axis in Biological Definition

DNA

... in which the strands turn about the helical axis like a mirror image of the B form. Table of ... 10.7 10.0 12 Inclination of bp to axis +19 -1.2 -9 Rise/bp along axis 2.3 3.32 3.8 Pitch/turn of helix ...

Morphogenesis

... 1 Anterior-posterior axis patterning in Drosophila 1.1 Maternal ... 2 See also Anterior-posterior axis patterning in Drosophila Morphogenesis of the ... organisms sometimes use similar mechanisms for axis formation, although the relative importance of ...

Morphogenesis

... 1 Anterior-posterior axis patterning in Drosophila 1.1 Maternal ... 2 See also Anterior-posterior axis patterning in Drosophila Morphogenesis of the ... organisms sometimes use similar mechanisms for axis formation, although the relative importance of ...

Computed axial tomography

... to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word " tomography " is derived from the Greek tomos (slice) and graphia (describing). Although most common in healthcare, ...

Mitosis

... allowing them to separate. They are pulled apart by the microtubules, towards the respective centrioles to which they are attached. Next, the spindle axis elongates, driving the centrioles (and the set of chromosomes to which they are attached) apart to opposite ends of the cell. These two stages are ...

Magnetic resonance imaging

... a molecule inside the axon of a neuron has a low probability to cross a myelin membrane. Therefore the molecule will move principally along the axis of the neural fiber. Conversely if we know that molecules locally diffuse principally in one direction we can make the assumption that this ...

Mitosis

... allowing them to separate. They are pulled apart by the microtubules, towards the respective centrioles to which they are attached. Next, the spindle axis elongates, driving the centrioles (and the set of chromosomes to which they are attached) apart to opposite ends of the cell. These two stages are ...

Tobacco mosaic virus

... The protein coat consists of 158 aminoacids which are assembled into four main alpha-helices, which are joined by a prominent loop proximal to the axis of the virion. The RNA is located at a radius of ~4nm and is protected from the action of cellular enzymes by the coat protein. There are three RNA ...

Tobacco mosaic virus

... The protein coat consists of 158 aminoacids which are assembled into four main alpha-helices, which are joined by a prominent loop proximal to the axis of the virion. The RNA is located at a radius of ~4nm and is protected from the action of cellular enzymes by the coat protein. There are three RNA ...

Wavelength

... commonly designated by the Greek letter lambda (λ). In a sine wave, the wavelength is the distance between peaks: The x axis represents distance, and I would be some varying quantity (for instance air pressure for a sound wave or strength of the electric or magnetic ...