Online courses directory (363)

Zoology is the scientific study of diversity of animal life, classification, physiology, behavior, and evolution. Unicellular organisms have evolved into complex multicellular forms. Organisms, both unicellular and multicellular, in various complex shapes and sizes are found in almost every habitat and environment. The field of zoology includes many subfields of biology as well as a vast diversity of unicellular and multicellular organisms. Animals first appeared in the fossil record an estimated 600 million years ago as multicellular protozoa. Over the next 70 million years, they radiated into an incredible number of different invertebrate phyla (which represent the majority of animal groups and species), and in the next 150 million years, vertebrate and invertebrate species began to colonize the land. Though the history of animals is extensive and the fossil record at times is conflicted and vague, understanding the historical connections between animals is important in order to understand modern-day rela…

Developmental biology asks questions about how organisms come into being, how life forms, and how complex structures develop and are differentiated.  These fundamental questions have been the subject of research for centuries; accordingly, this course you will teach you not only about the beginnings of organisms, but about the beginnings of developmental biology as a science.  Currently, developmental biologists use a range of tools and research focifrom molecular techniques to surgical manipulations to chemical and environmental studiesto answer these questions.  Their approaches are multi-faceted because developmental biology itself addresses topics of importance to a wide range of fields, from molecular biology to neuroscience to evolutionary biology. In this course, you will learn about the field of developmental biology from its origins to the present day.  We will take a look at historical experiments as well as modern techniques and the mechanisms of development.  You will follow a variety of me…

Molecular biology studies the molecular mechanisms of life, particularly those responsible for genes and their expression.  In the center of molecular biology are the nucleic acids, DNA and RNA, and how they contribute to the synthesis of proteins. After a historical introduction (Unit 1), this course describes the basic types of DNA and RNA structure and the molecular interactions that shape them (Unit 2).  Unit 3 describes how DNA is packaged within the cellular nucleus as chromosomes; in eukaryotes the DNA coils around histones to form nucleosomes that comprise the chromatin of the chromosomes.  The next three units describe the core processes of molecular biology: replication of DNA (Unit 4), transcription of DNA into messenger RNA (Unit 5), and translation of messenger RNA into a protein (Unit 6).  These are followed by modifications of these basic processes: regulation of gene expression (Unit 7), DNA mutation and repair (Unit 8), and DNA recombination and transposition (Unit 9). The course conclu…

One of the best ways to understand the present is to understand the past. Evolutionary Biology is the study of the changes in life forms over time - changes that have occurred over millions of years as well as those that have occurred over just a few decades. In this course, we will look at the various mechanisms of evolution, how these mechanisms work, and how change is measured. The concepts you learn in this course will serve as a foundation for studying fossil records and current classification schemes in biology. We will begin the course by reviewing the evolutionary concepts of selection and speciation. We will then learn to measure evolutionary change through comparisons with the Hardy-Weinberg Equilibrium, to understand the process of change through Game Theory, and to interpret and classify changes by creating phylogenies. The course will wrap up with a look at the history of life according to the fossil record and a discussion of the broad range of life forms as they are currently classified. At the…

Ecology is the study of interactions between organisms and between organisms and their environments.  Population ecology is the subfield of ecology that identifies those ecological factorsin the community or in the ecosystemthat regulate a population’s size. Ecosystems and communities involve complex interactions that have evolved over long periods of time.  The species that are present and the interactions we see between them are the result of evolution under the unique environmental pressures that exist in a given environment.  These interactions may be delicately intertwined, such that the loss of a single species from a community could mean the collapse of the entire community in a domino effect.  Thus, biologists are concerned with the preservation of biodiversity in ecosystemsretaining as many different species in the ecosystem as possible so the intricate relationships among species are preserved. In recent years, we have seen a decrease in the biodiversity of ecosystems.  Human activities a…

Biochemistry is the study of the chemical processes and compounds, such as cellular makeup, that bring about life in organisms.  It is a combination of multiple science fields; you can think of it as general and cell biology coupled with organic and general chemistry.  Although living organisms are very complex, from a molecular view, the material that constitutes “life” can be broken down into remarkably simple molecules, much like the breakdown of our English language to the English alphabet.  Although there exists thousands upon thousands of molecules, they all breakdown into four core components: nucleic acids, amino acids, lipids, and carbohydrates.  As we can make hundreds of thousands of words from just 26 letters, we can make thousands of different biomolecules from those 4 components.  For example, the human genome, containing the necessary information to create a human being, is really just one very long strand of 4 different nucleotides. This course is structured around that approach, so…

