Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What is a haploid cell?

1. AA cell with one set of chromosomes
2. BA cell with two sets of chromosomes
3. CA cell with no nucleus
4. DA cell with an extra chromosome

What are the parts of a triglyceride (a fat molecule)?

1. AThree glucose units and one phosphate
2. BTwo glycerols and one fatty acid
3. COne amino acid and three fatty acids
4. DOne glycerol and three fatty acids

What is activation energy?

1. AThe energy stored in a molecule of ATP
2. BThe energy needed to start a chemical reaction
3. CThe heat released when a reaction finishes
4. DThe energy plants take in from sunlight

Drugs against fungal infections often cause more side effects than drugs against bacteria. Why?

1. AFungi are much smaller than bacteria
2. BFungi reproduce only by binary fission
3. CFungal cells are eukaryotic, like human cells
4. DFungi have no cell membrane for drugs to act on

Kurioje mitozės fazėje chromosomos išsirikiuoja ląstelės viduryje?

1. AMetafazėje
2. BProfazėje
3. CTelofazėje
4. DAnafazėje

A cell has a nucleus and mitochondria but no cell wall and no chloroplasts. What kind of cell is it most likely to be?

1. AA plant cell
2. BA bacterial cell
3. CAn animal cell
4. DA fungal cell

Why are modified viruses often used to deliver genes in gene therapy?

1. AViruses naturally insert their genetic material into host cells
2. BViruses produce antibodies that fix faulty genes
3. CViruses are larger than human cells, so they can carry many genes
4. DViruses can reproduce without a host cell

Parts of a protein chain coil into alpha helices and fold into beta sheets, held by hydrogen bonds. Which level of protein structure is this?

1. APrimary structure
2. BTertiary structure
3. CQuaternary structure
4. DSecondary structure