Clumping factor, coagulase, and protein A serve to coat Staphylococcus with host proteins
Indicate whether this statement is TRUE or FALSE.
TRUE
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Echinoderms are members of the Bilateria but many members of the group (e.g., the sea stars) lack a brain, have no specialized sense organs, and have radial nerves that extend down each "arm" from a central nerve ring that surrounds the gut
What was a likely selective pressure in the evolution of this type of nervous system? A. ability to move forward B. role as a predator in the ecosystem C. multicellularity D. possession of an endoskeleton of calcium carbonate E. None of the above.
Many sponges, cnidarians, and echinoderms have few if any external characteristics distinguishing males from females. This seemingly odd structural characteristic is most likely associated with which of these functions?
A) substrate feeding B) reproducing asexually only C) reproducing by spawning (simultaneous release of gametes into the water for fertilization) D) having a gastrovascular cavity that takes up most of the internal space.
Streptokinase is useful for which of the following?
A. producing antibiotics B. cheese production C. biosensors D. dissolving blood clots E. insecticide
Water can dissolves compounds made up of _________ __________ molecules.
Fill in the blank(s) with the appropriate word(s).