Which of the following was first produced commercially using recombinant DNA technology?
A. Interleukins
B. Human growth hormone
C. Hepatitis B vaccine
D. Human insulin
Answer: D
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Based upon the comparisons of anoxygenic and oxygenic photosythesis, the entry of oxygen into the atmosphere is most directly attributed to
A) photosystem I. B) the Calvin cycle. C) photoreactivation. D) photosystem II. E) bacteriorhodopsin.
Molecules brought into the cell from the exterior are placed into vesicles for routing to other locations
such as ____.
a. the nucleus b. lysosomes c. mitochondria d. ribosomes e. cholorplasts
The cell in micrograph "IV" is at which stage
of the cell cycle?
a. prophase b. telophase c. interphase d. anaphase e. metaphase
Which genus is the most common resident biota of mouth surfaces?
A. Haemophilus B. Escherichia C. Lactobacillus D. Streptococcus E. Mycobacterium