sense
1. (Science: physiology) A faculty, possessed by animals, of perceiving external objects by means of impressions made upon certain organs (sensory or sense organs) of the body, or of perceiving changes in the condition of the body; as, ...
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Although in most cases sense DNA refers to the DNA strand whose sequences code for proteins, in some cases sense/antisense (e.g., for PCR primers) are arbitrarily used to distinguish the two strands of the double-stranded DNA.
A codon for which no normal tRNA molecule exists. The presence of a nonsense codon causes termination of translation (ending polypeptide chain synthesis). There are three nonsense codons are called amber(UAG) ochre(UAA) and opal (UGA).
Sense, when applied in a molecular biology context, is a general concept used to compare the polarity of nucleic acid molecules, such as DNA or RNA, to other nucleic acid molecules. Depending on the context within molecular...
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Nonsense Mutation
A nonsense mutation is the substitution of a single base pair that leads to the appearance of a stop codon where previously there was a codon specifying an amino acid.
Antisense RNA
Messenger RNA (mRNA) is single-stranded. Its sequence of nucleotides is called "sense" because it results in a gene product (protein).
THE ORGANS of the senses may be divided into (a) those of the special senses of taste, smell, sight, and hearing, and (b) those associated with the general sensations of heat, cold, pain, pressure, etc.
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Sense strand
The strand of DNA that has the same nucleotide sequence as the mRNA (except the DNA has T where the RNA has U residues). Check out the supplemental resources for a diagram.
Sense
For viruses with RNA as their nucleic acid, the strands are said to be either positive-sense (called the plus-strand) or negative-sense (called the minus-strand) depending on whether it is complementary to viral mRNA.
Sense strand The DNA strand in a gene which has the same sequence as the primary transcript. (see coding strand) ...
missense mutation
The most common type of mutation involving a base-pair substitution within a gene that changes a codon, but the new codon makes sense in that it still codes for an amino acid.
mitochondrial matrix ...
Antisense RNA. A complementary RNA sequence that binds to a naturally occurring (sense) mRNA molecule, thus blocking its translation. (See RNA.)
Asexual reproduction. Nonsexual means of reproduction which can include grafting and budding.
Antisense RNA
An RNA molecule that can hybridize to an mRNA molecule. Hybridization of an antisense RNA molecule to the translation start sites on an mRNA prevents the initiation of translation.
antisense A construct in which a gene is fused to a promoter in 3' to 5' orientation. The resulting transcript is an 'antisense' transcript. Used in plants to suppress the expression of the endogenous gene.
Antisense DNA/RNA: Single stranded nucleic acid that is complementary to the coding/sense strand of a gene. It is then also complementary to the mRNA produced from the same gene.
Antisense Nucleic acid that has a sequence exactly opposite to an mRNA molecule made by the body; binds to the mRNA molecule to prevent a protein from being made.
See also: transcription ...
somatic senses All senses except vision, hearing, taste, and smell; include pain, temperature, and pressure.
sense of taste
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby
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Antisense strand
The noncoding strand of the DNA double helix that serves as the template for mRNA synthesis.
Related Terms:
Strand
It is customary in genetics to use strand for chromatid.
The senses we have discussed so far have been located in one specific location, such as the eye, or nose. However, your sense of touch is not restricted to one small area, but covers your entire body.
The senses of taste and smell are both received by chemoreceptors. Both taste and smell require that the chemical stimuli they process are dissolved in fluid. The receptor cells of the tongue and nose are specialized to receive only certain chemicals.
Antisense RNA can be injected into eukaryotic cells as a control mechanism.
Types of control in Eukaryotes ...
Anti-sense strand: See discussion under "Sense strand".
AP-1 site: The binding site on DNA at which the transcription "factor" AP-1 binds, thereby altering the rate of transcription for the adjacent gene.
Anti-sense technology
- The use of an RNA molecule to block gene expression by interfering with protein production. This technique is used commercially in tomatoes to slow ripening for better shipping and longer shelf life.
Anthocyanins ...
In one sense, there are certain crops like corn, wheat, and rice that we know no other way to grow them efficiently except to grow them by themselves.
statocyst Sense organ of equilibrium; a fluid-filled cellular cyst containing one or more granules (statoliths) used to sense direction of gravity.
statolith Small calcareous body resting on tufts of cilia in the statocyst.
statolith See statocyst.
But in another sense, nothing could be further from the truth. Evolution is a problem-solving process whose power we are only beginning to understand and exploit; despite this, it is already at work all around us, ...
Missense mutation -- a change in the base sequence of a gene that alters or eliminates a protein. Mitochondrial DNA -- the mitochondrial genome consists of a circular DNA duplex, with 5 to 10 copies per organelle.
Missense mutations in presenilin 1 (PS1) and presenilin 2 (PS2) are associated with early-onset familial Alzheimer's disease which displays an accelerated deposition of amyloid plaques and neurofibrillary tangles.
(in the broadest sense, including organisms usually placed in the Domain Archaea).
Photosynthesis, chemosynthesis, decomposer, parasitic.
Single-celled, filament, or colony of cells; all prokaryotic.
Gustation The sense of taste.
Gustducin An α subunit of a G protein that is primarily expressed in taste buds and is associated with 7TM bitter and sweet receptors.
The nervous system is about action and senses. Animals are able to sense what is going on in their surroundings and do something in reaction to that input. If you see a bike that might hit you, you jump out of the way.
The term biology in its modern sense appears to have been introduced independently by Karl Friedrich Burdach (1800), Gottfried Reinhold Treviranus (Biologie oder Philosophie der lebenden Natur, 1802), and Jean-Baptiste Lamarck (Hydrog¨¦ologie, 1802).
Formed by combining the Greek βίος (bios), meaning 'life', and λόγος (logos), meaning 'word', the word "biology" in its modern sense seems to have been introduced independently by Gottfried Reinhold ...
In this sequence of microscope images, an amoeboid human neutrophil senses, moves toward and ingests an ovoid yeast.
Often, the abbreviation makes perfect sense (C for carbon) and sometimes it does not (Na for sodium). There is an abundance of elements on earth and in living systems, but only 4 elements make up 99% of living organisms.
Virus Structure - Viruses are not alive in the strict sense of the word, but reproduce and have an intimate, if parasitic, relationship with all living organisms.
(The technical use of the term here follows the normal English sense of being able or fit.) Dorsal neural ectoderm in amphibian embryos consists of competent cells which if induced can form the neural plate.
Experimentation is one of the best ways to learn about biology. By taking a hands-on learning approach, students can get a real sense of biology concepts. The following resources provide information on experiments that can be done in a lab or at home.
fungicide - chemical or physical agent that kills or inhibits development of fungus spores or mycelium (or when used in a broad sense bacteria).
An in vivo imaging technique that sends out femtosecond infrared pulses and uses optical interference to sense reflections from tissue inhomogeneities.
OPTICAL TWEEZERS ...
brain -- Collection of nerve cells usually located at the anterior end of an animal, when present at all. The nerves coordinate information gathered by sense organs, locomotion, and most internal body activities.
olfactory nerve
arises from the olfactory bulb and is associated with receiving and transmitting signals concerning the sense of smell.
omentum (pl. omenta)
A membrane that joins one internal organ to another.
 See also: Trans, Organ, Human, Cells, Biology
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