For a particular chemical reaction, the enthalpy of the reactants is -400 kJ. The enthalpy of the products is -390 kJ. The entropy of the reactants is 0.2 kJ/K. The entropy of the products is 0.3 kJ/K. The temperature of the reaction is 25 degrees Celsius. What can you conclude about this reaction?

A. It is exergonic
B. It is endergonic
C. it is a redox reaction
D. It is being catalyzed by an enzyme


A

Biology & Microbiology

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Cadherins are associated with ________ junctions.

Fill in the blank(s) with the appropriate word(s).

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Media function testing should be performed on commercially prepared media when:

a. organisms expected to grow on the media demonstrate growth. b. daily as required. c. on all new lots of media. d. only when the identity and growth cha-racteristics appear abnormal.

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Fragile sites are chromosome locations that

A. show an increased number of chromosome bands. B. show a decreased number of chromosome bands. C. are all associated with a specific defective phenotype. D. indicate that carriers are mentally retarded. E. are inherited in a codominant fashion.

Biology & Microbiology

In a typical human secretory cell, which of the following membranes has the largest surface area?

A.) lysosomes B.) plasma membrane C.) smooth ER D.) rough ER E.) nuclear inner membrane

Biology & Microbiology