Adhesion proteins and ____ help guide the growth of the pollen tube in the proper direction towards the egg
a. differentiation upon contact with the flower
b. exposure to moisture
c. cell signaling pathways
d. electromagnetic impulses from the flower
e. insertion of the pollen tube
ANSWER: c
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Which of the following is the normal path of a
normal “cystic fibrosis” protein?
a. endoplasmic reticulum to Golgi body to plasma membrane b. Golgi body to endoplasmic reticulum to plasma membrane c. endoplasmic reticulum to Golgi body to nuclear membrane d. Golgi body to endoplasmic reticulum to nuclear membrane e. endoplasmic reticulum to Golgi body to mitochondrion
How much mercury can the average human safely consume per day?
a. 2 micrograms b. 7 micrograms c. 12 micrograms d. 55 micrograms e. 90 micrograms
Cells very similar to choanoflagellates are
found in: a. Land plants b. Sponges c. Mold d. Bacteria e. None of these
The maintenance of the volume and composition of
body fluids is the primary responsibility of which system? a. integumentary b. immune c. digestive d. urinary e. circulatory