Specialised cells
What is the function of a sperm cell?
To fertilise the egg
to transfer DNA
Where are ova (eggs) stored in the female reproductive system?
Ovaries
what is the average length of a menstrual cycle?
28 days
do plants contain both male and female reproductive systems?
yes
what are the three cell theories?
1. all living things are composed of cells
2. the cell is the basic unit of life
3. all cells come from preexisting cells.
what is the function of a neuron cell?
to send and receive electrical nerve signals along the nervous system
Where are sperm stored in the male reproductive system?
Testis
what are the 4 hormones responsible for the menstrual cycle ?
FSH
LH
Progesterone
Oestrogen
what is the ovary responsible for in a plant?
contains the ovules (eggs)
what is spontaneous generation?
the supposed production of living organisms from non living matter. eg maggots from rotting fruit.
what is the function of a plant cell?
to carry out photosynthesis to produce energy and allow the plant to grow
What is the function of the uterus?
provide protection to a growing baby until birth
What hormone is responsible for stimulating the release of the egg at day 14?
LH
what is the anther responsible for in a plant?
pollen is produced here. sperm are stored in the pollen grains
what tenant did Robert hooke contribute to?
1
what are the three features of a sperm cell?
nucleus
mitochondria
flagellated tail
what is the function of the prostate gland?
to provide nutrients to the sperm on their journey to find the ova
What hormone is responsible for causing the egg to develop in one of the ovaries
FSH
what is the function of a style in the plant reproductive system?
connects the stigma to the ovary
what tenant did Robert Remark contribute to?
3
what are the three features of a neuron and their functions?
Dendrites - receive the signal from another neuron
myelin sheath - protects the axon, stops 'cross-wiring'
axon terminals - sends the signal to the dendrites of another neuron
what is the function of the oviducts (fallopian tubes)?
What is the function of Oestrogen during the menstrual cycle?
Switches off FSH and switches on LH
causes the lining of the uterus to thicken and grow
If a plant lost a structure of its reproductive system, will this affect its ability to reproduce? and why?
yes. the loss of one or more structures will affect the plants' ability to reproduce. for example, the anther, which is held up by filament, is where pollen is stored. if the anther was removed, there would be no pollen produces. as a result, the plants would not be able to continue being pollinated and would die out.
what scientist discovered that cells are the basic building block of all living things?
Schwann