The purpose of this course is to explore the subject of human disease, placing special emphasis on the cause of disease at the tissue level.  We will pay close attention to the underlying mechanisms that initiate and perpetuate the disease state.  Much can be learned about the causes of disease at the molecular and cellular level; we will accordingly spend quite a bit of time examining molecules, cells, and tissues and determining how the disruption of their normal functioning by various known and unknown causes can lead to disease. We will begin this course with a basic review of molecules, cells, and tissues in the human body.  We will then discuss the body’s first line of defense, the inflammatory reaction, and the immune system. Finally, we will survey the body’s organ systems.  We will approach each of the systems by examining the ways in which a prototype disease impacts its functioning.  (These “prototypes” will be diseases that impact a large number of patients around the world.)  We…

Biotechnology is the application of biology and biological concepts to science and engineering.  It is the crossroad of the biological sciences with other major disciplines of science, from organic chemistry to mechanical engineering.  The earliest applications of biotechnology involve people of ancient civilizations using organisms to create bread and wine.  The discovery of the Penicillium mold to combat infection is another famous example, as its production involved a specially designed fermentation process using microorganisms.  Nowadays, scientists use almost all aspects of biology in their applications, from DNA to protein to cellular organelles.  Living organisms, especially microorganisms, are thought of as biochemical machinery, able to be edited and changed to create new purposes.  We could program them to create insulin for diabetes patients or to produce fuel for our cars.  Biotechnology is nearly limitless in its applications. As biotechnology is a very diverse topic, this course will in…

Cancer has existed among humans since humans themselves began and has been a subject of urgent interest from very early in our history.  What we call “cancer” consists of a number of different diseases with one fundamental similarity: they are all initiated by the unchecked proliferation and growth of cells in which the pathways and systems that normally control cell division and mortality are absent.  Cancer-cell abnormalities are often due to mutations of the genes that control the cell cycle and cell growth.  To understand cancer cells, then, one must first understand the processes that regulate normal cell cycles. This course will cover the origins of cancer and the genetic and cellular basis for cancer.  It will examine the factors that have been implicated in triggering cancers; the intercellular interactions involved in cancer proliferation; current treatments for cancer and how these are designed; and future research and treatment directions for cancer therapy.

The advent of computers transformed science.  Large, complicated datasets that once took researchers years to manually analyze could suddenly be analyzed within a week using computer software.  Nowadays, scientists can use computers to produce several hypotheses as to how a particular phenomenon works, create computer models using the parameters of each hypothesis, input data, and see which hypothetical model produces an output that most closely mirrors reality. Computational biology refers to the use of computers to automate data analysis or model hypotheses in the field of biology.  With computational biology, researchers apply mathematics to biological phenomena, use computer programming and algorithms to artificially create or model the phenomena, and draw from statistics in order to interpret the findings.  In this course, you will learn the basic principles and procedures of computational biology.  You will also learn various ways in which you can apply computational biology to molecular and cell…

In this course, you will study microscopic anatomy. The study of the structure of a cell, tissue, organ, or related feature is known as anatomy. Gross anatomy (or macroscopic anatomy) involves examining anatomical structures that can be seen with the naked eye, whereas microscopic anatomy is the examination of minute anatomical structures that cannot be observed without the help of visual enhancement, such as a microscope. The terms microscopic anatomy and histology (the study of microscopic structure of animal and plant tissue) are used interchangeably. Many times it will be necessary to survey gross anatomy so that when you focus in on the microscopic anatomy you will have a geographical idea of the location within the body. This course makes use of microscope slides of anatomical structures to aid in the discussions of anatomy. Unit 1 begins with an overview of basic cell structure. The study of cells is known as cytology. Cells contain numerous structures that can only be seen with the aid of specialize…

Immunology is the study of our immune system, a highly sophisticated system that defends us against all disease-causing invaders by identifying and neutralizing such threats. Even though we might get sick every now and then, the immune system does an incredible job of warding off infection given how many infectious agents (thousands!) we come into contact with every day. This becomes most apparent when a healthy individual compares himself or herself to an individual with little or no immune response who cannot survive in a normal environment and must rely on specialized rooms much cleaner than even a surgery room. Before the discovery of immunity, we used to associate sickness and disease with various superstitions and beliefs. Only with the discovery of bacteria, viruses, and our own cells did scientists slowly piece together the modern theory of our immune system. Our overall system can be broken down into two sub-systems, each with its own unique cells, molecules, and functions. Our cells are in turn capa…

Have you ever wondered what qualities billionaire Warren Buffet, visionary Steve Jobs, or upcoming Jeff Bezos of Amazon.com all have in common?  After you finish studying business practices in this course, you may discover that you have some of the same qualities as other successful entrepreneurs. This course is designed as a survey course that will expose you to business terminology, concepts, and current business issues.  The intent is to develop a viable business vocabulary, foster critical and analytical thinking, and refine your business decision-making skills.  These skills will be acquired by the reading materials, exercises, and research assignments in this course that simulate the workplace today.  By delving into the five units of this course, you will be able to fine tune your direction and choice of career in business. A major goal of your education is to help you become a citizen who can contribute and compete in an increasingly global environment.  Elements of this course will focus on…

