Which of the following describes the mechanism by which a plant stem grows toward light?
A. The plant seeks light in order to maximize photosynthesis
B. nerve like impulses stimulate contractile cells on the lighted side of the stem
C. cells on the dark side of he stem elongate more than those on the lighted side
D. THe plant grows into an open area where its leaves will not be shaded by competing plants
E. the greater energy supply on the lighted side of the stem stimulates metabolism and growth on that side
Ans: C. cells on the dark side of he stem elongate more than those on the lighted side
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In the next phase of binary fission after the phase shown in this diagram, a temporary structure forms in the space within the FtsZ ring shown here. What is that structure called?
a. plasma membrane
b. cell wall
c. septum
d. origin
Which of the following statements about regulation of thyroid hormones is true?
a) TSH positively feeds back on the hypothalamus causing TRH release b) T3 and T4 negatively feed back on the pituitary to reduce TSH release c) T3 and T4 negatively feed back on the pituitary to reduce TRH release d) TSH negatively feeds back on the hypothalamus to reduce TRH release e) Both b and d are true
For general clinical descriptions, which of the following planes is used as one of the planes to define four quadrants of the abdominal cavity?
(A) subcostal (B) transtubercular (C) midclavicular (D) transumbilical (E) midaxillary
In a restaurant you were served some shredded endosperm for your salad; which of the following was offered to you?
a) shredded lettuce b) shredded coconut c) shredded carrot d) shredded potato e) shredded apple