The fact that a single defective protein causes cystic fibrosis, a multisystemic illness, proves that
A) all organisms are composed of cells.
B) all levels of organization within an organism are interdependent.
C) chemical molecules make up cells.
D) all cells are independent of each other.
E) congenital defects can be life threatening.
B) all levels of organization within an organism are interdependent.
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Disease-causing agents such as viruses and bacteria are called ________.
Fill in the blank(s) with the appropriate word(s).
The muscle that originates along the entire length of the linea aspera of the femur is the
A) sartorius. B) vastus medialis. C) iliacus. D) rectus femoris. E) biceps femoris.
Excitatory interneurons are involved in which of the following spinal reflexes?
A) Golgi tendon reflex B) knee jerk reflex C) stretch reflex D) withdrawal reflex
Ablation of the ________ in the midbrain would impair the ability to respond to sounds.
A. inferior colliculi B. substantia nigra C. red nucleus D. medial colliculi