Accounting can be considered the language of business. If you are learning accounting for the first time, embracing its foundational concepts may be a challenging process. Mastery of accounting primarily rests in your ability to critically think through and synthesize the information as it applies to a given situation. You should approach the learning of accounting the same way you would approach learning a foreign language; It will take time and practice to ensure you remember the concepts. There are a number of sub-disciplines that fall under the umbrella of “accounting,” but in this course, we will be focused on financial accounting. Accounting as a business discipline can be viewed as a system of compiled data. The word data should not be confused with “information.” In terms of accounting, “data” should be viewed as the raw transactions or business activity that happens within any business entity. For example: Someone uses $30,000 of their savings to start a business. The use of these f…

In BUS103 [1] (Financial Accounting), we learned that firms need to track various forms of data in order to report to investors, regulators, and potential business associates such as customers and vendors.  Firm managers, however, often need information that is much more detailed than the data provided in these financial reports.  They use what is known as “managerial accounting” to make various decisions about their businesses.  To avoid information overload, much of their data is tailored to the needs of a particular business unit instead of generally applicable to the firm as a whole. As you might expect, different managers have different needs.  However, almost all management decisions deal with the same key issues: cost, price, and profit.  This course will examine this sort of decision-making, identifying the tools and methods managers use to make the best-informed decisions possible.  We will begin with an introduction to the terms that will be referenced in the later units.  We will then…

The purpose of this course is to provide you with a basic understanding of the principles of microeconomics.  At its core, the study of economics deals with the choices and decisions that have to be made in order to manage scarce resources available to us. Microeconomics is the branch of economics that pertains to decisions made at the individual level, i.e. by individual consumers or individual firms, after evaluating resources, costs, and tradeoffs.  When we talk about “the economy,” then, we are referring to the marketplace or system in which these choices interact with one another.  In this course, we will learn how and why these decisions are made and how they affect one another in the economy. Each of the following units has been designed as a building block, where the concepts you learn in one unit will enable you to understand the material you discover in the next.  By the end of this course, you will have a strong grasp on the major issues that face microeconomists, including consumer and p…

Economics is traditionally divided into two parts: microeconomics and macroeconomics.  The purpose of this course is to provide you with a fundamental understanding of the principles of macroeconomics.  Macroeconomists study how a country’s economy works and try to determine the best choices to improve the overall wellbeing of a nation.  Typical topics include inflation (the overall level of prices), employment, fiscal policy (government taxing and spending), and money and banking (interest rates and lending policies).  Individuals and firms need to consider how macroeconomic events will affect their own prosperity.  To better define macroeconomics, consider its distinction from microeconomics.  Imagine you are attempting to figure out how the price of a certain good (say, bread) has been determined.  Microeconomics would focus on how the supply of and the demand for bread determine its prices.  It would examine factors like the input prices and the consumer's demand in order to determine the curren…

In BUS103: Financial Accounting [1], we learned that firms are required to keep detailed financial records so that organized reports can be distributed to managers, shareholders, and government regulators.  Principles of Finance will focus on what these managers, investors, and government agencies do with this information.  It is an introductory course to various fields of finance and is comparable in content to courses that other institutions label as “corporate finance” or “financial management.” Finance is a broad term; you will find that both managers that compile the financial reports we discussed in financial accounting and stockbrokers working on Wall Street will claim that they work in finance.  So what exactly is finance?  Finance is the science of fund management.  It is distinct from accounting in that, whereas accounting aims at organizing and compiling past information, finance is geared towards deciding what to do with that information. In this course, you will be exposed to a n…

In this course, you will learn about the marketing process and examine the range of marketing decisions that an organization must make in order to sell its products and services. You will also learn how to think like a marketer, discovering that the focus of marketing has always been on the consumer. You will begin to ask, “Who is the consumer of goods and services?” What does the consumer need? What does the consumer want? Marketing is an understanding of how to communicate with the consumer, and is characterized by four activities: Creating products and services that serve consumers Communicating a clear value proposition Delivering products and services in a way that optimizes value Exchanging, or trading, value for those offerings Many people incorrectly believe that marketing and advertising are one in the same. In reality, advertising is just one of many tools used in marketing, which is the process by which firms determine which products to offer, how to price those products, and to whom th…

This course will introduce you to business statistics, or the application of statistics in the workplace. Statistics is a course in the methods for gathering, analyzing, and interpreting data. If you have taken a statistics course in the past, you may find some of the topics in this course familiar. You can apply statistics to any number of fields from anthropology to hedge fund management because many of us best interpret data when it is presented in an organized fashion (as it is with statistics). You can analyze data in any number of forms. Summary statistics, for example, provide an overview of a data set, such as the average score on an exam. However, the average does not always tell the entire story; for example, if the average score is 80, it may be because half of the students received 100s and the other half received 60s. This would present a much different story than if everyone in the class had received an 80, which demonstrates consistency. Statistics provides more than simple averages. In t…