitrogen (¹⁴N) and allowed to divide once. All their DNA now has a density halfway between heavy and light. Which model of replication does this support?

1. AConservative replication
2. BSemiconservative replication
3. CReplication without a template
4. DReplication by RNA copying

Why does cooking oil not mix with water?

1. AWater molecules are nonpolar and avoid each other
2. BOil molecules are nonpolar and cannot form hydrogen bonds with water
3. COil is denser than water and sinks
4. DOil molecules are polar and repel the charged ends of water molecules