Biologia na egzaminy wstępne na pielęgniarstwo: karta pracy z odpowiedziami

In genetics, what is a carrier?

1. AA person who has lost both alleles for the gene, so shows no trait
2. BA person who has a dominant disorder
3. CA person with one recessive allele for a disorder but no symptoms
4. DA person with two recessive alleles who has the disorder

What are stomata?

1. AGreen structures in the leaf that store starch
2. BTubes that carry water up the stem
3. CSmall pores in leaves that allow gas exchange
4. DHairs on roots that absorb minerals

Which carbohydrate forms plant cell walls and acts as dietary fibre?

1. AGlucose
2. BCellulose
3. CGlycogen
4. DLactose

A patient's heart rate is measured four times: 70, 72, 74 and 80 beats per minute. What is the mean?

1. A80 beats per minute
2. B74 beats per minute
3. C73 beats per minute
4. D72 beats per minute

A seedling is 4 cm tall at week 1, 8 cm at week 2, 12 cm at week 3 and 16 cm at week 4. If the trend continues, how tall will it be at week 6?

1. A24 cm
2. B20 cm
3. C18 cm
4. D32 cm

What happens to a protein when it is denatured?

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

After a meal, blood glucose rises. Which response brings it back to normal?

1. AThe pancreas releases glucagon, and the liver releases glucose
2. BThe kidneys release insulin into the urine
3. CThe liver stops storing glycogen and releases more glucose
4. DThe pancreas releases insulin, and cells take up glucose

HIV infects and destroys helper T cells. Why do people with untreated advanced HIV get infections that healthy people rarely get?

1. AThe virus turns harmless microbes into pathogens
2. BHIV kills the normal flora of the skin and gut
3. CTheir immune response is too weak to control normally harmless microbes
4. DHelper T cells make the antibiotics that the body needs to fight infection