Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Jaką funkcję pełni lizosom?

1. AWytwarza białka z aminokwasów
2. BWychwytuje energię światła dla komórki
3. CTrawi odpady i zużyte elementy
4. DPrzechowuje informację genetyczną komórki

What does gel electrophoresis separate?

1. ACells by their shape
2. BChromosomes by their colour
3. CDNA fragments by size
4. DBlood into plasma and cells

What is the job of the capsule found around some bacteria?

1. AIt holds the bacterium's main chromosome
2. BIt is used to swim through liquids
3. CIt helps the bacterium make energy by photosynthesis
4. DIt protects the cell, for example from white blood cells

Why is a buffer system important in blood?

1. AIt resists changes in pH
2. BIt raises the blood glucose level
3. CIt makes the blood clot faster
4. DIt carries oxygen to the tissues

Dolly the sheep was cloned by putting the nucleus of an adult body cell into an egg cell whose nucleus had been removed. Whose nuclear DNA did Dolly have?

1. AThe sheep that gave the body cell nucleus
2. BThe sheep that gave the egg cell
3. CAn equal mix of all three sheep
4. DThe sheep that carried the pregnancy

How are photosynthesis and aerobic respiration related?

1. ABoth release oxygen into the air
2. BBoth happen only in animal cells, never in plant cells
3. CBoth take place only in chloroplasts
4. DThe products of one are the reactants of the other

A plant that is AaBb is crossed with an AaBB plant. A and B are dominant, and the genes assort independently. What fraction of the offspring show both dominant traits?

1. A3/4
2. B1/2
3. C1/4
4. D9/16

Which statement correctly compares DNA replication and transcription?

1. AReplication copies all the DNA; transcription copies one gene
2. BBoth take place on ribosomes in the cytoplasm
3. CBoth use thymine and deoxyribose in the new strand
4. DReplication makes RNA from DNA; transcription makes DNA from RNA