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CBSE Questions for Class 11 Medical Biology Respiration In Plants Quiz 15 - MCQExams.com
CBSE
Class 11 Medical Biology
Respiration In Plants
Quiz 15
Select the correct statement regarding glycolysis.
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Glucose is completely oxidized
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Glucose is partially oxidized
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It provide eight ATP during anaerobic respiration
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Its key product is triose sugar
Explanation
Glycolysis is the process of the complete breakdown of glucose into two molecules of pyruvate in the presence of oxygen. It takes place in the cytoplasm. During the process of glycolysis, eight molecules of ATP are formed. The key product of glycolysis is pyruvate, which is a triose sugar.
So, the correct answer is 'Option A & D'.
Which or the following is the high energy molecule produced by oxidative decarboxylation in aerobic ,respiration but is neither the intermediate of TCA nor EMP?
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$$NADH+H^+$$
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$$ATP$$
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Acetyl CoA
0%
Succinyl CoA
Explanation
The pyruvate is the end product of the EMP or the glycolysis. But it cannot take part in the Kreb's cycle directly. It has to undergo oxidative decarboxylation with the help of an enzyme-complex called pyruvate dehydrogenase to form acetaldehyde. Then, the coenzyme-A binds to the acetaldehyde to form the acetyl co-A. This two carbon molecule is rich in energy and it is not a part of EMP or glycolysis. Because it starts the process of Kreb's cycle by binding with the oxaloacetic acid, so it is not an intermediate of TCA or Kreb's cycle.
Hence, the correct answer is 'Acetyl CoA'
Pyruvic acid $$\underset {dehydrogenase}{\xrightarrow {Pyruvate}} Acetyl\ CoA + CO_{2} + NaDH_{2}$$
In this given reaction which of the following coenzyme is not used?
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$$Mg^{++}$$
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$$NAD$$
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$$Co-A$$
0%
$$TPP$$
Explanation
Pyuvrate dehydragenase is an enzyme that catalyse the reaction of pyruvate and a lipoamide to give the acetylated dihydrolipoamide and carbon dioxide. The conversion requires the coenzyme thiamine Pyrophasphate Whereas, $$Mg^{++}$$ plays a main role in body is to regulate the functions of enzymes which in turn are responsible for Various chemical reactions.
It plays an important role in the breakage of glucose and fat molecules in the regulation of cholestrol.
FAD takes part in TCA cycle as electron acceptor during conversation of
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Succinyl CoA to succinic acid
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Fumaric acid to malic acid
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$$\alpha$$ - Ketogluterate to succinyl CoA
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Succinic acid to fumaric acid
Explanation
Krebs's cycle is also called as TCA cycle. In this, succinic acid is converted into fumaric acid by enzyme succinate dehydrogenase. In this step, FAD acts as electron acceptor and is converted into FADH$$_2$$.
Thus, the correct answer is 'Succinic acid to fumaric acid.'
Which of the following is incorrect about fermentation?
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Toddy is made by fermenting sap from palms.
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Propionibacterium is used to ferment the cheese.
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The puffed-up appearance of dough is due to the production of $${ CO }_{ 2 }$$.
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Fermentation in muscles produces alcohol.
Explanation
A. Toddy is created by fermenting the saps of various species of palm trees such as the palmyra, date palms, and coconut palms.
B.
Swiss cheese is obtained by propionic fermentation which occurs due to the propionibacteria.
C. The yeast added to flour reproduces rapidly and produces carbon dioxide gas which gives a puffed-up appearance.
D. Fermentation in muscle cells produces a waste product called lactic acid which contributes to fatigue in muscles.
So, the correct answer is option D.
If one molecule of acetyl-CoA oxidized inside eukaryotic cell then gain of energy is equal to
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$$12 ATP$$
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$$9 ATP$$
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$$18 ATP$$
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$$15 ATP$$
Explanation
Acetyl-CoA enters Krebs cycle to undergo oxidation. Three NADH, one GTP and one FADH$$_{2}$$ are produced during Krebs cycle. One NADH is equivalent to three ATP while one FADH$$_{2}$$ is equivalent to two ATP.
Hence total ATP produced are -
3*3 + 2 + 1 + 12
So, the correct option is '12 ATP'.
The three boxes in this diagram represent the three major biosynthesis pathways in aerobic respiration. Arrows represent net reactants or products.
Arrow numbered $$4$$, $$8$$ and $$12$$ can all be?
