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

Что верно для доминантного аллеля?

1. AОн всегда наследуется от матери
2. BОн никогда не проявляется в фенотипе
3. CОн проявляет свой эффект, только когда присутствуют две копии
4. DОн проявляет свой эффект, когда присутствует только одна копия

What does phloem carry in a plant?

1. AChlorophyll to the stem
2. BSugars made in the leaves
3. CWater from the roots only
4. DCarbon dioxide from the air

Which sex chromosomes does a typical human male have?

1. AYY
2. BX only
3. CXX
4. DXY

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

1. AMetaphase
2. BAnaphase
3. CProphase
4. DTelophase

Yeast in bread dough breaks down sugar without oxygen. What does it produce?

1. AEthanol and carbon dioxide
2. BGlucose and oxygen
3. COxygen and water
4. DLactic acid and carbon dioxide

Why does ice float on liquid water?

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

In uncontrolled diabetes, glucose appears in the urine and the person passes large volumes of urine. What is the best explanation?

1. AInsulin makes the kidneys filter more blood
2. BGlucose in the kidney filtrate holds water by osmosis
3. CGlucose is broken down into water in the bladder
4. DGlucose makes the kidneys absorb more water

Cystic fibrosis is caused by a faulty CFTR protein, which forms a chloride channel in the cell membrane. Which process is directly affected?

1. ADiffusion of oxygen molecules through the lipid bilayer
2. BProduction of ATP in the mitochondria
3. CCopying of DNA in the nucleus
4. DMovement of chloride ions through a membrane protein