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

How many micrometres (µm) are in one millimetre?

1. A100
2. B10
3. C1000
4. D1 000 000

What is an organism's genotype?

1. AThe number of cells in its body
2. BThe traits that can be seen or measured
3. CThe alleles it carries for a trait
4. DThe environment in which it lives

Откуда, согласно клеточной теории, берутся новые клетки?

1. AИз минеральных веществ пищи
2. BИз неживого вещества в организме
3. CИз вирусов, проникших в организм
4. DИз уже существующих клеток

Why do chromosomes condense into short, thick shapes before mitosis?

1. ASo that genes can be transcribed more easily
2. BSo that they can be copied more quickly
3. CSo they can be moved apart without tangling or breaking
4. DSo that they can leave through the nuclear pores

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

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

What happens to a protein when it is denatured?

1. AIt loses some of its amino acids but keeps its folded shape
2. BIt turns into a carbohydrate
3. CIt loses its 3D shape but keeps its amino acid sequence
4. DIt becomes more active than before

Fresh liver is dropped into hydrogen peroxide and bubbles form quickly. Boiled liver gives no bubbles. What is the best conclusion?

1. ALiver contains an enzyme that is destroyed by boiling
2. BBoiled liver contains more hydrogen peroxide than fresh liver
3. CHydrogen peroxide is broken down only by heat
4. DThe bubbles are carbon dioxide from respiration

Which parent's gamete decides the biological sex of a human baby, and why?

1. AThe mother's, because she gives two X chromosomes
2. BBoth equally, because each gives one Y chromosome
3. CThe father's, because a sperm carries either an X or a Y
4. DThe mother's, because an egg carries either an X or a Y