Which of the following are adhesins?
A. Endotoxins
B. Pili
C. Siderophores
D. Cilia
E. Flagella
Answer: B. Pili
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Peter Sheldon found that the number of “ribs” in which of the following groups changed over a 3
million year period with no evidence of speciation?
a. horses d. humans b. trilobites e. octoprocts c. insects
Describe how the discovery of the structure of DNA is an example of the fact that science is a process that always builds on previous work. Text Section LO2 Key Concept: Watson and Crick, process of science, DNA structure Level: Application of concepts (maybe some advanced critical thinking)
What will be an ideal response?
A soil that is 10% silt, 80% sand, and 10% clay would be considered
A) clay loam. B) sandy clay. C) slit loam. D) loamy sand.
Which of the following is an example of Scala Naturae?
a. Darwin's ladder-like understand of nature from the most complex to simplest b. Darwin's ladder-like understand of nature from simplest to the most complex c. Aristotle's ladder-like understand of nature from the most complex to simplest d. Aristotle's ladder-like understand of nature from simplest to the most complex