Which of the following is nota feature of the DNA helix proposed by Watson and Crick?
A. double-stranded
B. right-handed
C. antiparallel
D. complementary base pairing
E. two grooves of equal dimensions
E
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In interference competition, two or more populations use the same limiting resource
Indicate whether the statement is true or false.
What does taxol do?
a. interferes with mitosis b. speeds up cell division c. blocks the activity of RNA polymerase d. causes the disassembly of ribosomes e. causes two of the gametes from meiosis to die
During menstruation, cells in the uterine lining secrete ____, which initiates contractions of the uterus
a. prostaglandins b. the corpus luteum c. estrogen d. progesterone e. follicle stimulating hormone
A thylakoid that is placed in a basic solution will synthesize ATP. How is this possible?
A. ATP cannot be broken down at low pH. B. ATP is formed spontaneously at low pH. C. A proton gradient is created by the difference in pH. D. An electron gradient is created by the difference in pH. E. The carbon reactions are blocked in the thylakoid at high pH.