Recall the classic experiments assessing arthropod extinction rates in moss (Figure 46.14). If corridors are eliminated between moss patches, how does this change affect the arthropods inhabiting the moss?
A. Arthropod extinction rates remain the
same.
B. Arthropod extinction rates decrease.
C. Arthropod extinction rates increase.
C
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What molecules are released by activated helper T cells?
A. antigens B. immunoglobulins C. cytokines D. antibodies
This molecule of starch is different from a glucose molecule in that this molecule
A. is used by cells for long-term storage and release of energy for cell functions.
B. is a complex carbohydrate polymer.
C. has the same characteristics of glucose.
D. is used by cells for quick release of energy for cell functions.
E. can provide structure for cells that contain it.
Which elevational gradient has the most species?
A) 1920-2140 m B) 1680-1920 m C) 1370-1680 m D) cannot tell from figure
The genotype FF is known as __________________
A. Homozygous dominant B. Homozygous recessive (ff) C. Heterozygous (Ff)