| slovo | definícia |
photos
(encz) | photos,fotky n: pl. Zdeněk Brož |
photos
(encz) | photos,fotografie n: pl. Zdeněk Brož |
Photos
(gcide) | Photo \Pho"to\ (f[=o]"t[-o]), n.; pl. Photos (f[=o]"t[-o]z).
A contraction of Photograph. [Colloq.]
[1913 Webster] |
| | podobné slovo | definícia |
bacterial photosynthesis
(encz) | bacterial photosynthesis,bakteriální fotosyntéza [eko.] RNDr. Pavel
Piskač |
nonphotosynthetic
(encz) | nonphotosynthetic, adj: |
photos
(encz) | photos,fotky n: pl. Zdeněk Brožphotos,fotografie n: pl. Zdeněk Brož |
photosensitise
(encz) | photosensitise,fotosenzitizovat v: Clock |
photosensitive
(encz) | photosensitive,citlivý na světlo adj: Zdeněk Brožphotosensitive,fotosenzitivní adj: Zdeněk Brož |
photosensitivity
(encz) | photosensitivity,citlivost na světlo n: Zdeněk Brož |
photosensitize
(encz) | photosensitize,fotosenzitizovat v: Clock |
photosphere
(encz) | photosphere,fotosféra n: Zdeněk Brož |
photostat
(encz) | Photostat, |
photostatic
(encz) | photostatic, |
photosynthesis
(encz) | photosynthesis,fotosyntéza n: [bio.] |
photosynthesis of plants
(encz) | photosynthesis of plants,fotosyntéza rostlin [eko.] RNDr. Pavel Piskač |
photosynthesize
(encz) | photosynthesize,fotosyntetizovat v: Clock |
photosynthetic
(encz) | photosynthetic,fotosyntetický adj: Zdeněk Brož |
photosynthetic assimilation
(encz) | photosynthetic assimilation,fotosyntetická asimilace [eko.] RNDr. Pavel
Piskač |
photosynthetically
(encz) | photosynthetically,fotosynteticky adv: Zdeněk Brož |
take photos of
(encz) | take photos of,fotografovat take photos of,vyfotografovat |
Photoscope
(gcide) | Photoscope \Pho"to*scope\, n. [Photo- + -scope.] (Physics)
Anything employed for the observation of light or luminous
effects.
[1913 Webster] |
Photoscopic
(gcide) | Photoscopic \Pho`to*scop"ic\, a.
Of or pertaining to the photoscope or its uses.
[1913 Webster] |
Photosculpture
(gcide) | Photosculpture \Pho`to*sculp"ture\, n. [Photo- + sculpture.]
A process in which, by means of a number of photographs
simultaneously taken from different points of view on the
same level, rough models of the figure or bust of a person or
animal may be made with great expedition.
[1913 Webster] |
Photosphere
(gcide) | Photosphere \Pho"to*sphere\, n. [Photo- + sphere.]
A sphere of light; esp., the luminous envelope of the sun.
[1913 Webster] |
Photospheric
(gcide) | Photospheric \Pho`to*spher"ic\, a.
Of or pertaining to the photosphere.
[1913 Webster] |
Photosynthesis
(gcide) | Photosynthesis \Pho`to*syn"the*sis\, n. (Plant Physiol.)
The process of constructive metabolism in which green plants
utilize the energy of sunlight to manufacture carbohydrates
from carbon dioxide and water in the presence of chlorophyll.
It was formerly called assimilation, but this is now
commonly used as in animal physiology. --
Pho`to*syn*thet"ic, a. -- Pho`to*syn*thet"ic*al*ly, adv.
[Webster 1913 Suppl.]
Note: In green plants water is absorbed by the roots and
carried to the leaves by the xylem, and carbon dioxide
is obtained from air that enters the leaves through the
stomata and diffuses to the cells containing
chlorophyll. The green pigment chlorophyll is uniquely
capable of converting the active energy of light into a
latent form that can be stored (in food) and used when
needed.
