Which of the following statements most accurately reflects samples from living organisms?
a. animal products have high fat and protein, plants have more sugar
b. animal products have more sugar and starch, plants have more fat and protein
c. animal products have only starch, plants have sugar and fat
d. animal products have high fat and sugar, plants have sugar and starch
a
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Cloning vectors can be distinguished from expression vectors by
A) carrying ori genes for replication of the cloned sequence. B) having a multiple cloning site (MCS). C) having a high copy number per cell. D) lacking a promoter site upstream of the insertion site.
Structures used in recombinant DNA technology to carry the DNA from the cells of one species to the cells of another species are
A) cloning vectors. B) restriction enzymes. C) sticky ends. D) donor DNA.
Approximately how many rainforest species become extinct every minute?
a. one b. two c. five d. ten e. twenty
Blood pH is kept near a value of 7.3-7.5 because of ____.
A. salts B. buffers C. acids D. bases E. water