Evidence suggests that the intention to start eating triggers a decline in blood glucose. Which of the following observations supports this view?
(a) the glucose levels in the extracellular fluids that surround CNS neurons greatly decline just after eating commences
(b) a rapid decline in blood glucose occurs just before eating commences
(c) if an expected meal is not served, blood glucose rarely returns to its previous level
(d) eliminating the premeal drop in blood glucose eliminates the meal
(b) a rapid decline in blood glucose occurs just before eating commences
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What are leaf veins?
a. vascular bundles of leaves b. photosynthetic cells of leaves c. sclerenchyma cells of leaves d. palisade mesophyll of leaves e. spongy mesophyll of leaves
The continuous, low-level extinction rate of species is sometimes called:a
mass extinction. b. minimal extinction. c. selective extinction. d. temporal extinction. e. background extinction.
A 25-year-old woman has just had the Implanon or Nexplanon system inserted for contraception. Six months later, she is concerned because she is not menstruating. This is ________, and the reason is that she has an increased level of ________
A) normal; progesterone B) abnormal; follicle stimulating hormone (FSH) C) normal; estrogen D) abnormal; luteinizing hormone (LH)
Fill in the blanks, selecting from the choices below
Light + _________ + _________ -> _________ + heat + sugars CO, CO2, O2, H2, H2O, N2, NO