An ant that consumes the "honeydew" from an aphid's anus benefits by obtaining a source of carbon
a. True
b. False
ANSWER: True
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Carbon dioxide in the atmosphere absorbs heat energy and emits it in all directions, making it a ____
Fill in the blank with the appropriate word.
A lichen is an example of:
A. a pathogen B. a parasite C. an archaean D. a methanogen E. a mutualistic relationship
All of the following are true about plasmids EXCEPT:
a. Plasmids are small portions of circular DNA found in bacteria. b. Plasmids often encode for genes that carry toxins or antibiotic resistance. c. Plasmids can be transferred from one bacterium to another. d. Plasmids contain DNA and are found in the nucleoid region of bacteria
Which of the following cells is a component of the body's first line defense?
A) monocyte B) goblet cell C) NK cell D) neutrophil E) microglial cells