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

Какова функция лизосомы?

1. AОна переваривает отходы и изношенные части
2. BОна улавливает энергию света для клетки
3. CОна синтезирует белки из аминокислот
4. DОна хранит генетическую информацию клетки

What does DNA replication produce?

1. AA new protein
2. BOne mRNA molecule
3. CFour different DNA molecules
4. DTwo identical DNA molecules

Where in the cell does glycolysis take place?

1. AIn the nucleus
2. BIn the mitochondrial matrix
3. CIn the chloroplast
4. DIn the cytoplasm

Which is an example of negative feedback?

1. AA wound becoming more inflamed over time
2. BSweating when body temperature rises
3. CBlood clotting speeding up once it starts
4. DContractions growing stronger during labour

After gel electrophoresis, which DNA fragments are found furthest from the wells?

1. AThe largest fragments
2. BThe smallest fragments
3. CThe fragments with the most guanine
4. DThe fragments with the most adenine

Why is a buffer system important in blood?

1. AIt carries oxygen to the tissues
2. BIt makes the blood clot faster
3. CIt resists changes in pH
4. DIt raises the blood glucose level

A man with an X-linked recessive disorder (XʰY) has children with a woman who has two normal alleles (XᴴXᴴ). What is expected among their children?

1. AHalf of the sons and half of the daughters are affected
2. BAll daughters are affected, and all sons are carriers
3. CAll daughters are carriers, and no sons are affected
4. DAll sons are affected, and no daughters are carriers

Plasmids with an ampicillin-resistance gene are mixed with bacteria, which are then spread on a plate containing ampicillin. Why do only a few colonies grow?

1. AThe plasmid kills the bacteria that do not grow
2. BAmpicillin makes some bacteria take up the plasmid
3. CAll the bacteria die, and the colonies are fungi
4. DOnly the bacteria that took up the plasmid can survive