The cell-mediated immune response is brought about by which cells?
A. B cells
B. T cells
C. erythrocytes
D. fibroblasts
E. lysozymes
B. T cells
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At the endodermis is a thin band of hydrophobic material that prevents water passage between cells called the:
A. Casparian strip. B. cortex. C. medulla. D. plasmodesmata. E. parenchyma.
Which of the following explains why leaf primordia develop in spiral or whorled patterns around the stem tip?
A. accumulation of auxin in the stem tip B. depletion of auxin near leaf primordia C. accumulation of auxin in leaf primordia D. loosening of cell walls E. None of these choices is correct
The karyotype designation for a female with X chromosome trisomy is ____________________.Fill in the blank(s) with the appropriate word(s)
Order the following regions of a gene from the most upstream region (1) to the most downstream region (5).1. -35 consensus sequence2. Pribnow box3. coding sequence4. rut site5. terminator
Fill in the blank(s) with the appropriate word(s).