Slides in this set
· Ribosomes are found in many places
around the cell. You might find them
floating in the cytoplasm. Those
floating ribosomes make proteins that
will be used inside of the cell.
· Other ribosomes are found on the
endoplasmic reticulum. Which looks
bumpy under a microscope. Those
attached ribosomes make proteins
that will be used inside the cell and
proteins made for export out of the
· A ribosome is not just one piece.
There are two pieces or subunits.
Scientists named them 60-S (large)
and 40-S (small). The mRNA is sent
into the cell and the ribosomes. When
it is time to make the protein, the two
subunits come together and combine
with the mRNA. The subunits lock onto
the mRNA and start the protein
· The mRNA (which is made in the nucleus)
combines with the ribosome subunits.
· Another nucleic acid lives in the cell - tRNA,
which stands for transfer RNA. tRNA is bonded
to the amino acids floating around the cell.
· With the mRNA offering instructions, the
ribosome connects to a tRNA and pulls off one
· Slowly the ribosome makes a long amino acid
chain that will be part of a larger protein.…read more