Which of the following is NOT true about
action potentials?
a. they cannot move backwards
b. they are an example of negative feedback
c. they are generated and completed in a
matter of milliseconds
d. they are only generated if the threshold
potential is reached
e. they are all the same size
B
You might also like to view...
A mutant Drosophila is created that has double the number of bicoid genes, each of which is fully expressed. What is the most likely difference expected in this mutant compared to wild type Drosophila embryos?
A. Hunchback levels would be lower in the anterior portion of the embryo. B. Caudal levels would be higher at the anterior portion of the embryo. C. Less of the embryo would have posterior structures. D. The Bicoid concentration gradient would be less at the anterior portion of the embryo.
________ is directly produced from the transcription of a eukaryotic gene.
A. rRNA B. pre-mRNA C. mRNA D. DNA E. Protein
Uses of chlorofluorocarbons include all of the following EXCEPT for ____
a. gasoline additives b. air conditioner coolants c. refrigeration coolants d. plastic packaging e. solvents
When drinking water at a party you sneeze and water comes out of your nose. Why did this happen?
a. The epiglottis did not close. b. The glottis did not close. c. The pharynx and nasal cavity were connected. d. The tongue blocked the pharynx. e. The water was carbonated.