Sequencing of the human genome was officially
completed in 2003 with about __________ percent
of the coding regions deciphered with a high degree
of accuracy.
a. 89
b. 93
c. 95
d. 97
e. 99
Answer: e
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In addition to eutrophication in lakes, which process is being caused by excess nutrients in rivers?
A. warming of the water in the Gulf of Mexico B. introduction of exotic species like Zebra mussels C. the dead zone in the Gulf of Mexico D. decreased plant growth E. clogging of city water lines
Cells are small because cell size depends on environmental temperature. The higher the temperature, the smaller the cell.
a. true b. false
If its cells are striated and abut at the ends so that the cells contract as a unit, the tissue is
a. smooth muscle. b. dense fibrous connective. c. supportive connective. d. cardiac muscle. e. hyaline cartilage.
Two proteins interact to form a multimeric complex. When one of the proteins is mutated, there is a substantial loss of functional activity in the multimeric protein. This type of mutation is classified as __________
A) amorphic B) hypomorphic C) hypermorphic D) neomorphic E) dominant negative