The (constant/end/variable) regions from the light and heavy chains of an antibody combine to form antigen-binding sites
What will be an ideal response?
variable
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Studying the transcriptional activity of flagellar genes would not likely reveal differential changes when the cells are actively motile compared to nonmotile activity, because a two-component regulatory system is sufficient to control flagellar activity
Indicate whether the statement is true or false.
What is the name of the class of enzymes that will recognize a specific sequence of DNA and cut it?
A. DNA polymerases B. topoisomerases C. restriction endonucleases D. helicases E. primases
Which of the following is the correct order of steps in the EGF–cAMP signaling pathway?
A) ligand binding–G-protein activation– adenylyl cyclase activation–cAMP production–protein kinase A activation B) ligand binding–protein kinase A activation–G-protein activation–adenylyl cyclase activation–cAMP production C) G-protein activation–ligand binding–adenylyl cyclase activation–cAMP production–protein kinase A activation. D) ligand binding–G-protein activation–adenylyl cyclase activation–cAMP production–protein kinase A activation E) ligand binding–adenylyl cyclase activation–G-protein activation–cAMP production–protein kinase A activation
Adult food-borne botulism can be prevented by thoroughly cooking food (minimum 80°C for 20 minutes) before it is eaten.
Answer the following statement true (T) or false (F)