Whole Module Block Flashcards
What inhibits the Fo sector of the ATP synthase?
Oligomycin
What is plastocyanin?
A blue copper protein that carries electrons from the b6f complex to PSI.
What are the ions that sulphuric acid(H2SO4) produces as it deprotonates(dissociates, ionises) in water?
HSO4-, SO42-, H3O+
Which will give a more disordered cell membrane ?
Cis unsaturated fatty acids
If palmitic acid(C16:0) has a melting point of 63 degrees Celsius, what would you expect the melting point of palmitoleic acid(C16:1 omega-7-cis) to be?
Considerably lower that 63 degrees Celsius
In the below heptapeptide, which is written with the N-terminal end on the lefthand side, what are the amino acid groupings to which each amino acyl residue in order (N-terminus to C-terminus) belongs?
a heptapeptide
Acid side chain; basic side chain; aliphatic side chain; aromatic side chain; aliphatic side chain; aromatic side chain; cyclic non-amino acid
What does fluorocitrate do ?
Permanently inhibits aconitate hydratase
Which of these enzymes is most likely to have biotin (vitamin B7) as a bound cofactor?
Benzene carboxylase
Which nucleotide phosphate is bound to G-actin to activate it before polymerisation?
Adenosine 5’-triphosphate
In non-cyclic photophosphorylation in the viridiplantae, how many hydrogen ions end up in the thylakoid lumen from the process as a whole for each molecular oxygen formed during the process?
8
Which intermediate of Krebs cycle is used in anabolism to make purine bases?
2-oxoglutarate
What are present in chloroplasts in the ochrophyta?
Chlorophyll a
Xanthophylls
Chlorophyll c
Carotenes
What is true about the chlorobi?
They assimilate CO2 using the Arnon-Buchanan cycle and use H2S as their electron donor
Which calcium-binding protein is found in cell-cell adhesion junctions?
Cadherins
In an organism that has octoploid(8n) somatic cells, what would be the chromosome count in the gametes ?
4n
Functions of compartmentalisation of parts of a metabolic pathway?
- To raise the concentrations of some metabolites for some enzymes
- To protect the cell from (e.g hydrolyse enzymes that can cleave proteins and lipids)
- To protect the rest of the cell from toxic intermediates
- To stop some metabolites reacting with other enzymes when it is not wanted
Which vitamin of the B complex is coenzyme A derived from?
Panothenate
True statements about glycosides…
- They include species like Arbuthnot, amygdalin and salicin
- They contain a sugar moiety acting as a ‘safety cap’ that can be enzymatically removed when needed
- They are reactive molecules ‘muted’ by a sugar moiety acting
- They include plant hormones , defence molecules etc….
A farmer is forcing garden asparagus by growing under black plastic to totally exclude light. This produces bone-white asparagus but on exposure to light, it becomes green. Which of these sequences best describes the plastid organelles present at each stage?
Etioplasts that become chloroplasts
What are the roles of alternative oxidase (AOX) in the mammalia?
To ‘roboot’ an overly reduces quinone pool by oxidising it back to quinone from quinol and to generate heat during (hibernation)
What is the correct order of the intermediates of Krebs cycle ?
Acetyl-CoA, citrate, cis-aconitate, isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, oxaloacetate
What part of the FAD molecule is the electron carrier?
The flavin moiety
What is the net reaction of krebs cylce in the eukarya ?
acetyl-CoA –> 2CO2 + GTP + 3NADH + QH2
What is a known use of Δp in any organism?
- Fuelling flagellar motility
- Fuelling heat generation
- Fuelling ion transport against concentration gradients
- Fuelling ATP biosynthesis
