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

Which feature helps a sperm cell carry out its job?

1. AChloroplasts for making food
2. BA large vacuole for storing water
3. CA cell wall for protection
4. DA flagellum for swimming

What is a trait that is controlled by many genes called?

1. AA polygenic trait
2. BA recessive trait
3. CA codominant trait
4. DA sex-linked trait

What is an organism's genotype?

1. AThe alleles it carries for a trait
2. BThe environment in which it lives
3. CThe traits that can be seen or measured
4. DThe number of cells in its body

Какая структура есть и у прокариотических, и у эукариотических клеток?

1. AМитохондрии
2. BЭндоплазматический ретикулум
3. CРибосомы
4. DЯдро

In which phase of mitosis do the chromosomes condense and the nuclear envelope break down?

1. AMetaphase
2. BAnaphase
3. CTelophase
4. DProphase

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

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

After wolves are removed from a park, the deer population rises sharply and young trees are overgrazed. What does this show?

1. ADeer are producers in the food web
2. BRemoving a predator has no effect on plants
3. COrganisms in a food web depend on each other
4. DWolves compete with trees for sunlight

Fleming saw a clear area with no bacteria around a Penicillium mould growing on a bacterial plate. What was the best explanation?

1. AThe mould used up all of the oxygen that the nearby bacteria needed
2. BThe bacteria had turned into mould cells
3. CThe bacteria had moved away to find more food
4. DThe mould released a substance that killed or stopped the bacteria