Which of the following is a reversible post-translational covalent modification?
A. phosphorylation
B. acetylation
C. disulfide bond formation
D. phosphorylation and acetylation
E. acetylation and disulfide bond formation
D. phosphorylation and acetylation
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In a prokaryotic cell,
a. transcription and translation occur simultaneously. b. transcription occurs in the nucleus while translation takes place in the cytoplasm. c. translation occurs before transcription. d. transcription and translation are separated in time and place. e. transcription and translation are considerably slower than in eukaryotic cells.
In this step in the identification of the colony
that contains a targeted gene, a. bacterial cells are cloned. b. bacterial colonies are transferred. c. bacterial cells are ruptured. d. DNA is lysed. e. cells with the targeted gene are identified.
All cells are fundamentally similar at a structural level. Using the accompanying diagram of a generalized human cell,
name as many of the numbered labels as you can to illustrate this idea. What will be an ideal response?
ATP synthase plays a role in ________
A) pulling electrons down the electron transport chain B) glycolysis C) pumping hydrogen ions across the inner mitochondrial membrane D) generating ATP