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

What is a bacteriophage?

1. AA bacterium that infects viruses
2. BA fungus that kills bacteria
3. CA white cell that eats bacteria
4. DA virus that infects bacteria

Which of these diseases is caused by a virus?

1. AAthlete's foot
2. BInfluenza
3. CTuberculosis
4. DMalaria

What is a heterotroph?

1. AAn organism that lives only in water
2. BAn organism that makes its own food by photosynthesis
3. CAn organism that gets its food from other organisms
4. DAn organism with no cells

What happens in the lytic cycle of a virus?

1. AThe viral DNA joins the host DNA and stays inactive for a long time
2. BThe virus makes many copies in the host cell, which then bursts
3. CThe host cell makes antibodies against the virus
4. DThe virus divides by binary fission outside the cell

What is the difference between an antiseptic and a disinfectant?

1. AAntiseptics are used on living tissue; disinfectants are used on objects
2. BAntiseptics kill all spores; disinfectants kill none
3. CAntiseptics are antibiotics; disinfectants are vaccines
4. DAntiseptics are used on objects and floors; disinfectants are used on skin

The genetic code is described as nearly universal. What does this mean?

1. AAll organisms have the same number of chromosomes in their cells
2. BAll organisms have exactly the same genes
3. CEvery cell in the body makes the same proteins
4. DThe same codons mean the same amino acids in nearly all organisms

The coding part of an mRNA is 900 bases long, including the start codon and the stop codon. How many amino acids are in the protein?

1. A299
2. B300
3. C900
4. D298

A cell is 0,00002 m wide. Which value is equal to this width?

1. A0,2 mm
2. B20 µm
3. C2 µm
4. D200 µm