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face in Biological Definition

Golgi apparatus

... vesicle, (8) Golgi apparatus , (9) Cis face of the Golgi apparatus, (10) Trans face of the Golgi apparatus, (11) Cisternae of the ... cisternae and similar vesicles. The cis face is the side facing the ER, the medial region is ...

Endoplasmic reticulum

... that are transported. (7) Transport vesicle. (8) Golgi apparatus. (9) Cis face of the Golgi apparatus. (10) Trans face of the Golgi apparatus. (11) Cisternae of the Golgi apparatus. The ER ...

Lipid

... biological membranes. In an aqueous milieu, the heads of lipids tend to face the polar, aqueous environment, while the hydrophobic tails tend to ... forming a lipid bilayer (1) or a micelle (2). The polar heads ( P ) face the aqueous environment. Micelles form when single-tailed amphiphilic ...

Lipid bilayer

... layers of lipid molecules arranged so that their hydrocarbon tails face one another to form the oily bilayer core, while their electrically charged or polar heads face the watery or "aqueous" solutions on either side of the membrane. ...

Endoplasmic reticulum

... that are transported. (7) Transport vesicle. (8) Golgi apparatus. (9) Cis face of the Golgi apparatus. (10) Trans face of the Golgi apparatus. (11) Cisternae of the Golgi apparatus. The ER ...

Endoplasmic reticulum

... that are transported. (7) Transport vesicle. (8) Golgi apparatus. (9) Cis face of the Golgi apparatus. (10) Trans face of the Golgi apparatus. (11) Cisternae of the Golgi apparatus. The ER ...

Skin

... a surface area of between 1.5-2.0 square metres. The skin on a person's face is seen by people that person interacts with. For some people, then, ... and cosmetics are made to deal with the appearance of the person's face and condition of the skin, such as pore control and blackhead ...

Endoplasmic reticulum

... that are transported. (7) Transport vesicle. (8) Golgi apparatus. (9) Cis face of the Golgi apparatus. (10) Trans face of the Golgi apparatus. (11) Cisternae of the Golgi apparatus. The ER ...

Anatomy

... tissue Lymphoid tissue Externally visible parts of the human body: Abdomen Arm Back Buttock Chest Ear Eye face Genitals Head Joint Leg Mouth Neck Scalp Skin Teeth Tongue Other anatomic terms (not classified): ...

DNA

... as mutations . The process known as PCR mimics this process in vitro in a nonliving system. Because pairing causes the nucleotide bases to face the helical axis, the sugar and phosphate groups of the nucleotides run along the outside; the two chains they form are sometimes called the " ...

Cell membrane

... undergirds the cell membrane and provides anchoring points for integral membrane proteins. Anchoring restricts them to a particular cell face or surface--for example, the "apical" surface of epithelial cells that line the vertebrate gut --and limits how far they may diffuse within the ...

Ion channel

... neurotransmitter release in pre-synaptic endings . Ligand-gated channels open in response to a specific ligand molecule on the external face of the membrane in which the channel resides. Examples include the "nicotinic" Acetylcholine receptor , AMPA receptor and other neurotransmitter ...

Muscle

... leg Vertebrates move muscles in response to voluntary and autonomic signals from the brain . Deep muscles, superficial muscles, muscles of the face and internal muscles all correspond with dedicated regions in the brain. In addition, muscles react to reflexive nerve stimuli that do not always ...

Natural selection

... predators, food sources, abiotic stress , physical environment, and so on. When members of a species become separated, such as geographically, they face different environments, and tend to develop in different directions. After a long period of time, their traits will have developed along different ...

Olfaction

... the vomer, between the nose and the mouth. Snakes use it to smell prey, sticking their tongue out and touching it to the organ. Some mammals make a face called flehmen to direct air to this organ. In humans, the detection of pheromones is subliminal. These subliminal odor messages may transmit ...

Cell membrane

... undergirds the cell membrane and provides anchoring points for integral membrane proteins. Anchoring restricts them to a particular cell face or surface--for example, the "apical" surface of epithelial cells that line the vertebrate gut --and limits how far they may diffuse within the ...

Signal transduction

... . Types of signals Extracellular Signal transduction usually involves the binding of "extracellular" signaling molecules to receptors that face outwards from the membrane and trigger events inside. This takes place via a change in the shape or conformation of the receptor which occurs when ...

Transmembrane protein

... protrude into the watery environment inside and outside the cell or compartment. Transmembrane proteins often have their N-terminal on the exoplasmic face and their C-terminal on the cytoplasmic face. Many transmembrane proteins have multiple membrane spanning alpha helix segments which anchors them ...

Optical spectrum

... bands dispersing from white sunlight passing through a prism . Explanation of Newton's experiment When a beam of sunlight strikes the face of a glass prism at an angle, some is reflected and some of the beam passes into the glass. All light travels at the same speed in a vacuum, but in ...
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