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