When the bond between the 1st and 2nd phosphate is formed
When the bond between the adenine and ribose is broken
When the bond between the 2nd and 3rd phoshate is broken
When the bond between the adenine and glucose is formed
masalah 3
pilihan
How can ADP can be transformed into ATP?
Removing energy and a phosphate group
Adding energy and another ribose
Adding energy and a phosphate group
Removing adenine
masalah 4
pilihan
The greatest number of ATP molecules is produced in ...
glycolysis
chemiosmosis
electron transport chain
Krebs cycle
masalah 5
pilihan
Which of the following about cellular respiration is FALSE?
ATP is produced in both glycolysis and pyruvate oxidation
Pyruvate is produced in cytoplasm and transferred into mitochondria to be oxidised
For each electron transferred from NADH to oxygen through electron transport chain, 3 ATP molecules are produced
Substrate level phosphorylation does not involved ATP synthase enzyme
masalah 6
pilihan
Diagram shows the Krebs cycle.
Which of the following stages are NADH produced?
I, II and IV
I and II
II and IV
I, III and IV
masalah 7
pilihan
What is the function of molecular oxygen in cellular respiration?
Causes breakdown of citric acid
Combine with glucose to produce carbon dioxide
React with H+ from organic molecules to form water
Combine with carbon from organic molecules to form carbon dioxide
masalah 8
pilihan
Which pathway for aerobic cellular respiration is located in the cytoplasm of the cell?
Glycolysis
Krebs cycle
Electron transport chain
Calvin cycle
masalah 9
pilihan
Which of the following pathways will result in carbon dioxide and NADH being released but not ATP?
Glycolysis
Krebs cycle
Electron transport chain
Pyruvate oxidation
masalah 10
pilihan
Which molecule will combine with the four-carbon oxaloacetate in the Krebs cycle to form six-carbon citrate?
NADH
Acetyl CoA
Pyruvate
Isocitrate
masalah 11
pilihan
Choose the WRONG statement about cellular respiration.
Glycolysis causes 6C glucose to split into two 3C pyruvate molecules
Krebs cycle involves decarboxylation and oxidation.
Krebs cycle and electron transport chain occur in the cytoplasm
During glycolysis, substrate level phosphorylation occurs twice
masalah 12
pilihan
In chemiosmosis, ATP is produced as H+ pass through ...
outer mitochondrial membrane
ATP synthase
ATP decarboxylase
a series of electron carriers
masalah 13
pilihan
Which of the following does not occur during the process shown below?
Production of acetyl coenzyme A
Formation of ATP
Splitting of ATP molecules
Production of NADH
masalah 14
pilihan
The following reaction occurs in cells during cellular respiration.
Pyruvate → Acetyl CoA
Which of the following statement is TRUE about the above reaction?
Takes place in the intermembrane space of the mitochondria
Oxygen is required
3H+ are released and accepted by NAD+
Carbon dioxide is released
masalah 15
pilihan
The energy released by the electron transport chain produces ATP by ...
photophosphorylation
substrate-level phosphorylation
oxidative phosphorylation
redox reaction
masalah 16
pilihan
Which of the following is NOT a feature of oxidative phosphorylation?
Direct transfer of phosphate from a substrate molecule to ADP
An electrochemical gradient across the inner mitochondrial membrane
Involved membrane bound ATP synthase
Produces proton-motive force
masalah 17
pilihan
Which of the following is the CORRECT sequence of processes in the oxidation of glucose?
Krebs cycle – Glycolysis – Electron transport chain
Glycolysis – Krebs cycle – Electron transport chain
Electron transport chain – Krebs cycle - Glycolysis
Krebs cycle – Electron transport chain - Glycolysis
masalah 18
pilihan
Figure shows part of the Krebs cycle.
If two molecules of α-ketoglutarate are changed to fumarate in the pathway above, the total ATP formed during aerobic respiration at this stage is ...
1
6
10
12
masalah 19
pilihan
Substrate-level phosphorylation takes place in ...
electron transport chain and oxidative phosphorylation
glycolysis and electron transport chain
glycolysis and Krebs cycle
pyruvate oxidation and Krebs cycle
masalah 20
pilihan
Which of the following statements about the generation of ATP in the electron transport chain is CORRECT?
The generation of ATP from ADP coupled to electron transfer occurs by substrate level phosphorylation as in glycolysis
Electron transport generates a proton gradient across the outer mitochondrial membrane
ATP synthase generation of ATP involves a rotating structure outside the inner mitochondrial membrane
ATP synthase generation of ATP involves a rotating structure inside the inner mitochondrial membrane