The K/T event was the transition of plants from water to land.
Answer the following statement true (T) or false (F)
False
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A 200-ml solution of 0.5 M lactic acid was adjusted to a pH of 3.6 . If you add 20 ml of 2.0 M NaOH what will the pH of the solution be? The pKa of lactic acid is 3.6
A. 4.6 B. 3.6 C. 3.0 D. 2.6 E. 2.0
The lumbar and cervical curves of the vertebral column are called
A) secondary curves. B) primary curves. C) quaternary curves. D) tertiary curves. E) None of the answers are correct.
All cells have:
a. a nucleus, but not necessarily DNA b. a plasma membrane, but not necessarily DNA c. cytoplasm, but not necessarily a plasma membrane d. cytoplasm and a plasma membrane, but not necessarily DNA e. cytoplasm, a plasma membrane, and DNA
What is the name of the protein that combines with cyclins to exert local control of the cell cycle?
A) ATPase B) phosphatase C) integrase D) hexokinase E) cyclin-dependent kinase