In the glucose activation stage of glycolysis, glucose receives a phosphate group from ATP. This reaction is
A) endergonic. B) exergonic. C) fermentation. D) respiration.
A
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Answer the following statements true (T) or false (F)
1. Most transcription factors active in early development are morphogens. 2. Adult stem cells are always unipotent. 3. The shoot meristem is totipotent. 4. A cell's fate is determined while the cell is differentiating. 5. The molecular structure of invertebrate homeotic genes differs significantly from that of mammals.
The typical osmolarity of body fluids in most freshwater invertebrates is about ____ mOsm/L
a. 5 b. 225 c. 300 d. 1000 e. 1500
__________ selection favors intermediate forms of a trait where __________ selection favors extreme forms.
Fill in the blank(s) with the appropriate word(s).
Sometimes, chemical damage to DNA can occur just before DNA replication begins, not giving the repair system enough time to correct the error before the DNA is duplicated. This gives rise to mutation
If the cytosine in the sequence TCAT is deaminated and not repaired, which of the following is the point mutation you would observe after this segment has undergone two rounds of DNA replication? (a) TTAT (b) TUAT (c) TGAT (d) TAAT