What are the monomers of proteins?
A) Glucose
B) Nucleic acids
C) Fatty acids
D) Amino acids
D
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Nervous tissue contains which two types of cells?
A. muscle fibers B. adipocytes C. fibroblasts D. neurons E. neuroglia
These structures are held together by cohesin:
A. Homologous chromosomes B. Solenoids C. Sister chromatids D. Nucleosomes
In an unstimulated neuron, the ________ concentration is higher inside the cell than outside
A) K+ B) Ca2+ C) Li+ D) Cl? E) Na+
Which of the following statements about the indirect value of trees is not true?
A. They provide shade and reduce the need for fans and air conditioning. B. In forests, they exert a natural "sponge effect" for the provision of freshwater. C. They break down dead organic matter and other types of wastes. D. Globally, they stabilize the climate because they take up carbon dioxide. E. They retain soil and prevent soil erosion.