Question Video: Describing the Contents of the Head of Spermatozoa | Nagwa Question Video: Describing the Contents of the Head of Spermatozoa | Nagwa

Question Video: Describing the Contents of the Head of Spermatozoa Biology • Third Year of Secondary School

Join Nagwa Classes

Attend live Biology sessions on Nagwa Classes to learn more about this topic from an expert teacher!

What is present in the head of spermatozoa?

01:11

Video Transcript

What is present in the head of spermatozoa? (A) 23 pairs of chromosomes, (B) hydrolytic enzymes and mitochondria, (C) DNA and hydrolytic enzymes, (D) X and Y chromosomes, (E) DNA and mitochondria.

Here’s a diagram of a spermatozoa. The sperm’s tail gives it its mobility so it can move around. The midpiece contains many mitochondria. These allow for high levels of cellular respiration to release energy and power the movement of the tail. The head region contains two important parts. The nucleus contains the sperm’s DNA. It’s haploid and contains 23 chromosomes with either an X or a Y chromosome. The acrosome contains hydrolytic enzymes that allow the sperm to break down the outer membrane of the egg cell. This is needed to penetrate the egg cell during fertilization.

Therefore, the contents of the head of the spermatozoa is given by answer choice (C), DNA and hydrolytic enzymes.

Join Nagwa Classes

Attend live sessions on Nagwa Classes to boost your learning with guidance and advice from an expert teacher!

  • Interactive Sessions
  • Chat & Messaging
  • Realistic Exam Questions

Nagwa uses cookies to ensure you get the best experience on our website. Learn more about our Privacy Policy