Mesophelic crenarchaeotes (Thaumarchaeota) have been isolated ________.
A. from marine plankton
B. as symbiotes of sea sponges and sea cucumbers
C. as pathogens of whales and giant squid
D. from rice paddies and lake sediment
Answer: D
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Archaea and Bacteria are unified as prokaryotes in lacking ________ which Eukarya contain, such as golgi
A) membranes B) nuclei C) membrane-enclosed organelles D) nuclei and membrane-enclosed organelles
Discuss energy in reference to Case 1, The First Cell: Life's Origins. The conversion of H2S to sulfuric acid is used as a source of energy by some extremophiles
As described in Case 1, some extremophiles can use hydrogen sulfide gas (H2S) as a source of energy. What can you conclude about the G of the reaction and the relative potential energies of the reactant and product? What will be an ideal response?
Which of the following are common infections of the fetus or neonate that are included int he unified cluster known by the acronym TORCH?
a. Herpes b. Rheumatic fever c. Toxoplasmosis d. Other diseases (syphilis, coxsackievirus, varicella-zoster virus, AIDS, and chlamydia) e. Rubella f. Cytomegalovirus g. Conjunctivitis
The total physical, chemical, and biological requirements of a species are said to be its ________
A) community B) population C) niche D) biosphere