You are learning about an integral membrane protein. This protein has a region that is exposed to the extracellular fluid, a region that spans the membrane, and another region that is exposed to the intracellular fluid. Which of the following is likely TRUE of this protein?
A. It is a nonpolar molecule.
B. It is an amphipathic molecule.
C. It is a polar molecule.
Answer: B
Anatomy & Physiology
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Indicate whether the statement is true or false
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Which of the following is NOT an endogenous source of ROS (reactive oxygen species)?
A. Catalase B. NADPH oxidase C. UV light D. Peroxisomes
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The ________ and ________ systems control and coordinate every cell in a human.
A. muscular; nervous B. circulatory; endocrine C. endocrine; nervous D. muscular; skeletal E. circulatory; lymphatic
Anatomy & Physiology
The knuckle joints (between metacarpals and phalanges) are ________ joints.
A. condyloid B. hinge C. saddle D. gliding
Anatomy & Physiology