One complete contraction and relaxation cycle in an individual muscle fiber is known as a?
A. Force
B. Twitch
C. Motor Unit
D. Latent Period
E. Summation
Answer: B. Twitch
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In a pedigree chart, a female showing the specific trait being studied is indicated by a ____
a. clear square b. darkened square c. clear circle d. darkened diamond e. darkened circle
Which vertebrate is a fish, has a cartilaginous skeleton, no jaws, and a tooth-covered tongue?
a. shark b. lamprey c. coelacanth d. goldfish e. lungfish
A fluid-filled blister develops when excessive rubbing of the skin causes the ________ and ________ to separate from each other
A) tight junctions; gap junctions B) epidermis; dermis C) dermis; hypodermis D) melanocytes; keratinocytes E) epidermis; hypodermis
Following fertilization of animal eggs, ________ are the second messengers that trigger egg activation
Fill in the blank with correct word.