Lab 4
Lysosomes
A sac-like organelle containing digestive enzymes
Golgi apparatus
A system of membranes that modifies and packages proteins for export by the cell
When a cell is not dividing, the DNA is loosely spread throughout the nucleus in a threadlike form called
Chromatin
Nucleus
Encloses the chromatin
T/F The end product of mitosis is four genetically identical daughter nuclei
False
nucleolus
Found inside the nucleus and produces/ packages ribosomes
Inclusion
Glycogen granules and digested foreign materials
DNA replication occurs during
Interphase
Because these organelles are responsible for providing most of the ATP that the cell needs, they are often referred to as the "powerhouses" of the cell. They are the:
Mitochondria
What is the purpose of mitosis
Mitosis is a process where a single cell divides into two identical daughter cells (cell division). During mitosis one cell divides once to form two identical cells. The major purpose of mitosis is for growth and to replace worn out cells.
Division of the ___________ is referred to as mitosis
Nucleus
Mitochondria
Powerhouse of the cell, organelle that is the site of ATP (energy) production
The plasma membrane not only provides a protective boundary for the cell but also determines which substrates enter or exit the cell. We call this characteristic
Selective permeability
Chromosomes attach to the spindle fibers by undivided structures called
centromeres
The major structural difference between chromatin and chromosomes is that the latter are _________
coiled
Smooth Endoplasmic Reticulum
creates lipids or fat
cytokinesis is the division of the ____________
cytoplasm
____________ longest cell
(besides neurons) smooth muscle
Centrioles
forms basal bodies and helps direct mitotic spindle formation
plasma membrane
forms the external boundary of the cell
cytoskeleton
internal cellular network of rodlike structures
If a cell undergoes mitosis but not cytokinesis, the product is _.
multinucleated
____________ cells have an elongated shape (tapered at each end)
muscle
____________ cells are anucleate (without a nucleus)
red blood cells
____________ cells are circular
red blood cells
Ribosomes
site of protein synthesis
____________ cells have a flagellum for movement
sperm
____________ cells are close together
squamous epithelium
____________ cells are thin and flat with irregular borders
squamous epithelium
