Human body cells are approximately ________ water
A) 95–99%
B) 25–35%
C) 50–55%
D) 70–95%
D
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The general order of classification below the domain or kingdom level is
A. phyla, class, family, order, genus, species. B. phyla, order, class, family, genus, species. C. phyla, order, family, class, genus, species. D. phyla, class, order, family, genus, species.
During which period did club mosses dominate the landscape?
a. The Permian b. The Devonian c. The Carboniferous d. The Silurian
Which of the following statements incorrectly describes common structural features of an animal secretory cell and a photosynthetic plant cell?
a. Both cells have Golgi apparatus. d. Both cells have a plasma membrane. b. Both cells have mitochondria. e. Both cells have a nucleus. c. Both cells have chloroplasts.
Which of the following is a primary difference between ectomycorrhizae and endomycorrhizae?
A) Endomycorrhizae have thicker, shorter hyphae than ectomycorrhizae. B) Ectomycorrhizae do not penetrate root cells, whereas endomycorrhizae grow into invaginations of the root cell membranes. C) Endomycorrhizae are more common than ectomycorrhizae. D) There are no significant differences between ectomycorrhizae and endomycorrhizae.