The axial skeleton can be divided into the skull, the vertebral column, and the __________.
Fill in the blank(s) with the appropriate word(s).
thoracic cage
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A ________ layer consists of diffuse unorganized polysaccharide material that lies outside the cell wall and is easily removed.
Fill in the blank(s) with the appropriate word(s).
Secondary endosymbiosis occurs when a
a. photosynthetic eukaryote engulfs a photosynthetic prokaryote. b. photosynthetic eukaryote engulfs a non-photosynthetic prokaryote. c. photosynthetic eukaryote engulfs a non-photosynthetic eukaryote. d. non-photosynthetic eukaryote engulfs a photosynthetic prokaryote. e. non-photosynthetic eukaryote engulfs a photosynthetic eukaryote.
Leaves of many plants change colors in the fall because
A. the cooler weather causes plants to produce more of the accessory photosynthetic pigments. B. chlorophyll in the leaves degrades with shorter days and cooler temperatures. C. the decrease in daylight hours causes the plant to produce more of the accessory photosynthetic pigments. D. plants produce more chlorophyll. E. All answers are correct.
Sodium chloride broth is selective.
A) True B) False