Free Biology Essay Examples & Writing Tips. Page 3

808 samples

A Statistical Experiment: Junco Birds

The presence and content of 2-pentadecanone in the male may be related to the saturation of particular odors that excite the reproductive call of female birds.
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Researching the Basics of Biology

Further, I will describe the three things I learned during the course: the structure and functions of proteins, Mendelian genetics, and genetically modified organisms.
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Digestive Journey of Cheeseburger

The salivary glands contribute to the breakdown of the nutrients in the mouth while the pharynx directs the eats to the esophagus.
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The Memory Formation Process: Key Issues

Hippocampus plays an essential role in the memory formation process because it is the part of the brain where short-term memories become long-term memories.
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Neuroethics, Its Meanings and Main Topics

Neuroscience studies how the brain works and what is the structure of the brain. It is important to understand the anatomy, physiology, biochemistry of the brain, and to correlate them with the behavior.
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The Age and Growth of Cod (Gadus Morhua)

The Atlantic Cod occurs throughout the colder and the deeper regions of the Northern Atlantic, starting from Greenland to North Carolina and Scandinavia.
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Iris Flowers Species and Their Classification

Data mining regarding the classification of iris flowers will be important in identifying the existing iris species, outlining the structural differences between the various species, identifying the possible causes for the differences, and underpinning potential [...]
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Living Things: What Do They Have in Common?

Nevertheless, cellular structure is a feature of all living things: from unicellular bacteria and algae to multicellular plants and animals. However, that cycle of growth and development is natural to all living organisms.
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Viruses: Reproduction and Adaptation

However, viruses cannot sustain themselves and are not capable for independent replication, hence, it is not a living organism. To conclude, viruses are on the boundaries of the living and non-living area.
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Microbiological Analysis: Lab Report

This type of medium is standardly used to isolate Gram-negative bacteria, with a source of nutrients in the form of carbon and nitrogen from the casein hydrolysate that is part of the C-CNA.
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A Lab Report for Microbiology Class

The main advantage of this microbiological method is the different concentrations of nutrients and oxygen at different levels of the depth of the beaker: this allows bacteria with different aerotolerant needs to grow.
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Endosymbiotic Theory: Cells’ Development

Hence, the endosymbiotic theory is plausible, but there are other theories that trace the development of cells and life on Earth as well. Overall, this theory is plausible, although there are other explanations that highlight [...]
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The Role of Microorganisms, Biotechnology

Today, the field of their use in human life is so vast and diverse that it makes an invaluable contribution to the development of such industries as health, industry, and the functioning of the environment.
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Biological Taxonomy: Classification of Microorganisms

This discovery invalidated the eukaryote-prokaryote dichotomy by revealing the concise division of the 16S rRNA tree into three primary branches, which was later distinguished as the three life domains: Eukarya, Archaea, and Bacteria.
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Blood Cells and Their Functions

The function of red blood cells lies in carrying oxygen from the lung to the rest of the body. Such a shape allows them to increase the area of the surface, which, in turn, creates [...]
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Homeostasis and Regulation in the Human Body

The feedback loop essential components include the receptor, also known as a sensor, which detects changes in the body Remember that homeostasis is the ability of the body to maintain stable and balanced internal conditions.
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Biohybrid Actuators: Compare and Contrast

The introduction also encompasses the description of the researchers' procedure, addressing the aim of examination and stimulation of the electrical signals in plants.
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The Role of the Dietary Lipids in the Organism

This is achieved when one-third of vegetable and two-thirds of animal fats are used in the diet. The sources of dietary lipid in food are fats used in food preparation and those contained in food.
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First Reptiles Adaptation: Amniotic Egg Evolution

The amniotic egg evolution is an adaptation that allowed the first reptiles to thrive in a dry land the development occurred over 300 million years ago. The robust shell protects the egg from drying out, [...]
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Jean-Baptiste Lamarck’s Views and Works

For example, a giraffe's neck is stretched because it needs to reach the foliage on the tops of trees, and the anteater's tongue has become long to penetrate the anthill.
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Human Biology: Human Cells and Chromosomes

Both pathologies are united by the common term aneuploidy, which describes deviations in the karyotype of a diploid organism in which the number of chromosomes is not a multiple of the haploid set.
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Pathogen Study: Pseudomonas Aeruginosa

The pathogenicity of the bacterium is expressed in the infection of sites with purulent inflammatory processes and abscesses, which is particularly relevant to burn victims.
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Nervous System and Human Capacities

The central part of the system is located in the brain and spinal cord, and all reactions appear there, while the peripheral one operates all over the body to deliver the signals to the organs.
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Perception and Brain Development

Individuals gain information about the elements and properties in the surrounding that are crucial for survival. Therefore, perception is a filter that allows people to survive and interpret the surroundings without allowing the abundant stimuli [...]
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Understanding the Hand Anatomy

The excellent functionality of the different parts of the body, including the hand, thigh, neck, girdle, pectoral, and legs, are critical for the normal functioning of a human being.
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Lymphatic System Analysis

Due to the anatomy of the lymphatic system, it is sometimes thought to be part of the main circulatory system in the body.
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Competition in Nature Observation

