EXPERIMENT ONE- BIOLOGY MODEL Answers TO DETERMINE THE EFFECT OF CHEMICALS AND TEMPERATURE ON MEMBRANE DESTRUCTION AND PERMEABILITY IN BEETROOT (Beta vulgaris) Introduction The cell membrane is made up primarily of phospholipids and proteins which contribute to its selectively permeable nature. The function and permeability of the cell membrane depends on its intact structure. When destroyed‚ the permeability of the cell membrane is disrupted causing cellular contents to leak out. The cell
Premium Cell membrane Solvent Cell
on chemistry. Cells are considered to be the smallest structure that is alive. They are often too small to see without the aid of a microscope. All living organisms are composed of cells. The smallest organisms are composed of a single cell; larger organisms are composed of more than one cell. Similar kinds of cells may be arranged together to form a tissue. Tissues have specific properties and functions. For example muscle tissue is composed of muscle cells. It functions to move body components
Premium DNA Gene Organism
Biology Digestive Enzyme Experiment “Design an experiment in which you will investigate a digestive enzyme’s effect on digestion” Research Question: To determine the effect of enzyme concentration on the rate of digestion. This will be done by increasing the concentration of the enzyme diastase and investigate its effect on the rate of starch digestion. The rate will be determined by the amount of time it takes to completely digest the powdered starch‚ the complete digestion will be indicated by
Premium Starch
2.1 Cell Theory 2.1.1 Outline the cell theory The three main principles of the cell theory are: * All organisms are composed of one or more cells * Cells are the smallest units of life * All cells come from pre-existing cells New Concepts * Cells contain the blueprint for their own growth‚ development and behavior * Cells are the site of all the chemical reactions needed to sustain life * Cells (and multicellular organisms) show emergent properties – appears as complexity
Premium Cell Cellular differentiation
Brain Structures and Functions Worksheet PSY/340 Version 3 1 University of Phoenix Material Brain Structures and Functions Worksheet Provide a brief description for each of the following functions: 1. Basal ganglia Controls cognition‚ movement coordination‚ voluntary movement. 2. Corpus collosum Thick nerve fibers that connect both brain hemispheres. 3. Temporal lobe Located on the sides of the cerebral hemisphere. Deals with talking and hearing. 4. Occipital lobe Located
Free Cerebrum Cerebral cortex Brain
synthesized protein is still bound to the ribosome 9. The two proteins that initiate the transfer of the N-terminal signal sequence of secretory proteins to ER include? 1.__________ 2.____________ SRP‚ SRP receptor 10. Describe the main function of SRP (Signal recognition particle). SRP is a cytosolic ribonucleoprotein particle that binds to the ER signal sequence in a nascent protein and the large ribosomal subunit; forming a large complex. SRP targets the nascent protein ribosome complex
Premium Protein Protein structure
3.3 & 7.1 DNA Structure Worksheet 1. Draw and label the structure of a simplified single nucleotide‚ including sugar‚ phosphate and base. 2. Complete the table below to show the pairings of the bases in DNA: Purine | Pyrimidine | Adenine | Thymine | Guanine | Cytosine | 3. Where would one find the base uracil? RNA‚ it replaces thymine 4. In the space below‚ draw a single strand of three nucleotides‚ naming the bonds between them and showing the correct relative position
Premium DNA
Feature Structure Function Atria (singular atrium) thin walled no valves rough pectinate muscles sinus node (impulse generating tissue) interatrial septum Right atrium: Receives deoxygenated blood returning to the heart from the vena cava and pumps it to the right ventricle. Left atrium: Receives oxygenated blood returning to the heart from the pulmonary veins and pumps it to the left ventricle. Ventricles thicker walls (than atria)‚ the left is thicker than the right as blood must be pumped all
Premium Heart Blood
Experiment 3: Projectile Range Versus Angle EQUIPMENT NEEDED – Mini Launcher and steel ball – Plumb bob – Measuring tape or meter stick – Carbon paper – Graph paper – White paper Purpose The purpose of this experiment is to find how the range of the ball depends on the angle at which it is launched. The angle that gives the greatest range is determined for two cases: launching on level ground and launching off a table. Theory The range is the horizontal distance‚ x
Premium Function Angle Table
Nucleus- The nucleus is the control center of the cell. This is where DNA is contained. This is like the town hall or the mayor’s office because it is the control center of a town. The nucleus uses DNA like a city uses blueprints to direct the production of protein. Nucleolus- The nucleolus is where ribosome is made and is rich in RNA content. It is located inside the nucleus. A mayor is like this because the mayor makes everything in the town happen. He also works from the town hall‚ or works
Premium Cell Organelle