Answer the following statements true (T) or false (F)
1. Two species that occupy identical realized niches will not be able to co-exist for an extended period of time.
2. Chemical defenses are found only among animals.
3. The mimicry of coral snakes by scarlet king snakes is an example of Batesian mimicry.
4. Fleas are endoparasites.
1. TRUE
2. FALSE
3. TRUE
4. FALSE
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In the experiments with moss patches described in your text, what were the two factors that affected insect extinction rates within patches?
What will be an ideal response?
Which one of the following sequences is most likely to form a hairpin with a 5 nucleotide loop?
A. TTTTAGACTGAAATAGTCTTTTT B. TACGAAATACGGGATTTA C. AAAAAAAATTTTTTT D. CCCGGGAAAAAAAAACCCGGG E. ACATACAGACCCAATTGACATAG
Associations of fungi and plant roots are called
A. root forks. B. mycorrhizae. C. lichens. D. gnetophytes. E. rhizoids.
Which of the following statements are TRUE about the structure of hemoglobin? (Select all that apply.)
a. The hemoglobin molecule is a protein made up of four subunits bound together. b. Each of the four heme groups in a hemoglobin molecule contains one atom of iron (Fe2+), to which molecular oxygen binds. c. 2,3 diphosphoglycerate increases hemoglobin's affinity for oxygen. d. The relationship between the percentage of saturation of hemoglobin and PO2 is linear.