If an adult human suffered a traumatic injury, could their notochord be damaged?
A. No; the notochord is encased in bone and it not susceptible to damage.
B. Yes; because the notochord is deep within the body only a severe injury could damage it.
C. Yes; damage to the notochord often results in paralysis.
D. No; adult humans do not have a notochord.
Answer: D
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Actual gas exchange occurs through the walls of the ____
a. arteries b. arterioles c. capillaries d. veins e. venules
The two sources of energy that are stored in muscle tissue are triglycerides and _____________.
Fill in the blank(s) with the appropriate word(s)
Earthworms possess both male and female organs on separate segments. Mating could be described as "parallel parking" in opposite directions, and cross-fertilizing. Given this information, which of the following is (are) true?
A. Maintaining any system not clearly male or female is disadvantageous; the earthworm is trapped in an evolutionary dead end. B. This is primarily to allow them to self-fertilize if no other worm is in their sector of the soil. C. This is evidence of a primitive state that is generally less efficient than separate sexes. D. This is an advantage since they can mate with any other earthworm of the same species that they encounter.
Hershey and Chase concluded that ________ is the hereditary molecule by examining how radioactively labeled molecules moved between a virus and bacteria
A) Lipids B) DNA C) protein D) phospholipids