The phase of the cell cycle that occupies most of a cells life
interphase
What occurs after cytokinesis is completed?
• G1
What is correct sequence of cell cycle
• G1, s, g2, mitosis, cytokinesis
Cells that are not dividing remain in the
• g1
What occurs in s phase
• Dna replication
The first 3 phases of the cell cycle are known as
• interphase
Mitosis is the process by which
• Nucleus divides
Mitosis forms cells that are
• Diploid• identical
Normal cells become cancer cells when
• Cells do not respond to checkpoints
How many chromosomes are in the body cells of an organism that has a haploid number of 10
• 20
Somatic cells are
• Body cells• diploid
Gametes are
• Sex cells• haploid
Crossing over occurs during
• Meiosis• Prophase 1
What provides new genetic combinations?
• Random fertilization• Random alignment• Crossing over
DNA is in the form of _____ when the cell is not dividing
• chromatin
Harmful cancer
• malignant
Checkpoints are checking for:
• Is cell big enough• Are spindle fibers attached to chromosomes
correctly• Is DNA copied correctly
Harmless cancers
• benign
During what phase does the cell prepare for division
• G2
The failure of the chromosomes to separate during division is called:
• Nondisjunction
Signs of Cancer?
• Caution• ABCD
What phase of mitosis do chromosomes become visible
• prophase
What is the correct sequence of events in Mitosis
• PMAT
How many pairs of chromosomes are present in body cells?
• 23
Differentiate between mitosis and meiosis
• Crossing over• Two divisions• Haploid• 4 cells• Produces gametes (sperm/egg)
Growth of new blood vessels to support tumors is called _________.
• angiogenesis
What is trisomy 21?
• Down Syndrome
What is monosomy X?
• Turners Syndrome
What is XXY
• Klinefelter syndrome
What two cells are found in the testicles?
• Leydig• Sertoli
Identify the 3 glands that associate with the male reproductive system?
• Bulbourethral (Cowpers)• Seminal vesicle• Prostate
What is the pathway that sperm travel through the male reproductive tract?
• Semineferous tubules• Epididymis• Vas deferens• urethra
Identify the 3 type of spongy tissue in the penis.
• Corporus cavernosus• Corporus spongiosum• Spongy urethra
3 layers of uterus
• Mucousa• Muscularis• serosa
Function of?
• Vagina • Ovary• Fallopian tube• uterus
Sperm leave the body at ___ feet per second.
• 200
Name of the head of the sperm?
• acrosome
Outer portion of ovary
• cortex
Leading cause of death from cancer in men
• prostate
Which hormone acts on spermatogenesi?
• FSH – follicle stimulating hormone
Identify 2 muscle associated with testis and scrotum
• Dartos• cremaster
Which cells in the testicles supports sperm development and secretes FSH
• sertoli
Which analogous structure?
• Vagina penis• Labia minora• Clitoris• Ovaries