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

What is activation energy?

1. AThe energy needed to start a chemical reaction
2. BThe energy plants take in from sunlight
3. CThe energy stored in a molecule of ATP
4. DThe heat released when a reaction finishes

Каковы строительные блоки (мономеры) белков?

1. AМоносахариды
2. BНуклеотиды
3. CАминокислоты
4. DЖирные кислоты

In science, what is an observation?

1. AA rule that explains all known facts
2. BA conclusion drawn before any data are collected
3. CInformation gathered with the senses or instruments
4. DA guess about why something happens

Эритроцит помещают в чистую воду. Что, скорее всего, произойдёт?

1. AОн набухнет и может лопнуть
2. BЕго размер не изменится
3. CОн сожмётся и сморщится
4. DОн разделится на две клетки

A student's hypothesis is "Salt water slows the growth of bean seedlings." Which is a prediction based on it?

1. ASalt water is made of sodium chloride and water
2. BSeedlings given plain water will die within a week
3. CSeedlings given salt water will grow less than those given plain water
4. DBean seedlings need sunlight and water to grow well

A seedling is 4 cm tall at week 1, 8 cm at week 2, 12 cm at week 3 and 16 cm at week 4. If the trend continues, how tall will it be at week 6?

1. A18 cm
2. B20 cm
3. C24 cm
4. D32 cm

A man has Klinefelter syndrome (XXY). Which error most likely produced it?

1. ACrossing over between chromosome 21 and the X chromosome
2. BA frameshift mutation in one of the genes on the father's Y chromosome
3. CExtra mitosis in the zygote after fertilisation
4. DNondisjunction of the sex chromosomes during meiosis in a parent

A mutation changes one amino acid in an enzyme. In which location is the change most likely to stop the enzyme from working?

1. AIn the gene's stop codon
2. BOn the outer surface, far from the active site
3. CIn the active site
4. DIn a section that is removed after the protein is made