What is the significance of the fact that the loop of Henle extends into the medulla of the kidney with sections that run antiparallel to one another?
A. It maintains the concentration gradient in
the kidney.
B. It generates the concentration gradient in
the kidney.
C. It contains more aquaporins.
D. It is permeable to urea on one side, but not
the other.
B
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The physical distribution of cytoplasmic material into the two daughter cells in plant cells is referred to as:
A. The gap phase B. Cytokinesis C. Binary fission D. Interphase
How can one distinguish between annuals, biennials, and perennials?
A. How tall they grow. B. The number of flowers they produce. C. The amount of root development. D. The environment they grow in. E. The time from seed germination to seed production.
The use of which commonly employed medication may lead to the development of a vaginal yeast
infection? a. aspirin b. pain relievers c. decongestants d. antibiotics e. antacids
Advantages of isotype switching include
A) ability to respond to multiple epitopes of the same antigen with the same B cell and rapid response when a pathogen engages in antigen variation. B) rapid response when a pathogen engages in antigen variation. C) ability to respond to multiple epitopes of the same antigen with the same B cell. D) ability to respond to multiple epitopes of the same antigen with the same B cell, expanded antibody response as different isotypes predominate in different areas of the body, and rapid response when a pathogen engages in antigen variation. E) expanded antibody response as different isotypes predominate in different areas of the body.