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

What is a monomer?

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

What is the correct order of the phases of mitosis?

1. AMetaphase, prophase, anaphase, telophase
2. BTelophase, anaphase, metaphase, prophase
3. CProphase, anaphase, metaphase, telophase
4. DProphase, metaphase, anaphase, telophase

What is a eukaryote?

1. AA virus that infects animal cells
2. BAn organism made of a single cell without a nucleus
3. CAn organism that lives only in extreme heat
4. DAn organism whose cells have a nucleus

Why do plants wilt when the soil around their roots becomes very salty?

1. AThe roots take in too much water
2. BSalt blocks sunlight from reaching the leaves
3. CWater leaves the root cells by osmosis
4. DSalt makes the root cells swell and burst

When most people in a community are vaccinated, people who cannot be vaccinated are also protected. Why?

1. AThe pathogen has too few hosts to spread easily
2. BThe pathogen mutates into a harmless form
3. CVaccinated people make antibodies for others
4. DThe vaccine spreads from person to person

В какой фазе митоза сестринские хроматиды растаскиваются к противоположным полюсам?

1. AВ интерфазе
2. BВ метафазе
3. CВ анафазе
4. DВ профазе

An Rh-negative mother gives birth to an Rh-positive baby. Why could a later Rh-positive pregnancy be at risk?

1. AHer red cells may become Rh positive after the birth
2. BThe first baby's antibodies remain in her blood and attack her
3. CShe may have made anti-D antibodies that cross the placenta
4. DThe second baby will be unable to make any red cells

Two parents are both carriers of cystic fibrosis, an autosomal recessive disorder. They have three children. What is the probability that none of the three is affected?

1. A3/4
2. B9/16
3. C27/64
4. D1/64