Fertilization and Implantation

Question 1

Fertilization

Answer 1

The process in which the nuclei of a sperm cell and an egg cell fuse, resulting in the formation of a diploid zygote.

Question 2

Zygote

Answer 2

A diploid cell formed by the fusion of a sperm cell’s nucleus and an egg cell’s nucleus during fertilization.

Question 3

Mitosis

Answer 3

The process of cell division in which a single cell divides to produce two genetically identical daughter cells.

Question 4

Morula

Answer 4

A solid ball of cells resulting from multiple rounds of mitosis after fertilization.

Question 5

Blastocyst

Answer 5

A hollow ball of cells that forms from the morula and consists of an outer layer called the trophoblast and inner cells that will develop into internal organs.

Question 6

Trophoblast

Answer 6

The outer layer of cells in a blastocyst, which will develop into external tissues like the skin and nervous system.

Question 7

Implantation

Answer 7

The process by which the blastocyst attaches to the endometrium of the uterus and begins to develop into an embryo.

Question 8

Endometrium

Answer 8

The inner lining of the uterus that thickens during the menstrual cycle and provides a site for embryo implantation.

Question 9

Gametes

Answer 9

Reproductive cells, including sperm cells and egg cells, that have half the normal number of chromosomes (haploid).

Question 10

Diploid

Answer 10

A cell containing the full complement of chromosomes, formed by the fusion of two haploid gametes during fertilization.