Acclimatization is the process by which animals adjust to seasonal changes. Which example is least characteristic of
acclimatization?
a. An endotherm entering torpor
b. A horse’s coat thickening in winter
c. A fish’s metabolic rate slowing
d. A bear entering hibernation
e. A lizard basking in the sun
e
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Some birds follow moving swarms of army ants in the tropics. As the ants march along the forest floor hunting insects and small vertebrates, birds follow and pick off any insects or small vertebrates that fly or jump out of the way of the ants
This situation is an example of what kind of species interaction between the birds and the ants? A) cooperation B) consumption C) commensalism D) parasitism E) mutualism
The chemokine CCL2
A) attracts basophils, eosinophils, monocytes, and dendritic cells. B) stimulates production of inflammatory mediators. C) organizes an antigen specific immune response. D) attracts basophils, eosinophils, monocytes, and dendritic cells; stimulates production of inflammatory mediators; and organizes an antigen specific immune response.
Mendel determined that tall pea plants were dominant to short pea plants. Cross a homozygous short pea plant with a heterozygous tall pea plant. Which of the following is the phenotypic ratio of the offspring?
a. 1:0 b. 1:1 c. 1:2:1 d. 3:1 e. 4:1Text section: LO2Key Concept: autosomal dominant/recessive inheritance Level: Application of concepts
Which statement is NOT generally characteristic of parasites?
a. They are specialists and usually are able to affect only one variety of hosts. b. They inflict serious injury and kill their hosts. c. Some reside inside their hosts, whereas others live outside their hosts. d. Their host may be a plant as well as an animal. e. Plants as well as animals can be parasites.