Maximum amount of energy/$ATP$ is liberated on the oxidation of:

Respiratory pathway is believed to be a catabolic pathway. However,the nature of the $TCA$ cycle is amphibolic. Explain.

Choose the incorrect sentence$(s)$ regarding the amphibolic pathway.
$(1)$ Carbohydrates are generally used as substrates for respiration.
$(2)$ Fatty acids can first be degraded into acetyl $CoA$,which enters the respiratory pathway.
$(3)$ In the case of proteins,they are first broken down into amino acids,which are later converted into pyruvic acid and enter the respiratory pathway.
$(4)$ The respiratory pathway is involved in both anabolism and catabolism.
$(5)$ Glycerol would enter the pathway after being converted to $PGAL$.

$\beta$-oxidation occurs in .........

How are photosynthesis and respiration related to each other?

$A-$ Glycolysis involves only catabolic process.
$R-$ Amphibolic pathway involves both catabolic and anabolic processes.