Who postulated the idea that there are "living things" smaller than bacteria (that were not able to be filtered out of solution), and proposed the term "virus"?
A) Louis Pasteur
B) D. Ivanovski and M. Beijerinck
C) Friedrich Loeffler and Paul Frosch
D) Carl Woese
Ans: A) Louis Pasteur
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Which of the following statements DOES NOT support the hypothesis that neoteny contributed to the evolution of modern humans from our common ancestor with chimpanzees?
A. Juvenile Great Apes have large heads (relative to body size) and are less hairy than adult Great Apes. B. Neoteny involves changes in the developmental timing of gene regulation, consistent with the observation that the genome sequence of human and chimp are 99% identical. C. It has been suggested that the human mentality, characterized by questioning and playfulness, are characteristics of juvenile Great Apes. D. Sexual maturity occurs earlier in Great Apes than in humans.
A ________ is a sequence-specific recognition protein with endonuclease activity.
A. restriction endonuclease B. DNA helicase C. DNA ligase D. terminal transferase
For good health, it is important to include ________ in our diets
A) fructose B) monosaccharides C) disaccharides D) polysaccharides
The malarial Plasmodium is difficult for the human immune system to fight off because:
a. as the Plasmodium moves through its series of distinct developmental stages, it produces different cell surface proteins. d. as the Plasmodium moves through its series of distinct developmental stages, it produces different DNA-transcription enzymes. e. it mimics human white blood cells.