What functions as the supportive component of the skeleton in an animal with a hydrostatic skeleton?
A. a fluid-filled body cavity
B. the circular muscles
C. the longitudinal muscles
D. the circular and longitudinal muscles
E. the body wall
A
Biology & Microbiology
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Which of the following are the “building blocks” of proteins?
A) amino acids B) monosaccharides C) nucleotides D) peptides
Biology & Microbiology
The osmoregulatory and ionoregulatory problems facing a saltwater fish are
A. loss of water and loss of ions. B. loss of water and gain of ions. C. gain of water and loss of ions. D. gain of water and gain of ions. E. buildup of urea in tissues.
Biology & Microbiology
Active transport can only move a substance with a concentration gradient
1.True 2.False
Biology & Microbiology
The somatic senses include all EXCEPT which one
of the following sensations? a. balance b. pain near the body surface c. temperature d. touch e. pressure
Biology & Microbiology