________ is the total energy change that accompanies a chemical reaction.

A. Enthalpy
B. Free energy
C. Synergy
D. Entropy


Answer: A

Biology & Microbiology

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a. roots. b. bacteria. c. fungus roots. d. isolated plants. e. small animals found in agricultural soils

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Which of the following features were required for the the evolution of the amphibians?

A. notochord, vertebrae, jaws, bony skeleton, lungs and 4 limbs B. notochord, vertebrae, jaws, bony skeleton, lungs and amniotic eggs C. notochord, mammary glands, jaws, bony skeleton, lungs and 4 limbs D. notochord, vertebrae, jaws, cartilaginous skeleton, lungs and 4 limbs

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Down syndrome involves trisomy of chromosome number

a. 3. b. 5. c. 15. d. 19. e. 21.

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The classic Hershey and Chase (1952 ) experiment that offered evidence in support of DNA being the genetic material in bacteriophages made use of which of the following labeled component(s)?

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