What type of bonding is likely to occur between two water molecules or strands of DNA?
A. covalent
B. ionic
C. hydrogen
D. both hydrogen and covalent
E. both hydrogen and ionic
C. hydrogen
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In the first step in oogenesis
A) a primary oocyte divides to form a secondary oocyte and a first polar body. B) an oogonium accumulates cytoplasm and DNA replicates. C) a stem cell divides to yield an oogonium and a spermatogonium. D) an oocyte divides to yield two polar bodies.
What radiolabeled substance did Hershey and Chase use to label the protein component of the bacteriophage in their study to determine whether protein or DNA was necessary for phage production?
A) nitrogen B) carbon C) sulfur D) phosphorus E) iodine
Rank the following chemical bonds from weakest to strongest:
a. hydrogen, ionic, covalent b. hydrogen, covalent, ionic c. ionic, hydrogen, covalent d. ionic, covalent, hydrogen e. covalent, ionic, hydrogen
Plants that have foreign DNA inserted into their genome for the purpose of producing products beneficial to humans are referred to as
A) recombinants. B) mutated. C) transgenic. D) inferior. E) genetically spliced.