A plant's clock is located in the _____ of plant cells. The clock controls an enzyme that modifies a protein necessary for photosynthesis as the day starts and light energy is available

A) veins
B) roots
C) nuclei
D) stomata


C

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?What gas from the flame can protect the molten weld metal from oxidizing?

A. ?C2H2 B. ?O2 C. ?CO2 D. ?NO2

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Which of the following types of charge is usually employed when a partial charge is required?

A) Liquid B) Negative C) Positive D) Vapor

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Rafters are typically set 16 inches or 24 inches OC and are angled from the top plate of a wall to a(n) _____

a. peak purlin b. top plate c. apex beam d. ridge board

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Displacers used in level measurement systems are __________ of the measured fluid.

A. lighter than an equal volume B. the same weight as an equal volume C. heavier than or equal to thevolume D. half the weight

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