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

In an enzyme reaction, what is the substrate?

1. AThe product released at the end
2. BThe substance that the enzyme acts on
3. CThe part of the enzyme that changes shape
4. DThe gene that codes for the enzyme

Which of these hormones is a steroid?

1. ATestosterone
2. BInsulin
3. CGrowth hormone
4. DGlucagon

What do centrioles do in an animal cell?

1. AThey capture light for photosynthesis
2. BThey make lipids for the cell membrane
3. CThey store the cell's digestive enzymes until they are needed
4. DThey help organise the spindle during cell division

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

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

Which polymer is correctly matched with its monomer?

1. AProtein and nucleotide
2. BGlycogen and fatty acid
3. CStarch and glucose
4. DDNA and amino acid

Как обычно размножаются бактерии?

1. AМейозом
2. BОбразованием семян
3. CБинарным делением
4. DПочкованием вирусов

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

After a long course of broad-spectrum antibiotics, a patient develops severe diarrhoea caused by Clostridioides difficile. What is the most likely reason?

1. AThe antibiotics killed normal gut bacteria that kept C. difficile in check
2. BThe antibiotics made the gut lining produce spores
3. CC. difficile was made by the patient's own immune system
4. DThe antibiotics changed some of the harmless gut bacteria into C. difficile