Animal Cell Reports Samples For Students

Introduction

Osmosis refers to the net water movement across a membrane, which is selectively permeable and the movement is driven by a difference in the concentration of the solutes on the opposite sides of the membrane. A selectively permeable membrane allows water to pass through without allowing ions or solute molecules to pass through. Other small molecules that are not charged are also allowed to pass through the membrane. Diffusion, on the other hand, refers to the movement of molecules in a random motion as a result of the kinetic energy and causes the molecules to have a net movement from areas where the particles ...

Abstract

Water is an important chemical owing to its various uses by living things. Most chemical reactions within the bodied of living things require water in order to occur. It is purported that life evolved from water some 3.8 billion year ago following the organization of inorganic and organic molecule to form as prokaryotic cells. Besides, the well being of a cell is overly dependent of the balance between the water and the dissolved substances in the water. In this regards, the cell can permit water molecules to move in and out of the cell; the process in called Osmosis.

Introduction

In ...

1. Overview

The peptide hormones are proteinous in nature and may have 3 to 200 amino acids residues. This class of hormones includes all the hormones of the hypothalamus and pituitary, as well as insulin and glucagon of pancreas. Peptide hormones are named based on their endocrine activity rather than their chemical structure; for example, growth hormone is thus named because one of its effects is to stimulate growth. The structure of a particular peptide hormone can vary among different species, with some homology between close relatives. Some small peptides are identical; for example, GnRH is identical among mammals but different in ...

Aims

1. To observe and investigate the effects of osmosis across the cell membranes of a plant.
2. To investigate the ability of different molecules to diffuse across a selectively permeable membrane.

Introduction

All living cells are enclosed by an outer covering known as plasma or cell membranes. In addition, these plasma membranes serve as barriers between different compartments in the body to confine processes and materials to certain locations. Examples of these processes are diffusion and osmosis which are the main physiological processes that play important roles in the body. Diffusion can be defined as the process by which molecules move ...

Osmosis is the random diffusion of solvent water molecule from an area of low solute concentration to areas where the solute concentration is high through a semi permeable membrane so as to equalize the concentration of the solute on both sides (Kylstra, Longmuir, and Grace 289). It is a biological process essential to both flora and fauna that results into various physiological effects, for this experiment water and a mixture of syrup and water will be used to demonstrate the process. A laboratory report hence illustrates what the students involved, understood while carrying out the practical experiments.
The purpose of the ...