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

Which pigment absorbs light energy for photosynthesis?

1. AKeratin
2. BChlorophyll
3. CHaemoglobin
4. DMelanin

What is the main material in the cell walls of fungi?

1. AChitin
2. BCollagen
3. CPeptidoglycan
4. DCellulose

What is the R group of an amino acid?

1. AThe amino group that is shared by all amino acids
2. BThe peptide bond between two amino acids
3. CThe carboxyl group at one end
4. DThe side chain that differs between amino acids

Why is water good at dissolving salts and sugars?

1. AIts molecules are polar
2. BIt contains carbon atoms
3. CIts molecules are nonpolar
4. DIt has a very low boiling point

What do nitrogen-fixing bacteria do?

1. AThey convert nitrogen gas into compounds that plants can use
2. BThey break down proteins into glucose
3. CThey release nitrogen gas from dead organisms into the air
4. DThey turn carbon dioxide into sugar

Which list puts these human energy sources in order from fastest to use to longest-lasting store?

1. AATP, then glycogen, then fat
2. BGlycogen, then ATP, then fat
3. CATP, then fat, then glycogen
4. DFat, then glycogen, then ATP

A single-celled microbe has a nucleus and a cell wall made of chitin, and it reproduces by budding. What is it most likely to be?

1. AA virus
2. BAn amoeba
3. CA bacterium
4. DA yeast

In snapdragons, flower colour shows incomplete dominance: RR is red, RW is pink and WW is white. Two pink plants are crossed. What phenotype ratio is expected?

1. A1 red : 1 white
2. B1 red : 2 pink : 1 white
3. C3 red : 1 white
4. DAll pink, like the parents