A biologist discovered a new animal. Upon studying its embryonic development, she observed radial cleavage with the blastopore developing into an anus. This animal was categorized as a
A. parazoan.
B. protostome.
C. radiata.
D. deuterostome.
E. pseudocoelomate.
Answer: D
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The spinal cord serves four principle functions: conduction, neural integration, locomotion and reflexes.
Answer the following statement(s) true (T) or false (F)
Which of the following is a characteristic of eudicots?
a. vascular tissue arranged in a ring pattern b. a primarily adventitious root system c. pollen with a single pore through the outer layer d. flower parts arranged in multiples of three
The above figure represents
a. neuromuscular junction. b. muscle fiber. c. transport proteins. d. action potential. e. none of these
Which of the following statements about the types and subtypes of the influenza (flu) virus is false?
A. The A(H2N2) and the A(H3N2) strains of the virus require different vaccines. B. Genetic recombination between flu strains from different species is common. C. High mutation rates create more diversity in strains of flu than does genetic recombination. D. Flu subtype is determined by the kinds of proteins representing the H and N protein spikes making up the capsid of the virus. E. Of the three major types of flu virus (A, B, and C), only Type A can occur in humans, other mammals, and birds.