Which organism(s) ferment milk lactose, producing acids that curdle the milk?
A. Streptococcus lactis and Lactobacillus
B. Leuconostoc mesenteroides
C. Propionibacterium
D. Spirulina
E. Saccharomyces cerevisiae
Answer: A
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Which information is most useful?
What will be an ideal response?
Scientists began to question the perfection of the “great chain of being” partially because of their studies in ____
a. radiometric dating b. uniformity c. meteorology d. astrobiology e. comparative morphology
Refer to the accompanying figure. Which two figures in the accompanying illustration represent inhalation steps of the
respiratory cycle?
a. 1 and 3
b. 1 and 2
c. 2 and 3
d. 2 and 4
e. 3 and 4
Which of the following is NOT a goal of recombinant DNA technology?
A) combining genetic material from more than one organism to produce new useful organisms B) making it possible to clone humans C) eliminating undesirable traits from livestock or crops D) being able to remove or correct damaging traits in humans E) creating organisms capable of producing useful products