MAOD and Anaerobic Capacity Quiz & Substrate Utilisation Quiz
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Questions and Answers

Which of the following accurately describes the contribution of anaerobic energy systems during high-intensity exercise?

  • D) Anaerobic energy systems only contribute to ATP production during endurance exercise.
  • B) Anaerobic energy systems only contribute to ATP production during low-intensity exercise.
  • A) Anaerobic energy systems contribute significantly to ATP production during high-intensity exercise. (correct)
  • C) Anaerobic energy systems do not contribute to ATP production during exercise.

    • What is the process of lipolysis?

  • B) The process of breaking down carbohydrates into glucose.
  • C) The process of breaking down lipids into fatty acids and glycerol. (correct)
  • D) The process of breaking down glycogen into glucose.
  • A) The process of breaking down proteins into amino acids.

    • What is the recommended intake of protein for the body?

  • A) 0.8 grams per kilogram of body weight per day.
  • D) 2 grams per kilogram of body weight per day.
  • B) 1 gram per kilogram of body weight per day. (correct)
  • C) 1.5 grams per kilogram of body weight per day.

    • What is the role of lipids and protein in exercise performance of varying intensity?

    <p>C) Lipids and protein are important energy sources during low-intensity exercise.</p> Signup and view all the answers

    What is Maximal Accumulate Oxygen Deficit (MAOD)?

    <p>D) The maximum amount of oxygen that can be accumulated during exercise.</p> Signup and view all the answers

    Which of the following is not a classification of fatty acids?

    <p>Branched chain</p> Signup and view all the answers

    What is the recommended intake of protein per kilogram of body weight for an athlete?

    <p>1.8g/kg</p> Signup and view all the answers

    Which of the following is not a role of lipids in the body?

    <p>Muscle contraction</p> Signup and view all the answers

    What is the relationship between workload and intensity during high-intensity exercise?

    <p>Workload decreases as intensity increases</p> Signup and view all the answers

    What is the process of protein catabolism?

    <p>Proteolysis</p> Signup and view all the answers

    During high-intensity exercise, which fuel source is preferred by the body?

    <p>Glycogen</p> Signup and view all the answers

    What happens when there is insufficient carbohydrate being processed in the body?

    <p>Lipids are converted into ketones</p> Signup and view all the answers

    What are the side effects of ketosis?

    <p>Low energy</p> Signup and view all the answers

    What percentage of energy does fat provide during rest and light exercise?

    <p>80-90%</p> Signup and view all the answers

    What stimulates Hormone Sensitive Lipase (HSL) during exercise?

    <p>Epinephrine, Norepinephrine and Growth Hormone</p> Signup and view all the answers

    What is the recommended daily intake of lipids?

    <p>Less than 30% of total daily intake should be lipids</p> Signup and view all the answers

    Which of the following is a by-product that must be converted to urea and removed in urine during protein catabolism?

    <p>Ammonia</p> Signup and view all the answers

    What is the process of removing the amine group from an amino acid called?

    <p>Deamination</p> Signup and view all the answers

    What is the role of the Krebs cycle in energy production from macronutrients?

    <p>It produces energy from all macronutrients</p> Signup and view all the answers

    What is the primary role of proteins in the body?

    <p>Structural support for hair, nails, and skin</p> Signup and view all the answers

    What are the essential amino acids required by the body?

    <p>8 amino acids that the body cannot synthesize</p> Signup and view all the answers

    What is the recommended daily intake of protein for athletes?

    <p>1.2-1.8g/kg body mass</p> Signup and view all the answers

    Which of the following is a correct statement about lipids?

    <p>Phospholipids are a type of dietary lipid</p> Signup and view all the answers

    Which of the following correctly describes the hydrophilic end of a fatty acid?

    <p>It is attracted to water</p> Signup and view all the answers

    Which of the following is a correct statement about muscle fiber types?

    <p>Athletes in power sports tend to have a predominance of slow-twitch oxidative fibers</p> Signup and view all the answers

    During beta-oxidation, how many cycles are required to completely break down a 20-carbon fatty acid?

    <p>10 cycles</p> Signup and view all the answers

    Which of the following is NOT a bioenergetic metabolic pathway to produce ATP?

    <p>Krebs cycle</p> Signup and view all the answers

    How many ATP molecules are used in the activation of a fatty acid during beta-oxidation?

    <p>2 ATP</p> Signup and view all the answers

    What is the predominant energy source for the first 5-7 seconds of high-intensity exercise?

    <p>ATP-PCr system</p> Signup and view all the answers

    For each acetyl-CoA that enters the Krebs cycle during beta-oxidation of palmitate, how many FADH2 molecules are produced?

    <p>1 FADH2</p> Signup and view all the answers

    What is the process by which excess macronutrients are stored in the body?

    <p>Lipogenesis</p> Signup and view all the answers

    What is the main difference between saturated and unsaturated fatty acids?

    <p>Saturated fatty acids have single bonds between carbon atoms, while unsaturated fatty acids have double bonds between carbon atoms</p> Signup and view all the answers

    What is the process of triglyceride formation?

    <p>Condensation (dehydration) that cleaves off a water molecule</p> Signup and view all the answers

    What is the main function of high-density lipoproteins (HDL)?

    <p>To remove cholesterol from the arterial wall and deliver it to the liver</p> Signup and view all the answers

    What is the fate of glycerol released during lipolysis in adipose tissue?

    <p>It is converted into 3-phosphoglyceraldehyde and used in glycolysis as a source of energy production</p> Signup and view all the answers

    What is the role of albumin in transporting free fatty acids in the blood?

    <p>Albumin is a protein that shuttles free fatty acids around the body in the blood to the tissues where they are required for energy production or storage</p> Signup and view all the answers

    What is the process of beta-oxidation during fatty acid metabolism?

    <p>Pairs of carbon atoms are removed from a fatty acid to form acetylCoA that can enter the Krebs Cycle</p> Signup and view all the answers

    Which macronutrient is the primary source of fuel for the glycolytic system during exercise?

    <p>Carbohydrate</p> Signup and view all the answers

    What happens to the excess hydrogen ions (H+) produced during exercise when the NAD+ carriers become overwhelmed?

    <p>They are dropped off to pyruvate, which converts to lactic acid and then lactate and H+</p> Signup and view all the answers

    Why is it important to regularly replenish glycogen stores by eating carbohydrates?

    <p>To prevent the accumulation of lactate and H+ ions in the muscles</p> Signup and view all the answers

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