Introduction to Cellular Respiration

$\text{C}$‍ in ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$‍ gains electrons to form ${\text{CO}}_2$‍. Hence, $\text{C}$‍ is oxidized.

$\text{H}$‍ in ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$‍ loses electrons and gets oxidized.

$\text{C}$‍ in ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$‍ loses electrons to form ${\text{CO}}_2$‍, i.e., $\text{C}$‍ gets oxidized.

Both $\text{C}$‍ and $\text{H}$‍ in ${\text{C}}_6{\text{H}}_{12}{\text{O}}_6$‍ lose electrons and get oxidized.