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NADH
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ATP
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$$H_2O$$
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$$FAD^+$$ or $$FADH_2$$
Explanation
During glycolysis, the carboxylic acid, nicotinamide adenine dinucleotide (NAD+), is reduced to NADH, but this must be regenerated for glycolysis to continue.
In the presence of oxygen, the NADH is oxidized to NAD+ within the mitochondria, producing pyruvate.
The eight steps of the citric acid cycle are a series of redox, dehydration, hydration, and decarboxylation reactions. Each turn of the cycle forms one GTP or ATP as well as three NADH molecules and one FADH2 molecule, which will be used in further steps of cellular respiration to produce ATP for the cell.
Hence, Arrow numbered 4, 8 and 12 can all be NADH.
So, the correct answer is 'NADH'.
The value of R.Q. is less than one of which substrate?
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Glucose
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Sucrose
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Starch
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Proteins
Explanation
The value of R.Q for a substrate is the ratio of volume of $$CO_2$$ evolved to amount of $$O_2$$ consumed.
Glucose, Sucrose and Starch are carbohydrates hence the value of RQ is 1
For proteins the value of R.Q is 0.8, which is less than 1.
So, the correct answer is '
Proteins'
Which of the following correctly shows the difference in the products of glycolysis and Krebs cycle per glucose molecule?
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Glycolysis - 4 ATP, 1 reduced NAD, Krebs Cycle - 4 reduced NAD, 1 reduced FAD, 1 ATP
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Glycolysis - 4 ATP, 2 reduced NAD, Krebs Cycle - 8 reduced NAD, 2 reduced FAD, 2 ATP
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Glycolysis - 2 ATP, 1 reduced NAD, Krebs Cycle - 3 reduced NAD, 1 reduced FAD, 1 ATP
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Glycolysis - 2 ATP, 2 reduced NAD, Krebs Cycle - 6 reduced NAD, 2 reduced FAD, 2 ATP
Explanation
In glycolysis, 2 net ATP is generated along with 1 NADH.
2 pyruvate enter the link reaction forming acetyl CoA.
Two acetyl CoA enter Krebs cycle forming 1 x 2=GTP (which is equivalent to two ATP) and 3 x 2= 6NADH and 2 x 1=2FADH$$_2$$.
So, the correct option is '
Glycolysis - 2 ATP, 2 reduced NAD, Krebs Cycle - 6 reduced NAD, 2 reduced FAD, 2 ATP
'
In Krebs's cycle, the conversion of succinyl CoA to succinic acid requires?
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Acetyl CoA$$+$$GDP$$+$$ip
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CoA$$+$$GTP$$+$$ip
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Acetyl CoA$$+$$GTP$$+$$ip
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GDP$$+$$ip
Explanation
In eukaryotes, the citric acid cycle takes place in the matrix of the mitochondria, just like the conversion of pyruvate to acetyl CoA. In prokaryotes, these steps both take place in the cytoplasm. The citric acid cycle is a closed loop; the last part of the pathway reforms the molecule used in the first step. the CoA of succinyl CoA is replaced by a phosphate group, which is then transferred to ADP to make ATP. In some cells,GDP—guanosine diphosphate—is used instead of ADP, forming GTP—guanosine triphosphate—as a product. The four-carbon molecule produced in this step is called succinate.
So the correct option is 'acetyl CoA + GTP + ip'.
RQ in anaerobic respiration is?
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$$0.7$$
0%
$$0.9$$
0%
Unity
0%
Infinity
Explanation
During aerobic respiration, oxygen is consumed and carbon dioxide is released. The ratio of the volume of carbon dioxide given out to the volume of oxygen absorbed in respiration, i.e., CO$$_2$$/O$$_2$$ is called respiratory quotient (RQ) or respiratory ratio. in anaerobic respiration, CO2 is evolved but O2 is not consumed, and therefore RQ is infinite (∞).
Equation is as follows:
C$$_6$$H$$_12$$O$$_6$$ $$\rightarrow$$ 2C$$_2$$H$$_5$$OH + 2CO$$_2$$ + energy
RQ CO$$_2$$/O$$_2$$ = 2/0 = infinity
So the correct option is 'infinity'.
One of the following is common to glycolysis as well as Krebs cycle in eukaryotes.
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Substrate level phosphorylation
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Photophosphorylation
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Localization in mitochondria
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Production of $$FADH_2$$
Explanation
Substrate-level phosphorylation is a metabolic reaction that results in the formation of ATP or GTP by the direct transfer of a phosphoryl (PO3) group to ADP or GDP from another phosphorylated compound.
