Unknown Knowledge Flashcards
Name the type of mutation that occurs in reproductive cells and will be passed onto offspring
Germline
What are mutagens and what are some types?
Physical or chemical agent that causes mutates genetic material
- UV light
- Xray
- Nuclear radiation
Two structural differences between mDNA and nDNA (not Uracil)?
- Small circular molecules not long chains
- Only 1 chromosome
- Only 37 genes
When in the ovarian cycle is the corpus luteum active?
secretion days 16-20
The sequence of events in childbirth?
- Oxytocin secreted
- Contraction of uterus
- Dilation of the cervix
- Water breaking
- Crowning
- Delivery of the baby
- Expulsion of placenta and other embryonic related materials
Umbilical vein?
Carries oxygenated blood from placenta to fetus (towards foetus heart) away from mother
After conception when are the main organs established by?
By the end of week 8
What hormone stimulates the secretion of milk in the breasts?
Prolactin
What is the role of histamine in the inflammatory response?
Increase blood flow to area
What did the Human Genome Project find out?
The entire sequence of bases in human DNA has been established
Mitochondria function?
Powerhouse of cell
Site of Aerobic respiration
contains mDNA
create energy for whole cell
Cell membrane function?
Protect cell from extracellular material
Has receptors
allow substances to move in/out of cell
Nucleus function
holds DNA
translation occurs here
controls cellular functions
Why are cells so small in size?
To have large surface area to volume ratio
If cells are too large, not enough surface area to effectively absorb nutrients and remove waste produced
Three types of diet changes for pregnanr woman
- More calcium intake
- Avoid food with listeriois
- More folic acid consumption
