A bottle of Na in solution and a bottle of Cl in solution are mixed together and the water evaporated. What type of bond will be created between the atoms, and what will be the product?
A. ionic bonds; table salt
B. hydrogen bonds; sodium hydroxide
C. covalent bonds; sodium chlorine
D. carbon bonds; carboxyl groups
Answer: A
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Which of the following examples of basidiomycetes produce multicellular fruiting bodies?
A. mushrooms only B. smuts only C. rusts only D. smuts and mushrooms only E. rusts, smuts, and mushrooms
Protein kinases are enzymes that transfer the terminal phosphate from ATP to an amino acid residue on the target protein. Many are located on the plasma membrane as integral membrane proteins or peripheral membrane proteins
What purpose may be served by their plasma membrane localization? A) ATP is more abundant near the plasma membrane. B) They can more readily encounter and phosphorylate other membrane proteins. C) Membrane localization lowers the activation energy of the phosphorylation reaction. D) They flip back and forth across the membrane to access target proteins on either side.
Based upon the valence numbers of the elements magnesium (2 ) and hydrogen (1 ), predict how many covalent bonds would form between these atoms to achieve the full complement of electrons in their outermost energy shells
A) one B) two C) three D) four
Glucose molecules provide the chemical energy cells use to carry on life processes. Some energy is always lost when cells break down the glucose molecules. Which statement explains how energy is lost in this process?
A Some energy is changed back to glucose. B Some energy is converted into mass. C Some energy is converted into heat. D Some energy is changed into ADP.