What Process Allows Cytoplasmic NADH to Be Reoxidized by O₂

question 26

Multiple Choice

What process allows cytoplasmic NADH to be reoxidized by O₂ using the electron-transport system?

• A) glycerol 3-phosphate shuttle
• B) cytochrome c shuttle
• C) malate-aspartate shuttle
• D) quinone shuttle
• E) glycerol 3-phosphate shuttle and malate-aspartate shuttle

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Definitions:

Testes

The male reproductive glands responsible for producing sperm and male sex hormones, particularly testosterone.

Scrotum

The sac of skin housing the testicles, regulating their temperature for sperm production.

Spermatic Cord

A bundle of fibers and tissues in males that includes the vas deferens, blood vessels, nerves, and lymphatics, extending from the abdomen to the testicle.

Ejaculatory Duct

A tube through which semen enters the urethra during ejaculation, formed by the fusion of the vas deferens and the seminal vesicle.