The _______ is responsible for forming the outer, limiting barrier of a cell
A. peroxisome
B. ribosome
C. mitochondrion
D. plasma membrane
E. centrosome
D
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The binding of a peptide hormone to its receptor starts a biochemical chain of events that changes the pattern of __________.
a. diffusion through the lipid portion of the cell membrane b. enzymatic activity within the cell c. An RNA transcription in the nucleus d. calcium ion release or entry into the cell
Which of the following cartilages is the most inferior?
a. corniculate b. arytenoid c. cricoid d. cuneiform
The minimum stimulus needed to cause muscle contraction is called the ________.
A. innervation B. motor unit C. threshold D. latent period E. twitch
How does blocking retrograde axoplasmic transport in an axon affect the activity of a neuron?
A) The neuron becomes unable to produce neurotransmitters. B) The neuron becomes unable to produce action potentials. C) The soma becomes unable to export products to the synaptic terminals. D) The soma becomes unable to respond to changes in the distal end of the axon. E) The neuron becomes unable to depolarize when stimulated.