Using Figure 20.1, match the following:
1) Heavy chain.
2) Light chain.
3) Variable region.
4) Constant region.
5) Antigen-binding site.
1) B
2) D
3) C
4) E
5) A
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Communication that the homeostatic variable has deviated outside normal limits
a. afferent signal b. efferent signal c. A & B
Branches that sometimes occur along the length of an axon are called
A) action potentials. B) synaptic knobs. C) collaterals. D) hillocks. E) synapse.
In active immunity, a person becomes immune to a pathogen as a result of having a disease.
Answer the following statement true (T) or false (F)
Amniotic fluid
A. provides nutrients to the fetus from the maternal part of the placenta. B. protects the embryo against being jarred by movements. C. absorbs wastes the fetus excretes. D. stores nutrients for the fetus.