Which part(s) of a neuron that conduct(s) an electrical signal towards an adjacent neuron?
a. dendrites
b. cell body
c. axon
d. both dendrites and the axon
e. dendrites, cell body, and the axon
ANSWER: c
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This stage of the cell cycle is characterized by growth and it contains a checkpoint to verify that all of the DNA has been replicated prior to mitosis.
A. G1 B. S C. G2 D. Mitosis E. Cytokinesis
Interaction of a pathogen-associated molecular pattern (PAMP) with a pattern recognition receptor (PRR) results in
A) formation of transmembrane pores that cause cell lysis. B) transmembrane signal transduction that initiates transcription of genes involved in phagocytosis, inflammation, and pathogen killing. C) molecular activation of the adaptive immune system. D) a superantigen reaction that can cause septic shock.
A fungi is best described as a ________
a. seed producing autotroph with cell walls of chitin b. seed producing heterotroph with cell walls of cellulose c. spore producing heterotroph with cell walls of chitin d. spore producing autotroph with cell walls of chitin e. spore producing heterotroph with cell walls of cellulose
Which of these can found in oak wood but not in pine wood?
A. tracheids B. vessel members C. ray cells D. secondary xylem E. secondary phloem