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human bio
Division and differentiation in human cells
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Cards (20)
plasma membrane- selectively
permeable
, controls
entry
+
exit
of substances
cytoplasm-
fluid
containing
proteins
,
fats
,
oils
and
sugars
, site of
chemical
reactions
nucleus- controls
cellular activities
, contains
DNA
,
blueprint
for manufacture of
protein
nuclear membrane- membrane made of
fats
+
protein
, surrounds
nucleus
pore in nuclear membrane- allows
mRNA
to exit
nucleus
mitochondria- site of
aerobic respiration
,
energy
released during
breakdown
of
glucose
ribosome- site of
protein
synthesis, found of
endoplasmic reticulum
and in
cytoplasm
lysosome- contains
enzymes
, digest
unwanted
materials and the cell on
death
In a developing embryo, tissues such as muscle
and nerve are produced by?
C.
somatic
cells dividing by
mitosis
Which of the following is most likely to identify correctly cell types P and Q?
B
In a developing embryo, tissues such as muscle
and nerve are produced by
somatic cells
dividing by
mitosis
the
nucleus
is the site of
mRNA synthesis
and
controls cell activities
and
contains DNA
mitochondria
is the site of
aerobic respiration
ribosomes are the site of
protein synthesis
plasma membrane
controls the
movement
of
materials
into and out of the cell
the
nuclear membrane
is composed of
fats
and
protein
which surrounds the
nucleus
pore
in the nuclear membrane is a hole in the
nuclear
membrane
which allows
mRNA
to
exit
the
nucleus
ribosome
is found on structures called the
endoplasmic
reticulum
and in the
cytoplasm
lysosomes
contain
enzymes
which
digest unwanted material
and the
cell
itself on
death
Describe what happens during differentiation.
Cells
become
specialised
/are
given specific functions
OR
Genes
are being
expressed.