Describe the difference between an osmoregulator and an osmoconformer
What will be an ideal response?
Animals in estuaries fall under the categories of euryhaline osmoconformers, which tolerate drastic dilution or concentration of their tissue fluids, and osmoregulators that control the concentration of salts in their tissue very closely.
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The chemistry of living systems representing all chemical reactions is called
A. catabolism. B. anabolism. C. metabolism. D. enzymology. E. thermodynamics.
The development of multicellular organisms likely originated from ____
a. colonies of unicellular organisms of the same species b. endocytosis of other cells followed by mitosis c. cooperation between different species of cells d. colonies of numerous species of cells e. endosymbiotic eukaryotes
An antigen is
A) a molecule that can elicit an immune response. B) a nucleic acid only. C) a protein or nucleic acid. D) a protective protein that the immune system produces.
When using embryonic germ-line cells to create transgenic mice, the offspring of the genetically
modified animal will have all transgenic cells in their bodies.
Indicate whether the statement is true or false.