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

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1.Лёгкая

What is a trait that is controlled by many genes called?

  1. AA codominant trait
  2. BA polygenic trait
  3. CA recessive trait
  4. DA sex-linked trait
2.Лёгкая

Which kind of organism causes malaria?

  1. AA protist carried by mosquitoes
  2. BA virus spread by coughing
  3. CA fungus that grows on skin
  4. DA bacterium carried in water
3.Лёгкая

What is cytokinesis?

  1. AThe division of the cytoplasm into two cells
  2. BThe copying of DNA before division
  3. CThe condensing of chromosomes in prophase
  4. DThe pairing of homologous chromosomes
4.Средняя

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

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

How do embryonic stem cells differ from most adult stem cells?

  1. AThey are found only in plants, while adult stem cells are found in animals
  2. BThey can become almost any cell type, while adult stem cells are more limited
  3. CThey are haploid, while adult stem cells are diploid
  4. DThey can no longer divide, while adult stem cells divide quickly
6.Средняя

Why is water good at dissolving salts and sugars?

  1. AIts molecules are nonpolar
  2. BIts molecules are polar
  3. CIt contains carbon atoms
  4. DIt has a very low boiling point
7.Сложная

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

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

In the Hershey–Chase experiment, viruses were labelled with radioactive phosphorus in their DNA or radioactive sulfur in their protein. Only the phosphorus entered the infected bacteria. What did this show?

  1. AProtein, not DNA, is the genetic material of the virus
  2. BViruses contain no DNA at all
  3. CDNA, not protein, is the genetic material of the virus
  4. DBacteria take up any radioactive substance

Ответы

  1. 1. B · A polygenic trait
  2. 2. A · A protist carried by mosquitoes
  3. 3. A · The division of the cytoplasm into two cells
  4. 4. C · The dependent variable
  5. 5. B · They can become almost any cell type, while adult stem cells are more limited
  6. 6. B · Its molecules are polar
  7. 7. D · The antibiotics killed normal gut bacteria that kept C. difficile in check
  8. 8. C · DNA, not protein, is the genetic material of the virus

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