Užduočių lapas tema Biologija slaugos stojamiesiems egzaminams su atsakymais

What does it mean that a cell membrane is selectively permeable?

1. AIt lets only water molecules cross
2. BIt lets some substances cross but not others
3. CIt lets every substance cross freely in both directions
4. DIt lets no substance cross at all

What is a genetically modified organism (GMO)?

1. AAn organism produced by normal sexual reproduction between two parents
2. BAn organism whose DNA has been changed by genetic engineering
3. CAn organism that has caught a virus
4. DAn organism that has been grown in a greenhouse

What is a zygote?

1. AA body cell that has just completed its first round of mitosis
2. BThe diploid cell formed when a sperm fertilises an egg
3. CAn unfertilised egg cell
4. DA haploid cell made by meiosis

What do the spindle fibres do during cell division?

1. AThey copy the DNA of each chromosome before the cell divides
2. BThey make the new nuclear envelope
3. CThey attach to chromosomes and move them to the poles
4. DThey digest the old cell membrane

Which element is found in all amino acids but not in carbohydrates?

1. AOxygen
2. BNitrogen
3. CHydrogen
4. DCarbon

Kryžminami du heterozigotiniai tėvai (Aa × Aa), o A yra visiškai dominantinis. Koks tikėtinas fenotipų santykis?

1. A3 dominantiniai : 1 recesyvinis
2. BVisi dominantiniai
3. C1 dominantinis : 1 recesyvinis
4. D1 dominantinis : 2 tarpiniai : 1 recesyvinis

A cube-shaped cell has sides of 2 µm. What is its surface area-to-volume ratio?

1. A6 : 1
2. B3 : 1
3. C1 : 3
4. D2 : 1

A patient is given a large volume of hypotonic IV fluid too quickly. What is the most likely effect on the patient's cells?

1. ANothing changes, because cells are not affected by IV fluid
2. BWater moves out of the cells, and they shrink
3. CSalt moves into the cells, and they burst
4. DWater moves into the cells, and they swell