A covalent bond is formed between an anion and a cation.
Answer the following statement true (T) or false (F)
False
Biology & Microbiology
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Which respiratory surface lacks physical protection from the external environment?
a. tracheal system tubes b. human lungs c. external gills d. internal gills e. bird lungs
Biology & Microbiology
The anti-bacterial peptides secreted by frogs and toads is produced by:
a. epithelial cells. b. goblet cells. c. endothelial cells. d. sweat glands. e. oil glands
Biology & Microbiology
Crohn's diseas
What will be an ideal response?
Biology & Microbiology
Penicillin was discovered by accident by
A) Alexander Fleming. B) Paul Ehrich. C) Edward Jenner. D) Robert Koch. E) Joseph Lister.
Biology & Microbiology