Mutations in the Gene for Troponin Can Result in the Production

question 22

Multiple Choice

Mutations in the gene for troponin can result in the production of the troponin protein, which has varying affinities for Ca²⁺ ions. Suppose that in a muscle cell a mutant troponin is expressed that has such a high affinity for Ca²⁺ ions that once they bind to troponin they cannot unbind. What will likely happen in this muscle cell?

• A)Myosin heads will not bind to actin after action potentials stop being received.
• B)Myosin heads will bind to actin after action potentials stop being received.
• C)Tropomyosin will not move to expose myosin binding sites.
• D)Cross-bridges will form between myosin and tropomyosin.

Recognize the importance of considering tax implications in investment decisions.

Understand the impact of tax policies on investment returns.

Recognize the investment horizon preferences of various financial institutions.

Identify the typical asset allocation of general pension funds.

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Definitions:

Slopes Fail

Instances where a slope collapses or slides due to gravitational pull and other factors like water saturation or seismic activity.

Rock Slide

A slab of relatively intact rock that detaches from bedrock and slides downhill, shattering as it moves.

Rotational Slide

A slide in which shearing takes place on a well-defined, curved shear surface, concave upward, producing a backward rotation in the displaced mass; synonymous with slump.

Debris Flow

A rapid movement of water-saturated rock, soil, and organic matter down slopes, capable of transporting large items due to its dense nature.