-NITRATE ASSIMILATION-

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Presentation transcript:

-NITRATE ASSIMILATION- BIOCHEMISTRY QUIZ -NITRATE ASSIMILATION-

1 The reservoir for nitrogen is ... a. the atmosphere. b. rocks. c. ammonia. d. nitrates. e. amino acids.

2 Higher plants most often absorb nitrogen from the soil in the form of ... a. N2. b. nitrites. c. ammonia. d. nitrates. e. amino acids.

3 NO3- + NADH  NO2- + NAD+ This is the reaction of ... Nitrification Denitrification Nitrogen fixation Nitrate reduction Nitrite reduction

4 NO3- + NADH  NO2- + NAD+ The reaction is catalyzed by ... Glutamate dehydrogenase / GDH Glutamate synthase / GOGAT Glutamin synthetase / GS Nitrate reductase Nitrite reductase

5 NO3- + NADH  NO2- + NAD+ The reaction takes place in the ... Vakuola Chloroplast Leucoplast Cytosol I dont know

6 NO2- + reduced ferredoxin  NH4 + oxidized ferredoxin The reaction is catalyzed by ... Glutamate dehydrogenase / GDH Glutamate synthase / GOGAT Glutamin synthetase / GS Nitrate reductase Nitrite reductase

7 The reaction takes place in the ... Vakuola Chloroplast Leucoplast NO2- + reduced ferredoxin  NH4 + oxidized ferredoxin The reaction takes place in the ... Vakuola Chloroplast Leucoplast Cytosol I dont know

8 NH4 + glutamate + ATP  glutamine + ADP + Pi The reaction is catalyzed by ... Glutamate dehydrogenase / GDH Glutamate synthase / GOGAT Glutamin synthetase / GS Nitrate reductase Nitrite reductase

9 Which of the following amino acids is the smallest of all amino acids? Alanine Serine Valine Glycine I dont know

10 Which of the following amino acids can form a special covalent bond called a disulfide bond? Tyrosine Methionine Cysteine Lysine I dont know

THE END

KUNCI JAWABAN 1. A 2. D 3. D 4. D 5. D 6. E 7. B 8. C 9. D 10. C