As a result of plate tectonics, new crust is added to the Earth at ____, and old crust is recycled into the mantle at ____
a. oceanic ridges; oceanic trenches
b. oceanic ridges; continental crusts
c. oceanic trenches; oceanic ridges
d. continental crusts; oceanic trenches
e. oceanic trenches; continental crusts
ANSWER: a
You might also like to view...
Playing catch with your young son, you blithely mention, “Wow, you must have excellent Ruffini endings.” He replies, “No, Mommy! My Ruffinis are beginnings!” Both of you laugh, but you explain that Ruffini endings are very helpful to humans catching balls. How do they help?
a. They detect impact stress, like when a ball hits a hand or glove. b. They detect pain when a ball hits the hand hard enough to hurt. c. They detect skin stretch and deformation in joints, allowing for object gripping. d. They detect deep pressure such as one feels when gripping a ball hard preparing to throw.
Understanding how to inhibit myostatin
production may lead to effective treatment of
a. hemophilia. b. muscular dystrophy. c. firbromyalgia. d. retinoblastoma. e. more than one of these
Which of the following is not a function of a plant stem?
A. storage of starch B. storage of water C. production of pollen D. support E. protection from predators
________ are found on all nucleated cells and can signal viral infection
a. MHC I b. MHC II c. Both MHC I and MHC II d. Antigens