A strategy used by dissimilatory metal-reducing bacteria that enable their use of insoluble compounds as electron acceptors is to transfer electrons to the metal via external, intermediary compounds such as ________ found in the environment, or their own ________. These compounds are collectively known as ________.
What will be an ideal response?
humic acids, secreted metabolites, electron shuttles
Biology & Microbiology
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The anterior pituitary responds to hormones produced by which organ?
a. pancreas b. adrenal glands c. hypothalamus d. thalamus
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Which of the following enables corals to grow in shallow waters?
a. mutualistic relationships with protists b. nutritionally rich water and silt c. high levels of ocean acidity d. calcium-rich plankton
Biology & Microbiology
Constitutive genes code for proteins that are needed for survival
__________________ Indicate whether the statement is true or false.
Biology & Microbiology