If all of the hairlike structures, called ________, in respiratory passages suddenly stopped working, a person would probably have more respiratory infections
Fill in the blank(s) with correct word
cilia
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Scientists believe that a major factor promoting the adaptive radiation of mammals was probably
a. their development of fur b. the mass extinctions of most dinosaurs, an event that opened up new ecological niches c. internal fertilization d. their tetrapods body plans, which gave mammals new capabilities e. the origin and diversification of flowering plants
Which of the following is NOT a function of the vertebrate urinary system?
A) Eliminating cellular wastes B) Regulating body temperature C) Maintaining blood pH D) Adjusting water and ion concentrations E) Secreting hormones
Which is another name for bone cells that remain alive even after the extracellular matrix becomes hardened with calcium phosphate crystals?
A. leukocytes B. fibrocytes C. chrondrocytes D. erythrocytes E. osteocytes
Both base substitution and frameshift mutations can result in the formation of premature stop codons
Indicate whether the statement is true or false