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