When a myosin head binds to an actin molecule in order to contract a muscle, this is formed: ________
A) myosin filament
B) actin filament
C) cross-bridge
D) troponin
C
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A(n) ________ is a group of sequentially interacting proteins important in innate and adaptive immunity
A) complement B) opsonin C) inflammation D) regeneration
Regular, consistent intervention, such as some modern logging practices, may create which type of stable community?
A) immature B) evergreen C) forest D) recovered E) varied
How is an adaptive defense initially primed?
A) Upon exposure to a foreign antigen B) Complement proteins identify a cell as foreign C) Antibodies bind to surface markers of a foreign cell D) By way of the clonal selection of effector cells
How are viruses classified by the ICTV?
a. By their DNA sequence b. By their number of rRNA c. By their structural components d. By their host range and other characteristics e. By the Linnaean binomial nomenclature system