Which is the best definition of the term ligand?
A. Any molecule found in the intracellular fluid
B. A molecule or ion that binds to a protein
C. Any molecule found in the extracellular fluid
D. A receptor composed of protein
E. A carbohydrate molecule that binds weakly to membrane phospholipids
Answer: B
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Testosterone is produced by the ____________________.
Fill in the blank(s) with the appropriate word(s).
Which labeled bone in the diagram of the foot is the largest and strongest tarsal bone?
a) A b) B c) C d) D e) E
Radiation and conduction are two types of heat exchange between the body and environment. The magnitude of heat loss via these two processes is determined by the
a. amount of sweating b. temperature difference between body surface and its surroundings c. absolute core temperature d. extent of evaporation from the body surface e. distance between the two objects that are exchanging heat
What are the two primary curvatures present in the vertebral column of a fetus?
A) thoracic and lumbar B) cervical and sacral C) thoracic and sacral D) cervical and thoracic