Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

What is a neuron?

1. AA muscle cell that contracts
2. BA bone cell that stores calcium
3. CA blood cell that carries oxygen around the body
4. DA nerve cell that carries electrical signals

What does gel electrophoresis separate?

1. AChromosomes by their colour
2. BBlood into plasma and cells
3. CDNA fragments by size
4. DCells by their shape

What are the three parts of a nucleotide?

1. AAn amino group, a sugar and a fatty acid
2. BA carboxyl group, a base and a lipid
3. CA phosphate, a sugar and a nitrogen base
4. DA glycerol, a phosphate and a fatty acid

Matrycowa nić DNA ma sekwencję T-A-C. Jaki jest odpowiadający jej kodon mRNA?

1. AA-T-G
2. BA-U-G
3. CT-A-C
4. DU-T-G

Lactose (milk sugar) is a disaccharide. Which two monosaccharides is it made of?

1. AGlucose and fructose
2. BGlucose and glucose
3. CGlucose and galactose
4. DFructose and galactose

What does it mean that a person's blood is Rh negative?

1. ATheir plasma has no antibodies at all
2. BTheir red cells lack the RhD antigen
3. CTheir red cells carry extra RhD antigen
4. DTheir red cells lack the A and B antigens

A green plant is kept in a sealed jar in complete darkness for a day. What happens to the carbon dioxide level in the jar?

1. AIt stays the same, because plants do not respire
2. BIt falls, because plants take in more CO₂ when they respire in the dark
3. CIt falls, because the plant keeps photosynthesising
4. DIt rises, because the plant respires but cannot photosynthesise

People who carry one sickle cell allele are more resistant to malaria. Why is the allele common in regions where malaria is widespread?

1. ANatural selection favours the heterozygotes there
2. BMalaria causes the sickle cell mutation directly
3. CThe allele is dominant, so it spreads by itself
4. DPeople with two sickle alleles are fully healthy there