Биология для вступительных экзаменов на сестринские программы: лист заданий с ответами

What is a scientific law?

1. AA statement of what always happens under certain conditions
2. BAn explanation that has been proven wrong
3. CA guess about the cause of something that has not yet been tested
4. DA rule that scientists vote to accept

What is the resolution of a microscope?

1. AHow large the field of view is
2. BHow many times larger it makes the image of the specimen
3. CHow bright the image appears
4. DIts ability to show two close points as separate

Что из перечисленного является липидом?

1. AГликоген — запасная форма глюкозы
2. BДНК
3. CТриглицерид (жир)
4. DГемоглобин

Why do plants wilt when the soil around their roots becomes very salty?

1. ASalt blocks sunlight from reaching the leaves
2. BWater leaves the root cells by osmosis
3. CSalt makes the root cells swell and burst
4. DThe roots take in too much water

What are introns?

1. ACoding sections joined together to form the mature mRNA
2. BNon-coding sections removed from pre-mRNA before translation
3. CShort pieces of DNA made on the lagging strand
4. DCodons that tell the ribosome to stop translation

Матричная цепь ДНК читается как T-A-C. Каков соответствующий кодон мРНК?

1. AT-A-C
2. BU-T-G
3. CA-T-G
4. DA-U-G

Why can O-negative red blood cells be given to patients of almost any blood type in an emergency?

1. AThey carry all of the A, B and RhD antigens
2. BThey have no haemoglobin to react with
3. CTheir plasma contains anti-A and anti-B antibodies
4. DThey carry no A, B or RhD antigens

Матричная цепь ДНК читается как 3'-TACGGA-5'. Какая мРНК с неё образуется?

1. A5'-ATGCCT-3'
2. B5'-AUGCCU-3'
3. C5'-UACGGA-3'
4. D5'-TACGGA-3'