The facial features seen in the child pictured here are characteristic of what syndrome?
1.Down syndrome
2.Trisomy 13
3.fetal alcohol syndrome
4.Cri du chat
3
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Which component of a negative feedback mechanism does the brain or spinal cord represent?
a. response b. sensor c. integrator d. effector e. stimulus
Which feature is characteristic of all polysaccharides?
a. energy usage
b. always branched chains c. fructose subunits d. only consisting of carbon, hydrogen, and oxygen atoms e. produced by condensation reactions
Acquired immunity allows for immunological memory in which lymphocytes respond to specific antigens during a lifetime. Another name for acquired immunity is
What will be an ideal response?
True or False: Species' extinction rates on an island are dependent on two things: how large the island is, and the location of the island in relation to other land masses
A. true B. false