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Bio131 Self Test Qs > Whole Module Block > Flashcards

Whole Module Block Flashcards

1
Q

What inhibits the Fo sector of the ATP synthase?

A

Oligomycin

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2
Q

What is plastocyanin?

A

A blue copper protein that carries electrons from the b6f complex to PSI.

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3
Q

What are the ions that sulphuric acid(H2SO4) produces as it deprotonates(dissociates, ionises) in water?

A

HSO4-, SO42-, H3O+

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4
Q

Which will give a more disordered cell membrane ?

A

Cis unsaturated fatty acids

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5
Q

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?

A

Considerably lower that 63 degrees Celsius

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6
Q

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

A

Acid side chain; basic side chain; aliphatic side chain; aromatic side chain; aliphatic side chain; aromatic side chain; cyclic non-amino acid

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7
Q

What does fluorocitrate do ?

A

Permanently inhibits aconitate hydratase

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8
Q

Which of these enzymes is most likely to have biotin (vitamin B7) as a bound cofactor?

A

Benzene carboxylase

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9
Q

Which nucleotide phosphate is bound to G-actin to activate it before polymerisation?

A

Adenosine 5’-triphosphate

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10
Q

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?

A

8

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11
Q

Which intermediate of Krebs cycle is used in anabolism to make purine bases?

A

2-oxoglutarate

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12
Q

What are present in chloroplasts in the ochrophyta?

A

Chlorophyll a
Xanthophylls
Chlorophyll c
Carotenes

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13
Q

What is true about the chlorobi?

A

They assimilate CO2 using the Arnon-Buchanan cycle and use H2S as their electron donor

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14
Q

Which calcium-binding protein is found in cell-cell adhesion junctions?

A

Cadherins

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15
Q

In an organism that has octoploid(8n) somatic cells, what would be the chromosome count in the gametes ?

A

4n

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16
Q

Functions of compartmentalisation of parts of a metabolic pathway?

A
  1. To raise the concentrations of some metabolites for some enzymes
  2. To protect the cell from (e.g hydrolyse enzymes that can cleave proteins and lipids)
  3. To protect the rest of the cell from toxic intermediates
  4. To stop some metabolites reacting with other enzymes when it is not wanted
17
Q

Which vitamin of the B complex is coenzyme A derived from?

A

Panothenate

18
Q

True statements about glycosides…

A
  1. They include species like Arbuthnot, amygdalin and salicin
  2. They contain a sugar moiety acting as a ‘safety cap’ that can be enzymatically removed when needed
  3. They are reactive molecules ‘muted’ by a sugar moiety acting
  4. They include plant hormones , defence molecules etc….
19
Q

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?

A

Etioplasts that become chloroplasts

20
Q

What are the roles of alternative oxidase (AOX) in the mammalia?

A

To ‘roboot’ an overly reduces quinone pool by oxidising it back to quinone from quinol and to generate heat during (hibernation)

21
Q

What is the correct order of the intermediates of Krebs cycle ?

A

Acetyl-CoA, citrate, cis-aconitate, isocitrate, 2-oxoglutarate, succinyl-CoA, succinate, fumarate, malate, oxaloacetate

22
Q

What part of the FAD molecule is the electron carrier?

A

The flavin moiety

23
Q

What is the net reaction of krebs cylce in the eukarya ?

A

acetyl-CoA –> 2CO2 + GTP + 3NADH + QH2

24
Q

What is a known use of Δp in any organism?

A
  1. Fuelling flagellar motility
  2. Fuelling heat generation
  3. Fuelling ion transport against concentration gradients
  4. Fuelling ATP biosynthesis
25
Q

Which enzyme cofactor(s) is/are based on niacin (vitamin B3)? We have listed them in their fully reduced forms for consistency.

A

NADH and NADPH

26
Q

Which microfilament structures are required for sarcomere function in muscle cells in the mammalia?

A

Actin and myosin

27
Q

What are the main dietary forms of vitamin A that are absorbed by Homo sapiens subsp. Sapiens and other members of the primates ?

A

Carotenes from plant tissues and retinyl palmitate from animal tissues

28
Q

What is the fate of pyruvate in glycolytic pathways in any organism?

A
  1. Oxidation to lactate in homolactic fermentation in the muscles of the mammalia
  2. Oxidation to butanol-1-ol, acetone and acetic acid in ABE fermentation in some bacteria
  3. Oxidation to ethanol and carbon dioxide in alcohol fermentation some fungi
  4. The Swanson condensation and then Krebs cycle
29
Q

The respiratory chain meanquinones(MK) of the bacteria and the archaea that can be absorbed in the gut of the primates are referred to as what when in the context of a vitamin?

A

Vitamin K2

30
Q

A new leaf is forming which is wrapped in a bud as it grows as it not exposed to light until it is partially unfurled. After about a week, the young leaf is attacked by a parasitic insect that lays eggs in the leaf tissue. Which best describes the chain of plastid differentiation therein.

A

Etioplasts become chloroplasts and some of the latter become leucoplasts and then tannosomes

31
Q

How many electrons can ubiquinone-10 and cytochrome c carry?

A

2 on ubiquinone-10 and 1 on cytochrome c

32
Q

What is the path of electron flow from NADH in the standard respiratory chain of mitochondria in the eukarya?

A

NADH - -> NADH dehydrogenase - -> quinone pool - ->bc1 complex - -> cyt c - -.aa3 oxidase - ->02

33
Q

TRUE OR FALSE -all glucosides are glycosides?

A

True

34
Q

What protein is involved in anteretrograde transport or organelles along tubulin?

A

Kinesin

35
Q

What is the function of a carboxysome?

A

To elevate the pCO2 around RuBisCO and exclude O2

Bio131 Self Test Qs (7 decks)

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