Which of the following statements about DNA replication is INCORRECT?
A. It begins at multiple origins of replication sites along eukaryotic chromosomes.
B. It proceeds with the addition of new nucleotides to the 3? end of a growing DNA strand.
C. It is powered by the hydrolysis of ATP.
D. Each strand within the DNA double helix is used as a template for synthesis of a new strand.
E. It requires that both strands of the double helix be separated from each other
C. It is powered by the hydrolysis of ATP.
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What gene is encoded in the Xic?
A. Xce B. Xist C. Tsix D. None of these
Which of the following represents the correct order of structures from outside to inside for a stem that
has a vascular cylinder?
a. stele, cortex, epidermis, pith b. epidermis, pith, cortex, stele c. cortex, stele, pith, epidermis d. epidermis, cortex, stele, pith e. stele, epidermis, pith, cortex
Which is an organic molecule?
a. carbon dioxide (CO2) b. water (H2O) c. methane (CH4) d. hydrochloric acid (HCl) e. oxygen (O2)
Which of the following is not true of the Chloroplastida (green algae)?
A. They have chlorophylls a and b. B. They store carbohydrates as starch. C. They are found in fresh and salt water. D. Their cell walls contain chitin.