The initial process in photosynthesis is the
decomposition of water (H2O) into oxygen, which is
released, and hydrogen; direct light is required for
this process. The hydrogen and the carbon and oxygen of
carbon dioxide (CO2) are then converted into a series
of increasingly complex compounds that result finally
in a stable organic compound, glucose (C6H12O6 ), and
water. This phase of photosynthesis utilizes stored
energy and therefore can proceed in the dark. The
simplified equation used to represent this overall
process is 6CO2+12H2O+energy=C6H12O6+6O2+6H2 O. In
general, the results of this process are the reverse of
those in respiration, in which carbohydrates are
oxidized to release energy, with the production of
carbon dioxide and water.
The intermediary reactions before glucose is formed
involve several enzymes, which react with the coenzyme
ATP (see adenosine triphosphate ) to produce various
molecules. Studies using radioactive carbon have
indicated that among the intermediate products are
three-carbon molecules from which acids and amino
acids, as well as glucose, are derived.
--http://www.infoplease.com/ce6/sci/A0860378.html
Note: The role of chlorophyll
Chlorophyll contains a hydrophyllic head group and a
hydrophobic tail region. A magnesium atom is held in
the center of a cyclic, conjugated double bond
porphyrin ring which is responsible for absorbing red
light. (There also is an absorption band in the blue.
Thus red and blue are absorbed and green passes
through, giving plants a characteristic green color.)
Light is absorbed by antenna chlorophyll molecules,
then transferred to the reaction center chlorophylls.
Some hundreds of antenna chlorophyll molecules transfer
energy to a reaction center, with transfer times of
about 10-10 sec from the edge of the unit to the
center.
The energy from light is used to pump H+ ions from the
stroma into the thylakoid space and to reduce NADP+ to
NADPH. Flow of H+ back into the stroma releases energy
which is used to phosphorylate ADP to ATP. The
chemiosmotic coupling is working here in a similar way
to the mechanism of ATP generation used in
mitochondria.
Carbon Fixation Carbon fixation is catalyzed by
ribulose bisphosphate carboxylase (RuBP carboxylase),
the world's most abundent enzyme.
The
Calvin cycle combines three carbon dioxide molecules into
one molecule of three carbon glyceraldehyde 3-phosphate.
Some plants, particularly many which live in hot, dry
climates, have a mechanism for storing carbon dioxide by
combining it with a three carbon molecule to form a four
carbon molecule. This pathway is known as the C4 or
Hatch-Slack pathway.
--http://fig.cox.miami.edu/Faculty/Tom/bil255/bil255sum98/17_photo.html
[PJC] Phototaxis |
Photosynthetic
(gcide) | Photosynthesis \Pho`to*syn"the*sis\, n. (Plant Physiol.)
The process of constructive metabolism in which green plants
utilize the energy of sunlight to manufacture carbohydrates
from carbon dioxide and water in the presence of chlorophyll.
It was formerly called assimilation, but this is now
commonly used as in animal physiology. --
Pho`to*syn*thet"ic, a. -- Pho`to*syn*thet"ic*al*ly, adv.
[Webster 1913 Suppl.]
Note: In green plants water is absorbed by the roots and
carried to the leaves by the xylem, and carbon dioxide
is obtained from air that enters the leaves through the
stomata and diffuses to the cells containing
chlorophyll. The green pigment chlorophyll is uniquely
capable of converting the active energy of light into a
latent form that can be stored (in food) and used when
needed.
The initial process in photosynthesis is the
decomposition of water (H2O) into oxygen, which is
released, and hydrogen; direct light is required for
this process. The hydrogen and the carbon and oxygen of
carbon dioxide (CO2) are then converted into a series
of increasingly complex compounds that result finally
in a stable organic compound, glucose (C6H12O6 ), and
water. This phase of photosynthesis utilizes stored
energy and therefore can proceed in the dark. The
simplified equation used to represent this overall
process is 6CO2+12H2O+energy=C6H12O6+6O2+6H2 O. In
general, the results of this process are the reverse of
those in respiration, in which carbohydrates are
oxidized to release energy, with the production of
carbon dioxide and water.
