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3 years ago

Where do light-dependent reactions occur?

Biology

2 answers:

kaheart [24]3 years ago

8 0

Answer: b. the thylakoids

Explanation:

Chlorophylls are located in chloroplasts, which organelle is the continent of photosynthesis, ie, where the two important reactions occur: photochemistry, on the thylakoid membranes and biochemistry, in the chloroplast stroma.

The pigments involved in photosynthesis are chlorophylls a and b, carotenoids and phycobilins. Chlorophyll b, carotenoids, and phycobilins constitute the so-called accessory pigments. The energy absorbed by the pigments is transferred to well-defined sites located on the thylakoids membranes, the so-called reaction centers.

Anna [14]3 years ago

6 0

<span>b. the thylakoid...........
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On a certain day, Donnie observes the wind is blowing at 2 miles per hour. A bird nesting near Donnie's house flies three quarte

kipiarov [429]

Answer:

Air speed of bird is $4.17$ mph

Explanation:

let the speed of the bird in still air be "X"

Speed of the bird when it flies in the direction of flow of wind $= X+2$

Speed of the bird when it flies in the opposite direction of flow of wind $= X-2$

The total time taken is equal to $12$ minutes

$= \frac{12}{60} \\= \frac{1}{5}$ hours

The distance in miles is equal to $\frac{3}{4}$ $= 0.75$ miles

$\frac{0.75}{X+2} + \frac{0.75}{X-2} = \frac{1}{5}$

On solving the above equation, we get -

$2 X = (X^2 -4)*\frac{1}{0.75 *5} \\X^2 -4 -0.75 X =0\\X = 4.17$

Air speed of bird is $4.17$ mph

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irga5000 [103]

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Explanation:

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