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

In which form do animals store glucose in the liver and muscles?

1. AGlycogen
2. BStarch
3. CCellulose
4. DChitin

What is the main role of the cytoskeleton?

1. AIt joins amino acids into proteins
2. BIt controls which substances enter the cell
3. CIt gives the cell its shape and helps it move
4. DIt stores the genetic code of the cell

What are stomata?

1. ATubes that carry water up the stem
2. BGreen structures in the leaf that store starch
3. CHairs on roots that absorb minerals
4. DSmall pores in leaves that allow gas exchange

Why do root hair cells have long, thin extensions?

1. ATo anchor the plant firmly against strong winds and rain
2. BTo carry out photosynthesis underground
3. CTo increase the surface area for absorbing water
4. DTo store starch for the winter

Почему учёные повторяют эксперимент или используют много объектов?

1. AЧтобы убедиться, что гипотеза доказана
2. BЧтобы не нуждаться в контрольной группе
3. CЧтобы уменьшить влияние случайности на результаты
4. DЧтобы каждый раз менять независимую переменную

How are photosynthesis and aerobic respiration related?

1. ABoth happen only in animal cells, never in plant cells
2. BBoth take place only in chloroplasts
3. CThe products of one are the reactants of the other
4. DBoth release oxygen into the air

Why does cooking oil not mix with water?

1. AOil molecules are nonpolar and cannot form hydrogen bonds with water
2. BOil is denser than water and sinks
3. COil molecules are polar and repel the charged ends of water molecules
4. DWater molecules are nonpolar and avoid each other

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe placebo was harmful to the patients
2. BThe drug is ten times better than the placebo
3. CThe drug works well, because 20% of patients improved
4. DThe drug adds little benefit beyond the placebo