Water-storing plants and deeply rooted shrubs are plants that characterize ________
A) tropical forests
B) chaparral
C) deserts
D) savanna
C
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Answer the following statements true (T) or false (F)
1. Proteins can have separate domains with distinct structures and function. 2. The primary structure of a protein ultimately determines its three-dimensional structure. 3. All amino acids within a protein are either polar charged or polar uncharged. 4. The four nucleotide bases found in DNA are identical to those in RNA.
The property of water whereby molecules tend to stick to objects is called:
a. cohesion. b. surface tension. c. dissolving ability. d. adhesion. e. viscosity.
One way to kill a tree is to girdle it by cutting a groove a centimeter into the bark all around the trunk of the tree. The tree will typically survive that growing season, but will die over the winter. Why wouldn't girdling work on a large grass?
A. Monocots do not have vascular bundles. B. Eudicots do not have vascular bundles. C. Grasses have taproots. D. The vascular bundles are scattered throughout the ground tissue. E. The vascular bundles are in a ring just under the bark.
What is the primary determinant of how far an agent travels into the respiratory tract?
a. size of the agent b. immune status of the host c. amount of mucus d. depth of breathing e category of organism