Unknown Knowledge

Question 1

Name the type of mutation that occurs in reproductive cells and will be passed onto offspring

Answer 1

Germline

Question 2

What are mutagens and what are some types?

Answer 2

Physical or chemical agent that causes mutates genetic material

• UV light
• Xray
• Nuclear radiation

Question 3

Two structural differences between mDNA and nDNA (not Uracil)?

Answer 3

• Small circular molecules not long chains
• Only 1 chromosome
• Only 37 genes

Question 4

When in the ovarian cycle is the corpus luteum active?

Answer 4

secretion days 16-20

Question 5

The sequence of events in childbirth?

Answer 5

1. Oxytocin secreted
2. Contraction of uterus
3. Dilation of the cervix
4. Water breaking
5. Crowning
6. Delivery of the baby
7. Expulsion of placenta and other embryonic related materials

Question 6

Umbilical vein?

Answer 6

Carries oxygenated blood from placenta to fetus (towards foetus heart) away from mother

Question 7

After conception when are the main organs established by?

Answer 7

By the end of week 8

Question 8

What hormone stimulates the secretion of milk in the breasts?

Answer 8

Prolactin

Question 9

What is the role of histamine in the inflammatory response?

Answer 9

Increase blood flow to area

Question 10

What did the Human Genome Project find out?

Answer 10

The entire sequence of bases in human DNA has been established

Question 11

Mitochondria function?

Answer 11

Powerhouse of cell
Site of Aerobic respiration
contains mDNA
create energy for whole cell

Question 12

Cell membrane function?

Answer 12

Protect cell from extracellular material
Has receptors
allow substances to move in/out of cell

Question 13

Nucleus function

Answer 13

holds DNA
translation occurs here
controls cellular functions

Question 14

Why are cells so small in size?

Answer 14

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

Question 15

Three types of diet changes for pregnanr woman

Answer 15

• More calcium intake
• Avoid food with listeriois
• More folic acid consumption

Question 16

Chromosome that determines wether an individual is male or female?

Answer 16

Sex chromosome (n 23) xx and xy

Question 17

What is a performance enhancing drug?

Answer 17

Any substance that improves and increases physical ability

Question 18

What can you not say when saying if a hypothesis was right or not

Answer 18

Cannot say proved instead say supported or not supported

Question 19

Is it possible for man with vasectomy pass on HIV to his partner

Answer 19

Yes beacause HIV is a virus passed though bodily fluid (not sperm) so it can still be passed on

Question 20

Role of diaphragm in inspiration

Answer 20

Diaphragm contracts
Lower pressure in lung and higher pressure in outside air
Air moves from high to low
Increased volume in thoracic volume