| | | A) | endoplastic reticulum | | | B) | microtubules | | | C) | cytoplasm | | | D) | mitochondria | | | | | | Feedback: The cell's chemical processes take place in a semifluid material called the cytoplasm. This material provides an ideal environment for organelles because of its fluidity. | | 7 CORRECT | | This shows an example of endoplasmic reticulum. What is the significance of its structure? | | | A) | provides a location for DNA production | | | B) | helps decrease surface area | | | C) | allows selective permeability of cell membrane | | | D) | facilitates breakdown of chemical bonds | | | | | | Feedback: The pleats and folds of the endoplasmic reticulum provides a large surface area where cellular functions, such as breaking chemical bonds, can take place.
The phospholipids make the basic bag. The proteins are found around the holes and help move molecules in and out of the cell. Cytoplasm This is a fluid that contains a simple mixture of chemicals and nutrients that are the basic living materials for the cell. All organelles are suspended within this. It moves materials around within the cell.
Each of the organelles has a membrane or double membrane and are isolated from each other in the cytoplasm; they refer to this has compartmentalization of the cytoplasm. This is very important because the chemical reactions which take place within each organelle are separated from each other so that they do not interfere, and therefore operate more efficiently (bio factsheet (1997). These organelles are involved with the basic functions of the cell i.e. reproduction, metabolism, transport and protein synthesis. This is referred to as division of labour of the cell (Cambridge university press 2000).
Outline the functions of the main cell components. Cells: Cell membrane: The cell membrane is a biological membrane which separates the interior of all cells from the outside environment. It controls the movement of substances in and out of the cells and protects the cells from outside forces. The cell membrane consists of the lipid bi-layer with embedded proteins. The cell membrane surrounds the cytoplasm.
| Goigi Apparatus | The main function of the Golgi apparatus is to be responsible for handling the macromolecules that are required for proper cell functioning | It packages and ships molecules made in the ER. | Lysosome | Lysosomes are spherical bag like structures that are bound by a single layer membrane, however, the lysosome shape and size may vary to some extent in different organisms. The lysosome size ranges between 0.1 to 1.2μm. | Lysosomes function as the digestive system of the cell, serving both to degrade material taken up from outside the cell and to digest obsolete components of the cell itself. | P1 tasks 2 Organs | Anatomy | Physiology
Unit 2: Assignment 1. Cell Structure & Function Crash Course Biology #4 Animals are all made of the same building block “the animal cell”. They are made up of eukaryotic cells because they have a nucleus which contains the DNA (calls all the shots for the rest of the cell). Along with the nucleus there are several organelles with specific functions. Plant eukaryotic cells are made up differently from animal eukaryotic cells in that they have organelles that allow them to make their own food, their cell membrane is actually a cell wall that is rigid and made of cellulose.
Parasites are part of a large group of organisms called eukaryotes. They are different from bacteria & viruses because their cells share many features with human cells including a defined nucleus. They are usually larger than bacteria, although some environmentally resistant forms are nearly as small. Some parasites only replicate within a host organism, but some can multiply freely in the environment. Parasites can be made up of one cell, as in the case of Giardia, or many cells, as with parasitic
What is the difference between prokaryotic cells and eukaryotic cells? What are the names for the two major groups of prokaryotes? both have a cell membrance on the outside and both have ribosomes but the eucaryotic only have membrane bound organelles. both can have the cell wal. euc.
It is also known as the powerhouse. | | Cell Walls | Cell Walls are a outer protective layer for cells. | | Lipid Bi-layer | The Lipid Bi-layer is apart of the cell membrane that acts as a barrier. And only let certain molecules and and others out. |
Characteristics of Living Organisms Every living thing is made of smaller parts. The smaller parts have different functions, but all of the parts work together to enable the organism to live and survive in its environment. The smaller parts are made of even smaller parts, until you reach the smallest part of all: the cell. The cell is the basic building block of all living things. These cells, too small to be seen with the unaided eye, are organized into tissues.