7. Ribosomal location determines the usage of proteins made there. How are proteins used produced at each of the following ribosomal location? Free ribosomes in the cytosol - makes protein that functions within the cell Rough Endoplasmic Reticulum (RER) – makes protein that functions outside the cell 8. Describe tRNA function.
The nuclear membrane has a similar structure to the cell membrane but it contains gaps which allow protein to pass through. The nucleus controls almost all of the activities of the cell. Cytoplasm: The cytoplasm refers to anything which is inside the cell boundary and outside the nucleus. It is a semi-fluid material which is capable of flowing slowly. Many chemical reactions are carried out in the cytoplasm.
| | | 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. |
Golgi body: The Golgi body is an organelle found in most eukaryotic cells. The Golgi body has numerous functions, such as sorting and progressing protein. While present in the Golgi body, they are processed and sent throughout the cell. The Golgi body is also responsible for deciding which proteins are to be transported outside the cell. Golgi body: The Golgi body is an organelle found in most eukaryotic cells.
The plasma membrane acts as a selective barrier between the cell and its environment, and is a structure that you will study in detail throughout the year. The nucleus consists of a limiting double bilayer nuclear envelope containing nuclear pores enclosing the nucleoplasm. Small, irregular particles scattered throughout the nucleus or accumulated adjacent to the nuclear envelope are clumps of condensed chromatin known as heterochromatin. They consist of protein and DNA and stain with basic dyes. When the chromatin is dispersed and not readily stainable, it is known as euchromatin.
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.
The nucleus regulates all cell activity and is bounded by a double membrane called the nuclear envelope, this membrane separates the contents of the nucleus from the cytoplasm. The Nucleus have two major functions. It stores the cell’s hereditary material, or DNA and it co-ordinates the cell’s activites, which include metabolism, growth, protein synthesis, and reproduction (cell division). ‘Mitochondria are the cell’s power producers’ Bailey, About.com. They convert energy into forms that are usable by the cell.
Depending on if the cell is an animal cell or a plant cell. | | Cytoskeleton | Cytoskeleton has intercellular proteins that help the cell maintain its shape and with helps with movement. | The word skeleton in Cytoskeleton reminds me of the meaning. | K Key Idea | I Information | M Memory Clue | Ribosomes | Ribosomes are protein builders. | The word Ribosomes remind me of Ribs.
Outline the Function of the Main Cell Components Lysosome Contains powerful enzymes capable of digesting all major chemical components of living cells. Lysosome Contains powerful enzymes capable of digesting all major chemical components of living cells. Cytoplasm This is a semi-fluid material likened to a gel. It holds together the organelles, apart from the nucleus of the cell and supports the cells structure to make it possible for molecules to be transported. The cytoplasm is also where nutrients are absorbed and processed and is where many chemical reactions take place.
Can microtubules act as a good pharmaceutical target? Microtubules are known as tubuline polymers initiated in the cell cytoplasm of eukaryotic cells. They have a hollow centre surrounded by a cell wall made up of 13 tubuline molecules which are stacked up beside each other. Tubuline is a recognised as a globular protein and has two dissimilar subunits such as α-tubuline and β-tubuline. These dimers add on to the ends of a microtubule allowing the molecule to increase in size (Campbell & Reece, 2004).