the organelle organ show. you will recall that cells are the third tier in the level of complexity;...
TRANSCRIPT
You will recall that cells are the third tier in the level of complexity; between
molecules and ????????
tissues
Within most cells these are membrane bound, that is they have a membrane surrounding them and
composed of membranes.
Outside the nucleus, inside the cell
membrane, the liquid portion (rich in
proteins) that allows dissolved molecules to move within the cell.
A spherical structure found either free
floating in cytosol or attached to ER. These structures are the site of protein
synthesis.
This has no ribosomes and serves to package the proteins produced in the RER. Proteins are collected within a bubble formed by the
membrane
This is a membrane system located close to the plasma membrane where proteins are modified and leave within a vesicle
formed by membranes.
The main site of energy release inside the cell. Many enzymes are located within to help release
energy from food molecules. The folded inner membranes assist in ATP production.
Some examples of plastids are: chloroplasts - chlorophyll.chromoplasts - flowers and fruits.leucoplasts - starch formed from sugars here. What colour are they?
Cell’s storage containers. These are often large in plant cells and contain
mostly water. They may also contain food, pigments and salt.
These are structures that contain enzymes used to digest old cell structures. In
animal cells these may aid in digesting food particles in a food
vacuole.
A system of microtubules and proteins that acts like a scaffolding structure within the
cell. It can give a cell shape and allow for the passage of organelles.
Common to animal cells, these structures are used during cellular reproduction, pulling the chromosomes to
daughter cells during Anaphase and Telophase.
A barrier around the cell that allows only certain molecules in or out of the cell. It
is composed of phospholipids with protein molecules embedded within.
By definition, an organ system is an organ or group of organs that are
comprised of specific tissue types. These tissues are usually coordinated so that they can perform specific functions for the whole animal. Specific tissue types can be created by cells that produce the
same proteins and perform the same functions. (muscle cells have special proteins and nerve cells have special
lipids, both cell types have specific and different functions)
Our bodies are composed of four general types of
tissues, they are: Epithelial tissues, Connective tissues, Nerve tissue and Muscle tissue.
There are three general types of this tissue and they may be found in the gut, circulatory system and attached to the skeletal system.
These tissues are those that cover the surfaces and linings of organ systems (like
the skin surface, stratified squamous
epithelium).
Can give structure to the body by serving to attach or support tissues (may be referred to as support tissues in some texts). These include bone and
cartilage and loose tissue such as blood cells, fat cells, and loose fiberous
tissue.
Name these Systems’ Functions!
• Muscloskeletal or Skeleton and Muscles
• Skin • Digestive system• Respiratory system • Excretory system