This preview shows page 1. Sign up to view the full content.
Unformatted text preview: is
(smooth ER), packaging and secretion (Golgi), and
isolation of enzymes in compartments for cellular
defense (peroxisomes, lysosomes). Membranes
bind enzymes in a reaction sequence (as in the
respiratory chain) or keep them together in a region
where reactions occur (Krebs cycle enzymes). The
components of membranes are also important in
cellular recognition and communication. (e) Name: Golgi apparatus
Location: In cytoplasm associated with the smooth
endoplasmic reticulum, often close to the nucleus.
Function: Final modification of proteins and lipids.
Sorting and storage for use in the cell or packaging
molecules for export.
Visible under LM: Not with most standard school LM,
but may be visible using high quality, high power LM.
(f) Name: Nucleus
Location: Discrete organelle, position is variable.
Function: The control center of the cell; the site of the
nuclear material (DNA).
Visible under LM: Yes.
(g) Name: Endoplasmic reticulum (in this case, rough ER)
Location: Penetrates the whole cytoplasm
Function: Involved in the transport of materials (e.g.
proteins) within the cell and between the cell and its
Visible under LM: No
Biozone International 2009 Photocopying Prohibited 5
(h) Name: Lysosome and vacuole (given)
Location: Free in cytoplasm.
Function: Ingests and destroys foreign material. Able
to digest the cell itself under some circumstances.
Visible under LM: No
Vacuole (vacuole in an animal cell is shown).
Location: In cytoplasm.
Function: In animal cells, vacuoles are smaller and
more numerous than in plant cells, and are involved in
storage (of water, wastes, and soluble pigments).
Visible under LM: No in animal cells but yes in plant
(i) (j) Name: Cilia and flagella (given)
Location: Anchored in the cell membrane and
extending outside the cell.
Visible under LM: Variably (depends on magnification
and preparation/fixation of material). 6. (a) Hypotonic
(b) Fluid replacements must induce the movement
of water in...
View Full Document
- Winter '13