Робочий аркуш «Біологія для вступних іспитів на медсестринство» з відповідями

Яка основна структура клітинної мембрани?

1. AТовста стінка з пептидоглікану
2. BФосфоліпідний бішар із вбудованими білками
3. CЄдиний шар молекул крохмалю
4. DЖорсткий шар целюлозних волокон і лігніну

Який прилад використовують, щоб побачити окремі клітини?

1. AТелескоп
2. BТермометр
3. CСпектрометр для звуку
4. DМікроскоп

Which enzyme unwinds the DNA double helix and separates the two strands for copying?

1. ALipase
2. BLigase
3. CHelicase
4. DAmylase

A thermometer gives readings of 36,1, 36,1 and 36,2 °C for a water bath that is really at 37,0 °C. How are these readings best described?

1. ANeither accurate nor precise
2. BBoth accurate and precise
3. CPrecise but not accurate
4. DAccurate but not precise

What is the role of ribosomal RNA (rRNA)?

1. AIt stores genetic information in the nucleus
2. BIt brings single amino acids to the ribosome
3. CIt carries the code from DNA to the ribosome
4. DIt forms part of the ribosome and helps join amino acids

In a food chain, producers hold 10 000 units of energy. Roughly how much is passed on to the primary consumers?

1. AAbout 5000 units
2. BAbout 1000 units
3. CAbout 10 000 units
4. DAbout 10 units

Why does cooking oil not mix with water?

1. AWater molecules are nonpolar and avoid each other
2. BOil is denser than water and sinks
3. COil molecules are polar and repel the charged ends of water molecules
4. DOil molecules are nonpolar and cannot form hydrogen bonds with water

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. B100
3. C20
4. D512