Which of the following is NOT an example of synthetic biology?
A) assembling gene sequences together into genome and creating a living organism from it
B) creating a new metabolic pathway that produces a previously unidentified compound
C) developing a novel polyvalent vaccine
D) making Escherichia coli phototrophic
Answer: C
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Genetic exchange in segmented viruses that allows a zoonotic virus to infect humans is termed
A. antigenic shift. B. hemagglutination. C. genetic reassortment. D. antigenic drift.
Which one of the following terms applies to the phylum Mollusca?
A. protostome B. pseudocoelomate C. Parazoa D. diploblastic E. asymmetry
In early vertebrate embryonic development, a number of pathways, such as Wnt, Hedgehog, and Notch, regulate differentiation and organ formation. They operate by __________
A) formation of new transcription factors at each stage B) transcription activation due to interaction among transcription factors C) cell signaling mediated by receptor binding D) establishing anterior-posterior and dorsal-ventral symmetry E) stimulating MADS box genes
The inner layer of skin that contains blood vessels, nerves, sweat glands, oil glands, and hair follicles is called the ________
A) hypodermis B) dermis C) epidermis D) melanin