________________ is one of the earliest antibiotics isolated from a fungus that lives in soil; it acts by inhibiting cell wall synthesis.
Fill in the blank(s) with the appropriate word(s).
Penicillin
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Suppose you discover a new species of animal that does not have body segments, but is triploblastic, eucoelomate, and cephalized. Under the molecular phylogenetic scheme, you would allocate it to which phylum?
A. Mollusca. B. Echinodermata. C. Nematoda. D. Platyhelminthes. E. Arthropoda.
A person suffers a stroke due to a blood clot that reduces blood flow in the brain. She is unable to speak, but is able to
read and understand text. Which scenario best explains the damage caused by the stroke?
a. The cortex of the cerebellum was affected by the reduced blood flow. b. The interruption in blood flow affected the corpus callosum. c. The region of damage was responsible for integration of visual and auditory stimuli. d. The reduced blood flow damaged Wernicke's area of the temporal lobe. e. The reduced blood flow damaged Broca's area of the temporal lobe.
A new influenza strain appears and is spreading rapidly. What measures might be taken by public health agencies to stop the spread?
A) Facilitate access to vaccines. B) Identify and treat people who are infected. C) Educate members of the public about ways to protect themselves. D) Educate the public, promote vaccination, and treat those who are infected. E) Shut down public transportation.
What is the trigger for initiation of bacterial cell replication?
What will be an ideal response?