That the ancient Earth's atmosphere lacked oxygen was beneficial because oxygen combines with organic molecules to prevent them from forming polymers.
a. true
b. false
Ans: a. true
Biology & Microbiology
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Secondary structures are stabilized by which type of interaction?
A. hydrophobic clustering B. disulfide linkages C. ionic bonding D. hydrogen bonding E. van der Waals forces
Biology & Microbiology
Animal viruses have the ability to attach to and enter almost any animal host cell.
Answer the following statement true (T) or false (F)
Biology & Microbiology
The type of bond that would form from the transfer of an electron from one atom to another, shown below, is a(n) ________ bond.
a. ionic b. covalent c. hydrogen d. isotopic d. atomic
Biology & Microbiology
Embryonic development begins with
A. gastrulation. B. the first cell division. C. fertilization. D. the development of the blastocyst. E. implantation.
Biology & Microbiology