The endocrine system functions in
a. conduction.
b. contraction.
c. hormonal control of the body.
d. protection against disease.
e. cell production
C
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Triploblastic organisms give rise to ___ germ layers, which include _______
A. two; ectoderm and endoderm B. two; endoderm and mesoderm C. three; ectoderm, mesoderm, and endoderm D. three; ectoderm, metoderm, and endoderm
Proteins function in modern cells as
A. structural elements. B. hereditary information. C. catalysts. D. both catalysts and structural elements.
Clays often have charged surfaces. How may this have been important in the formation of organic macromolecules?
A. They are a source of ATP to run chemical reactions. B. They are a source of oxygen to break down organic building blocks. C. They can form templates by binding organic building blocks. D. They form covalent bonds with organic building blocks. E. They are formed from meteorites that carried organic molecules to Earth.
Give examples of how plants and animal pollinators have coevolved. What will be an ideal response?