o chm and bio Flashcards
When comparing saturated and unsaturated fats, the unsaturated fats have______ and are ______ at room temperature?
Cis dbl bonds and liquids
the sex hormones estrogen, progesterone, and testosterone belong to which class of molecules?
Lipids - the sex hormones are lipids bcuz of their insolubility in H2O
which of the following is a polymer?
1)Glucose 2)Cellulose 3) Triacylglycerol 4) Fructose
Cellulose
Nitrogen bases are classified as either purines or pyrimidines. ex of purines are?
Adenine and Guanine
_____ is always involved in hydrolysis
Water
Sugars are molecules tht have _____ C:H:O and are called _____?
1:2:1 ratio of; carbohydrates
The components of nucleic acids are _____?
Nitrogenous base, a pentose sugar, and phosphate
What type of bond forms while joining monomers?
covalent
At a conference, the speakers grand finale was sauteing mealworms. they wer crunchy because their exoskeletons contain polysacchride _____?
Chitin
Which type of protein shields a newly forming protein from cytoplasmic influences while its folding into its funtional form?
1) Antibodies 2) Receptor proteins 3) Enzymes 4) Fibrous proteins
5) Chaperonins
Chaperonins
A polysaccharide is used for storing energy in human muscle and liver cells is?
Glycogen
In dehydration synthesis rxn, _____ is always formed as a by product to the rxn?
water
Sickle-cell anemia is a disease tht is caused by ______ in the _______ of the protein?
a single amino acid change; primary structure
The secondary structure of a peptide backbone is stabilized by _______ forming either ______ or a ______?
H-Bond; alpha helix; beta pleated sheet
the sequence of aminos acids in a protein are called _____ structure of the protein?
Primary
One characteristic shared by sucrose, lactose, and maltose is tht _____?
they all are disaccharides
What are the four main classes of macromolecules , molecules of life?
Carbohydrates, Nucleic acids, Proteins, Lipids
In living organisms, DNA exists as a ______ with the strand(s) ______?
dbl helix , running antipar
In living organisms, DNA exists as a _____ with the strand(s) _____?
Dbl helix, running antiparellel
the lipids tht form the main structural component of cell membranes are?
Phospholipids
sugars have a ____ grp tht interacts with a _____ grp tht forms ring structures wen the dry molecule is placed in H2O.
Carbonyl R-C=O. hydroxyl R-OH
Protein molecules are polymers (chains) of _____?
Amino acid molecules
Carbohydrates are used in our bodies mainly for ______?
Energy storage and release
the molecule with 4 fused rings tht is found in animal membranes and is the precursor of vertebrate sex hormones is _____?
Cholesterol
The tertiary structure of a protein includes all of the following interactions except _____ bonds.
1) Disulfide bridge 2) Hydrophobic 3) Ionic 4) Hydrophilic 5) Peptide
Peptide
The proper 3D shape and folding of a protein is assisted by _____?
Molecules called Chaperonis
A shortage of phosphorus in the soil would make it especially difficult for plants to manufacture ____?
DNA
