Which of the following does not contribute to the increasing levels of methane in the atmosphere?
A. Methane production at sewage treatment plants
B. Methane production in termites
C. Methane production in rice paddies
D. Methane production beneath an aerobic water column
Answer: D
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Which of the following RNA strands is complementary to the DNA sequence 5'–ATCGATCG–3'?
A. 3'–UAGCUAGC–5' B. 5'–UAGCUAGC–3' C. 3'–TAGCTAGC–5' D. 5'–TAGCTAGC–3' E. 3'–AUGCAUGC–5'
Which of the following describes the most important difference between invertebrates and vertebrates?
a) invertebrates contain multiple tissues, while vertebrates do not b) vertebrates contain a backbone, while invertebrates do not c) invertebrates contain a backbone, while vertebrates do not d) vertebrates contain multiple tissues, while invertebrates do not
Which of these is a symptom of vitamin A deficiency?
A) anemia B) severe combined immunodeficiency disease (SCID) C) diabetes D) blindness E) blood doping
A friend of yours is wondering about the differences between the words "orientation" and "navigation" when these two terms are used in descriptions of bird migrations. Since you have studied and know something about animal behavior, what do you tell your friend?
A. Orientation is following a bearing, while navigation is setting or adjusting a bearing. B. Orientation and navigation are used interchangeably when referring to avian migrations. C. Orientation is the ability to find true east, navigation is the ability to find a bearing while crossing water. D. Orientation is adjusting a bearing, while navigation is actually following a bearing. E. Orientation is following the sun in the day as starling do, while navigation is following a bearing with a small amount of magnetite, which is found in the heads of some migratory birds.