Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What is a monomer?

1. AA very large molecule that is made of many smaller units
2. BA small unit that joins with others to form a polymer
3. CAn enzyme that breaks down polymers
4. DA molecule that contains no carbon

What is the main job of the large central vacuole in a plant cell?

1. AIt captures light energy for photosynthesis
2. BIt copies DNA before the cell divides
3. CIt stores water and keeps the cell firm
4. DIt assembles proteins from amino acids

What is cytokinesis?

1. AThe condensing of chromosomes in prophase
2. BThe division of the cytoplasm into two cells
3. CThe pairing of homologous chromosomes
4. DThe copying of DNA before division

What is the role of cholesterol in animal cell membranes?

1. AIt carries glucose molecules across the membrane into the cell
2. BIt stores the cell's genetic information
3. CIt keeps membrane fluidity stable as temperature changes
4. DIt forms a rigid wall around the cell

When plotting the results of an experiment, which variable usually goes on the y-axis?

1. AThe dependent variable
2. BThe controlled variable
3. CThe time the experiment started
4. DThe independent variable

In a food chain, which organisms are the producers?

1. AFungi that break down dead material
2. BPredators at the top of the chain
3. CPlants and algae that make food by photosynthesis
4. DAnimals that eat only plants, such as rabbits and deer

A patient with type A blood is given type B red blood cells by mistake. What is the cause of the reaction that follows?

1. AThe patient's A antigens dissolve the donor's haemoglobin
2. BThe donor's B antigens destroy the patient's white blood cells
3. CAnti-A antibodies on the donor cells attack the patient's plasma
4. DAnti-B antibodies in the patient's plasma attack the donor cells

Baltymą sudaro 150 aminorūgščių. Neskaitant stabdymo kodono, kiek iRNR bazių jį koduoja?

1. A300
2. B50
3. C450
4. D150