Which pigment(s) is/are characteristic of chlorophytes?
A. Chlorophyll a
B. Phycobilins
C. Chlorophyll b
D. Fucoxanthin
E. Chlorophylls a and b
Answer: E
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What is the greatest risk factor for cancer?
a. family history b. age c. environmental toxins d. diet e. physical inactivity
Najash is an extinct fossil species that has distinct functional pelvis and hindlimbs. Choose the best answer which explains this in evolutionary theory.
A. Najash hindlimbs and pelvis bones represent vestigial structures in that species.
B. Najash was an evolutionary dead end, since no other snake species has anything but vestigial structures.
C. Najash shares homologous features with other vertebrates, such as reptiles.
D. Najash is a transitional species, that has not yet lost its pelvis and hindlimbs.
E. Najash is both a transitional species, and shares homologous structures with other vertebrates, such as reptiles.
A person with this lung disease experiences a loss of elastic tissue, which makes it hard to exhale
A) pneumonia B) emphysema C) tuberculosis D) influenza
A potato stores a reserve of energy in its underground tuber in the form of
A. glycogen. B. starch. C. vitamins. D. protein. E. fat.