Which of the following is part of the initial response to cold temperature?
A. Vasodilation of peripheral blood vessels
B. Panting
C. Sweating
D. Shunting of the blood to the core regions of the body
E. Decreased metabolism
Answer: D
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If motility is considered a characteristic of animals, then why are stationary creatures such as sponges still considered to be animals?
What will be an ideal response?
Which of the following statements is true?
a. The hydrogen bonding of cytosine to guanine is an example of complementary base pairing. b. In DNA, adenine always base pairs with guanine, and cytosine always base pairs with thymine. c. Each of the four nucleotides in a DNA molecule has the same nitrogen-containing base. d. When adenine base pairs with thymine, they are linked by three hydrogen bonds. e. None of these statements are true
Who first described cells?
A. Linnaeus B. Golgi C. Darwin D. Leeuwenhoek E. Hooke
A primitive groove is the equivalent of a:
a. neural crest. b. branchial groove. c. blastodisc. d. blastopore. e. neural groove.