Cells Flashcards
adaptations
The structure and features of a cell that make it suited to carrying out a particular job.
cell
The smallest functional unit in an organism - the building block of life.
cell membrane
The cell component that controls which substances can move into and out of the cell.
cell wall
The plant cell component that surrounds the cell, providing support.
chloroplast
The plant cell component where photosynthesis takes place.
cytoplasm
A ‘jelly-like’ substance found in cells, where all the chemical reactions take place.
mitochondria
The cell component where respiration takes place.
puberty
The physical changes that take place during adolescence.
semen
Fluid containing sperm.
sexual intercourse
The process where the penis releases semen into the vagina.
ejaculation
When semen is released from the penis.
fertilisation
The process where the nucleus of a sperm cell joins with the nucleus of an egg cell.
gametes
Reproductive cells. The male gamete is a sperm cell and the female gamete is an egg cell.
