Shuttle systems enables transport of metabolites in highly selectivemembranes such as the mitochondria. How is the transport effected?A. Metabolites are transported through enzyme action with the metabolites assubstrates of membrane-bound enzymes.B. Metabolites are transported through mobile carrier molecules in themembrane.C. Metabolites are transported by an antiport process whereby one metaboliteis exchanged for another.D. Metabolites are transported by carriers that binds them just like enzymesbinding substrates.E. Metabolites are transported via an energy requiring process that is usuallycoupled with ATP hydrolysis.

Mitochondrial metabolites are the coenzymes, Nucleotides etc that help in maintaining in…

Answered: Shuttle systems enables transport of…

Biochemistry

9th Edition

ISBN:9781319114671

Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.

Chapter1: Biochemistry: An Evolving Science

Section: Chapter Questions

Problem 1P

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One difference between synport and antiport is that A. only antiport requires energy. B. only synport is reversible. C. only in antiport do two substrates move in opposite directions to each other. D. only synport is a cotransport system.
Time le The net negative charge of the heteropolysaccharide chain in proteoglycans causes: Select one: a. Secretion of proteoglycans to extracellular matrix. b. The "slippery" nature of mucus. O c. Targeting of proteoglycans to lysosomes for degradation O d. Specific attachment of the sugar chains to serine residue Clear my choice One of the following functions is not of Nitric Oxide: Select one: a. mediates muscular contractions O b. prevents platelets formation O c. mediates bactericidal actions of macrophages O d. function as neurotransmitter Clear my choice
The most direct method of phosphorylation is ________ phosphorylation. a. substrate-level b. oxidative c. reductive
What is the role of the small organic non-protein compounds called coenzymes? A. Coenzymes are receivers of hydrides transferred from one substrate to be added to another substrate. B. Coenzymes are acceptors of groups from a donor substrate in transfer reactions. C. Coenzymes are electron acceptors during free-radical reactions. D. Both A and B E. All of these
Predict what would happen if E. coli cells were placed in a chemorepellent gradient.
Chronic granulomatous disease results from a failure to perform oxidative burst. This deficiency would be most likely to interfere with: Select one: a. bactericidal activity of WBCS O b. catalase activity O c. inhibition of bacterial activity O d. favism
Between cobalt-60 and LINAC, which would be the best to treat colon tumour and why? Give a detailed answer and support it with some evidence
Chemiosmosis is described as an energy coupling mechanism that O a. builds up membrane potential across membrane O b. lowers pH in the intermembrane space. O c. phosphorylates substrate molecules. d. uses the stored energy of the proton gradient to synthesize AIP e. inhibits electron transfer along the electron transport chain.
A common starvation or generalized stress signal produced and sometimes secreted by bacterial, protistan, or fungal cells is a. CAP b. cyclic ATP c. cyclic GTP d. cyclic AMP e. cyclic ADP f. glucose g. Lactic acid h. Ethanol or CO2
Among others in an anaerobic digester, sulfate-reducing bacteria compete with methane-forming bacteria for substrate and electron acceptor. What parameters influence which of the two bacterial groups win the competition? A.Only the ORP B. Only the substrate-to-sulfate ratio C. The ORP and the substrate to sulfate ratio.
Model 1 and Model two are diagrams showing the process of two types of bulk transport which require energy. Which of the following statements correctly describes the type of transport that is occurring in Model 1 and Model 2? A . Model 1 and 2 are types of passive transport. B . Model 1 and 2 help to transport only one molecule at time. C . Model 1 shows endocytosis, where the cell surrounds molecules from outside the cell and takes the molecules into the cell. D . Model 2 shows endocytosis, where the cell surrounds molecules from inside the cell and releases them outside of the cell.
Discuss the following statement: ‘Microbial metabolisms are coupled acrossthe anoxic-oxic interface in several environments.’ Draw on at least threespecific examples to support your arguments.

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