A ________ relationship is one in which two or more kinds of organisms live together in often elaborate and more or less permanent association.
A. mutualistic
B. parasitic
C. symbiotic
D. synergistic
Answer: C
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The following graph represents the concentration of cyclins over the course of the cell cycle. Which of the following statements is TRUE regarding the phase of the cell cycle where the blue arrow is pointing?
A. At this point in the cell cycle, the cell has determined that the DNA is intact, that environmental conditions are favorable, and it is preparing for DNA replication.
B. At this point in the cell cycle, chromosomes have properly aligned on the metaphase plate and are beginning to separate.
C. At this point in the cell cycle, DNA has already been replicated and divided into two daughter nuclei.
D. At this point in the cycle the cell is determining if environmental conditions are favorable for growth and proliferation.
E. At this point in the cycle the cell is continuing to grow and make abundant tubulin proteins.
Collections of lymphoid tissues, called MALT, are strategically placed throughout the respiratory, digestive, and genitourinary systems. Which one of these is located at the end of the small intestine?
What will be an ideal response?
Gram-negative bacteria contain _______ which, when released into the bloodstream, cause fever, low blood pressure, and inflammation.
a. chitin b. cellulose c. peptidoglycan d. lipopolysaccaride
Which of the following organisms possess 80S ribosomes in their cell cytoplasm?
A. Erysipeloid B. Necrotizing fasciitis C. Erysipelas D. Impetigo