Which of the following scientists suggested
that RNA may have been the first
informational molecule?
a. Crick and Orgel
b. Crick and Watson
c. Crick and Chargaff
d. Watson and Orgel
e. Watson and Chargaff
A
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The sugar phosphate backbone of the DNA stores genetic information
Indicate whether the statement is true or false
Which of the following sequences best represents the path blood takes through vessels as it leaves and returns to the heart?
a. heart capillaries arterioles veins venules arteries heart b. heart veins venules capillaries arterioles arteries heart c. heart arteries capillaries arterioles venules veins heart d. heart arteries arterioles capillaries venules veins heart
The ribs and sternum are considered to be part of
a. both the axial skeleton and the appendicular skeleton. b. the axial skeleton. c. neither the axial skeleton nor the appendicular skeleton. d. the appendicular skeleton. e. the adaxial skeleton
A learned behavior is
A. speaking English. B. driving. C. singing. D. All of these answers are true.