The first substrate-level phosphorylation occurs after the conversion of 3-phosphoglyceraldehyde and Pi and NAD+ to 1,3-bisphosphoglycerate via glyceraldehyde 3-phosphate dehydrogenase.
The second substrate-level phosphorylation occurs by dephosphorylating phosphoenolpyruvate, catalyzed by pyruvate kinase, producing pyruvate and ATP.
Hence, One of the following is common to glycolysis as well as Krebs cycle in eukaryotes is Substrate level phosphorylation.
So, the correct answer is 'Substrate level phosphorylation'.
Mark the incorrect statement.
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Breaking of C-O bonds of complex molecules by oxidation cells leading to the release of a lot of energy is called cellular respiration.
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Initial stage of respiration takes place in cytoplasm.
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Incomplete oxidation of pyruvate by the stepwise removal of all the hydrogen atoms, leaving three molecules of CO$$_2$$.
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TCA cycle starts with the condensation of acetyl group with OAA and water to yield citric acid.
Select the number of incorrect statements for the process of fermentation.
A . It involves only partial breakdown of glucose.
B $$NADH_2$$ is oxidized to NAD by reduction of organic compound.
C. No ATP are produced during fermentation as it is extracellular process in some microbes.
D. There is no ETS and Kreb's cycle.
E. Maximum concentration of alcohol in alcohol in alcoholic brevarage is 100 %.
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0%
2
0%
3
0%
4
0%
5
Explanation
Fermentation can be defined as the partial breakdown of glucose to produce ethyl alcohol and carbon dioxide.
It releases energy in form of ATP molecules.
2 ATP molecules are produced per glucose.
2NADH molecules provide energy which converts pyruvate into lactic acid.
The maximum concentration of alcohol in alcoholic beverages is 15%-16%.
Option C and E are incorrect statements.
So, the correct answer is'2'.
How many molecules of pyruvic aci are formed in glycolysis
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2
0%
1
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15
0%
16
Which of the following is incorrect for glycolysis?
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The end products of this process are $$CO_2$$ and $$H_2O$$
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IT produces ATP
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It uses ATP
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None of these.
Explanation
So, the correct option is 'The end product of this process are CO2 and H2O'.
The end product of glycolysis is
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ATP (Adenosine triphoshate )
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Protien
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Carbohydrates
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All of the above
Explanation
Glycolysis is a series of catabolic reactions which breaks down large molecules into smaller ones.
During glycolysis, glucose is broken down to form pyruvate and also produces two molecules of ATP.
So, the correct answer is 'ATP'.
Final electron acceptor in fermentation
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$$O_2$$
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organic molecule
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$$H_2O$$
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always pyruvic acid
Which of these statements is correct?
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Glycolysis occurs in cytosol.
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Glycolysis operates as long as it is supplied with NAD that can pick up hydrogen atoms.
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Enzymes of TCA cycle are present in mitochondrial matrix.
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Oxidative phosphorylation takes place in outer mitochondrial membrane.
Explanation
Glycolysis
is the first phase of cellular respiration. It
takes place
in the cytoplasm where associated enzymes and factors are located.
Enzymes of the TCA cycle are located in the mitochondrial matrix except one which is located in the inner mitochondrial membrane in eukaryotes and in the cytosol in prokaryotes.
Oxidative phosphorylation takes place in the inner mitochondrial membrane.
So, option A is incorrect.
The energy-releasing metabolic process in which substrate is oxidised without an external electron acceptor is called?
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Glycolysis
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Fermentation
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Aerobic respiration
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Photorespiration
In respiration pyruvic acid is
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Formed only when oxygen is available
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One of the products of Kreb's cycle
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Broken down into a two carbon fragment and $$CO_2$$
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A result of protein breakdown.
Explanation
Correct Option:
C
Explanation:
The last step in glycolysis yields pyruvic acid which is a 3 C compound. Now, this pyruvic acid may undergo anaerobic respiration in absence of oxygen.
However, in presence of oxygen, it enters Krebs' cycle by undergoing oxidative decarboxylation using pyruvate dehydrogenase complex. This is a link reaction between glycolysis and Krebs' cycle.
As a result of decarboxylation, pyruvic acid forms Acetyl CoA (2 C compound) and releases $$CO_2$$.
So the answer is 'Broken down into two-carbon fragments and $$CO_2$$'.
How many molecule of $$CO_2$$ are released in citric acid cycle?
