The arrows in the diagram below are pointing
to
a. the esophagus and small intestine.
b. the trachea and large intestine.
c. the sphincters at the top and bottom of the
stomach.
d. the esophagus and pancreas.
e. the stomach
C
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The primary difference between simple and facilitated diffusion is that facilitated diffusion requires a membrane protein to act as a channel or carrier for a substance while simple diffusion means substances can slip through the lipid bilayer without a channel or carrier being needed.
a. true b. false
In the food chain grass ? antelope ? human ? lion, the human is a ________
A) tertiary consumer B) secondary consumer C) primary consumer D) producer
The patch of actively dividing cells that is found near the tip of roots and shoots of plants is/are the
A. apical meristem only. B. lateral meristem only. C. apical and lateral meristems. D. tracheid. E. vascular bundle.
Why do commercial food manufacturers hydrogenate foods?
What will be an ideal response?