Gaps in the myelin sheath are referred to as:
a. synapses.
b. neuroglia.
c. microglia.
d. Schwann cells.
e. Nodes of Ranvier
E
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Ernest Rutherford's key experiment on alpha particle bombardment of gold foil was important to the development of
A. detection methods for protons. B. alpha particle emitters. C. gold as an element. D. the modern model for atomic structure. E. the concept that atoms have a homogenous distribution of protons throughout the atom.
The common cold is typically caused by a(n)
a. enterovirus. b. retrovirus. c. picornavirus. d. rhinovirus. e. adenovirus.
Which of the following is true of the mutation
that causes cystic fibrosis?
a. it is an insertion mutation b. the protein produced is normal c. the protein produced is prevented from reaching the cell surface d. the protein produced instead of being transported into the nucleus is transported into the Golgi body e. more than one of these is true
The letter “B” from the above figure represents
a. ectoderm. b. endoderm. c. mesoderm. d. neural plate. e. all of these.