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

What does phloem carry in a plant?

1. AWater from the roots only
2. BSugars made in the leaves
3. CChlorophyll to the stem
4. DCarbon dioxide from the air

Какой прибор используется, чтобы увидеть отдельные клетки?

1. AТермометр
2. BСпектрометр для звука
3. CМикроскоп
4. DТелескоп

В какой органелле происходит фотосинтез?

1. AВ хлоропласте
2. BВ аппарате Гольджи
3. CВ ядре
4. DВ митохондрии

How can bacteria pass antibiotic-resistance genes directly to other bacteria?

1. ABy mitosis, sharing copies of their chromosomes with neighbours
2. BBy meiosis, forming gametes with new alleles
3. CBy osmosis, moving genes in water
4. DBy conjugation, transferring plasmids through a pilus

What is the difference between an antiseptic and a disinfectant?

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

Why can small nonpolar molecules cross the cell membrane easily while ions cannot?

1. AThe membrane carries a strong positive charge
2. BThe membrane is made mostly of long carbohydrate chains
3. CIons are larger than most membrane proteins
4. DThe bilayer's core is made of hydrophobic tails

У светового микроскопа окуляр 10× и объектив 40×. Каково общее увеличение?

1. A4000×
2. B400×
3. C40×
4. D50×

A drug lowered blood pressure in a study of 20 men aged 40 to 50. Why might the result not apply to women over 70?

1. AThe sample did not represent that group
2. BBlood pressure cannot be measured in older women
3. CThe study had a dependent variable
4. DThe results were too precise to be trusted