Which MAP protein kinase is the last to be activated in the MAP kinase pathway?
a. Ras
b. Raf
c. ERK
d. Mek
e. tyrosine
c
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The hypothalamic hormone that stimulates hormone secretion by the anterior pituitary gland is _____
A) luteinizing hormone (LH) B) follicle-stimulating hormone (FSH) C) inhibin D) gonadotropin-releasing hormone (GnRH) E) estradiol
Plant success on the terrestrial landscape is linked to the evolution of all of the following except
A. specialized roots. B. stems. C. specialized reproductive features. D. increased area for photosynthesis in the leaves. E. gas-filled air spaces.
Which of the following organs of the human
digestive system does NOT produce any secretions associated with digestion? a. stomach b. liver c. esophagus d. pancreas e. salivary gland
The stomata are located in the leaf's ________, and the chloroplasts are located in the leaf's ________
A) epidermis; epidermis B) epidermis; mesophyll C) mesophyll; mesophyll D) epidermis; stomata E) mesophyll; epidermis