June 2012 Flashcards
1
Q
Explain how increase in intensity of exercise leads to an increased heart rate
A
Oxygen detected by chemoreceptors
Medulla involved
More impulses along sympathetic nerve
2
Q
Explain the purpose of attaching the jellyfish fluorescent light gene
A
Act as marker
So can see if other gene has been taken up
3
Q
Explain why is it important to still report the results from failed attempts to insert genes into animals
A
Saves time
As same work not repeated
Methods are improved
4
Q
What is the word to describe the conversion of glycogen to glucose
A
Glycogenolysis
5
Q
In muscle contraction, what is ATP needed for?
A
Form cross bridges between actin and myosin
Movement of myosin heads
Detachment of myosin heads, so myosin heads move back to original position
