Actinoplanetes have extensive ________ mycelia.
Fill in the blank(s) with the appropriate word(s).
substrate
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Sharks are osmoconformers that maintain osmolarity with the saltwater but keep ion concentrations similar to osmoregulators. To do this they must use non-ions to osmoregulate, such as urea. As such sharks take on excess ions from the water because their bodies are at a significantly lower ion level than saltwater. How are the excess ions eliminated?
A. diffusion across the gills B. active transport across the gills C. Rectal gland D. none of the answers
Which hormone is inhibited by hypothalamic somatostatin and can be used to treat short stature in children?
A. insulin-like growth factor I B. testosterone C. estradiol D. cortisol E. growth hormone
Some microbial control agents are able to ________ cell proteins by breaking bonds that maintain the native state, the three-dimensional configuration of the proteins.
A. bind B. mutate C. dissolve D. denature
Malpighian tubules are used for excretion
____________________ Indicate whether the statement is true or false.