In terms of changes in membrane potential, compare and contrast action potentials and graded potentials
What will be an ideal response?
ANSWER: Action potentials are all-or-none phenomena that form when a membrane potential of an
excitable cell reaches threshold potential. Graded potentials are additive subthreshold
changes in the membrane potential of an excitable cell. The net effect of graded potentials
may cause a membrane potential to move closer to, or further away from, threshold
potential.
You might also like to view...
Which is the correct order of cytoskeletal filaments in decreasing filament diameter?
A. microfilaments > microtubules > intermediate filaments B. microtubules > intermediate filaments > microfilaments C. microtubules > microfilaments > intermediate filaments D. intermediate filaments > microfilaments > microtubules
Ultimate source of all cells that contribute to growth in length of stem or root.
Choose the letter of the best match: A. protoderm B. vascular cambium C. apical meristem D. procambium E. ground meristem
What happens during the process of gene flow in a population?
a. DNA of organisms in a population is randomly changed through mutation b. the allele frequencies vary between generations due to migration c. allele frequency slowly shifts towards the dominant alleles in the population d. allele frequencies randomly change from random mating through the generations
Which of the following is FALSE regarding
morphogens? a. They are long-range signals in pattern formation. b. They are encoded by master genes. c. They affect gene expression. d. Their concentration increases with distance from source. e. All of these are true