Smooth muscles
a. are not striated.
b. have spindle-shaped cells.
c. are found in the walls of hollow structures
such as blood vessels and the stomach.
d. are involuntary.
e. include all of these descriptions
E
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The observable outward manifestation of the genes of an individual is referred to as its
A. blueprint. B. genotype. C. phenotype. D. genetic map. E. pedigree.
Which of the following is NOT TRUE regarding the evolutionary trends from ape-like ancestors to modern humans?
A. The evolution of larger brain size facilitated the evolution of bipedal posture. B. The evolution of bi-pedal posture would have facilitated long-distance travel since walking on two legs is more energetically efficient than four legs. C. The evolution of bi-pedal posture would facilitate tool use by freeing up the hands. D. Many primates are partially bi-pedal as indicated by knuckle-walking.
The simplest animals to display cephalization and centralization of the nervous system are
A) sponges. B) flatworms. C) cnidarians. D) echinoderms.
Acanthamoeba infections are usually transmitted via insects
Indicate whether the statement is true or false