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The section of the electromagnetic spectrum used for photosynthesis is ___. A) infrared B) ultraviolet C) x-ray D) visible light
D) visible light
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User: The section of the electromagnetic spectrum used for photosynthesis is ___. A) infrared B) ultraviolet C) x-ray D) visible light

Weegy: D) visible light
Expert answered|feurem|Points 1266|

User: The individual flattened stacks of membrane material inside the chloroplast are known as ___. A) grana B) stroma C) thylakoids D) cristae

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Asked 5/17/2011 8:10:33 AM
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Is (8, -1) a solution of the system, 2x + 3y = 13 and x - y = 9? A) yes B) no
Weegy: y+4=2x User: Is (-2, -5) a solution of the system, 3x + 2y = 4 and 2x - 5y = -29? A) yes B) no Weegy: yes User: Graph the two equations to solve the system. What is the ordered pair solution? x + y = 6 and x - y = 4 A) (4, 2) B) (6, 2) C) (5, 1) D) no solution Weegy: What is the solution as an ordered pair?. x = 2y - 2 and 3x - y = 14 we have two equations: x - 2y = -2 and 3x - y = 14 There is equality between both equations, so ... [ ] (More)
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Expert Answered
Updated 5/16/2011 10:03:38 AM
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No, (-2, -5) is NOT a solution of the system, 3x + 2y = 4 and 2x - 5y = -29.

Plug it in: 3(-2) + 2(-5) = 4, which equals -6 + (-10) = 4, which is already not correct. -16 does not equal -4.

YES, (8, -1) is a solution of the system, 2x + 3y = 13 and x - y = 9.

The answer to x + y = 6 and x - y = 4 is C) (5, 1)
Added 5/16/2011 10:03:38 AM
Most enzymes end in the suffix ___. A) -opsin B) -ase C) -ose D) none of these, there is no such rule
Weegy: B) -ase User: The contraction of muscles is an example of a ___ reaction. A) coupled B) exergonic C) endergonic D) reversible (More)
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Asked 5/17/2011 7:44:56 AM
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The contraction of muscles is an example of a ___ reaction. A) coupled B) exergonic C) endergonic D) reversible
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Updated 5/17/2011 8:15:31 AM
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C) endergonic.

An input of energy in the form mof ATP is needed.
Added 5/17/2011 8:15:31 AM
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