Are all chemical reactions reversible? If not, why aren't they all reversible?
What will be an ideal response
All chemical reactions are theoretically reversible, but only if the products are not consumed and enough energy is available for the reaction.
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In what way are lymphatic vessels similar to veins?
A. They empty into lymph nodes. B. They are small, encapsulated bodies. C. They include valves to direct flow. D. They carry blood to the heart.
FSH is
a. an anterior pituitary hormone that stimulates antrum formation in developing ovarian follicles. b. is secreted at the same rate throughout the ovarian cycle c. is not important in male reproductive physiology d. both (a) and (b) e. none of the above
How is backflow of blood from the right ventricle into the right atrium prevented?
What will be an ideal response?
Cells that are thick in the middle and tapered toward the end are called ________ cells.
A. spheroid B. fusiform C. columnar D. squamous E. stellate