Bioblast quiz

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The Bioblast quiz has been initiated by Ondrej Sobotka. 

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Exemplary quiz

Note: Questions in this exemplary quiz were used from a set of questions prepared for the MiPschool Tromso-Bergen 2018: The protonmotive force and respiratory control. 1. Coupling of electron transfer reactions to vectorial translocation of protons. 2. From Einstein’s diffusion equation on gradients to Fick’s law on compartments. - Gnaiger 2018 MiPschool Tromso A2

Only one correct answer.

1 Convert the molar format of the Gibbs force of reaction, Δ_kF_nO2 [kJ/mol], into the electrical format, Δ_kF_eO2 [V]. Which physicochemical constant is required?

constant

2 What is the meaning of the symbol z_O2?

	Elementary charge of O2 in [C]
	Alphabetical order of O2 isotope
	Atomic number of O2 = 8
	Charge number of O2 = 4

3 How are the units of electric energy [J] and electric force [V] related?

	V = (J·F)/C
	V = J·C
	V = J/(C·F)
	V = J/C

4 Express -460 kJ/mol O₂ as electrical force in units of volt [V].

	- 120 V
	1.2 V
	- 1.2 kV
	-1.2 V

5 Why should we do that?

	To express both in identical motive units [MU]
	To feel insecure
	To get free drinks
	To compliment our brain mitochondria

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Blue Book chapter 1: basic questions

1 The O2k-FluoRespirometer is primarily designed for which type of research?

	Measurement of mitochondrial membrane potential only
	Glycolysis rate measurement
	Quantification of mitochondrial DNA
	Comprehensive mitochondrial function assessment, including oxygen consumption

2 Peter Mitchell's chemiosmotic coupling theory places fundamental importance on what concept for bioenergetics?

	Mitochondrial DNA's function
	The operation of ATP synthase
	Bioblasts as the systematic unit
	The role of cytochromes

3 Which is NOT a parameter measured by integrating fluorometry into high-resolution respirometry?

	O2 consumption rates
	Mitochondrial membrane potential changes
	H2O2 production
	Glucose uptake rates

4 What components constitute the protonmotive force (pmF) essential for ATP synthesis in mitochondria?

	Only ΔpH
	ΔΨ and ΔpH
	Only ΔΨ
	ΔΨ and solute concentration

5 High-resolution respirometry (HRR) is primarily used for what purpose?

	Quantitative analysis of mitochondrial respiration and function
	pH measurement of the mitochondrial matrix
	Measuring cellular glucose concentration
	Observing mitochondria physically

6 Oxygen concentration impacts mitochondrial respiratory control by:

	Directly determining the rate of glycolysis
	Having no significant impact on mitochondrial function
	Influencing exergonic and endergonic reactions in OXPHOS
	Being inversely proportional to the rate of ATP synthesis

7 The statement that mitochondrial fitness "solely depends on the genetic makeup of the individual" is:

	Misleading, since mitochondrial fitness can be improved with supplements.
	Incorrect, as lifestyle and environmental factors also significantly influence mitochondrial fitness.
	True, but only in the context of mitochondrial diseases.
	True, genetics are the only factor.

8 What does the term "bioblasts" refer to in the context of mitochondrial physiology?

	Enzymes involved in the electron transport chain.
	A specific type of mitochondria found in muscle cells.
	The smallest units of DNA within mitochondria.
	Elementary units or microorganisms acting wherever living forces are present, essentially mitochondria.

9 Which of the following is NOT a direct measurement capability of the Oroboros-O2k?

	Calcium concentration
	ATP production
	H2O2 production
	Protein synthesis rates

10 What components constitute the protonmotive force (pmF) essential for ATP synthesis in mitochondria?

	ΔΨ and solute concentration
	Only ΔpH
	ΔΨ (mitochondrial membrane potential) and ΔpH
	Only ΔΨ

11 High-resolution respirometry (HRR) is primarily used for what purpose?

	Quantitative analysis of mitochondrial respiration and function
	pH measurement of the mitochondrial matrix
	Measuring cellular glucose concentration
	Observing mitochondria physically

12 Oxygen concentration impacts mitochondrial respiratory control by:

	Being inversely proportional to the rate of ATP synthesis
	Having no significant impact on mitochondrial function
	Directly determining the rate of glycolysis
	Influencing exergonic and endergonic reactions in OXPHOS

13 The "Q-junction" in mitochondrial respiratory control serves as:

	The location where glucose is converted into pyruvate
	The mitochondrial DNA replication site
	A convergence point for multiple electron transport pathways
	The site of ATP synthesis

14 SUIT protocols in mitochondrial research are designed to:

	Analyze the effects of substrates, uncouplers, and inhibitors on respiratory control
	Measure the physical size of mitochondria under different conditions
	Disrupt mitochondrial DNA and study its effects on respiration
	Identify the best culture medium for mitochondrial growth

15 NADH-linked substrates are used in physiological respiratory states to:

	Reflect the exclusive type of substrates used by mitochondria
	Demonstrate substrates irrelevant to mitochondrial physiology
	Bypass the electron transport system
	Represent substrates feeding electrons into the ETS, simulating physiological conditions

16 The primary purpose of integrating fluorometry with high-resolution respirometry is to:

	Allow for the observation of mitochondrial shape and size
	Increase the resolution of respirometry measurements alone
	Enable simultaneous measurement of oxygen consumption and other mitochondrial parameters
	Decrease the time required for each measurement

17 Which statement accurately describes the significance of LEAK respiration in the context of mitochondrial function?

	It is the maximum respiration rate achievable by mitochondria.
	It denotes the respiration process exclusive to glycolytic cells.
	It indicates the rate of oxygen consumption for ATP synthesis.
	It represents the energy consumed to maintain ionic gradients in the absence of ATP synthesis.

18 In mitochondrial research, the term "ET capacity" refers to:

	The capacity for energy transfer within the mitochondrion.
	The maximum electron transport rate through the electron transport chain under optimal conditions.
	The enzyme titration capacity in metabolic pathways.
	The ability of the endoplasmic reticulum to transfer proteins to mitochondria.

19 Which of the following is NOT a direct measurement capability of the Oroboros-O2k?

	Calcium ion concentration in the mitochondrial matrix
	Mitochondrial DNA replication rates
	Reactive oxygen species (ROS) production
	ATP production rates

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