Chapter 3 Flashcards
flat, tightly packed
epithelial cell
long, threadlike
nerve cell
thin, rod like
muscle cell
shapeless, clumped
adipose cell
guard skin and organ cells
epithelial cells
contract and pull body parts together
muscle cell
insulate and defend body cells
adipose cell
send impulses throughout body
nerve cell
During this phase, chromosomes condense into short rods.
phase 1, prophase
During this phase, chromosomes line up along the center of the cell.
phase 2, metaphase
During this phase, centromeres divide and chromatids separate.
phase 3, anaphase
During this phase, chromosomes cluster on the cell.
phase 4, telophase
The smallest structural unit of life.
cell
Thin, flattened, and tightly packed cells that replicate quickly and do not contain blood vessels.
epithelial cells
An organic substance composed of carbon, oxygen, and hydrogen.
lipid
The ability of an organism to maintain relatively stable internal conditions while external conditions change.
homeostasis
The selective process the body uses to allow or refuse the entry of bodily fluids into and out of cells.
selective permeability
The dense center of an atom; composed of protons and neutrons.
nucleus
The fluid located between the nucleus and the surface membrane of a cell.
cytoplasm
The outer boundary of the cell through which the cell interacts with the external environment.
cell membrane
The process of a single cell splitting into two daughter cells, each with genetic material that is identical to the original cell.
cell division
A specialized portion of a cell that performs a specific function.
organelle
A double-walled membrane network inside a cytoplasm.
endoplasmic reticulum (ER)
A small, round cytoplasmic organelle in which protein synthesis occurs.
ribosome
A
phospholipid bilayer
B
membrane channel
C
peripheral membrane