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

In biology, what is a clone?

1. AA cell with an extra chromosome
2. BAn offspring of two different parents
3. CAn organism that carries genes from two different species
4. DA genetically identical copy of an organism, cell or gene

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

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

Какая наименьшая единица считается живой?

1. AКлетка
2. BАтом
3. CТкань
4. DМолекула

Что происходит в реакции дегидратационного синтеза (конденсации)?

1. AВода удаляется из клетки путём осмоса
2. BКлетка высыхает и погибает
3. CДва мономера соединяются, и выделяется молекула воды
4. DПолимер расщепляется с присоединением молекулы воды

What is a random sample?

1. AA group chosen because they are likely to support the hypothesis
2. BA group made only of people who volunteer to take part
3. CA group where everyone in the population has an equal chance of being chosen
4. DA group chosen by the researcher because they are easy to reach and willing

Why does ice float on liquid water?

1. AIce contains more air than liquid water
2. BIce molecules are lighter than liquid water molecules
3. CIce is denser than liquid water
4. DHydrogen bonds hold ice in an open, less dense structure

After a meal, blood glucose rises. Which response brings it back to normal?

1. AThe kidneys release insulin into the urine
2. BThe liver stops storing glycogen and releases more glucose
3. CThe pancreas releases glucagon, and the liver releases glucose
4. DThe pancreas releases insulin, and cells take up glucose

The field of view of a microscope is 0,5 mm wide. About 10 cells fit across it in a line. What is the approximate width of one cell?

1. A50 µm
2. B5 µm
3. C500 µm
4. D0,5 µm