How is the diffusion of oxygen and carbon dioxide related to their concentration gradients?
What will be an ideal response?
Oxygen and carbon dioxide molecules always move from areas of higher concentration to areas of lower concentration.
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Which of the following statements is NOT true about the cell cycle?
a. M phase is after S phase b. In S phase, all the DNA in the cell is duplicated c. G1 and G2 together encompass interphase d. Prophase is part of M phase e. Cells not actively growing are in G0
The thymus produces ________, a hormone that stimulates the maturation of specialized white blood cells called T cells
A) testosterone B) thyroxine C) ACTH D) thymosin E) insulin
____________________ is a vascular tissue that conducts water and dissolved minerals.
A. Phloem B. Mesophyll C. Epidermal D. Xylem E. Sclerenchyma
Rubisco has 16 subunits joined together to make a functional unit. Eight of the subunits are large, the
other 8 are small. Where on this enzyme are the active sites located?
a. on each of the 8 large subunits b. on each of the 8 small subunits c. on one of the 8 large subunits d. on one of the 8 small subunits e. on each of the 16 subunits