During a murder investigation in your hometown, the crime scene investigation unit has discovered blowfly maggots developing on the body
As an amateur detective, you arrive on the scene just in time to explain to the investigators how the flies are serving as decomposers and carnivores at the same time. How is this possible?
As the flies feed on the remains of the corpse, they are acting as carnivores because the maggots are eating another animal. At the same time, the flies' activity is breaking down the large biomass of the corpse, helping to return nutrients into the environment. Thus, the flies can be consumers at two levels when feeding on the remains of human bodies or other animals.
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A nonliving source of an infectious agent that infects a large number of people is called a
A) fomite. B) reservoir. C) vector. D) vehicle.
Which of the following terms describes gene regulation that occurs by rendering a protein non-functional?
a. epigenetic level of regulation b. post-transcriptional level of regulation c. translational level of regulation d. post-translational level of regulation
________ was an early human ancestor thought to be among the first tool makers
Fill in the blank(s) with correct word
In multiple sclerosis, a patient:a
loses coordination due to the replacement of myelin with scar tissue. b. accumulates neurofibrillary tangles in the brain resulting in dementia. c. suffers tremors due to overly rapid and spontaneous firing of neural impulses.
d. loses the ability to move because of motor neuron degeneration. e. suffers depression due to abnormal secretion of neurotransmitters