FREQUENTLY TESTED QUESTIONS WITH VERIFIED ANSWERS
Cell membranes are composed of - ANSWER-phospholipids and proteins
Agar - ANSWER-Found in seaweed and commonly used to prepare solid
culture media.
Chitin - ANSWER-Polysaccharide found in arthropod exoskeletons and
fungal cell walls. Tough outer shell
peptidoglycan - ANSWER-A type of polymer in bacterial cell walls
consisting of modified sugars cross-linked by short polypeptides. THE
RIGID PART of cell walls.
Gram negative bacteria have smaller amounts of the rigid structure than
that of gram positive.
Lipopolysaccharide - ANSWER-Gram negative bacteria. complex of lipid
and polysaccharide responsible for symptoms of fever and shock
, Glycocalyx - ANSWER-a bacterial capsule that is made of a fuzzy coat of
sticky sugars
Triglyceride - ANSWER-a lipid made of three fatty acid molecules and one
glycerol molecule
Glycerol - ANSWER-A three-carbon alcohol to which fatty acids are
covalently bonded to make fats and oils.
Hydrophilic - ANSWER-Water loving
Hydrophobic - ANSWER-Water fearing
Cholesterol - ANSWER-Group of lipids called steroids. Commonly found in
cell membranes and animal hormones
Amino acid - ANSWER-Building blocks of protein
Peptide - ANSWER-short chain of amino acids