Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

Kokiu vienetu dažniausiai nurodomas ląstelės dydis?

1. AMetrais (m)
2. BMikrometrais
3. CKilometrais (km)
4. DLitrais (L)

Which definition of a species is most often used for animals?

1. AAll the animals that eat the same food
2. BA group that can interbreed and have fertile offspring
3. CAny organisms that look alike
4. DAll of the different organisms that live together in one area

How many strands does an RNA molecule usually have?

1. ATwo
2. BThree
3. COne
4. DFour

How does cytokinesis differ between animal cells and plant cells?

1. AAnimal cells build a cell plate; plant cells pinch in with a furrow
2. BOnly plant cells carry out cytokinesis
3. CAnimal cells pinch in with a furrow; plant cells build a cell plate
4. DOnly animal cells carry out cytokinesis

Clostridium tetani grows in deep puncture wounds but is killed by oxygen. How is this bacterium described?

1. AAn obligate aerobe
2. BA photosynthetic bacterium
3. CAn obligate anaerobe
4. DA facultative anaerobe

What is the role of cholesterol in animal cell membranes?

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

PCR starts with one double-stranded DNA molecule, and the number of copies doubles each cycle. How many copies are there after 10 cycles?

1. A1024
2. B20
3. C512
4. D100

In a trial, 20% of patients improve on a new drug and 18% improve on a placebo. What is the best conclusion?

1. AThe drug is ten times better than the placebo
2. BThe placebo was harmful to the patients
3. CThe drug adds little benefit beyond the placebo
4. DThe drug works well, because 20% of patients improved