Questions Flashcards
(20 cards)
Describe how monomers join to form the primary structure of a protein
amino acids join together in a condensation reaction forming a peptide bond
creating specific sequence of amino acids
State a similarity and difference in lock and key and induced fit
substrate binds to active site
active site changes shape in induced fit
Describe how an ATP molecule is formed from its component molecules
adenine, ribose, 3 phosphate
condensation reaction
atp synthase catalyses reaction
Why is not possible to identify small structures with an optical microscope?
resolution too low as wave length of light too long
Describe the role of one organelle in digesting bacteria in the cytoplasm
lysosomes fuse with vesicle releasing hydrolytic enzymes
Student observing mitosis in root cell:
put root in small bottle of HCl. Why?
hydrolyse cellulose / break down cell wall
What is the null hyopthesis?
no difference between…
What is the statistical test to determine whether diff. is significant?
t-test
How would the mass of DNA graph be different for tumour cells?
More cells with mass of 2 as division is faster and more uncontrolled
Give two similarities in the movement of substances by diffusion and by osmosis
down gradient
passive
How are monosaccharides up taken between concentrations?
carrier protein
How are monoglycerides up taken between concentrations?
diffuse through phospholipid bilayer
Describe hydrolysis reactions involved in digestion of triglycerides
break ester bond by addition of water
Describe two functions of bile salts
emulsify lipids/fats
form micelles -> increases SA
Name the type of blood vessel that controls blood flow to muscles and how it does
arteriole
muscle relaxes causing vasodilation
Define genome
all DNA in a cell
Define proteome
all proteins that can be coded for by cells genome
What is a gene?
sequence of DNA bases that codes for a polypeptide
Describe the role of ATP in process of translation in protein synthesis
provides energy so amino acid joins to tRNA
How are organisms grouped in a phylogenetic classification system?
hierarchy with no overlaps
grouped based off of evolutionary relationships