For example, it can be between plants and plants or animals and other animals or animals and plants, whereby the survival of one is threatened or lowered by the existence of another especially when there [...]
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Anatomy of the Brain: Key Issues

Some of the basic parts of the brain include the cerebral cortex lobes namely; the temporal lobes, the frontal lobes, the occipital lobes, the parietal lobes, the prefrontal cortex, and the limbic system.
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Aspects of the Skeletal System

The bones have a covering of calcium compound cells at the surface that gives the bones the strength and structure that they require for protecting and supporting the body.
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Preparation of Polymers and Polymer Modification

The hypothesis of the second experiment process was that Elmer's Glue changes into a rubber-like material from a glue-like substance. After the second process of combining Borax solution with Elmer's glue, a rubber-like material was [...]
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The Structure and Amino Acid Sequence of Beta-Glucuronidase

Beta-glucuronidase has wide application in the determination of urinary steroids as documented by Bernfeld and Fishman data. The purification protocol of -glucuronidase adopts a method that was described by Bernfeld and Fishman.
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Lecythis Pisonis: Wheres Located and What Is It

In the present biodiversity investigation, Vallilo and co-workers have analyzed the fatty acid and mineral composition of L.prisons Camb.seeds from four locations of S o Paulo State and evaluated the nutritive properties.
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Concept of Neurotransmitters

Exercise stimulates the release of neurotransmitters that reduce anxiety and induce a slight sense of joy. Serotonin encourages delight to exercise regularly; after a long break, the stimulation decreases, and restart workouts become challenging.
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Evolution: Natural Selection in Action

The population of these moths will have both dark and white moths at the starting point. The dark moths reproduced successfully due to lack of predation.
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Unique Functional Features of Blindsight

The findings are indicative of the fact that monkeys with striate lesions under standard conditions, where the target stimuli were delivered without the removal of the fixation point, did not move their eyes or saccade [...]
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Evolutionary Changes of Animals and Plants

This presentation will show how animals and plants evolved with time passing. It is critical to examine the factors that underlie these processes and their outcomes.
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Ca2+ Molecule Description and Its Functions

Because IP3 is permeable in the protoplasm, it disperses throughout the cell and attaches to the IP3-receptor on the outside of the ER or SR, causing Ca2+ to be transported from the ER or SR [...]
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Chlamydia Sexually Transmitted Disease

The clinical manifestations of chlamydial infection depend on the virulence of the pathogen, the duration of the stay of chlamydia in the body, the topography of the lesion, the severity of local and general reactions [...]
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Biology: Phylum Mollusca and Phylum Annelida

The key characteristics that define organisms in this class are they live in land, aquatic or marine environment, they have eyes, mouth, tentacles, and spiraled shells Clam, Muscle, Oyster, Scallop Bivalvia forms another class of [...]
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DNA Barcoding Sequence Analysis of Unknown Plant

The efficiency of this instrumental method is built on the idea of close similarity in the structure of DNA molecules to be more precise, the arrangement of nucleotides in it between closely related species: the [...]
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The Pomegranate or “Punica Granatum L.”

In ancient times, the Old Testament of the Bible, the Jewish Torah, and the Babylonian Talmud describe the pomegranate as a divine fruit conferring forces of fertility, good luck, and abundance.
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Sleep Deprivation and Insomnia: Study Sources

The topic of this audio record is a variety of problems with sleep and their impact on an organism. They proved the aforementioned conclusion and also paid attention to the impact of sleep deprivation on [...]
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The Kingdom Fungi: The Structure, Characteristics

It is a kingdom of living organisms that contains eukaryotic, heterotrophic organisms whose cells are enclosed by cell walls. Their cell organelles are bound by membranes hence the name eukaryotic.
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Molecular Basis of COVID-19 Virus

The coronavirus genome is as a share member of the Niclovirus order, such as the family Arterividrae and Toro virus genus. It is used to check the spread of the infection and trace those infected [...]
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Antioxidants Description and Overview

There are two species of pomegranate, the Punica granatum, and Punica protopunica.P.granatum originates from Yemen and is believed to be crucial in the ancestry of the present cultivated form of pomegranate.
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The Chromatography Method: Scientific Experiment

SDS-PAGE separates isolated protein of which can be visualized by coo massive stain that binds to the experimental proteins and hence, the intensity of this resultant bands is used to give plasminogen estimation in a [...]
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Homeostasis: Human Structure and Composition

The effect of a feedback of this nature is the stabilization of the affected system with the aim of the correction of the resultant deviations from the point that is naturally set.
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Scientists Convincing Science and Society

According to, there are a number of scientists that were involved in studies with an objective of convincing the society as well as science that the molecule of heredity is DNA.
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Cell Creation. Basic Characteristic of Life

The following paper would outline a process which would allow the researcher to grasp an understanding of the way life is created in order to fulfill all the different functions and operations of a cell.
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Deep-Sea Biology: The Search for a Sea Monster

This case study is about the attempts of Clyde Roper to find the giant squid. This canyon is known to be very deep and runs towards the Kermadec Trench which is also documented to be [...]
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Plant Resource Allocation: Materials and Methods

