Measurement: Standard Units | Protocol - JoVE

Measurement: Standard Units | Protocol - JoVE

The International System of Units (SI Units). The measurement units for seven fundamental properties (“base units”): length, mass, time, temperature, electric ...

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Standard Enthalpy of Formation | Protocol - JoVE

6.11: Standard Enthalpy of Formation. TABLE OF CONTENTS. X ... Many thermochemical tables list values with a standard state of 1 atm. Because the ΔH of a ...

Standard Units (SI Units) | Introduction to Chemistry - Lumen Learning

Every field of science involves taking measurements, understanding them, ... There are seven basic units in the SI system: the meter (m), the kilogram (kg), the ... you need a consistent way of communicating size, mass, shape, temperature...

Ancient Roman units of measurement - Wikipedia

Length[edit]. The basic unit of Roman linear measurement was the pes or Roman foot (plural: pedes). Investigation of its relation to the English foot ...

Units of Measurement | Boundless Chemistry - Lumen Learning

Science measurements are based on the metric system, so it is important that you ... The kilogram (kg) was originally defined as the mass of a liter (i.e., of one ...

JoVE Science Education > Introduction: Matter and Measurement

According to its composition, the matter can be classified into two broad categories — pure substances and mixtures. A pure substance… Physical and Chemical ...

Crossing Over | Protocol - JoVE

11.4: Crossing Over. Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, ...

Macromolecules | Protocol - JoVE

Almost all biomolecules can be classified into one of the four general categories: carbohydrates, lipids, proteins, and nucleic acids. Carbohydrates. Carbohydrate  ...

Ideal Gas Law | Protocol - JoVE

The ideal gas law is a mathematical equation that relates all of these parameters. ... with an added proportionality constant, the ideal gas constant (R). ... Parameter a will experience larger values for gases with strong intermolecular ...

Ideal Gas Law | Protocol - JoVE

The ideal gas law describes the behavior of most common gases at near-ambient conditions and the tendency of all chemical matter in the dilute limit.

Photosynthesis | Protocol - JoVE

JoVE Lab Manual Lab Bio ... NOTE: In this experiment you will separate pigments from spinach leaves using ... NOTE: In this experiment you will indirectly observe photosynthesis and cellular respiration using a floating leaf disc in a sol...

What are Lipids? | Protocol - JoVE

JoVE publishes peer-reviewed scientific video protocols to accelerate ... Certain classes of lipids, such as fats, phospholipids, and steroids are crucial to all living  ...

Mitosis and Cytokinesis | Protocol - JoVE

During cytokinesis in animal cells, actin filaments form a contractile ring in the plasma membrane to create a cleavage furrow, which eventually pinches the cell  ...

Cell Division | Protocol - JoVE

There are two types of cell division in eukaryotic cells—mitosis and meiosis. Somatic ... from one another via cytokinesis, resulting in two identical daughter cells.

The de Broglie Wavelength | Protocol - JoVE

He predicted that a particle with mass m and velocity v (that is, with linear ... approximately the same as the de Broglie wavelengths of the electrons being aimed ...

Cellular Respiration | Protocol - JoVE

However, since oxidative phosphorylation does not occur, fermentation produces fewer ... Some bacteria carry out lactic acid fermentation and are used to make ...

What is Genetic Engineering? | Protocol - JoVE

Genetic engineering is possible because the genetic code—the way information is encoded by DNA—and the structure of DNA are universal among all life forms.

Social Loafing | Protocol - JoVE

Another way in which a group presence can affect performance is social loafing —the exertion of less effort by a person working together with a group. Social ...

What is Natural Selection? | Protocol - JoVE

Charles Darwin described the process in his 1859 publication, On the Origin of Species: ... For natural selection to occur, there needs to be trait variation.

Polyprotic Acids | Protocol - JoVE

Similarly, monoprotic bases are bases that will accept a single proton. Diprotic acids ... Carbonic acid, H2CO3, is an example of a weak diprotic acid. The first ...

Incidental Encoding | Protocol - JoVE

A great deal of our daily experiences gets encoded into long-term memory incidentally, as life goes by, without us explicitly trying to encode it. For example ...

Atomic Mass | Protocol - JoVE

Thus, one amu is exactly 1/12 of the mass of one carbon-12 atom: 1 amu = 1.6605 × 10−24 g. The Dalton (Da) and the unified atomic mass unit (u) are alternative ...

