Nutrition Middy Questions with Correct Answers 2024/2025
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Nutrition Middy
Institution
Nutrition Middy
Nutrition Middy Questions with Correct Answers 2024/2025
What is sports Nutrition? - Correct Answer a special- ization within the field of nu- trition that partners closely with the study of the human
body and exercise science.
Macronutrients: - Correct Answer Carbohydrates, proteins, and fats...
Nutrition Middy Questions with Correct
Answers 2024/2025
What is sports Nutrition? - Correct Answer a special- ization within the field of nu- trition that
partners closely with the study of the human
body and exercise science.
Macronutrients: - Correct Answer Carbohydrates, proteins, and fats are classified as macronutrients
because they have a caloric value and the body needs a large quantity of them on a daily basis.
micronutrients - Correct Answer include vitamins and minerals; the prefix micro is used because the
body's daily requirements for these nutrients are small
Energy systems in terms of macronutrients: - Correct Answer - indirect chemical energy
(macronutrients) converts into ATP which is a chemical energy storage unit that drives biological
work.
-Proteins go to amino acids
-fats to glycerol
-Carbs to glucose
these processes go through the Krebs cycle and then to the electric transport chain to produce
energy
How do we Replenish ATP? - Correct Answer -Energy is released when Phosphate is cleaved to form
ADP.
-This energy is harnessed to perform work, and heat.
-Energy is needed to replenish ATP
-This energy comes from catabolism (set of metabolic pathways that breaks down molecules into
smaller units that are either oxidized to release energy, or used in other anabolic reactions) of
metabolic substrates such as macronutrients.
what system do the muscles predominately rely on? - Correct Answer -The aerobic system because
of its unending ability to make ATP. The aerobic energy system utilises fats, carbohydrate and
sometimes proteins for re-synthesising ATP for energy use. The aerobic system produces far more
ATP than either of the other energy systems but it produces the ATP much more slowly, therefore it
cannot fuel intense exercise that demands the fast production of ATP.
,ATP - Correct Answer -ATP is the direct source of energy for cel- lular functioning, it is stored in very
small quantities in the cells. For example, in muscle cells, ATP stores are so small they can be
depleted in as little as 3 seconds of muscle activity, however even after this there would still have
30% of your ATP
- Never completely depleted by physical activity. WHY? Because you still need ATP for the regular
celluar and metabolic activity and functions
How does a Negative feedback loop prevents complete depletion - Correct Answer If ATP levels fall
too low because the activity is so intense that the muscle cells cannot make ATP fast enough,
protective mecha- nisms kick in that in turn cause fatigue. Fatigue is a noted decrease in
performance level, which slows down or even stops the activity and thus protects the cell's ATP
levels.
Explain how poor food choices and timing affect energy levels - Correct Answer -Wouldn't have what
you need for your body to function (ex. Missing a meal leaves you with an inadequate energy
storage)
-have to have access to energy stores - having lots of carbs before an activity wont give you a chance
to use them to the fullest
-the relation between food and energy storage is that it is used to generate energy. This is stored as
glycogen and is then turned into ATP
-food effects our energy stores which effects the production of ATP, which effects your energy levels
-ATP fuels to work/energy required for physical activity
-Donates phosphate group to ATP to replenish ATP intracellularly
-Creatine kinase (enzyme)
-Fuels very short term rapid explosive power, last 5-15 seconds
-Examples would be very short sprints, weight lifting, pitching also is used within the context of other
systems - like in longer sprints you use this system for the first couple of seconds
-Intense short term activities lasting 1-3 minutes
-examples - sprinting, weight lifting, swimming
Aerobic system: - Correct Answer -ATP Production slow, but unlimited* not actually unlimited and
what could limit is going about your threshold, oxygen is slowing this system down, and your energy
storage eventually decreases.
-It takes a person 3 months to run out of all energy stores (HOLY COW)
-Why is this system slow? - It has to go through the multiple steps before oxygen accepts electrons
and we get the abundance of ATP needed
-fuels activities at rest (RMR) and long duration (30+ minutes) continues activities (marathon, cycling,
cross country skiing)
-Fuels activities long-duration, non-steady-state activities (soccer, hockey etc.....)
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