Which of the following is an enzyme?
a. fibrinogen
b. fibrin
c. plateletase
d. thrombin
e. plasminogen
Answer: d
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The ____ of box turtles in the United States includes all of the individual box turtles that could mate and reproduce within the 50 states
Fill in the blank with the appropriate word.
While neural activity involves transmission of information through electrical events, endocrine activity involves ____
a. transport of hormones to trigger slow, persistent responses b. transport of hormones to trigger fast, transient responses c. release of hormones from exocrine glands for transport outside the body d. changes in neural activity for transport of hormones to target tissues e. transmission of information through chemical reactions
When is an unborn child called a fetus?
A. From the 9th week of pregnancy to birth B. From cleavage to the 9th week of pregnancy C. From cleavage to birth D. From conception through birth
Which of the following is the most effective
contraceptive approach of those listed? a. withdrawal b. diaphragm plus spermicide c. cheap condoms d. douching e. the rhythm method