The voodoo lily (Sauromatum guttatum) is able to
A) utilize metabolic heat.
B) be pollinated by flies.
C) emit a foul odor to attract pollinators.
D) trick the pollinators into thinking it is rotting meat.
E) all of the above
E) all of the above
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The ribonucleoprotein, RNase P, catalyzes the:
A. exonucleolytic removal of the 3' end of tRNA molecules. B. endonucleolytic removal of the 5' end of tRNA molecules. C. ATP-independent removal of tRNA introns. D. degradation of the poly(A) tail.
Stomata are:a
waxy layers that cover leaves. b. openings in the leaf epidermis. c. extensions of bundle sheaths. d. particularly numerous on the upper epidermis. e. guarded by two stipule cells.
Which statement best describes a bursa?
(A) It is composed of hyaline cartilage that provides a smooth surface on which bones articulate. (B) It is a synovial fluid-filled structure lined with synovial membrane on its inner surface. (C) It connects two bones to strengthen and reinforce the articulating bones. (D) it is a structural component of skeletal muscle composed of dense regular collagenous connective tissue
Which of the following is an example of negative feedback?
A) During birthing contractions, oxytocin (a hormone) is released and acts to stimulate further contractions. B) When a baby is nursing, suckling leads to the production of more milk and a subsequent increase in the secretion of prolactin (a hormone that stimulates lactation). C) After a blood vessel is damaged, signals are released by the damaged tissues that activate platelets in the blood. These activated platelets release chemicals that activate more platelets. D) When the level of glucose in the blood increases, the pancreas produces and releases the hormone insulin. Insulin acts to decrease blood glucose. As blood glucose decreases, the rate of production and release of insulin decreases as blood glucose decreases.