When lungs evolved in vertebrates, the evolution of _____ also occurred in the circulation of blood within those vertebrates.
A. red blood cells
B. a lymphatic system
C. double circulation
D. more plasma
E. a muscular heart
Answer: C
Biology & Microbiology
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What will be an ideal response?
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Which components must be removed during a dehydration synthesis reaction?
A. -H and -OH B. -N= and -OH C. -OH and —COOH D. —COOH and -H
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After the end of an enzyme catalyzed reaction, what must occur for an enzyme to be reused?
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Which kind of root system consists of a large central root and numerous lateral roots?
A) needle-like B) spinous C) taproot D) fibrous
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