Choose the statement that is TRUE.
a. Fat absorption from lumen to blood occurs completely by diffusion.
b. Peristalsis of the stomach requires coordination of multiple motor neurons from the spinal cord.
c. Histamine inhibits acid secretion by the stomach.
d. Most digestive enzymes are produced by the pancreas.
Answer: d. Most digestive enzymes are produced by the pancreas.
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Answer the following statements true (T) or false (F)
1. The cell is the basic structural/functional unit common to all living organisms. 2. Resolution, contrast, and magnification are three important parameters in microscopy. 3. Fluorescence microscopy enables researchers to label and visualize a particular type of cellular protein or organelle. 4. The flagellum is used for cell motility in eukaryotes only.
What is the key concept addressed by the question?
What will be an ideal response?
Although Lamarck's hypothesis was wrong, it is significant. Why?
What will be an ideal response?
Glial cells function in which of the following roles?
A) All of the listed responses are correct. B) Nourishing neurons C) Insulating axons of neurons D) Regulating extracellular fluid around some neurons E) Transmitting signals