Which volume is not included in vital capacity?
a. tidal volume
b. residual volume
c. inspiratory reserve volume
d. expiratory reserve volume
b. residual volume
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If the inside of a cell has a net negative charge, a negative ion outside the membrane is more likely to be attracted to the intracellular environment.
Answer the following statement true (T) or false (F)
Which of the following are common means by which binding of an extracellular chemical messenger with a cell's receptor brings about a desired intracellular response?
a. opening or closing of specific channels to regulate ionic movement across the plasma membrane. b. activation of an intracellular second messenger system. c. alteration of protein shape and function as a result of phosphorylation. d. only (a) and (b) above. e. all of these answers.
Skeletal muscles are capable of limited repair after injury
Indicate whether the statement is true or false
"Chondrichthyes" means "cartilaginous fishes." Biologists used to assume that bone was not evolved until the Osteichthyes, or bony fishes
What clues do we have that shark ancestors, at some level, had bone? How can we infer this from (a) evidence from the fossil record and (b) evidence from comparative anatomy?