In comparing simple diffusion to facilitated diffusion, you note that ________
A) both require ATP
B) both require a specific carrier or protein channel
C) both can move substances up, as well as down, a concentration gradient
D) both require a concentration gradient
Answer: D
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Heme released from hemoglobin in aged red blood cells is decomposed in the liver into
A) iron and the bile pigment biliverdin, which is eventually converted to bilirubin. B) serum and plasma proteins. C) iron and interleukins. D) iron and the bile pigment bilirubin, which is eventually converted to biliverdin.
An increase in the circulating number of ____ is associated with parasite infestations
a. neutrophils b. eosinophils c. basophils d. lymphocytes e. monocytes
Which of the following is represented by "A"?
A. Parietal bone B. Frontal bone C. Sphenoid bone D. Temporal bone E. Occipital bone
What is the correct order of structures as you move from outside a muscle cell, to deep inside it?
A) fiber, myofibril, myofilament B) myofilament, fiber, myofibril C) myofibril, myofilament, fiber D) myofilament, myofibril, fiber