B7 - Hormones (Plant And Animal) Flashcards
Were is insulin produced?
Pancreas
What is a hormone?
A chemical messenger that causes a response in target organs
What is the role of oestrogen in the menstrual cycle?
To inhibit FSH and to stimulate the production of LH
What is meant by the term ‘homeostasis’
The control of internal body conditions
What is the correct negative feedback mechanism if thyroxine levels in the blood decrease
The pituitary gland secretes TSH
In what organ is glycogen converted into glucose as a result of adrenaline
Liver
What stimulates the adrenal gland to release adrenaline?
The brain by nervous impulses
Around day 14 of the cycle, an egg is released from the ovaries of the female. This is known as ________________ .
Ovulation
The cycle begins when the lining of the _________________ breaks away. This is known as menstruation.
Uterus
Which hormone thickens the lining of the uterus?
Oestrogen
Where are auxins made in the plant?
In the growing tip of a stem or root
Which side of a stem contains more auxin?
The shaded side
Which hormone can be used to produce seedless fruits?
Giberellins
What affect does auxin have on the tips of the roots?
Inhibit cell elongation
What hormone is used to cause bananas to ripen after transportation?
Ethene
