Experimental evidence shows that the process of glycolysis is present and virtually identical in organisms from all three domains, Archaea, Bacteria, and Eukarya. Which of the following hypotheses could be best supported by this evidence?
(A) All organisms carry out glycolysis in mitochondria.
(B) Glycolysis is a universal energy-releasing process and therefore suggests a common ancestor for all forms of life.
(C) Across the three domains, all organisms depend solely on the process of anaerobic respiration for ATP production.
(D) The presence of glycolysis as an energy-releasing process in all organisms suggests that convergent evolution occurred.
Ans: (B) Glycolysis is a universal energy-releasing process and therefore suggests a common ancestor for all forms of life.
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In seed plants, which develops into a female gametophyte?
a. megaspore b. microsporangium c. microspore d. megasporangium e. sporophyte
A condition called ____________________ results in individuals having both male and female sexual structures at
different times in their lives Fill in the blank(s) with the appropriate word(s).
Paleontologists have pieced together from fossils the evolution of the whale from:a
aquatic reptiles. b. four-legged, land dwelling mammals. c. sharks. d. porpoises. e. extinct aquatic birds.
Which of the following is correct regarding the blind spot?
A. It's an area of the retina where rods and cones are concentrated. B. It's caused by a nontransparent area on the cornea. C. It's an area of the retina where there are no rods or cones. D. It's caused by a nontransparent area on the lens.