The General Features of Human Cells Essay

Words: 1735
Pages: 7
Open Document
The adaptation of cells to their functions,their size, and shape

1.THE GENERAL FEATURES OF HUMAN CELLS
The cell is the structural functional unit of all known living organisms it is the smallest unit of an organism that is classified as a living and is often called the building block of life .Like ourselves, the individual cell that forms our bodies can grow reproduce, process, information, respond to stimuli and carry out an amazing array of chemical reactions ,as the twenty first century opens we face an explosion of new data about components of cells what structures they contain how they touch and influence each other. The human body is composed of countless millions of units called cells .In an animal like a human there are …show more content…
These cells are scavengers that phagocytise killed micro organisms and are therefore effective at direct destruction of pathogens and clean up of cellular debris from site of infection.
STRUCTURE OF HAEMOGLOBIN (appendix 5)

STRUCTURE AND FUNCTION OF NEURONS

Neurons are also involved in the eukaryotic cell; they transmit information by electrical impulses from one neuron to another. They are three different types of neurons the sensory, motor and interneuron. The sensory neuron transmits impulses in wards from sense organs to the CNS whilst the motor transmits impulses from the CNS which consist of the brain and the spinal cord ,to muscle and glands .The interneuron is found only in the CNS it connects motor and sensory neuron it is known by the term multi polar .The neuron has three parts soma which is the cell body ,dendrite and axon .Dendrites receive electrical impulses from other neurons and carry it to the soma .The axon is a long nerve fibre that sends electrical impulses from the soma to another connectivity neuron .It has mitochondria and microtubule that aid in the transportation of protein produced in the soma ,most neurons have fatty myelin sheath formed protein and phospholipids that is laid down as sheath around the axon .The myelin sheath protects insulate the nerve fibres and also increase the rate of transmission of nerve impulses .The electrical impulses are transmitted through
Show More

Related Documents: The General Features of Human Cells Essay

Principles 1 Chapter 1 1 Essay

according to fundamental principles of chemistry and physics. 1.3 The Cell The fundamental unit of life is the cell. CHAPTER OUTLINE/CORE CONCEPTS 1.4 Evolution Evolution explains the features that organisms share and those that set them apart. 1.5 Ecological Systems Organisms interact with one another and with their physical environment, shaping ecological systems that sustain life. 1.6 The Human Footprint In the 21st century, humans have become major agents in ecology and evolution. Chapter 1 Introduction…

Words 3123 - Pages 13

Visual Information Processing Paper

PSYCH/64 December 2, 2013 Holly Berry Perception Paper Humans have a unique and wonderful device in how one sees. The eye and brain work together to turn the world into visual data one’s brain can understand and use. There are some eye conditions that inhibit the sight or the recognition of the shapes one sees. Research continues to overcome these conditions as well as to further understand the biochemical reaction that gives humans the sight and understanding one has of visual data. Included…

Words 1591 - Pages 7

Essay about Embryonic Stem Cell Research

1 28 October 2011 Embryonic Stem Cell Research The history of stem cell research had an embryonic beginning in the mid 1800’s with the discovery that some cells could generate other cells. An embryo is an organism in the early stages of development that cannot survive on its own because it lacks tissues, organs, and body structure. Today, stem cell research is a focus of a controversy over the use of embryonic stem cells for research. This is why we have chosen this topic to provide information…

Words 1015 - Pages 5

Stem Cells Essay

Stem Cells By Monique Ivy What is Cord Blood Cord blood comes from a newborn’s umbilical cord and can be collected immediately after birth. It contains powerful stem cells that have been used to regenerate healthy blood and immune systems. So far, cord blood stem cells have been used in more than 35,000 transplants worldwide. Doctors are also researching cord blood as potential treatment for conditions that currently have no cure. • A newborn’s umbilical cord tissue contains several different…

Words 750 - Pages 3

Prowazekii Research Paper

bacteria that inhabit the cytosol of its host. It is mostly known for infecting humans with the disease epidemic Typhus. R. Prowazekii is a gram negative, aerobic bacteria that have had a recent loss of abilities that has caused an evolutionary genome reduction. These lost functions include encoding enzymes for the synthesis of amino acids, sugar metabolism, nucleotides, and lipids. However this species still has unique features due to their strict intracellular lifestyle, adaptability between invertebrate…

Words 790 - Pages 4

Cell Phones: Does Using Cell Phones Make People More or Less Connected? Essay

Cell phones: Does using cell phones make people more or less connected? Article 1 About writer: Helen Lee Lin in 2012. He did Ph.D in the department of Psychology for University of Houston and now he is working as a writer and freelancer in Ankara, Turkey. His basics interest in writing are in the fields of language, marketing, human relationship and media effects. Link to the Article: http://www.scientificamerican.com/article/how-your-cell-phone-hurts-your-relationships/ Summary In the…

Words 1279 - Pages 6

Technology Research Paper

it. Whether it’s the e-mailing, cell phone, computers, laptops, tablets, video conferencing, video gaming, has changed each and every day living dramatically. Everything from the business world, to decision making, to human resources has been highly affected by the new and advanced technology. It’s amazing how technology has improved and more advanced than decades before. Today, it’s better and faster communicating by via e-mail. It’s with family members, or a general manager, we all use e-mails every…

Words 1520 - Pages 7

Essay about Genetic Disorders

syndrome is a disorder caused by the loss of genetic material from one of the sex chromosomes. Humans normally have a total of 46 chromosomes (which are tiny, DNA-containing elements) that are present in every cell of the body. DNA encodes genes, which specify all the proteins that make up the body and control its functions. In humans, there are 23 matched pairs of chromosomes in every cell. Each cell contains 22 pairs of chromosomes called autosomes that are the same in males and females. The…

Words 1621 - Pages 7

Evolution Of Genetic Engineering Essay

Evolution of Genetic Engineering Genetic Engineering is the intentional alteration of genetic material. Human understanding on this subject is very minute. Any interference in a person's genetic makeup can cause irreversible damage, outweighing the benefits of Genetic Engineering such as eradication of diseases, the two kinds of Genetic engineering therapeutic or enhancement and religious beliefs. When discussing the topic of genetic engineering we must be aware that there are two different types:…

Words 731 - Pages 3

Essay Biology Definitions

Key words Chapter 9 Abiotic | Non-living | Acacia shrub lands | Major vegetation type dominated by mulga, a species of Arcia, occurring in arid inland Australia. | Adaptation | Features that appear to equip an organism for survival in a particular habitat. | Annuals | Plants that germinate, mature and produce seed and then die in one growing season. | Biennials | Plants that live for two growing season, germinating and growing the first and producing seed and dying in the second. | Biotic…

Words 1782 - Pages 8