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

Where in the cell does glycolysis take place?

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

What do bacteria use flagella for?

1. AStoring food
2. BMaking proteins from amino acids
3. CMoving from place to place
4. DCopying their DNA

What do receptor proteins in the cell membrane do?

1. AThey store the cell's genetic code for making proteins
2. BThey make ATP for the cell
3. CThey digest bacteria that enter the cell
4. DThey bind specific signal molecules, such as hormones

What happens to an enzyme after it has catalysed a reaction?

1. AIt is released unchanged and can be used again
2. BIt becomes part of the product and leaves with it
3. CIt is broken down into amino acids
4. DIt changes into the substrate

Чем насыщенные жиры отличаются от ненасыщенных?

1. AВ них много двойных связей, и они жидкие при комнатной температуре
2. BВ них нет двойных связей C=C, и обычно они твёрдые
3. CОни содержат азот и образуют белки
4. DОни легко растворяются в воде

A bone marrow transplant can treat some blood cancers. Why does it work?

1. AThe donor marrow contains antibiotics that kill cancer
2. BThe transplant replaces the patient's bones
3. CThe donor red cells divide to make more red cells
4. DThe donor stem cells produce new, healthy blood cells

Griffith injected mice with heat-killed harmful bacteria mixed with live harmless bacteria. The mice died, and live harmful bacteria were found in them. What did this show?

1. ABacteria can be killed by the immune system of mice
2. BA substance from the dead bacteria changed the harmless ones
3. CHeat makes harmless bacteria become harmful when they are injected
4. DThe mice were killed by the dead bacteria alone

Какое изменение ускорило бы диффузию через мембрану?

1. AБолее толстая мембрана
2. BБолее низкая температура по обе стороны
3. CБольшая разность концентраций по обе стороны
4. DМеньшая площадь поверхности обмена