Cell Essays

Introduction Every cell needs a source of energy in order to perform their daily functions. However the process to get this energy is different for plant and animal cells. Plants cells undergo a process called photosynthesis where light energy from the sun is used to convert carbon dioxide and water …

1. What do we call electrical messages that are sent down the axon of a neuron? Action potentials 2. In one sentence, describe how the electricity in an action potential is generated. Generated by the opening of gated sodium channels 3. Draw a diagram of the cell membrane of the …

The cell membrane consists of mostly phospholipids and proteins which gives the cell its selectively permeable nature. The function and permeability of the cell membrane depends on its whole structure. When destroyed, the permeability of the cell membrane is disrupted causing cellular contents to leak out. When cells are cut, …

In this experiment you will be estimating the osmolarity of potato cells by finding their change in weight in solutions of known molarity. The object is to find the molarity where the mass does not change. No net change in weight indicates that there has been no net gain or …

Organelles & Illness – Imagine that you are part of a research team that specializes in diagnosing disorders associated with malfunctioning cellular organelles and structures. Medical doctors consult you to provide a cellular explanation for particularly difficult cases. You recently received the two patient histories outlined below – what is …

Step 1: Determine which GPCRs are associated with the peach scent. (3.5 pts) Insert the cDNA of all the olfactory GPCRs into E. coli and purify out all the olfactory GPCR proteins. For each GPCR protein, have one control reaction with just the GPCR, and one experimental reaction where the …

1. Describe the structure of DNA. It is a right handed double helix. It is made up of nucleotides that are bound to each other by covalent bonds. Nucleotides are abbreviated as A, G, C, and T. The abbreviated nucleotides stand for Adenine, Guanine, Cytosine, and Thymine (Simon, Reece, & …

1.The Monera The five-kingdom system of classification for living organisms, including the prokaryotic Monera and the eukaryotic Protista, Fungi, Plantae and Animalia is complicated by the discovery of archaebacteria. The prokaryotic Monera include three major divisions: The regular bacteria or eubacteria; the cyanobacteria (also called blue-green algae); and the archaebacteria. …

1. In which phase of mitosis do each of the following occur: a. Centromeres split and chromosomes move toward opposite sides of the cell b. Chromatin coils to form visible chromosomes c. The nuclear membrane disappears d. Sister chromatids line up in the center of the cell 2. In which …

Unlike the abdominal viscera, the thoracic viscera are separated into two cavities by an area called the mediastinum. What is the clinical importance of this compartmental arrangement? The clinical importance of this compartmental arrangement is that the mediastinum region contains a lot of major and essential parts of the human …