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

What is a heterotroph?

1. AAn organism that makes its own food by photosynthesis
2. BAn organism that lives only in water
3. CAn organism with no cells
4. DAn organism that gets its food from other organisms

What do bacteria use flagella for?

1. AMoving from place to place
2. BCopying their DNA
3. CStoring food
4. DMaking proteins from amino acids

Где находится большая часть ДНК эукариотической клетки?

1. AВ ядре
2. BВ лизосомах
3. CВ клеточной стенке
4. DВ клеточной мембране

What is meant by independent assortment in meiosis?

1. ADNA is copied separately in each chromosome
2. BHomologous pairs line up randomly, so gametes get different mixes of chromosomes
3. CAll chromosomes from the mother go into the same gamete
4. DSister chromatids stay joined until the end of meiosis, so all gametes are identical

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

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

Результаты эксперимента совпадают с предсказаниями гипотезы. Какой вывод лучший?

1. AГипотеза доказана для всех случаев
2. BДальнейшие эксперименты больше никогда не нужны
3. CГипотеза подтверждена, но не доказана
4. DГипотеза теперь стала законом природы

A karyotype shows 45 chromosomes, with a single X chromosome and no Y. Which condition is this?

1. ADown syndrome
2. BKlinefelter syndrome
3. CTurner syndrome
4. DA typical male karyotype

A pre-mRNA is 3000 bases long, and 1200 bases of introns are removed. If all remaining bases code for amino acids, what is the largest number of amino acids in the protein?

1. A400
2. B1000
3. C600
4. D1800