ENZYMES Flashcards
what is an enzyme made up of?
1) Protein: apoenzyme
2) non-protein: cofactor
what breaks down hydrogen peroxide?
Catalase
what is necessary to make thyroxin?
Iodine
what does an enzyme do?
Makes rxn rate faster
Lowers a rxns activity energy
detects temp. changes in the body
thermoreceptors
detects light
photoreceptors
What secretes horomones into ducts
exocrin glands
what secretes horomones directly into the blood
endocrin glands
detects changes in blood pressure
pressoreceptors
lipid based horomones are composed of…
Steroids
part of the brain that regulates body temp.
hypothalmus
type of feedback that is very rare in humans but are present in birth
positive feedback
a sequence of enzyme-catalyzed chemical rxns which are all linked together
metobolic pathway
what does penicillin do?
inhibits enzymes needed for bacteria to build its cell wall during growth and cell division
name of complete enzyme when its binded to a substrate
enzyme-substrte complex
where and what makes up an enzyme?
An enzyme is a protien
Ribosomes, nuleus, golgi ap., ruff er
what denatures an enzyme?
High temp, pH, heavy metals
what shape is an enzyme?
tertiary
what horomone is present in childbirth?
oxytocin horomone
what does cyanide do?
prevents the cells of the body from using oxygen
what pH does the stomach have?
LOW pH
what maintains blood glucose levels?
Hormones insulin and glucagon
what maintains blood pH?
a buffer which absorbs excess acid or excess base
what maintains blood pressure?
osmoreceptors located in the carotid arteries and aorta
