Protists are classified into a single kingdom because of which of the following features?
A. They are unicellular.
B. They are monophyletic.
C. They are microscopic.
D. All types of nutritional modes are found.
E. They are eukaryotes, but not fungi, plants, or animals.
Answer: E
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Prokaryotes are the ancestors of
a. protists. b. fungi. c. plants. d. animals. e. all of these.
Draw a duplicated chromosome. Now, label each part of the chromosome with both its function and its
identity. What will be an ideal response?
Which of the following creates the least amount of soil erosion?
A) deforestation B) poor landscaping practices that expose the land to excess wind C) overgrazing by livestock D) use of drip irrigation systems E) wetland destruction
Most of the oxygen in the body is transported _______.
a) by peristalsis b) as chyme c) bound to the protein hemoglobin d) as bicarbonate ions