Which type of animal would you dissect to locate a nephridium?
A) Reptile B) Bird C) Insect D) Earthworm E) Flatworm
D
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At equilibrium the allele and genotype frequencies of a population change over time
Indicate whether the statement is true or false
Which statement is true?
1.Both the parasympathetic and sympathetic nervous systems send nerves to all organs. 2.The sympathetic nervous system that supplies an organ will also provide parasympathetic nerves to it. 3.The sympathetic branch can have either excitatory or inhibitory effects depending on effects from the environment. 4.The sympathetic branch of the autonomic system usually speeds up the activities of the body. 5.The parasympathetic system usually speeds up the activities of the body.
A mutation that changes a normal codon to a stop codon is called a
A. back mutation. B. point mutation. C. silent mutation. D. missense mutation. E. nonsense mutation.
When there is a change in the internal body environment, how will the body react to maintain homeostasis by negative feedback?