For every six CO2 molecules fixed, how many triose phosphates are exported from the chloroplast?
A. 12
B. 10
C. 6
D. 2
E. 1
D
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A biotech startup is developing a process that would allow clients the opportunity to clone their deceased dogs from a small tissue sample. The nuclei from deceased pets are confirmed to be intact and viable before and after they are excised and inserted into egg cells harvested from a donor dog. The egg cell’s own nucleus is carefully removed before the new nucleus is inserted and tested for damage that might cause the egg’s DNA to leak into the cell’s cytoplasm. After the nuclear transplant occurs, the egg cell is chemically stimulated to begin dividing as if it was a fertilized egg. The process works flawlessly, except for the fact that the clones inevitably develop symptoms of fatigue and respiratory problems. What is the most likely source of these symptoms?
a. The chemicals used to induce embryo development have damaged the implanted DNA. b. Implanting a nucleus in the egg causes structural weaknesses in the plasma membrane. c. Mitochondria from the egg donor contain a genetic defect that is inherited by the clones. d. Fatigue and respiratory problems are an autoimmune response to foreign DNA.
Which group of mammals exhibits the widest
distribution and greatest diversity? a. marsupials b. monotremes c. placentals d. marsupials and monotremes e. placentals and monotremes
At high population density, __________ is favored,
investing more time and energy in fewer, higher quality offspring. Fill in the blank(s) with the appropriate word(s).
Herbivores are unable to synthesize about half of the 20 ________ that are required to make proteins
Fill in the blank(s) with correct word