The spring-like property that returns muscle to its original length after a contraction ends is
A. extensibility.
B. elasticity.
C. contractility.
D. treppe effect.
E. conductivity.
B
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During osmosis,
a. water moves away from the solution with the higher osmotic pressure. b. water moves into a hypotonic solution. c. the solute moves against its concentration gradient. d. all of the above events would occur. e. none of the above events would occur.
Place the following steps of endomembrane system function in the correct order
1. Golgi apparatus receives transport vesicles from the RER. 2. Ribosomes on the RER synthesize proteins. 3. Proteins are packaged into transport vesicles. 4. Modified proteins may be secreted from the cell by exocytosis. 5. Proteins are modified by the Golgi apparatus. A) 3, 2, 1, 4, 5 B) 2, 3, 1, 5, 4 C) 1, 2, 3, 5, 4 D) 2, 4, 3, 1, 5
Hemoglobin can act as a buffer by accepting protons. When hemoglobin accepts a hydrogen ion it is referred to as
A. oxidized hemoglobin. B. pentameric hemoglobin. C. carbaminohemoglobin. D. reduced hemoglobin.
The future head and buttocks regions of the embryo are facilitated by the process of ________ folding.
A. cleavage B. amitotic C. cephalocaudal D. chorionic E. transverse