As oxygen binds to hemoglobin, the ________ of the hemoglobin molecule will change through a process of ________ such that the binding of oxygen is enhanced.
A) amino acid sequence : phosphorylation
B) cooperativity : negativity
C) affinity : positive cooperativity
D) affinity : negative cooperativity
E) cooperativity : positivity
Answer: C) affinity : positive cooperativity
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Among other functions, the ____ of a vascular plant performs most of the photosynthesis that is
conducted by the plant.
a. ground tissue b. protoderm c. vascular tissue d. meristem e. dermal tissue
The situation in which an embryo produced as a result of a mating between individuals of different species is incompatible with the mother and is subsequently aborted is an example of ____
a. temporal isolation b. hybrid inviability c. mechanical isolation d. gametic mortality e. behavioral isolation
A short-lived contraction of the cells in a motor unit is known as a
a. muscle twitch. b. tetanus response. c. spasm. d. contracture. e. treppe.
Gammaproteobacteria of the genus (Escherichia/Pseudomonas/Vibrio) catabolize carbohydrates using pathways other than the standard glycolytic (Embden-Meyerhof) pathway.
Fill in the blank(s) with the appropriate word(s).