The pancreas secretes digestive enzymes directly into the
What will be an ideal response?
duodenum
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A cluster of birth defects, including abnormal facial characteristics, slow physical growth, and retarded mental development is associated most closely with which of the following?
a) toxoplasmosis b) fetal alcohol effects c) polychlorinated biphenyls (PCBs) d) fetal alcohol syndrome
A new experimental pesticide is being tested by a large agricultural chemical company. An unfortunate side effect in plants treated with this new product is a decrease in NADPH production in the chloroplasts
(Interestingly, reduction of NAD+ to NADH in the mitochondria is unaffected.) Given this observation, which of the following would you expect to observe in the chloroplasts of these plants? A. an increase in 3-phosphoglycerate levels and a decrease in RuBP production B. a decrease in 3-phosphoglycerate levels and an increase in RuBP C. an increase in glyceraldehyde-3- phosphate production D. an increase in 3-phosphoglycerate production and an increase in RuBP
Which of the following is NOT a checkpoint that controls the progression of the cell cycle?
A. Cyclins and cyclin-dependent kinases are proteins that are responsible for advancing a cell through the phases of the cell cycle. B. The G2 checkpoint checks for DNA damage and determines if all of the DNA is replicated. C. The metaphase checkpoint determines if all chromosomes are attached to the spindle apparatus. D. Cytokinesis involves the formation of cleavage furrow to separate the cells. E. The restriction point determines if conditions are favorable for cell division and if the DNA is undamaged.
Cephalization is associated with bilateral symmetry
Indicate whether the statement is true or false.