Temperature has a dramatic effect upon cell membranes. This influence can readily make a cell membrane more solid or more fluid in response to the temperature. This is an example of
A) liquidation.
B) membrane flexibility.
C) phase transition.
D) membrane asymmetry.
E) scanning calorimetry.
C) phase transition.
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Epithelial cell shapes and arrangements include: (check all that apply)
_____ columnar. _____ stratified. _____ symmetric. _____ rod shaped. _____ transitional.
Rhizarians play what important role in the environment?
a. nitrogen fixation in soils b. bioremediation after chemical accidents c. sequestration of carbon in their calcium carbonate shells d. decomposition
Which of the following does NOT occur during the latent period of muscle contraction?
a. Myosin heads bind to actin filaments. b. Myofibrils shorten. c. Muscle cell membrane initiates an electrical impulse which travels into the muscle cell. d. Calcium is released from the sarcoplasmic reticulum. e. all of these
Match the following descriptions (A-C) with the terms in the table. These descriptions may be used more than once or not at all
a. an extracellular matrix component b. a cell adhesion molecule c. part of the cytoskeleton 1. lignin 2. collagen 3. integrin 4. actin 5. microtubule 6. cellulose 7. middle lamella 8. cadherin 9. tubulin 10. keratin 11. pectin 12. intermediate filament 13. microfilament What will be an ideal response?