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.
