List, in order, the levels of control of gene expression in eukaryotic cells.
What will be an ideal response?
Answers should include, in the following order:
1. Chromatin structure
2. Transcriptional control
3. Posttranscriptional control
4. Translational control
5. Posttranslational control
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Which portion of the photosynthetic apparatus is involved in the oxidation or splitting of water?
A. reaction center B. antenna complex C. P680 chlorophyll D. manganese cluster E. light-harvesting complex
Symptoms of influenza include
A. fever and pneumonia. B. fever, sore throat, rash, and cough. C. fever, diarrhea, and vomiting. D. fever, myalgia, sore throat, cough, and nasal discharge. E. nasal discharge, mild fever, and absence of cough.
The fact that eggs have the ability to recognize surface proteins on sperm of their own species
illustrates
a. behavioral isolation. b. gametic isolation. c. hybrid breakdown. d. hybrid inviability. e. hybrid sterility.
Most often, the largest gradient in water potential is between
A. xylem and phloem. B. leaf cells and the intracellular spaces inside the leaves. C. the relative humidity inside the leaf and the relative humidity outside the plant. D. roots and soil water. E. root xylem and shoot xylem.