Many species of ants "farm" aphids, protecting them from predation and collecting concentrated sugars (i.e. honeydew) from them. This type of ant/aphid relationship is known as
A. dispersive mutualism.
B. parasitism.
C. trophic mutualism.
D. commensalism.
E. defensive mutualism.
Answer: E
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Which list correctly describes the sequence of events that occurs during cell division, beginning at interphase?
a. nuclear division, DNA replication, cytoplasmic division b. DNA replication, cytoplasmic division, nuclear division c. cytoplasmic division, nuclear division, DNA replication d. nuclear division, cytoplasmic division, DNA replication e. DNA replication, nuclear division, cytoplasmic division
What are mycelia?
a. a network of microscopic interwoven filaments b. a strand of walled cells arranged end to end c. composite organisms consisting of a fungus and a single-celled photosynthetic species d. aquatic fungi that produce flagellated spores e. mutually beneficial relationships between fungi and plant roots
It has been observed that people with relatively high stress levels get a relatively high number of colds. What would this be an example of?
A) correlation B) experiment C) variable D) hypothesis
Which of the following is not associated with a bacterial ribosome?
A. Its small subunit provides the enzymes for making peptide bonds. B. It is a 70s holoenzyme. C. It has a peptide (P) site. D. It has an exit site. E. It has an amino acid (A) site.