When two atoms share a pair of electrons, the bonding is referred to as:
A. ionic.
B. covalent.
C. unstable.
D. hydrogen.
B
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Fungi can reproduce both sexually and asexually.
Answer the following statement true (T) or false (F)
What are the helper and inducer cells?
A. B cells B. macrophages C. plasma cells D. T cells E. monocytes
The primary structure of a protein
A) is important for determining the secondary and tertiary structure of a protein. B) is simply the order of amino acids from one end of the protein to another. C) is important both genetically and structurally. D) is the linear sequence of amino acids that are linked together by peptide bonds. E) All of these statements are true.
ALL hyperthermophiles with growth temperature optima above 100°C are found at
a. terrestrial hot sulfur springs. b. the open ocean. c. geothermally heated soil. d. hydrothermal vents.