Биология для вступительных экзаменов на сестринские программы: лист заданий с ответами

What does DNA replication produce?

1. AA new protein
2. BOne mRNA molecule
3. CTwo identical DNA molecules
4. DFour different DNA molecules

What does phloem carry in a plant?

1. ACarbon dioxide from the air
2. BWater from the roots only
3. CChlorophyll to the stem
4. DSugars made in the leaves

What is phagocytosis?

1. AA cell dividing into two identical daughter cells
2. BA cell engulfing large particles such as bacteria
3. CA cell releasing hormones by exocytosis
4. DA cell taking in small droplets of fluid

Which statement best describes biological evolution?

1. AMovement of animals to a new habitat each year
2. BGrowth of an organism from a single zygote to a fully grown adult
3. CChange in the body of one organism during its lifetime
4. DChange in the inherited traits of a population over generations

What is the function of the pores in the nuclear envelope?

1. AThey make ribosomal RNA for the cell
2. BThey attach the nucleus to the cell membrane
3. CThey let molecules such as mRNA pass in and out
4. DThey let chromosomes leave the nucleus to be copied

How does facilitated diffusion differ from active transport?

1. AIt moves only water and no other substances
2. BIt needs no energy and moves substances down their gradient
3. CIt needs ATP and moves substances against their gradient
4. DIt works without any membrane proteins

Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?

1. A2 × 23, which is 46
2. B46, one for each chromosome
3. C23², about 529
4. D2²³, about 8 million

Одна бактерия делится каждые 20 минут. Если ни одна не погибает, сколько бактерий будет через 2 часа?

1. A32
2. B128
3. C64
4. D12