Which systems help to adjust the blood's acid-base balance?

A. muscular and skeletal
B. respiratory and skeletal
C. respiratory and urinary
D. cardiovascular and muscular
E. cardiovascular and urinary


Answer: C

Biology & Microbiology

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True or false: All 64 possible triplet sequences in an mRNA are recognized by a nucleic acid molecule

A. true B. false

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The fact that DNA replication occurs in virtually the same way in all organisms reflects:

A. its evolution early in the history of life. B. its multiple origins in different lineages of organisms. C. the laws of thermodynamics. D. the fact that mutations are generally harmful. E. the universal genetic code.

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Which of the following lack a nucleus and are

structurally simple? a. eukaryotes b. prokaryotes c. fungi d. algae e. all of these

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The lymphatic system plays a role in defending the body against pathogens and maintaining a state of homeostasis.

Answer the following statement true (T) or false (F)

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