For years, researchers have struggled to understand how emotions are formed and processed by the brain. Now, neuroscientist Kevin LaBar and his graduate students at Duke University are using a virtual reality room to study how the brain...

RNAi: Gene Regulation via miRNAs & siRNAs

Introducing electrophilic aromatic substitution.

During this video lesson we will learn the three ways to write a ratio. We will learn how to determine a rate and a unit rate. We will also learn how to simplify a complex rate to find the unit rate. We will also complete ratio tables...

This video is a lecture on statistical hypothesis testing using the example of binomial distribution, with a focus on how to conduct a two-tailed test. The lecturer explains how to set up the random variables, null and alternative...

We are used to using a theory like VSEPR theory to predict molecular geometry, but unfortunately with coordination compounds, things are not so simple, because of those pesky d orbitals on the central metal atom. Crystal field theory is...

We learned about gene expression in biochemistry, which is comprised of transcription and translation, and referred to as the "central dogma" of molecular biology. But how is this process regulated? How does a cell know which genes to...

Genetic Expression Set: 4. This clip takes a detailed look at the complicated process of genetic transcription.

👉 Learn how to simplify complex fractions. To simplify complex fractions having the addition/subtraction of more than one fractions in the numerator or/and in the denominator we first evaluate the numerator or/and the denominator...

Most transition metal cations can do something interesting in solution, they can interact with specific ligands to form complex ions. These coordinate covalent bonds are new territory, so let's get a mini introduction to inorganic...

Explain the concept of different ecosystem structures and functions and the correlations between them.

Learn how to add/subtract rational expressions with trinomials in the denominator. When adding or subtracting two or more rational expressions with common denominators, we add or subtract only the numerator while we keep the denominator...

Verbs can be transitive, intransitive, ditransitive, verbs that could also appear with prepositional phrases as their complement, there can be phrasal verbs, and finally there can be complex transitive ones. These ones look like they...

This video provides a clear explanation of how to multiply and divide fractions using simple processes. The presenter demonstrates how to multiply fractions by multiplying the numerators and denominators, and how to simplify complex...

👉 Learn how to simplify expressions using the quotient rule and the negative exponent rule of exponents. The quotient rule of exponents states that the quotient of powers with a common base is equivalent to the power with the common base...

Photosystem I Functions: Electron Flow and Function

This video looks at special interest groups, the coverage of federal affairs in the media, the writing of legislation, the role of committees and the process of turning bills into laws. The Legislative Branch Of Government. Part 4

Use helper method to sort and search through an array.
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This clip is from the chapter "Arrays" of the series "Complete Java SE 8 Developer Bootcamp".In this section, author details benefits of using various types of arrays...

The video is a brief introduction to the structure and functions of the brain, as well as the methods used to investigate and understand it. The narrator explains the different regions of the brain and their associated functions, how the...

Students will learn why photosynthesis is so important to us. The different plant structures and compounds involved in photosynthesis and transpiration are highlighted. Beyond photosynthesis, plant responses to certain stimuli and...

Acre is the holiest city of the Baha'i Faith, and as such receives many Baha'i pilgrims. The city was known as Ptolemais during the Hellenistic and Roman-Byzantine periods. During the Crusades it was known as St. Jean d'Acre after the...

Chichen Itza was one of the largest Maya cities and it was likely to have been one of the mythical great cities, or Tollans, referred to in later Mesoamerican literature. The city may have had the most diverse population in the Maya...

The villa was constructed at Tibur (modern-day Tivoli) as a retreat from Rome for Roman Emperor Hadrian during the second and third decades of the 2nd century AD. Hadrian is said to have disliked the palace on the Palatine Hill in Rome,...

What you eat after working out can make a difference in how your body recovers. Consuming the right types of snacks after exercising can help to replenish your energy, build muscle mass, and burn fat. Listen to this interview with a...