Muscular dystrophy is caused by a mutation in dystrophin, and intracellular protein that binds to the cytoskeleton. Dystrophin also binds to ________, which is found in the plasma membrane of the cell and binds the extracellular matrix.
A. an actin filament
B. a tight junction
C. an integrin
D. a cadherin
E. a gap junction
Answer: C
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Under what environmental conditions would it be MOST advantageous for the photoautotrophic dinoflagellate Peridinium limbatum to reproduce asexually?
A. Increasing concentrations of nitrogen and phosphorus caused by fertilizer runoff B. Fluctuating seasonal water temperatures C. Increasing water acidity levels caused by rising concentrations of atmospheric carbon dioxide D. Decreasing light availability caused by an increase in suspended particles
The main organic product of photosynthesis is
A. glucose. B. carbon dioxide. C. protein. D. triglyceride. E. chlorophyll.
Identify two ways in which posttranscriptional gene regulation occurs in eukaryotes and briefly
explain each. What will be an ideal response?
How can it be determined whether a mutant that constitutively expresses the lac genes has a mutation that inactivates the repressor or a mutation in the operator?
What will be an ideal response?