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

What is a monomer?

1. AA very large molecule that is made of many smaller units
2. BA molecule that contains no carbon
3. CA small unit that joins with others to form a polymer
4. DAn enzyme that breaks down polymers

Каковы мономеры нуклеиновых кислот, например ДНК?

1. AАминокислоты
2. BМолекулы глюкозы
3. CНуклеотиды
4. DМолекулы глицерина

What is the main role of carbohydrates in the human diet?

1. ATo build muscle tissue
2. BTo form antibodies
3. CTo provide a quick source of energy
4. DTo carry the body's genetic information

Why is the ABO blood group system an example of multiple alleles?

1. AThe gene is found on several chromosomes
2. BThere are three alleles of the gene in the population
3. CBlood type is controlled by many separate genes
4. DEach person carries three different alleles of the ABO gene

What happens during telophase of mitosis?

1. AThe chromosomes line up across the middle of the cell
2. BThe DNA is copied for the next division
3. CThe sister chromatids are pulled apart
4. DA nuclear envelope forms around each set of chromosomes

When plotting the results of an experiment, which variable usually goes on the y-axis?

1. AThe dependent variable
2. BThe independent variable
3. CThe time the experiment started
4. DThe controlled variable

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. A1000
2. B1800
3. C400
4. D600

A child's DNA profile has bands A, B, C and D. The mother has bands A and C. Man 1 has bands B and D, man 2 has A and E, and man 3 has C and F. Which man could be the biological father?

1. AMan 1
2. BNone of them
3. CMan 3
4. DMan 2