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

What is a haploid cell?

1. AA cell with no nucleus
2. BA cell with an extra chromosome
3. CA cell with one set of chromosomes
4. DA cell with two sets of chromosomes

What does the enzyme DNA ligase do?

1. AIt unwinds the DNA double helix
2. BIt cuts DNA at specific sites
3. CIt makes RNA from a DNA template
4. DIt joins pieces of DNA together

What is the main role of carbohydrates in the human diet?

1. ATo provide a quick source of energy
2. BTo build muscle tissue
3. CTo carry the body's genetic information
4. DTo form antibodies

What causes cohesion between water molecules?

1. ACovalent bonds between neighbouring molecules
2. BIonic bonds between oxygen atoms
3. CMagnetic forces between hydrogen atoms
4. DHydrogen bonds between neighbouring molecules

Which of these is part of the body's innate (non-specific) defence?

1. AMemory B cells from an earlier infection
2. BThe skin and stomach acid
3. CAntibodies made after vaccination
4. DT cells that recognise one virus

У людини з групою крові AB на еритроцитах є обидва антигени, A і B. Який це вид успадкування?

1. AНеповне домінування
2. BУспадкування, зчеплене зі статтю
3. CКодомінування
4. DПовне домінування A над B

An Rh-negative mother gives birth to an Rh-positive baby. Why could a later Rh-positive pregnancy be at risk?

1. AHer red cells may become Rh positive after the birth
2. BThe second baby will be unable to make any red cells
3. CThe first baby's antibodies remain in her blood and attack her
4. DShe may have made anti-D antibodies that cross the placenta

Sweating cools the body. Which property of water best explains this?

1. AIt takes a lot of heat energy to evaporate
2. BIt is a nonpolar solvent
3. CIt has a very low specific heat
4. DIt is less dense as ice than as a liquid