Which best describes how a bone fracture is repaired?
When a bone breaks, bleeding occurs and a clot forms.
Fibroblasts invade the clot and secrete collagen fibers to form a callus, linking the two parts of the bone.
Osteoblasts transform cartilage into bone.
All of these are steps of bone fracture repair.
D. All of these are steps of bone fracture repair.
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The portion of the sarcomere indicated by the red box in the photo shows which of the following?
A. overlapping actin and myosin filaments B. a portion of the myosin filaments without any overlapping actin filaments C. a portion of the actin filaments without any overlapping myosin filaments D. the Z disc E. titin filaments
A cell that has lost its capacity to grow in vitro as a monolayer is now
A) benign. B) malignant. C) transformed. D) anchorage independent. E) free ranging.
The procedure in which a patient’s blood is sent into a filter to be cleaned and then returned to the body is ____
a. peritoneal dialysis b. hemodialysis c. uro-dialysis d. lithotripsy dialysis e. hydro-dialysis
Wolbachia can have ALL of the following effects on their insect hosts EXCEPT
a. the killing of males. b. parthenogenesis. c. the sterilization of females. d. feminization.