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One
0%
Two
0%
Three
0%
Six
Explanation
Citric acid cycle is also called as tricarboxylic acid cycle or krebs cycle. Acetyl CoA enters a cyclic pathway known as citric acid cycle. The citric acid cycle is a series of reactions that produces two carbon dioxide molecules (when isocitrate change into alpha-ketoglutarate and alpha-ketoglutarate is converted into succinyl CoA), one GTP/ATP, and reduced forms of NADH and $$FADH_2$$.
So, the correct option is option B.
Decomposition is a type of _________.
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Aerobic respiration
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Anaerobic respiration
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exothermic reaction
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None of these
Find the incorrect statement.
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In electron transport chain, electrons move downhill w.r.t. redox potential scale
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Electrons removed from PSI are replaced by PS II in photosynthesis
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During splitting of water, $$H^+$$ and $$O_2$$ are released inside the lumen
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When the light only beyond $$680$$nm and wavelength is available, both cyclic and non-cyclic photo phosphorylation's occur
The maximum yield of ATP from the complete oxidation of sucrose via aerobic respiration is?
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$$37$$
0%
$$44$$
0%
$$60$$
0%
$$50$$
Total number of ATP molecules gain during complete oxidation of $$1$$ molecules of glucose by substrate level phosphorylation.
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$$8$$ATP
0%
$$6$$ATP
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$$4$$ATP
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$$1$$ATP
Synthesis of glucose from sources other than carbohydrate is called?
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Glycolysis
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Glycogenesis
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Gluconeogenesis
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Glycogenolysis
Explanation
Glycolysis is the process of partial oxidation of glucose into two molecules of pyruvic acid through ten enzyme-mediated reactions releasing ATP and reducing NADH$$_2$$. It is common in both aerobic and anaerobic respiration. It occurs in the cytoplasm.
Glycogenesis is the formation of glycogen (primary carbohydrate) stored in the liver and muscle cells of animals from glucose.
Gluconeogenesis is a metabolic pathway that results in the generation of glucose from certain non-carbohydrate carbon substrates.
Glycogenolysis is the process of breaking down glycogen into glucose.
So, the correct answer is option A.
Which one is incorrect with respect to cell respiration?
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Krebs cycle produces $$CO_2$$
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Glycolysis requires $$O_2$$
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$$NADH_2$$ is oxidised in $$ETC$$
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None of these
Number of oxygen atoms required for aerobic oxidation of one pyruvate.
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$$5$$
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$$8$$
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$$10$$
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$$12$$
Which of the following is the step of TCA cycle showing substrate levelphosphorylation?
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Succinyl CoA$$\rightarrow $$ fumarate
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Succinyl CoA $$\rightarrow$$ succinate
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Fumarate$$\rightarrow $$Malate
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Malate$$\rightarrow $$oxaloacetate
Explanation
option $$"B"$$ is correct.
Succinyl COA $$\rightarrow$$ succinate is the step of TCA cycle showing substrate level phosphorylation.
The
cleavage of the thioester bond of succinyl COA is coupled with the phosphorylation of an ADP
or a
GDP
(substrate level phosphorylation). This is catalyzed by succinyl COA synthetase. ATP and GTP are energetically
equivalent.
Which one of the following is a $$4C$$ compound?
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Oxaloacetic acid
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Pyruvic acid
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Citric acid
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RUBP
Explanation
Oxaloacetic acid is a four-carbon compound. It is the first stable product which is formed when the phosphoenolpyruvate is carboxylated in $$C_4$$ cycle in the presence of an enzyme phosphoenolpyruvate carboxylase. Its structure is shown below:
A.
Oxaloacetic acid is $$4C$$ compound.
B. Pyruvic acid is $$3C$$ compound.
C. Citric acid is $$5C$$ compound.
D. RUBP is
$$5C$$ compound.
Hence, the correct answer is '
Oxaloacetic acid'
Select the incorrect statement regarding Kreb's cycle.
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The FAD molecular is reduced to$$ FADH_2$$ during the conversion succinic acid to fumaric acid
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Substrate level phosphorylation
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Succinate dehydrogenase in formded atached to the inner mitochondrial membrane
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The cycle starts with condensation of acetyl CoA with citric acid
In Citric acid cycle how many substrate level phosphorylation (s) occur between $$\alpha-$$ ketoglutaric acid and succinic acid?
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Four
0%
One
0%
Two
0%
Three
Haemocyanin is respiratory pigment of?
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0%
Molluscs
0%
Crustaceans
0%
Millipede
0%
Both $$(1)$$ & $$(2)$$
During fermentation what does not occurs ___________________.
