T cells
A. are activated by an antigen-presenting cell.
B. release cytokines.
C. may stimulate B cells.
D. All apply.
Answer: D
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Which of the following lists describes three of the main functions served by proteins?
A. Waterproofing, energy storage, and transmission of the genetic code ?B. Cushioning of organs, thermal insulation, and establishing cell boundaries ?C. Catalysis of chemical reactions, body defenses, and movement ?D. Energy storage, body defenses, thermal insulation
What is the major function of the hormone produced by the cells marked in the thyroid follicle shown in the histology picture?
a) Involved in regulation of calcium homeostasis. b) Enhances contraction of smooth muscle cells in the uterus during delivery. c) In females, initiates development of oocytes. In males, stimulates sperm production. d) Decreases urine volume. e) Increases blood levels of Na+ and water.
The posterior ridge on the shaft of the femur that serves as an attachment for numerous muscles is the ________.
Fill in the blank(s) with the appropriate word(s).
What is the role of ATP in the cell?
What will be an ideal response?