The entry of the sperm nucleus is facilitated by C) acrosome reaction. The acrosome is the head-like structure at the front of the sperm cell. This contains digestive enzymes that break down the outer membrane of the egg cell, allowing the nucleus of the sperm cell to enter and fuse with the nucleus of the egg cell.
<u>Answer</u>:
Unequal hearting of earth causes movement of masses of sea water is known as <u>sea breeze</u>.
<u>Explanation</u>:
The shape of the Earth is curved. So, weather change, water and climatic conditions cause uneven heating of the earth. Unequal heating of a surface means a part of a surface would be cooler than the other part. This causes the difference in air temperature and air pressure.
This causes air to move the lower pressure side. The air from the sea is cooler and it moves towards the land. This is called sea breeze. We can also refer to it as winds.
The meant by the description "antiparallel" regarding the two strands that make up the DNA double helix , <u>the 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand</u>
Chromosomal DNA would be composed of two DNA polymers that together form a double helix, which is a three-dimensional (3D) structure. When the DNA strands are antiparallel, which means the 3' and 5' ends of each DNA strand are parallel to one another.
Two strands of something like the DNA molecule are joined through hydrogen bonds.
Hence, the correct answer will be option (B)
To learn more about antiparallel , here
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Diego. Correct me if wrong