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

Какая органелла производит большую часть АТФ в эукариотической клетке?

1. AРибосома
2. BАппарат Гольджи
3. CМитохондрия
4. DЛизосома

What is the main job of the nucleolus?

1. AIt digests worn-out parts of the cell
2. BIt stores water and salts for the nucleus
3. CIt makes ribosomal RNA and builds ribosome parts
4. DIt releases energy from glucose for the nucleus

Which molecules, made by immune cells, bind to specific antigens?

1. AHormones
2. BAntibodies
3. CPhospholipids
4. DEnzymes

A tall pea plant could be TT or Tt. Which cross will best reveal its genotype?

1. ACross it with a short (tt) plant
2. BCross it with a TT plant
3. CCross it with another tall plant
4. DLet it grow for a longer time

In gel electrophoresis, why does DNA move towards the positive electrode?

1. ADNA has a negative charge from its phosphate groups
2. BDNA has a positive charge from the nitrogen bases it contains
3. CDNA has no charge and moves at random
4. DDNA is pulled by gravity through the gel

What is the role of ribosomal RNA (rRNA)?

1. AIt forms part of the ribosome and helps join amino acids
2. BIt carries the code from DNA to the ribosome
3. CIt stores genetic information in the nucleus
4. DIt brings single amino acids to the ribosome

In snapdragons, flower colour shows incomplete dominance: RR is red, RW is pink and WW is white. Two pink plants are crossed. What phenotype ratio is expected?

1. A1 red : 2 pink : 1 white
2. BAll pink, like the parents
3. C3 red : 1 white
4. D1 red : 1 white

A pondweed plant is placed in water, and a lamp is moved closer to it. The plant gives off more bubbles per minute. What is the best conclusion?

1. AThe bubbles are oxygen, and the lamp heats the water until it boils
2. BThe bubbles are nitrogen, and light breaks down the plant cells
3. CThe bubbles are carbon dioxide, and respiration speeds up with more light
4. DThe bubbles are oxygen, and photosynthesis speeds up with more light