Endorphins
a. are natural painkillers.
b. are released during orgasm
c. influence the effects of neurotransmitters
d. are released during exercise or laughter.
e. include all of these descriptions.
Answer: e
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Match the following items with the correct phrases.
_______1. A ____________________ is a membrane-bound vesicle containing only an ingested object. _______2. The directed migration of leukocytes is known as ____________________. _______3. A ____________________ is a membrane-bound vesicle containing an ingested object and digestive enzymes. _______4. ____________________ is an increase in the diameter of blood vessels. _______5. ____________________ is a process by which phagocytosis is facilitated by the deposition of antibodies or complement fragments onto the surface of particles or cells. A. chemotaxis B. opsonization C. phagolysosome D. phagosome E. vasodilation
The three stress hormones are _____
a. cortisol, FSH, and LH b. epinephrine, cortisol, and FSH c. norepinephrine, cortisol, and FSH d. epinephrine, norepinephrine, and cortisol e. epinephrine, norepinephrine, and FSH
In a pedigree chart, a female who does not
demonstrate the trait being studied is represented by a a. darkened square. b. clear diamond. c. clear circle. d. darkened triangle. e. darkened oval.
Marsupials are a very ancestral form of mammal, evolving before placental mammals over 70 million years ago. Today Australian marsupials can be compared to placental mammals on other continents.
When you compare Australian marsupials to placental mammals today
A. the marsupial fossils look remarkably similar to the placental mammals of today. B. the marsupials are all very primitive, having changed very little during the last 70 million years. C. the marsupials are very similar to placental mammals in the ways they have adapted to similar ecological niches. D. living marsupials are little changed from the earliest marsupial fossil forms. E. the marsupials have evolved much more rapidly than placental mammals and are more highly adapted.