You have been asked to explain to a high school class the second law of thermodynamics and how this law affects the students' lives. Using your own words, describe the second law of thermodynamics, and give an example (other than the examples described
in the chapter).
What will be an ideal response?
The second law of thermodynamics explains that all spontaneous reactions tend toward more disorder and that increasing order requires an input of energy. There are many valid examples a student might give. An example could be that heat will flow from a hot object to a cold object but not from cold to hot, because that would mean creating more disorder without adding more energy.
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The inflammatory cytokines IL-1, IL-6, and TNF-? are also
A) opsonizing agents that coat foreign cells. B) activating cytokines that stimulate Th1 cells to replicate. C) capable of producing systemic fever by stimulating the release of prostaglandins in the brain. D) part of the complement system that results in the destruction of foreign cells.
Which of the following occurs in the feedback
inhibition?
a. Coenzymes block enzyme activity. b. Products of metabolic reactions block enzyme activity. c. NADH is altered in electron transport chains. d. ADP is phosphorylated. e. More than one of these occurs in feedback inhibition
Snails and squids belong to the phylum
A. Cnidaria. B. Porifera. C. Platyhelminthes. D. Mollusca. E. Annelida.
Riboswitches exert effects on ________ whereas repressors and inducers exert effects on ________.
A. replication; translation B. translation; transcription