Science Essays

What does biodiversity mean? It is a word used to describe the variety of all life in an ecosystem in addition to the specific habitats and communities in which they live (Convention on Biological Diversity). For years, people have been going back and forth on whether the environment is overprotected or underprotected. I believe that […]

1. Can you identify a portal system in the renal circulation? The glomerulus is the site of the portal circulation in the kidneys. The afferent arteriole enters the glomerulus and ultrafiltration of blood occurs here while the rest of the blood is carried in the efferent arteriole to the venules. Thus blood is carried into […]

The moral status of the embryo is a controversial and complex issue. The main viewpoints are outlined below. 1. The embryo has full moral status from fertilization onwards Either the embryo is viewed as a person whilst it is still an embryo, or it is seen as a potential person. The criteria for ‘personhood’ are […]

1) The relationship between the rate of diffusion, volume and surface area is that the surface area of a subject somewhat correlates with the volume of the object. When the surface area and volume are set up as a ratio, this gives a good idea as to how fast the rate of diffusion will be. […]

The idea of a “designer baby” involves parents using genetic technology to make changes and choose desired or aesthetic alterations in embryos. This raises concerns about how potential parents will decide on having children. Will they choose to interfere in the natural development of an embryo? Is it ethical to modify an unhealthy embryo? Could […]

When determining and discussing the question “how adoption and twin studies have influenced the nature versus nurture debate” it is important to identify the key terms. The nature versus nurture debate is an ongoing debate focusing on how much our environment (nurture) and our genes (nature) affect us as human beings. Twin studies (studies involving […]

On a trip to San Diego Zoo on March 23, I learned about the variety of primate species. Three species that will be analyzed here are the Wolf’s Guenons, the Mandrills, and the Siamangs. Wolf’s Guenons, Old World monkeys, are found at south of Africa’s Congo River. Their habitat is forests, woodlands, near rivers and […]

The woodlouse is a type of crustacean that belongs to the suborder Oniscidea in the order Isopoda. There are over 3,000 known species of woodlice. They have a lengthy exoskeleton and fourteen jointed limbs. As they grow, woodlice need to shed their shell-like exoskeleton. This shedding process occurs in two stages – first the back […]

I research on animals. I study the intimate chemical and electrical processes that are the brain’s mechanisms for storing information, for learning and memory. To discover those mechanisms, I analyse the cellular changes that occur when young chicks learn and remember simple tasks. An anti-vivisectionist once asked me whether my research didn’t make me feel […]

The fetal pig dissection was helpful for one to understand the body and all of the body’s functions. The procedures helped the students precisely do the dissection correctly. The questions that were assigned helped the students have a deeper understanding of the pig’s body. This dissection also helped the students become familiar with some of […]

Species on Earth interact in many different ways (Abrams, 2000). These interactions have evolved over millions of years to become an incredibly complex web of inter-species relationships and understanding these relationships enables science to model future species interactions (Abrams, 2000). From symbiosis to parasitism, Earth seems to have every type of relationship imaginable (Dietl and […]

I have been assigned to write about the fundamental nutritional terms and concepts related to Marian’s case study. To begin, Marian will provide a brief explanation of the key terms used in the field of nutritional health. These terms include: The text below is unified but retains the and their contents: Food: Food is a […]

In 1951 at Johns Hopkins Hospital, a black woman was diagnosed with cervical cancer. She underwent treatment there as it was one of the limited number of hospitals that accepted black patients. Without her knowledge or consent, cells were extracted from her cervix during an examination. These cells, referred to as HeLa cells after her […]

There is no doubt that Veganism is a complex and highly controversial issue. Veganism is primarily known as a type of diet; one that excludes all animal products and byproducts as dairy, eggs, and honey. Basically, there are two groups of vegans. One of them lives the vegan lifestyle for ethical reasons the other for […]

All living organisms respire using diffusion to exchange gases with their surroundings. The systems these organisms utilise in order to survive differ greatly from species to species depending on their structure and habitat. These organisms have evolved over time to occupy these differing habitats, resulting in the need to physically adapt in order to survive […]

Living organisms have a range of macromolecules, including carbohydrates, lipids, proteins, and nucleic acids. These macromolecules are made up of multiple molecules and have various roles such as energy storage and information transmission. While some foods contain mixtures of macromolecules that can be tasted, others cannot be identified by taste alone. As a result, scientists […]

Analyse how two body systems interrelate to perform a named function/functions. Even though the systems may seem very separate in their activities the digestive system and respiratory system both contribute to work together. The systems cannot work by themselves as they both provide the materials needed throughout the body. They supply energy to all the […]

This report is written upon the instructions given by supervisor Mr. Tim Burch to select a brand of propolis capsules for special promotion in the winter for the company. The objective of this report is to find out the popularity of propolis on market, analyse the basic functions of propolis and evaluate the defense system […]

Step 1: gather the ingredients such as water, flour, baking powder, sugar and chocolate icing. The ingredients represent each products that the cycle of photosynthesis need. Such as water – which is use in the light dependent reaction when the molecules splits and gives off oxygen. Step 2: Preheat the oven at 375 degrees and […]

Light enters through the cornea, which is the first step in refraction. The iris then modulates the amount of the light that enters the eye. The light then passes through the pupil, which regulates light entry into the inner eye and brings objects into focus. Light then then passes through the lens which focuses the […]

Arabidopsis thaliana is found in the mustard family and is a weed used as a model organism to aid in research. Over the years, research has taken off due to this and other model organisms for many reasons. A short generation time is ideal so that experiments can be conducted in a timely manner. Arabidopsis […]

The perception of taste is carried out through taste buds, which consist of clusters of taste receptor cells. These cells evaluate the concentration of various molecules in the mouth and transmit the sensation of taste to specific regions in the brainstem. Papillae, found on the tongue, are small protrusions that host a large number of […]