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Oxidation of glucose into pyruvate
0%
Substrate level phosphorylation
0%
Oxidation of $$NADH_2$$
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Oxidative phosphorylation.
Explanation
Answer is option D i.e. "Oxidative phosphorylation"
Fermentation occurs only when there is no oxidative phosphorylation to maintain the production of ATP by glycolysis. During fermentation, pyruvate is metabolized to various compounds such as lactic acid, ethanol and carbon dioxide or other acids. Also, fermentation reactions occur in the cytoplasm while oxidative phosphorylation occurs in mitochondria.
How many rounds of Krebs cycle will be required to produce $$6$$ FADH2 molecular
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$$3$$
0%
$$6$$
0%
$$12$$
0%
$$24$$
Explanation
Answer (A): 3
One kreb's cycle gives $$2FADH_2$$ molecules, it takes $$3$$ cycles to produce $$6FADH_2$$.
The only 5C compound in TCA cycle is:
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Oxalo-succinic acid
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Citric acid
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Succinic acid
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$$\alpha$$-ketoglutarate
Explanation
In TCA, the 5C compound is alpha-ketoglutarate only which is formed from isocitrate (6C) after decarboxylation.
So, the correct answer is option D.
Pyruvic acid is the end product of glycolysis. What are the three types of metabolic fates of pyruvic acid under aerobic and anaerobic conditions? Write in the space provided in the diagram.
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a) Adenosine triphosphate b)
Acetyl CoA
c)
Ethanol
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a)
Lactic acid
b)citric acid c) Flavin adenine dinucleotide
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a) Lactic acid b) Ethanol c) Acetyl CoA
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a) Nicotinamide adenine dinucleotide b)
Ethanol
c)
Lactic acid
Explanation
Lactic acid – Formed by oxidation of pyruvic acid in skeletal muscles under anaerobic conditions.
Ethanol – Formed by oxidation of pyruvic acid under anaerobic condition in yeasts.
Acetyl Co-A – Formed by the oxidation of pyruvic acid occurring within the mitochondria under aerobic conditions.
So. the correct answer is C
(a) Lactic acid (b) Ethanol (c) Acetyl CoA
What is produced by fermentation of agricultural waste?
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Ethanol
0%
Ethanol Amine
0%
Aminoacids
0%
Base
Rate of oxidation depends on amount of:
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Inorganic matters
0%
Organic matters
0%
Nutrients
0%
Water
Bacteria obtains useful energy by oxidation of certain elements, such as:
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Nutrients
0%
Sulphur and iron
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Calcium
0%
Phosphorous
Pyruvic acid +$$CoA+NAD^+\dfrac{Mg^{2+}}{X}\rightarrow Y+CO_2+NADH+H^+$$
In the following reaction, identify X and Y respectively :
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Water, Acetyl CoA
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Acetyl CoA, Pyruvate dehydrogenase
0%
Pyruvate dehydrogenase, Acetyl CoA
0%
Pyruvate dehydrogenase, Oxalo-acetic acid
Explanation
Enzyme pyruvate dehydrogenase brings about decarboxylation of pyruvic acid to form two molecules of Acetyl CoA which is further utilized in the Krebs cycle
So, the correct answer is '
Pyruvate dehydrogenase, Acetyl CoA'
How many ATP are formed in the oxidation of one molecule of glucose through the pentose phosphate path?
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0%
36
0%
38
0%
40
0%
8
Explanation
The pentose phosphate pathway is an alternative to Glycolysis. The end product Ribulose - 5- phosphate formed do not enter Krebs cycle. Instead they are used for the synthesis of nucleotides and other products. However, Fructose -6- phosphate formed may enter glycolysis, and thus Krebs cycle releasing 36 ATP.
So, the correct answer is '
36'
During the Krebs cycle, the first and the only five carbon-containing compounds formed is?
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Cis-aconitic acid
0%
Oxaloacetic acid
0%
-ketoglutaric acid
0%
Fumaric acid
Explanation
$$\alpha$$ -ketoglutaric acid if the first and the only five - Carbon containing compound, formed by the Oxidation and decarboxylation of iso -citrate in presence of enzyme isocitrate dehydrogenase and NAD$$^+$$.
So, the correct answer is '
$$\alpha$$ -ketoglutaric acid'
The net gain of energy in glycolysis is
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0%
12 ATP
0%
2 ATP
0%
4 ATP
0%
Zero ATP
Explanation
The net gain of ATP in Glycolysis is 2 ATP. During glycolysis a total of 4 ATP are formed. However, two ATP are utilized during the conversion of Glucose to Glucose -6- Phosphate and Fructose -1,6-bis phosphate. Therefore, net gain of ATP is 2.
