In what ways are hydrogen bonds and ionic bonds similar?
A) Both involve an even sharing of electrons between atoms.
B) Both are based on attraction between two atoms that carry positive charges.
C) Both are based on repulsion between atoms that carry differences in electrical charge.
D) Both are based on attraction between atoms that carry differences in electrical charge.
E) Both are based on attraction between two atoms that carry negative charges.
Answer: D
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Which one of the following complexes does not actively move protons from the mitochondrial matrix to the intermembrane space?
A. Complex I B. Complex II C. Complex III D. Complex IV E. All four complexes actively move protons from the mitochondrial matrix to the intermembrane space.
Killing of graft cells occurs through a complex series of mechanisms including
A. sensitized T cytotoxic cells. B. NK cells. C. erythrocytic cells. D. basophilic cells. E. sensitized T cytotoxic cells AND NK cells.
True or False: Sickle-cell disease is a recessive disease. This means that two individuals without the disease cannot have a child with the disease. Only parents with the disease can pass it on.
Answer the following statement true (T) or false (F)
Which of the following fungus causes ergot poisoning, a common cause of death in Europe in the Middle Ages?
A) Claviceps purpurea B) Candida albicans C) Aspergillus D) Truffles E) Amanita