Which of the following organisms is (are)
being used routinely in genetic engineering for
production of drugs?
I. rats
II. yeasts
III. bacteria
a. I and II
b. I and III
c. II and III
d. I, II, and III
e. III only
C
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The main form of nitrogenous wastes released by aquatic invertebrates to their environment is ____
a. nitrate b. ammonia c. uric acid d. amino acids e. urea
An ion is:
a. a type of gas. b. an individually charged particle. c. heavy water. d. water with an extra hydrogen atom. e. a neutrally-charged atom.
An inappropriate immunologic response to some substance is an ________.
A. agglutination B. necrosis C. allergy D. inflammation
The diagram below shows part of a transmembrane protein. The yellow coloured L subunit has a disordered loop within the hydrophobic core of the lipid membrane. Does this then invalidate the general rule that transmembrane proteins span the lipid bilayer as alpha helices or beta sheets? Explain.
What will be an ideal response?