So, the correct answer is '
2 ATP'
The value of $$Q_{10}$$
of respiration is –
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0%
Three
0%
Two
0%
Four
0%
Six
Explanation
The value of $$Q_{10}$$ determines the fractional change in rate of respiration or photosynthesis with every $$10^0$$C rise in temperature. The value of rate of respiration is almost or closer to 2 for all plant parts.
So, the correct answer is '
Two'
Which of the following options is correct with respect to steps in Krebs cycle?
Statement 1 - Succinic dehydrogenase converts succinic acid to fumaric acid.
Statement 2 - Malic acid forms succinic acid in presence of malate dehydrogenase.
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Statement 1 and statement 2 both are correct.
0%
Statement 1 is correct but statement 2 is incorrect.
0%
Statement 1 is incorrect but statement 2 is correct.
0%
Statement 1 and statement 2 is incorrect.
Explanation
Succinic dehydrogenase converts Succinic acid to fumaric acid by removing two Hydrogen ions that are transferred to FAD to form $$FADH_2$$. Malic acid undergoes dehydrogenation in presence of malate dehydrogenase to form Oxaloacetic acid and NADH. So, the correct answer is Statement 1 is correct but statement 2 is incorrect.
The number of substrate level phosphorylations in one turn of citric acid cycle is
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0%
One
0%
Two
0%
Three
0%
Zero
Explanation
During Krebs' or citric acid cycle, succinyl-CoA is acted upon by enzyme succinyl-CoA synthetase to form succinate (a 4C compound). The reaction releases sufficient energy to form ATP (in plants) or GTP (in animals) by substrate-level phosphorylation. Therefore, only one number of substrate-level phosphorylation in one turn of the citric acid cycle.
So, the correct answer is (A) - one.
How many ATPs are generated by the fermentation of one molecule of maltose?
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0%
2
0%
3
0%
6
0%
4
Explanation
Anaerobic respiration/anaerobic respiration yields 2 ATP from 1 molecule of glucose. Since maltose is formed of 2 glucose molecules, the ATP yield will be doubled. So 4 ATPs will be obtained.
So, the correct option is D.
If volume of $${CO_2}$$ given out during respiration is more than the volume of $${O_2}$$ used the respiratory substrate will be
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0%
Carbohydrate
0%
Fat
0%
Protein
0%
Organic fat
Explanation
The respiratory quotient (RQ) is the ratio of CO$$_{2}$$ produced to O$$_{2}$$ consumed while food is being metabolized.
RQ = CO$$_{2}$$ eliminated/O$$_{2}$$ consumed.
The respiratory quotient for carbohydrate metabolism can be demonstrated by the chemical equation for oxidation of glucose.
C$$_{6}$$H$$_{12}$$O$$_{6}$$ + 6 O$$_{2}$$ 6 CO$$_{2}$$+ 6 H$$_{2}$$O
Because the gas exchange in this reaction is equal, the respiratory quotient for carbohydrates is: RQ = 6 CO2 / 6 O2 = 1. Thus, option A is wrong.
The chemical composition of fats differs from that of carbohydrates in that fats contain considerably fewer oxygen atoms in proportion to atoms of carbon and hydrogen. The substrate utilization of palmitic acid is:
C$$_{16}$$H$$_{32}$$O$$_{2}$$ + 23 O$$_{2}$$ 16 CO$$_{2}$$ + 16 H$$_{2}$$O
Thus, the RQ for palmitic acid is approximately 0.7. RQ = 16 CO$$_{2}$$ / 23 O$$_{2}$$ = 0.696. Thus, option B is wrong.
The respiratory quotient for protein metabolism can be demonstrated by the chemical equation for oxidation of albumin:
C$$_{72}$$H$$_{11}$$2N$$_{18}$$O$$_{2}$$S + 77 O$$_{2}$$ 63 CO$$_{2}$$ + 38 H$$_{2}$$O + SO$$_{3}$$ + 9 CO(NH$$_{2}$$)2
The RQ for protein is approximately 0.8. RQ = 63 CO$$_{2}$$/ 77O$$_{2}$$ = 0.8. Thus, option C is wrong.
In case of organic fats, volume of CO$$_{2}$$ given out during respiration is more than the volume of O$$_{2}$$ used. Thus, option D is correct.
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