Which of the following is associated with the H+ proton?    a. Acts as a buffer against changes to muscle pH   b. Accumulation impairs calcium handling by the sarcoplasmic reticulum (SR)   c. Necessary molecule for the re-synthesis of ATP within the mitochondria   d. All of the above   e. Both B and C are correct

Q: Under what conditions will lactic acid accumulate in skeletal muscle? A. when citric acid enzymes…

A: Lactic acid is the end product of anaerobic Glycolysis where Glucose is oxidised to lactic acid.

Q: Which of the following if true of kinesin? Select one: a. It is protein involved in transport via…

A: Cytoskeleton in a cell can be defined as a the intracellular network of proteins filaments,which are…

Q: Determine whether the following statement regarding the mechanism of the SERCA pump is TRUE (T) or…

A: SERCA, or SR Ca2+-ATPase, is a calcium ATPase-type P-ATPase. Its significant function is to ship…

Q: Contraction of sarcomeres is dependent upon the motor protein attached to and moving along

A: The germ layer, mesoderm, is the source of soft tissue called muscles. Connective tissue is…

Q: all that apply. Which of the following proteins make(s) up an elastic filament? e. Troponin.…

A: The visceral, cardiac, and skeletal muscles are the other two categories of muscles found in the…

Q: A point mutation in Hb diminishes hydrophobicity at the heme. Which of the following impacts would…

A: Hb hemoglobin carries O2 in the blood during the gaseous exchange.

Q: Movement of sarcomeres is dependent upon the motor protein, to and moving along Select one: a.…

A: Introduction  The basic unit of contractility in a myocyte is called a sarcomere. Thick myosin…

Q: The large muscle protein that essentially "anchors" the thin-filaments to the cell membrane and…

A: The myofibrils are built from three kinds of proteins : Contractile proteins : They generate force…

Q: Which of the following is a component of the neuromuscular junction? a. axon terminal of a somatic…

A: The muscles contract and relax to enable various movements. The contraction and the relaxation of…

Q: Name the primary sources of ATP for: a. Immediate energy for a few seconds b. Energy extending to…

A: Cellular respiration is a collection of three metabolic pathways that generate ATP: the energy…

Q: Which of the following if true of kinesin? Select one: a. It is a sugar that can bind to…

A: kinesin is a ATP dependent motor protein. it moves along with microtubules in forward direction.

Q: Actin and myosin are long-filament proteins used in the contraction of muscles. They are examples of…

A: Proteins are polypeptide molecules that are made up of amino acids. Amino acids are organic…

Q: An athlete participates in aerobic exercise three times a week. One of the changes is an increased…

A: During aerobic exercise, the rate of breathing is faster and deeper than when the heart rate is at…

Q: When ATP levels return to normal after intense muscle activity, is creatine predominantly…

A: During intense muscle activity excess and immediate amount of ATP is required, in this case the…

Q: Which of the following is associated with the process of ATP re-synthesis during exercise?   a.…

A: During exercise, there occurs the utilization of large amount of energy and absence of oxygen. Under…

Q: A mutation in Hb that prevented formation of the tetramer would result in: a   A decrease in…

A: Hemoglobin are the iron containing  oxygen carrier. They are metalloprotein  that carries oxygen…

Q: Which of the following statements are TRUE? O a. Phosphofructose kinase (PFK) is used exclusively…

A: Carbohydrates are made up of carbon, hydrogen, and oxygen in the ratio of 1:2:1. Carbohydrates act…

Q: high levels of Pi and no other metabolites, what would you observe

A: Muscle fatigue is a common complaint in clinical practice in humans. Muscle fatigue is known as an…

Q: how could you explain these symptomsin someone with hyperkalemia, first overactive muscles, then…

A: Hyperkalemia is a condition characterized by elevated levels of potassium ion in blood. The normal…

Q: Which of the following is true concerning the role of Calcium in the contraction of muscle- cells?…

A: A muscle is a smooth tissue in animals. On the basis of structure, contractile properties and…

Q: Which of the following thin filament structures directly interacts with the myosin heads to form a…

A: The mechanism of contraction of skeletal muscle was best explained through - "sliding filament…

Q: When ADP and Pi are bound to myosin in the cross-bridge cycle... (MULTIPLE SELECT) A. There is no…

A: The cross-bridge cycle of muscle contraction is the process in which the actin filament and myosin…

Q: Sodium/glucose cotransporters on intestinal cells move glucose from the intestinal lumen (low…

A: Glucose is a monosaccharide sugar that serves as the principal fuel source for all living cells. Ion…

Q: What are the effects of INCREASED concentration of citrate? Select one: a. Increases the inhibitory…

A: Citrate is formed during citric acid cycle. Acetyl coenzyme A formed during pyruvate oxidation…

Q: The gap junction channel formed by connexin 43 in cardiac muscle has which of the following…

A: Connexins are a family of transmembrane proteins that form channels called gap junctions. These…

Q: b. Gardiac Smooth C. 2. Put the following steps of muscle contraction in order: a. b. C. d. The…

A: The muscle is made up of muscular tissues that consist of muscle fibers specialized for contraction.…

Q: Match the following terms with the correct numbers Lack sarcomeres, are involuntaryA. Slow oxidative…

A: The muscle fibers' primary function is to control the body's physical activity, and it contains a…

Muscle Action

A change in the body or a bodily organ as a result of its functioning is referred to as an action. Muscle action can be defined as the specific movement of a bodily part generated by the contraction of a muscle. The muscle proteins actin and myosin are the important contractile proteins involved in muscle action. Muscle contraction, in addition to movement, serves several other important functions in the body, including posture, heat generation, and joint stability. Muscle contraction maintains posture, which includes standing and sitting.