Keratin is a mixture of fats and waxes that inhibits growth of harmful bacteria
____________________ Indicate whether the statement is true or false.
F, Sebum
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Which iron species is produced primarily from iron smelting and rarely is produced by microbial-mediated processes?
A) ferric iron (Fe3+) B) ferrous iron (Fe2+) C) ferrulic iron (Fe1+) D) iron (Fe0)
Viruses that become established as stable parts of the host cell genome are called
A. lethal. B. potent. C. temperate. D. virulent.
In living organisms, chemical reactions responsible for growth, repair, and nutrition are collectively referred to as:
a. development b. metabolism c. adaptation d. genetics e. homeostasis
Identify the features unique to protostome development.
A. Coelom forms by a splitting of the mesoderm, the blastopore becomes the anus, and the cleavage is spiral. B. Coelom forms by a splitting of the mesoderm, the blastopore becomes the mouth, and the cleavage is spiral. C. Coelom forms by a splitting of the mesoderm, the blastopore becomes the mouth, and the cleavage is radial. D. None of the features listed are unique to the protostomes.