Which of the following is NOT a function of bile salts?
A. aid the enzyme lipase in the digestion of fat molecules
B. act as emulsifiers
C. production of vitamin D
D. needed for fat digestion
Answer: C
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You grow two trays of Arabidopsis plants under identical conditions, except that one tray of plants is exposed to a gentle breeze for several hours each day
Compared to plants grown in calm conditions what would you expect to see in the wind-exposed plants? I. changes in the expression of many genes II. taller flower stalks III. shorter flower stalks IV. more flexible cell walls V. no changes in 2nd messengers VI. increases in 2nd messengers and/or phosphorylated proteins VII. increased levels of Pfr VIII. stiffer cell walls. A) I, III, VI, VIII B) II, IV, V, VII C) III, IV, VII D) VI, VII, VIII E) wind has no effect on plant development
A recombinant plasmid contains only human and bacterial DNA
Indicate whether the statement is true or false
In which of the following ways could signal transduction most probably be explored in research to treat cancer?
A) removal of serine/threonine phosphate acceptors from transduction pathways in colon pre-cancerous growths B) alteration of protein kinases in cell cycle regulation in order to slow cancer growth C) increase in calcium ion uptake into the cytoplasm in order to modulate the effects of environmental carcinogens D) expansion of the role of transduction inhibitors in the cells before they give rise to cancer E) increase in the concentration of phosphodiesterases in order to produce more AMP
Which of the following statement is not correct in context with the thyroid gland?
A. It secretes two iodine-containing amines. B. Thyroid hormone decreases the metabolic activity of cells throughout the body. C. Low blood concentration of thyroid hormone causes the hypothalamus to secrete thyroid-releasing hormone (TRH). D. Thyroid-releasing hormone causes the anterior pituitary to secrete thyroid-stimulating hormone (TSH). E. TSH stimulates the secretion of thyroid hormone.