Fruit flies, mollusks, and humans have insulin-like hormones and receptors, even though molecular
studies suggest that their last common ancestor existed more than 800 million years ago.
Indicate whether the statement is true or false.
T
You might also like to view...
The short, branched extensions that receive input from other neurons are the
A. dendrites. B. axons. C. synapses. D. nuclei. E. nodes of Ranvier.
The gametophyte of a fern is
a. haploid. b. photoautotrophic. c. a structure that produces eggs and/or sperm. d. all of the above.
A region of chromatin has recently become DNAse I hypersensitive. Which enzyme has been activated to cause this change in chromatin structure?
A) histone methyltransferase B) histone acetylase C) histone deacetylase D) phosphatase E) kinase
Which of the following describes a lophophore, which is a feature possessed by all members of the phyla Ectoprocta, Brachipoda, and Phoronida?
a. a rounded fold with one or two rows of hollow, ciliated tentacles b. an outpocket of the digestive tract, where metabolic wastes are processed before emptying into the digestive tract for expulsion c. a cluster of pores along the aboral surface, used for expelling wastes from the digestive tract d. an extra body cavity surrounding the digestive tract, filled with muscles used for locomotion