What is the first part of the cell that is affected when the pH of extracellular fluid changes?
A) the nucleus
B) the nucleolus
C) the cytosol
D) the plasma membrane
E) the cytoskeleton
D
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The inflammatory agent ____________________ is released from mast cells and basophils
Fill in the blank(s) with correct word
Differentiate graded potentials and action potentials. Select all that apply.
a. Summation of graded potentials can not occur but summation of action potentials are possible. b. Graded potentials are conducted in a decremental fashion and action potentials are conducted with a constant magnitude. c. The magnitude of graded potentials is variable and action potentials are all-or-none.
Kim had her gallbladder removed last month and has been experiencing some changes to her digestion. One thing that is particularly noticeable is that she has noticed
A. she feels more energetic and healthy. B. she has trouble digesting high-carbohydrate foods such as rice and pasta. C. she has trouble digesting high-protein foods such as egg whites. D. her feces have a different color. E. an increase in her appetite.
The affinity of hemoglobin for oxygen is ________ as the partial pressure of oxygen is raised.
A. decreased B. unchanged C. increased