Question 1
Approximately 80% of a muscle fiber's volume are the myofibrils. This characteristic reflects muscles ability to ________.
◦ produce movement through contractile force
◦ generate and propagate action potential
◦ produce relatively high amounts of ATP
◦ store oxygen molecules that can be used in aerobic respiration
Question 2
A myosin molecule in the thick filaments can be considered a protein having a quaternary structural level. Which of the following best describes this structural level?
◦ Myosin is a primary component within a myofibril.
◦ Myosin molecules consist of two heavy and to light polypeptide chains.
◦ Myosin has an ATP binding site, actin binding site and flexible hinge region.
◦ Myosin is involved in the power stroke of muscle contraction.
Glycine Molecule
Detection of β-Amyloid Protein
The cycle of G protein dissociation and reassociation
Sequence of nucleotides in a DNA molecule
Model of the CFTR protein