Suppose that you are experimenting with different types of lighting for your indoor green plants. Which of the following colors of light will be most effective?
A) Red and green
B) Red and blue
C) Orange and yellow
D) Black
E) Green
B
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Which of the following treatments would enhance the level of the Pfr form of phytochrome?
A) exposure to far-red light B) exposure to red light C) a long dark period D) inhibition of protein synthesis E) synthesis of phosphorylating enzymes
What is the primary cell type associated with a cell-mediated immune response?
a. B cells b. Macrophages c. Helper T cells d. Mast cells e. Cytotoxic T cells
What makes a mineral element essential for plant growth?
A. It can only be found in organic fertilizers. B. It is part of typical chemical fertilizers. C. As its concentration increases, the plant grows more. D. If it is missing, the plant cannot grow or reproduce normally. E. It contributes to the solute potential of the plant.
In a dihybrid cross that shows complete linkage, which of the following would you expect from a test cross between a cis configuration wild type heterozygote for both genes and a double mutant?
a) Only the wild type phenotypes b) Only the mutant phenotypes c) 1/2 of the offspring will have both of the wild type phenotypes and 1/2 will have both of the mutant phenotypes. d) 9:3:3:1 ratio of phenotypes