Area 1 Humans cells Flashcards
what is a somatic cell
A somatic cell is any cell in the body other than cells involved in reproduction
What is a somatic cell
A stomatic cell is any cell in the body other than the cells used in reproduction
how do somatic cells divide by
Stomatic cells divide by mitosis
what are germline cells
geremline are cells used in reproduction
how do germline cells divide
mitosis and meiosis
when germline cells divide by mitosis they produce
more germline cells
when germline cells divide my meiosis they produce
produce haploid gametes
what are the two process of meiosis
1 separates homogolus pairs chromosomes
2 separating pairs of chromatids
what is cellular differentiation
the process by which a cel expresses certain genes to produce proteins characteristics for that type of cell
what does cellular differentiation allow
It allows a cell to carry out specialised functions
Are stem cells somatic
yes
what can embryonic stem cell do
embryonic stem cell are pluripotent and can differiante into all cell types that make up a human
What are the genes like in a embryonic stem cell
All the genes in a embryonic stem cell can be switched off so they can differnciate in to any cell type.
what can tissue stem cell do
They are involved in growth and repair they are multipoint and can diferencite into all types of cells found in a particular tissue type
therapeutic uses of stem cells
skin grafts and corneal repair stem cells can also be used for new drug testing
stem cells ethical issuesxxxx
Beacsue it involves the destruction of an early embryo e which could create human life
who do cancer cells work
They divide excessively because they do nor respond to regulatory signals uncontrollable cell division result sin a mass of abnormal tissues called a tumor
secondary tumour
the tumors may fail to attach to each other spreading through the body and forming secondary tumours.
what do somatic cells divide by
They decide by mitioso
what are gremline cells
gremline cells are cells used in
