| | | 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. |
stores proteins and alot of exporting (sending stuff out of the cell) 3. In which part of the cell would you expect to find nucleotides? building block for DNA, DNA found in the nucleus 4. Name the two organelles involved in energy conversion.chloroplast and mitochondria 5. What are the basic functions of the organelles in chapter 4?
Rough ER transports these proteins to the regions in the cell where it is needed. | Ribosomes | A ribosome is composed of two parts known as the large and small subunits. Each of these is a combination of protein and a type of RNA known as rRNA. | the main thing they do is that they arrange the strands of the amino acids for use of the other parts of the cell and ultimately the body. | 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.
Two organ systems that regulate and maintain homeostasis are the Nervous and endocrine systems 29. Which monomer is used to build RNA and DNA? Nucleotide 30. A chemical that can conduct electrical current when dissolved in water is call an Electrolyte 31. What cavity contains the liver?
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.
| The word Ribosomes remind me of Ribs. Then I think of protein which leads me to the definition. | Endoplasmic Reticulum | The Endoplasmic Reticulum is a bunch of membranes inside of a cells. It's function is mainly manufacturing and packing. | | Golgi Apparatus | Golgi Apparatus creates lysosomes which helps with digestion.
What aspects of cell membrane structure are accurately illustrated by it? * Describe the structure of the cell membrane according to the fluid mosaic model. * What class of biological molecules do enzymes fit into: carbohydrates, lipids, proteins, or nucleic acids? How do enzymes work? What do they do?
Question 1 Answers: The sum of all chemical reactions is referred as metabolism. This is divided into catabolism in which complex substances are broken down into simple ones, with the release of ATP, and anabolism in which simple substances are used to make complex ones, spending energy. This type of reaction is also known as a biosynthetic reaction. Part of the energy in both types of reactions is lost to the environment as heat, metabolic pathways are defined as the sequences of chemical reactions in the cell. All these reactions result from the action of specialized proteins known as enzymes.
It carries energy around the cell to where it’s needed. ATP is synthesised from ADP and inorganic phosphate (Pi) using energy from an energy-releasing reaction e.g the breakdown of glucose in respiration. The energy is stored as chemical energy in the phosphate bond, the enzyme ATP synthase catalyses this reaction. ATP diffuses to the part of the cell that needs energy. Here it’s broken down back into ADP and inorganic phosphate (Pi).
How do different concentrations of enzyme affect the rate of yeast peroxidase activity? Background Information: Many organisms can demonstrate hydrogen peroxide (H₂O₂) enzymatically. Enzymes are globular proteins, responsible for most of the chemical activities of living organism (Masterman, David, and Kelly Redding). Enzymes catalyze thousands of chemical reactions that occur in living cells. In an enzyme-catalyst reaction, the substrate binds to the active site and forms an enzyme-substrate complete with the enzyme.