Organisms, such as forams, move by pseudopodia and feed by phagocytosis. Thess organisms are classified as __________________protozoa.
A. bimodal
B. amoeboid
C. ciliated
D. flagellated
E. apicomplexan
B. amoeboid
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Which property is shared by the processes of replication and transcription?
a. One strand of nucleic acid serves as a template for synthesis of another. b. They require ribsomes. c. They both take place in the cytoplasm of the cell. d. They both make copies of DNA. e. They both use the nucleic acid uracil.
Which of the following is an advantage of
having a four-chambered heart?
a. only oxygen-rich blood flows to tissues b. blood pressure in the separate circuits is not independently controlled c. two separate circuits are possible d. only with a four-chambered heart are lungs possible e. more than one of these is an advantage to having a four-chambered heart
Overgrazing in savannas by domestic animals has contributed to its conversion into:a
chaparral. b. grassland. c. desert. d. taiga. e. ecotones.
Figure on p. 737
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Use the figure above showing the process of gastrulation to answer the following question.
The letter "A" in the accompanying figure represents ____.
A. ectoderm B. endoderm C. mesoderm D. neural plate E. yolk