Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

Które komórki powstają u człowieka w wyniku mejozy?

1. AKomórki jajowe i plemniki
2. BCzerwone krwinki w szpiku kostnym
3. CKomórki skóry
4. DKomórki wątroby

What do centrioles do in an animal cell?

1. AThey help organise the spindle during cell division
2. BThey capture light for photosynthesis
3. CThey store the cell's digestive enzymes until they are needed
4. DThey make lipids for the cell membrane

What does transfer RNA (tRNA) do?

1. AIt copies DNA in the nucleus
2. BIt joins two DNA strands together
3. CIt brings amino acids to the ribosome
4. DIt carries the code out of the nucleus

Why can DNA profiling (fingerprinting) identify individual people?

1. ADNA in blood differs from DNA in skin
2. BEvery person has a different number of chromosomes in their cells
3. CEach person's genes code for different amino acids
4. DRepeated non-coding DNA regions vary in length between people

Why do red blood cells have a flattened, biconcave disc shape?

1. AIt lets them hold a larger nucleus and more DNA
2. BIt helps them divide faster
3. CIt gives a large surface area for gas exchange
4. DIt makes them stick to vessel walls

The results of an experiment do not support the hypothesis. What should the scientist do next?

1. AChange the data so they fit the hypothesis
2. BRevise the hypothesis and test it again
3. CStop doing any further research on the question
4. DReport that the hypothesis was proven correct

Dlaczego większość komórek jest bardzo mała?

1. AMałe komórki mają duży stosunek powierzchni do objętości
2. BMałe komórki zawierają więcej DNA niż duże
3. CDuże komórki nie mogą zawierać mitochondriów
4. DMałe komórki nie potrzebują tlenu

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. AAll pink, like the parents
2. B1 red : 2 pink : 1 white
3. C3 red : 1 white
4. D1 red : 1 white