Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
11 Cards in this Set
- Front
- Back
|
Body Cells |
46 Chromosomes (23 types, in pairs) in their nuclei Cells with pairs of chromosomes are diploid (2N) |
|
|
Sex Cells |
Have only 23 Chromosomes (1 of each type, not paired) on their nuclei are haploid ("N') |
|
|
Fertilization |
Haploid (N) sperm and a haploid (N) egg combine to form a diploid (2N) zygote restoring the chromosome number to 46 (23 types, in pair) |
|
|
Mitosis |
Duplication Division in which a cell makes an exact copy of itself, 46 chromosome are reproduced Used for growth and repair of tissue by body cells(NOT sex cells) |
|
|
Meiosis |
Reduction Division in which a cell reproduces itself but halves its number of chromosomes (Dow to one of each pair) Cells are not exact copies of the parents cell, genetically different Used to from the sex cells- eggs and sperm |
|
|
Scrotum |
Sacs that hold the testes Helps regulate testicular temperature |
|
|
Testes |
Paired organs that produce spam and male sex hormones Composed of seminiferous tubules where sperm and produced and interstitial cells which produce sex hormone |
|
|
Epididymis |
Near testes, sperm mature and stored here |
|
|
Sperm Anatomy : Head |
Covered by an acrosome cap which stores enzymes needed to penetrate eggs |
|
|
Sperm Anatomy : Middle area |
Contains mitochondria to make ATP need to move tail |
|
|
Sperm Anatomy : Tail |
Flagella provides movement |
