In order for homeostasis to be maintained a(n) ________ must detect a specific stimulus
a. affector
b. sensory receptor
c. gland
d. sensory affector
e. effector
b
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A dysfunctional cell lacks a signal peptidase and is unable to cleave the ER signal sequence from proteins translated in the ER. What will be the effect on the cell's proteins?
A. The cell will have no integral membrane proteins B. All cellular proteins will have an ER signal sequence C. There will be a common signal sequence at the N-terminus of all integral membrane proteins in the plasma membrane D. All cellular proteins will become membrane proteins E. There will be a common signal sequence at the C-terminus of all integral membrane proteins in the nuclear envelope
Myoglobin content is high in ____
a. fast anaerobic fibers only b. slow muscle fibers only c. slow muscle fibers and fast aerobic muscle fibers d. fast aerobic and fast anaerobic muscle fibers e. slow muscle fibers and fast anaerobic fibers
Which of the following represents genes that have the potential to mutate and cause cancer?
a. proto-oncogenes b. transgenes c. oncogenes d. tumor suppressor genes
Which of the following statements about incinerators is FALSE?
A.Incinerators reduce the volume of material that needs to be landfilled. B.Incinerators are expensive to build and operate. C.The burning of waste reduces the toxic and hazardous materials in the waste stream, as the heat neutralizes the toxins. D.Burning solid waste in incinerators can be used to produce energy.