The nutrients obtained by the plant are used in the growth and development of various plant parts. Thus, plants have mechanisms of regulating the distribution of nutrients and biomass to various parts of the plant.
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Male Reproductive System and Anatomical Structures

Male and female reproductive systems have several similarities including the fact that most of the reproductive organs are developed from similar embryonic tissue that make these organs homologous. In male and female reproductive systems, [...]
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Bacterial Biofilms and Infections

In this paper, the researcher sees to conduct a review of the literature on the current state of knowledge of the role of bacterial biofilms in medical infections.
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Search for Intelligence: Acquisition of Intelligence

A few scincetist have delved into the uncharted territory that tries to connect intelligences and the occurrences of certain genes. In from studies and careful analysis of the brain, scientists have made certain interesting discoveries.
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Fuels Fat: Energy Balance and Metabolism

A gross rise in the increase of weight has led to serious scientific research and debates to come up with the most efficient way to regulate the human body weight.its worth noting that the main [...]
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Euclea Divinorum: Distribution and Dispersion

The paper will study the dispersion and distribution of the tree and the shrub types of Euclea divinorum. The plot that will be followed in this paper is from the common distribution of the organisms.
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Micronutrients During Pregnancy and Lactation

The main purpose of this article is to discuss the role of various micronutrients before and after the birth of the child because much attention has been given only to a few micronutrients such as [...]
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A Brain Anatomy and the Sexual Orientation

Second, the paper by Byne et al.not only studied the volume of the various interstitial nuclei of the human anterior hypothalamus, but also focused on investigating if the cell number in the various nuclei has [...]
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Micrococcus Luteus Detection Experiment

Microbial Physiology, the branch of microbiology responsible for the study of these enzymes, employs a spectrum of tests that detect the known set of enzymes unique to each species of microbe.
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The Oocytes and the Surrounding Cells of Follicles

In mammals, OSE assists in the dissolution of the follicle apex and all the underneath connective tissue and helps in releasing the matured ovum. The oocytes and the surrounding cells of follicles constitute the fundamental [...]
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Measuring the Salt Tolerance of Plants

The variety of crops grown and the need for agricultural measures for soil moisture and irrigation depend on the arable land belonging to a particular category.
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Perception of Spoken and Written Language

The cochlea is a spiral fluid filled structure and it propagates the vibrations from the fluid to the nerve impulses that direct them to the brain via the auditory nerve which is a collection of [...]
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Importance of Deoxyribonucleic Acid

The history of the discovery of DNA dates back to 1865 when Gregory Mendel used theories of heredity in analyzing the genetic profiles of pea plants.
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Microbial Fuels: Biofuel Ethanol From Alginate

This is because they are reported to contribute to "biofuel carbon debt" which is obtained by converting Grasslands or savannas, peatlands, and rainforests, to generate food crop-based biofuels in countries like United States and Southeast [...]
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Strontium in Bone Analysis

Numerous studies reveal that the rate of uptake and elimination of radionuclides is greatly influenced by the age of the subject.
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Phylogeny of Papaver Somniferum

The research performed by Kadereit and Claudia made a combination of ontogenetic and phylogenic strategies to distinguish the plants of Papaver genus.
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Anthophyta. Plant Analysis

The modification that happens on the leaves of the pea plant helps it to twine itself around other plants and gain support.
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Atherosclerosis: St. Louis Cardinal’s Death

The function of the arteries is to carry oxygenated blood from the heart to other parts of the body, while the function of the veins is to transport deoxygenated blood from other organs to the [...]
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Four Stages of Pain Phenomenon

The action potential generated in the cells then leads to the second stage called transmission, which transports electric signals from the cells to the spinal cord and into the brain. The third phase of perception [...]
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Purpose and Process of the Citric Acid Cycle

The purpose of the citric acid cycle is to break down 2-carbon units of acetyl into carbon dioxide while at the same instance transforming the energy from the acetyl group into GTP, which will be [...]
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Action Potential Overview and Analysis

The process of a neuron sending a signal is called an action potential, which happens by changing electrical potential that is brought about by the passage of an impulse along the cell membrane.
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“Molecular Insights Into Classic Examples of Evolution”

Current research, as discussed by the symposium speakers explicitly cited in this article, reveals that genetics plays a fundamental role in evolution science and it is indeed the mutation of genes that actually allows organisms [...]
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Phenotype Description of Drosophila

Given that the mutant has dark-brown eyes, an appropriate name for the mutant is 'cocoa' because the color of the eyes and their shape resemble cocoa grains.
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The Chemical Composition of Food

Secondly, the liver makes most of the cholesterol in the body which is still not important and the body takes only about 50% of the cholesterol in the food eaten and the rest is eliminated [...]
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How Blood Transports Respiratory Gases in the Body

The blood cells are mainly the red blood cells and the white blood cells but the most abundant cells are the red blood cells bearing, which carry the haemoglobin; a ferrous protein molecule important in [...]
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Brain Injury While Football Playing

The main reason for conducting this research is to understand the dependency of the head injuries got in childhood after the development and changes in the human brain in adulthood.
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