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

Какие клетки образуются путём мейоза у человека?

1. AКлетки печени
2. BКлетки кожи
3. CЭритроциты в костном мозге
4. DЯйцеклетки и сперматозоиды

What does it mean that a cell membrane is selectively permeable?

1. AIt lets no substance cross at all
2. BIt lets every substance cross freely in both directions
3. CIt lets some substances cross but not others
4. DIt lets only water molecules cross

Какая структура есть у растительных клеток, но отсутствует у животных?

1. AКлеточная мембрана
2. BМитохондрия
3. CРибосома
4. DКлеточная стенка

What is the role of cholesterol in animal cell membranes?

1. AIt forms a rigid wall around the cell
2. BIt stores the cell's genetic information
3. CIt keeps membrane fluidity stable as temperature changes
4. DIt carries glucose molecules across the membrane into the cell

A person catches chickenpox once and does not usually become ill with it again. Why?

1. AThe skin becomes thicker after the first infection
2. BAntibodies from the first infection turn into new viruses
3. CMemory cells give a faster, stronger response the next time
4. DThe virus stays in the blood and kills new viruses

In a eukaryotic cell, where does transcription take place?

1. AOn ribosomes in the cytoplasm
2. BIn the nucleus
3. CIn the lysosomes
4. DIn the Golgi apparatus

A nurse notices that patients who used a new mouthwash had few mouth infections. No other patients were studied. What is most needed before concluding that the mouthwash works?

1. AA longer explanation in the report
2. BA comparable group that does not use the mouthwash
3. CA survey asking patients if they liked it
4. DA larger bottle of the same mouthwash for each patient

Two parents are both AaBbCc, and the three genes assort independently. What is the probability that a child is aabbcc?

1. A3/64
2. B1/64
3. C1/8
4. D1/16