Which muscles may contract during inspiration?
a. external intercostals.
b. internal intercostals.
c. abdominal.
d. both b and c.
d
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Hemostasis in vertebrates includes all EXCEPT
which of the following? a. blood clot formation b. activation of factor X c. release of iron to aid in the clumping of platelets d. vascular spasms e. platelets releasing substances that cause them to attract each other
Some invertebrates do not have special respiratory
organs and rely on __________ exchange, diffusion of gases across the body surface. Fill in the blank(s) with the appropriate word(s).
Multiple independent experiments have demonstrated that phytochrome helps trigger seasonal change responses in the plant such as changing color and loosening of leaves. Plants have the ability adapt to seasonal changes in their surroundings. This statement is an example of:
A. a hypothesis B. an experiment C. inductive reasoning D. a theory E. deductive reasoning
A positive complement-fixation test is indicated by the lysis of the sheep red blood cells added in the indicator phase of the test
Indicate whether the statement is true or false