week 4 Flashcards
what 4 elements make up 96%of body
O,C,H,N
carbs, lipids and proteins are classified as what molecules ?
organic
an eg of inorganic substance
water
what is the most important metabolic fuel molecule in the body is?
glucose
a polysaccharide that is formed in the liver & muscle cells to store glucose is ?
glycogen
an eg of a polysaccharide stored in human ?
glycogen
lipids are a-form essential structural components of cells b-provide roughly twice the energy as carbs c-help maintain body temp d- all
d
a fatty acid that contains 3 double covalent bonds in C chains is?
polyunsaturated
most of the fat found in the human body is in the form of a-steroids b-phospholipids c-triglycerides
c
glycerol is the backbone for a-disaccharides b-DNA c-peptides d-triglyceride
d
a fatty acid with only single covalent bonds is ?
saturated
cholesterol, phosphoslipids and glycolipids are egs of __ lipids
structural
a shortage of cholesterol in the body would interfere with the formation of a-sex hormones b-proteins c-nucleic acids
a
A __ accepts hydroxide ions in water & ___ releases hydrogen ions in water
basic / acid
base/acid
___ molecule are compounds that contain carbon as the primary structural atom
organic
glycogen & starch are eg of
polysaccharides
the __ of a solution is the negative logarithm of the hydrogen ion concentration expressed in mole per litre in the solution
pH
____ lipids are lipid molecules that form biological membranes
structural
bonds that occur in polar compounds like water
hydrogen
chemical bonds where electrons are shared
covalent
what kind of solution will cause lysis (breakdown) of R blood cells
hypotonic
