Fick's law states that:a
the amount of gas diffusing across a membrane depends on differences in partial pressure.
b. the total pressure of a mixture of gases is the sum of the pressures of the individual gases.
c. the dissociation of oxygen from hemoglobin depends on the pH of the environment.
d. as oxygen concentration increases, there is an increase in the amount of hemoglobin produced.
e. the size of an animal varies inversely to the amount of diffusion across its respiratory membranes.
a
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What is the term for a genetic change in a line of descent over time?
a. speciation b. transformation c. reproduction d. evolution e. mutation
Refer to the accompanying figure. In this sequence of events, the bell is serving as:
a. a motor stimulus. b. the conditioned stimulus. c. a cognition stimulus. d. a sign stimulus. e. the unconditioned stimulus.
Myosin heads bind to _____, which they then pull and cause to slide toward the center of the sarcomere.
A. thin filaments B. Z lines C. sarcomeres D. myofibrils E. thick filaments
Archegonia _____
A) are the sites where male gametes are produced B) may contain sporophyte embryos C) have the same function as sporangia D) make asexual reproductive structures