Calibration Curves | Protocol - JoVE

A calibration curve is created by first preparing a set of standard solutions with ... Samples with measurements that lie outside of the linear range of the plot must ...

Diffusion and Osmosis | Protocol - JoVE

Diffusion in Agar; Movement of Molecules Across a Semi-Permeable Membrane ... Remove the cell shapes from the solutions and observe the depth that the ... HYPOTHESES: In this experiment, the experimental hypothesis is that some of ... as...

Animal Diversity | Protocol - JoVE

JoVE Lab Manual Lab Bio ... Diversity in Kingdom Animalia has led to the classification of 36 distinct phyla, based on their evolutionary lineage. ... Following Cnidaria, there are two phyla of worms, termed Platyhelminthes and Annelida....

X-linked Traits | Protocol - JoVE

One well-studied example of an X-linked trait is color blindness. When a mutation occurs in the genes responsible for red and green color vision in the ...

Limiting Reactant | Protocol - JoVE

Identifying the limiting and excess reactants for a given situation requires ... Stoichiometry indicates that two moles of hydrogen and one mole of oxygen react to ...

Tonicity in Plants | Protocol - JoVE

In hypotonic environments, water enters the cell via osmosis and causes it to swell because there is a higher concentration of solutes inside plant cells than ...

Anatomy of Chloroplasts | Protocol - JoVE

The inner membrane separates the narrow intermembrane space from the aqueous interior of the chloroplast, called the stroma. Within the stroma, another set of ...

Neuron Structure | Protocol - JoVE

18.5: Neuron Structure · Overview. Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. · Structure and ...

Enthalpy of Reaction | Protocol - JoVE

If the ΔH values are known for a reaction, the reverse reaction is the negative value of that ΔH. An exothermic forward reaction would become an endothermic  ...

The Calvin Cycle | Protocol - JoVE

The Calvin-Benson cycle represents the light-independent set of photosynthetic reactions. It uses the adenosine triphosphate (ATP) and nicotinamide-adenine ...

Thermochemical Equations | Protocol - JoVE

The sign of ΔHrxn indicates if the reaction is exothermic or endothermic, as written. In the following equation, 1 mole of hydrogen gas and 1/2 mole of oxygen  ...

Artificial Selection | Protocol - JoVE

Artificial Selection and Domestication of Plants and Animals. Humans have taken advantage of natural variation to create a wide variety of domesticated plants and  ...

Types of Chemical Bonds | Protocol - JoVE

Chemical bonding is central to chemistry; it explains how atoms or ions bond together to form molecules. It explains why some bonds are strong and others are  ...

Molecular Orbital Theory I | Protocol - JoVE

The side-by-side overlap of two p orbitals gives rise to a pi (π) bonding molecular orbital and a π* antibonding molecular orbital. Electrons in the π orbital interact ...

Predicting Molecular Geometry | Protocol - JoVE

The following procedure uses VSEPR theory to determine the electron pair geometries and the molecular structures: Write the Lewis structure of the molecule or ...

Lysogenic Cycle of Bacteriophages | Protocol - JoVE

In contrast to the lytic cycle, phages infecting bacteria via the lysogenic cycle do not immediately kill their host cell. Instead, they combine their genome with the ...

The Fluid Mosaic Model | Protocol - JoVE

The model depicts the structure of the plasma membrane with a variety of components, which include phospholipids, proteins, and carbohydrates. These integral ...

Predator-Prey Interactions | Protocol - JoVE

Predator and prey population sizes can increase and decrease in cycles, due in part to predation. For instance, the lynx and snowshoe hare populations in ...

The Atomic Theory of Matter | Protocol - JoVE

2.1: The Atomic Theory of Matter · Matter is composed of exceedingly small particles called atoms. · An element consists of only one type of atom, which has a mass ...

Ideal Gas Law | Protocol (Translated to Spanish) - JoVE

Ley del Gas ideal. Previous Video Next Video. The JoVE video player is compatible with HTML5 and Adobe Flash. Older browsers that do not support HTML5 ...

Clausius-Clapeyron Equation | Protocol - JoVE

11.9: Clausius-Clapeyron Equation · Eq1. where ΔHvap is the enthalpy of vaporization for the liquid, R is the gas constant, and A is a constant whose value  ...

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