A hereditary condition caused by an incorrect amino acid in the amino acid sequence of a protein chain is
What will be an ideal response?
sickle cell anemia
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What is the effect of DNA methylation?
A. It increases transcription. B. It inhibits transcription. C. It increases crossover events. D. It decreases crossover events. E. It promotes post-translational modification of proteins.
What is determined by the variable domain of an antibody?
a. molecular stability b. immunological mechanism of action c. binding specificity d. immunological half-life
Phospholipids are large organic molecules with a ________, polar phosphate head connected to ________, nonpolar fatty acid tails. How do these molecules arrange themselves to form a mostly impermeable barrier between a liposome and its environment?
a. hydrophilic; hydrophobic; They line up hydrophilic head to hydrophilic head with the tails all facing outward from the center line of the membrane. b. hydrophilic; hydrophobic; They line up hydrophobic tails facing each other at the center line of the membrane with the hydrophilic heads facing outward, away from the center line of the membrane. c. hydrophobic; hydrophilic; They line up hydrophobic tails facing each other with the hydrophilic heads facing outward, away from the center line of the membrane. d. hydrophobic; hydrophilic; They line up hydrophilic head to hydrophilic head with the tails all facing outward from the center line of the membrane.
Which of the following is(are) correct regarding Actinoplanete spores? (Check all that apply.)
A. Actinoplanete spores can be motile via flagellation. B. Actinoplanete are often colored and pigmented. C. Actinoplanete form spores without the use of a sporangium. D. Actinoplanete have a rudimentary aerial mycelium.