Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

What is the main job of the cell wall in a plant cell?

1. ATo release energy from glucose
2. BTo make proteins for the cell
3. CTo control which genes are switched on in the nucleus
4. DTo support the cell and stop it from bursting

What is the cytoplasm?

1. AThe fluid found only inside the nucleus
2. BThe space between two neighbouring cells
3. CThe jelly-like contents between the membrane and nucleus
4. DThe stiff outer layer of cellulose that surrounds a plant cell

Which sugar is found in DNA?

1. AGlucose
2. BRibose
3. CFructose
4. DDeoxyribose

What does Mendel's law of segregation state?

1. AGenes on different chromosomes are always inherited together
2. BDominant alleles are more common in a population than recessive ones
3. CThe two alleles of a gene separate so each gamete gets only one
4. DEach gamete receives both alleles of every gene

A solution of pH 4 is compared with a solution of pH 6. How many times more hydrogen ions does the pH 4 solution have?

1. A2 times
2. B100 times
3. C10 times
4. D20 times

In evolution, what does an organism's fitness mean?

1. AHow long the organism lives
2. BHow strong and fast the organism is compared with others
3. CHow large the organism grows
4. DHow many offspring it leaves that survive and reproduce

In snapdragons, flower colour shows incomplete dominance: RR is red, RW is pink and WW is white. Two pink plants are crossed. What phenotype ratio is expected?

1. A1 red : 1 white
2. BAll pink, like the parents
3. C1 red : 2 pink : 1 white
4. D3 red : 1 white

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. AReplication by RNA copying
2. BSemiconservative replication
3. CConservative replication
4. DReplication without a template