A zone of undifferentiated plant cells that can divide rapidly is called a _____
1.cotyledon
2.dermal tissue
3.ground tissue
4.meristem
4
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Why might a point mutation in DNA make a difference in the level of a protein's activity?
A) It might result in a chromosomal translocation. B) It might exchange one stop codon for another stop codon. C) It might delay the rate of DNA replication. D) It might substitute a different amino acid in the active site. E) It might substitute the N-terminus of the polypeptide for the C-terminus.
Spot desmosomes are actually ________ junctions, which allow for slight flexibility in an epithelium
Fill in the blank(s) with correct word
Which of the following lineages contains all of the other lineages in the list?
a. Tetrapoda b. Amniota c. Gnathostomata d. Vertebrata
Which stage of cellular respiration produces the most ATP?
a) acetyl- CoA formation b) glycolysis c) citric acid cycle d) electron transport chain