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ROUND 1

By Jessica Daniels,2014-07-11 14:04
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ROUND 1 ...

ROUND 9

2006 PACE National Scholastics ChampionshipROUND 9

Related Tossup/Bonus

1. The Hill reaction describes the release of molecular oxygen from them, and the turnip

    yellow mosaic virus causes them to clump. The “Tic” and “Toc” complexes are found on

    their outer and inner envelopes. They are comically oversized in the Cylindrocapsaceae

    family of algae. The highly ordered array of units known as the quantasome is found in

    their lamellae, and is a site for reactions involving carotenoid and other pigments of

    Photosystems I and II. For 10 points, name these organelles that contain grana and

    thylakoids, the site of atmospheric carbon dioxide fixation and photosynthesis in plants.

    ANSWER: chloroplasts <Wolpert>

Bonus: Its action spectrum in algae was determined by T. W. Englemann. It oxidizes

    water and reduces carbon dioxide to form carbohydrates, releasing oxygen. For 10 points

    each:

    [10] This is the aqueous medium enclosed by thylakoid lamellae that contains the

    enzymes needed for carbon assimilation.

    ANSWER: stroma [10] Severo Ochoa showed that this molecule is the biological version of the Hill Reagent.

    It acquires two hydrogen atoms and is used in the Calvin cycle to convert carbon dioxide

    into glucose.

    ANSWER: nicotinamide adenine dinucleotide phosphate [accept NADP]

    <Luo>

2. Among the significant battles which took place here was one ending Marcus

    Aurelius’s war with the Marcomanni, where that emperor died. A more modern action

    here was won by the decisive action of the Polish king J