Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Kas yra difuzija?

1. ALąstelės didelių dalelių prarijimas pūslelėje
2. BDalelių judėjimas iš mažesnės į didesnę koncentraciją
3. CVandens judėjimas pro membraną naudojant ATP
4. DDalelių judėjimas iš didesnės į mažesnę koncentraciją

What is a chromosome?

1. AA long DNA molecule, packed with proteins, carrying many genes
2. BA single gene that codes for one protein
3. CA small organelle in the cytoplasm that makes ATP for the cell
4. DA strand of RNA that leaves the nucleus

Ko neturi prokariotinės ląstelės, pavyzdžiui, bakterijos?

1. AMembrana apgaubto branduolio
2. BGenetinės medžiagos DNR pavidalu
3. CRibosomų
4. DLąstelės membranos

What happens to a protein when it is denatured?

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

To insert a human gene into a bacterial plasmid, scientists cut both the gene and the plasmid with the same restriction enzyme. Why?

1. ASo the plasmid loses all its genes
2. BSo the cut ends match and can join together
3. CSo both pieces become exactly the same length
4. DSo the gene is turned into RNA

What does it mean that a person's blood is Rh negative?

1. ATheir red cells lack the RhD antigen
2. BTheir red cells carry extra RhD antigen
3. CTheir plasma has no antibodies at all
4. DTheir red cells lack the A and B antigens

A leaf with green and white areas is kept in light and then tested with iodine. Only the green areas turn blue-black. What does this show?

1. AWhite areas store more starch than green areas
2. BChlorophyll is needed for photosynthesis
3. CLight is not needed for photosynthesis
4. DIodine destroys chlorophyll in the leaf

A karyotype shows 45 chromosomes, with a single X chromosome and no Y. Which condition is this?

1. ATurner syndrome
2. BDown syndrome
3. CA typical male karyotype
4. DKlinefelter syndrome