Channel protein gates respond to all these stimuli except ________
A) chemical messengers
B) physical deformation of the plasma membrane
C) changes in electrical potential (voltage) across the plasma membrane
D) ligands
E) water in the extracellular fluid
E
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Apoptosis and necrosis are described as the two ways cells die. Which one is "messy"? Which is "tidy"? Explain. Why do these forms of cell death exist? What are some advantages and/or disadvantages of each? Use the lining cells of the digestive tract in an example of an advantageous process.
What will be an ideal response?
Which of the following lists examples of body structures from the simplest to the most complex?
A. Protein, stomach, connective tissue, adipocyte (fat cell), mitochondrion B. Mitochondrion, connective tissue, protein, stomach, adipocyte (fat cell) C. Protein, adipocyte (fat cell), stomach, connective tissue, mitochondrion D. Protein, mitochondrion, adipocyte (fat cell), connective tissue, stomach E. Mitochondrion, connective tissue, stomach, protein, adipocyte (fat cell)
Which of the following would take the least time to digest within the gastrointestinal tract?
A) Dipeptide B) Amino acid C) Tripeptide D) Protein
Mesenchyme is found only in the umbilical cord
Indicate whether this statement is true or false.