The ________ is a modified form of endoplasmic reticulum that stores and releases calcium ions when a muscle contracts
Fill in the blank(s) with correct word
sarcoplasmic reticulum
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Kinesis is
A. a movement toward a stimulus. B. a movement away from a stimulus. C. any movement in response to a stimulus, but not necessarily toward or away. D. a movement. E. any movement away from an object.
Why do researchers often include DNase in their antibiotic preparations to eliminate biofilms?
A. The antibiotics cannot readily penetrate the extracellular debris, which often includes DNA from lysed cells. B. Targeting the bacterial chromosome is the most effective way to kill biofilm bacteria. C. If the microbe's genome can be destroyed, the cell will die. D. The antibiotics target the cell wall and the DNase targets the genome, effectively destroying the biofilm.
Every polypeptide chain synthesized from RNA starts with which amino acid?
What will be an ideal response?
Who discovered penicillin?
A. Fleming B. Ehrlich C. Kitasato D. Pasteur E. Domagk