Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

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

1. AGlucose
2. BCellulose
3. CGlycogen
4. DLactose

In an enzyme reaction, what is the substrate?

1. AThe gene that codes for the enzyme
2. BThe substance that the enzyme acts on
3. CThe part of the enzyme that changes shape
4. DThe product released at the end

In which form do animals store glucose in the liver and muscles?

1. AStarch
2. BGlycogen
3. CChitin
4. DCellulose

What does the enzyme lipase break down?

1. AProteins into amino acids and peptides
2. BDNA into nucleotides
3. CFats into fatty acids and glycerol
4. DStarch into sugars

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy conjugation, transferring plasmids through a pilus
2. BBy osmosis, moving genes in water
3. CBy meiosis, forming gametes with new alleles
4. DBy mitosis, sharing copies of their chromosomes with neighbours

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor stem cells produce new, healthy blood cells
2. BThe donor marrow contains antibiotics that kill cancer
3. CThe donor red cells divide to make more red cells
4. DThe transplant replaces the patient's bones

Kryžminami du žirnių augalai, abu AaBb. Genai yra skirtingose chromosomose. Kokia palikuonių dalis, tikėtina, turės abu recesyvinius požymius (aabb)?

1. A1/4
2. B9/16
3. C3/16
4. D1/16

A plant is kept in the dark to use up its starch. One leaf is then sealed in a bag with a chemical that absorbs CO₂, and the plant is placed in light. Later, that leaf has no starch, but the other leaves do. What does this show?

1. ALight is needed for photosynthesis
2. BChlorophyll is needed for photosynthesis
3. CCarbon dioxide is needed for photosynthesis
4. DOxygen is needed for photosynthesis