Which statement regarding the nervous system is true?
A) Sensory neurons convey signals from the central nervous system (CNS) to sensory receptors.
B) Motor neurons convey signals from the CNS to effector cells.
C) The peripheral nervous system (PNS) is composed entirely of nerves.
D) The CNS includes the brain and peripheral nerves.
Answer: B
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Species of Shewanella, Geobacter, and some cyanobacteria have evolved a strategy to enable their use of insoluble compounds as electron acceptors: the production of electrically conductive ________ that transfer electrons from the terminal point in the ETC to a metal surface.
What will be an ideal response?
"I wish my Dad would stop smoking! Doesn't he know that nicotine inhibits the _________ lining his trachea, and when they stop moving, bacteria and viruses can settle down into his lungs causing pneumonia and emphysema?"
A. cellular respiration B. mitochondria C. cilia D. lysosomes
An explanation of observations and data supported by the experimental results of many scientists for many years is
A) a theory. B) a hypothesis. C) scientific method. D) popular opinion. E) a control group.
Two genes are closely linked when _____.
A) the combination of features increases the fitness above that of either trait separately B) the distance between their loci is small C) they are located on homologous chromosomes D) their recombination frequencies are high E) all of the choices are correct