Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What does sterilisation mean?

1. AKilling or removing all microorganisms, including spores
2. BKilling only the viruses on a surface
3. CWashing away visible dirt with water
4. DReducing the number of microbes on the skin before an injection

Organizmo genotipas yra Bb. Kaip jis apibūdinamas?

1. AHomozigotinis dominantinis
2. BHomozigotinis recesyvinis
3. CHaploidinis
4. DHeterozigotinis

What is a zygote?

1. AA body cell that has just completed its first round of mitosis
2. BAn unfertilised egg cell
3. CThe diploid cell formed when a sperm fertilises an egg
4. DA haploid cell made by meiosis

What is the role of oxygen in aerobic respiration?

1. AIt accepts electrons at the end of the transport chain
2. BIt is built into glucose molecules
3. CIt breaks pyruvate into lactic acid
4. DIt is split to release the energy needed for glycolysis

Which stage of aerobic respiration produces the most ATP?

1. AFermentation
2. BThe Krebs cycle in the matrix
3. CThe electron transport chain
4. DGlycolysis in the cytoplasm

Identical twins raised in different homes have different body weights. What does this show?

1. AThe phenotype depends on environment as well as genotype
2. BMutations happened in every cell of one twin
3. CThe twins must have different genotypes for body weight genes
4. DBody weight is controlled by a single gene

Why does cooking oil not mix with water?

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

Two populations of one species live on separate islands for many thousands of years. When brought together, they can no longer interbreed. What has happened?

1. AArtificial selection by humans
2. BHomeostasis in both populations
3. CSpeciation after geographic isolation
4. DHybrid vigour from crossbreeding