A Ca2+-binding protein that activates many enzymes, including myosin light-chain kinase, is
A) Ca2+-ATPase.
B) gelsolin.
C) calmodulin.
D) myosin light-chain phosphatase.
E) TnC.
Answer: C
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Which trait is characteristic of a K-selected species?
a. adapted to rapidly changing environments b. small body size c. short generation time d. provide substantial parental care to offspring e. single reproductive event
Some of the stages of meiosis are listed under letters a
through e below. For statements 62–68, select the best choice of these stages. a. prophase I b. metaphase II c. anaphase I d. anaphase II e. telophase I E 62. Pairing of homologues occurs during this stage. E 63. Recombination via crossing over occurs during this stage. D 64. By the end of this phase the number of homologous chromosomes is reduced in half. M 65. During this stage the sister chromatids begin to separate. D 66. Following this phase each individual cell is haploid. D 67. During this phase homologues separate. D 68. New genetic combinations upon which natural selection can act are present after this stage.
What is the term for the sudden and involuntary contraction of a muscle?
a. spasm b. twitch c. tetanus d. treppe e. paralysis
According to the positive-incentive perspective, the degree of hunger you feel at any particular time depends on the interactions of all of the factors that influence the positive-incentive value, such as:
What will be an ideal response?