Lecture One Flashcards
(41 cards)
a _________ can be described as any substance in food that the body can use to synthesize tissues and obtain/create energy
nutrient
there are ___ types of nutrients
2
___________ nutrients; a substance that must be ingested, as the body cannot produce it enough on its own
essential
_____ ________ nutrients, a substance that the body requires on a daily basis but does not need to be ingested since the body can produce it on its own
non-essential
a ___________ is a nutrient that is needed in relatively large amounts in the diet
macronutrient
the 3 main groups include ________,_____ and _______
carbs, fats and proteins
_________ are often the major source of energy for our body
carbohydrates
the process of metabolism allows for proper ________ _______
cellular function
there are 2 main ________ _______ that take place at a cellular level
metabolic reactions
________ reactions break-down large organic molecules into smaller particles, therefore releasing the energy found in chemical bonds
catabolic
through catabolic reactions _____ is created
ATP
T/F depending on what molecule is broken down, the yield in ATP created will differ
true
T/F catabolic reactions are 100% efficient
false, usually the amount yielded is about 40% ATP
__________ increases blood glucose levels by breaking down fats and proteins
cortisol
________, stimulates glycogen breakdown in the liver
glucagon
___________, stimulates the heart rate and respiratory rate, therefore leading to molecule breakdown to increase free glucose
adrenaline (epinephrine)
_________ reactions involves joining of small molecules to create larger ones
anabolic
T/F anabolic joining processes will require ATP that was formed from catabolic reactions
true
________ reactions create new molecules, cells, and tissues - i.e protein synthesis in muscle growth, development and repair
anabolic
_________ hormone, stimulates growth of cells, tissues and bones
growth
________-like grow factor, stimulates the growth of muscle and bone when inhibiting cell death (apoptosis)
insulin
__________, increases muscle mass and is bone strengthening
testosterone
__________, increases fat deposition (around organs, between muscles, in breast tissue etc)
estrogen
in summary, ___________ is the sum of all catabolic and anabolic reactions in the body
metabolism