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

Which of these diseases is caused by a virus?

1. AMalaria
2. BInfluenza
3. CTuberculosis
4. DAthlete's foot

What do centrioles do in an animal cell?

1. AThey capture light for photosynthesis
2. BThey make lipids for the cell membrane
3. CThey help organise the spindle during cell division
4. DThey store the cell's digestive enzymes until they are needed

Which group of biomolecules forms the basic bilayer of the cell membrane and also stores long-term energy?

1. ACarbohydrates
2. BLipids
3. CNucleic acids
4. DProteins

After gel electrophoresis, which DNA fragments are found furthest from the wells?

1. AThe largest fragments
2. BThe fragments with the most adenine
3. CThe smallest fragments
4. DThe fragments with the most guanine

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

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

Which element is found in all amino acids but not in carbohydrates?

1. AHydrogen
2. BOxygen
3. CNitrogen
4. DCarbon

At 100× total magnification, the field of view of a microscope is 2 mm wide. What is its width at 400×?

1. A8 mm
2. B2 mm
3. C0,2 mm
4. D0,5 mm

Two plants are crossed, and about half of the offspring show the dominant trait and half show the recessive trait. What are the most likely genotypes of the parents?

1. AHomozygous dominant × homozygous recessive
2. BHeterozygous × homozygous recessive
3. CHomozygous dominant × heterozygous
4. DHeterozygous × heterozygous