Answer: Option C. -> $C_6{H}_{12}{O}_6+6O_2\to 6C{O}_2+6H_{2}O+energy$
:
C
Aerobic cellular respiration is the breakdown of a glucose molecule in the presence of oxygen to form carbon dioxide, water and energy. The energy is produced in the form of ATP molecules.
Therefore this equation is the true representation of aerobic cellular respiration.

Answer: Option D. -> Broken into acetyl groups
:
D
Fatty acids enter the Kreb's cycle as Acetyl CoA molecules.

Answer: Option B. -> Chemiosmosis
:
B
In aerobic cellular respiration, ATP production through chemiosmotic synthesis is linked to the proton gradient generated by the Electron transport system. 30-32 molecules of ATP are generated by chemiosmosis during breakdown of one molecule of glucose. Whereas only about 8 molecules are formed through substrate level phosphorylation, that is transfer of a high energy phosphate group from a substrate to ADP. 

Answer: Option B. -> Twice
:
B

For one glucose molecules, there will be two rounds of Krebs cycle. This is because two molecules of Pyruvic acid are formed from one molecule of glucose during Glycolysis.    

Answer: Option C. -> 200 ATP and 40 $C{O}_2$
:
C
Aerobic respiration released 38 molecules of ATP and 6 molecules of $C{O}_2$ for every Glucose molecule. Therefore if 5 molecules are respired, then it forms $38\times 5=190$
ATPs and $6\times 5=30C{O}_2$ molecules.
During anaerobic respiration one molecule of glucose releases 2 molecules of ATP and 2 molecules of $C{O}_2$ for one glucose molecule. That is a total of 10 ATPs and 10 $C{O}_2$ molecules. Therefore together we get a total of 190 + 10 = 200 ATP molecules and 30 + 10 = 40 $C{O}_2$ molecules.

Answer: Option C. -> Glycolysis – Krebs cycle – Electron transport chain
:
C

Cellular Respiration is the process in which energy stored in a glucose molecule is released by oxidation. Hydrogen atoms are lost by glucose and gained by oxygen. Cellular respiration begins with glycolysis in the cytoplasm, the glycolytic product then enters the Kreb's cycle and the electrons produced by the breakdown of these products is stored in an electron acceptor as NADH. The NADH formed is then channelled into the ETC to produce a chemiosmotic gradient, that drives the formation of ATP.
Therefore the correct order is Glycolysis ----------> Kreb's cycle ------> ETC

Answer: Option A. -> Both assertion and reason are true and reason is the correct explanation for assertion
:
A

Baker’s yeast (Saccharomyces Cerivisiae) is added to flour during kneading. Yeast secreted enzymes like amylase (changes some starch to maltase), maltose (maltose to glucose) and zymase (glucose to ethyl alcohol and carbon dioxide). The dough swells up or leavens. Leavened dough is baked and both alcohol and carbon dioxide evaporate. The bread becomes soft and porous. 

Answer: Option A. -> Human muscles
:
A

Lactic acid is formed in fermentation. Lactic acid can also be formed in human muscles during anaerobic respiration. 

Answer: Option B. -> Flavoproteins and Cytochromes
:
B
Flavoproteins & cytochromes are enzymes of the ETC complexes, these complexes are found in the inner mitochondrial membrane. 
Enolase and hexokinase are glycolytic enzymes and are therefore found in the cytoplasm, whereas catalase is an enzyme that breaks down hydrogen peroxide and is found in an organelle called peroxisome. Zymase is an enzyme involved in alcohol fermentation. Citrate synthetase is an enzyme of the Kreb's cycle and is found in the mitochondrial matrix.

Answer: Option C. -> ATP
:
C
ATP does not take part in e⁻ transfer. The energy released by the electron transport chain is stored in ATP. Whereas CoQ, Fe-S, $NA{D}^{+}$ are all part of the electron transport chain and take part in redox reactions.