The intermediary reactions before glucose is formed
involve several enzymes, which react with the coenzyme
ATP (see adenosine triphosphate ) to produce various
molecules. Studies using radioactive carbon have
indicated that among the intermediate products are
three-carbon molecules from which acids and amino
acids, as well as glucose, are derived.
--http://www.infoplease.com/ce6/sci/A0860378.html
Note: The role of chlorophyll
Chlorophyll contains a hydrophyllic head group and a
hydrophobic tail region. A magnesium atom is held in
the center of a cyclic, conjugated double bond
porphyrin ring which is responsible for absorbing red
light. (There also is an absorption band in the blue.
Thus red and blue are absorbed and green passes
through, giving plants a characteristic green color.)
Light is absorbed by antenna chlorophyll molecules,
then transferred to the reaction center chlorophylls.
Some hundreds of antenna chlorophyll molecules transfer
energy to a reaction center, with transfer times of
about 10-10 sec from the edge of the unit to the
center.
The energy from light is used to pump H+ ions from the
stroma into the thylakoid space and to reduce NADP+ to
NADPH. Flow of H+ back into the stroma releases energy
which is used to phosphorylate ADP to ATP. The
chemiosmotic coupling is working here in a similar way
to the mechanism of ATP generation used in
mitochondria.
Carbon Fixation Carbon fixation is catalyzed by
ribulose bisphosphate carboxylase (RuBP carboxylase),
the world's most abundent enzyme.
The
Calvin cycle combines three carbon dioxide molecules into
one molecule of three carbon glyceraldehyde 3-phosphate.
Some plants, particularly many which live in hot, dry
climates, have a mechanism for storing carbon dioxide by
combining it with a three carbon molecule to form a four
carbon molecule. This pathway is known as the C4 or
Hatch-Slack pathway.
--http://fig.cox.miami.edu/Faculty/Tom/bil255/bil255sum98/17_photo.html
[PJC] Phototaxis |
Photosynthetically
(gcide) | Photosynthesis \Pho`to*syn"the*sis\, n. (Plant Physiol.)
The process of constructive metabolism in which green plants
utilize the energy of sunlight to manufacture carbohydrates
from carbon dioxide and water in the presence of chlorophyll.
It was formerly called assimilation, but this is now
commonly used as in animal physiology. --
Pho`to*syn*thet"ic, a. -- Pho`to*syn*thet"ic*al*ly, adv.
[Webster 1913 Suppl.]
Note: In green plants water is absorbed by the roots and
carried to the leaves by the xylem, and carbon dioxide
is obtained from air that enters the leaves through the
stomata and diffuses to the cells containing
chlorophyll. The green pigment chlorophyll is uniquely
capable of converting the active energy of light into a
latent form that can be stored (in food) and used when
needed.
The initial process in photosynthesis is the
decomposition of water (H2O) into oxygen, which is
released, and hydrogen; direct light is required for
this process. The hydrogen and the carbon and oxygen of
carbon dioxide (CO2) are then converted into a series
of increasingly complex compounds that result finally
in a stable organic compound, glucose (C6H12O6 ), and
water. This phase of photosynthesis utilizes stored
energy and therefore can proceed in the dark. The
simplified equation used to represent this overall
process is 6CO2+12H2O+energy=C6H12O6+6O2+6H2 O. In
general, the results of this process are the reverse of
those in respiration, in which carbohydrates are
oxidized to release energy, with the production of
carbon dioxide and water.
The intermediary reactions before glucose is formed
involve several enzymes, which react with the coenzyme
ATP (see adenosine triphosphate ) to produce various
molecules. Studies using radioactive carbon have
indicated that among the intermediate products are
three-carbon molecules from which acids and amino
acids, as well as glucose, are derived.
--http://www.infoplease.com/ce6/sci/A0860378.html
Note: The role of chlorophyll
Chlorophyll contains a hydrophyllic head group and a
hydrophobic tail region. A magnesium atom is held in
the center of a cyclic, conjugated double bond
porphyrin ring which is responsible for absorbing red
light. (There also is an absorption band in the blue.
Thus red and blue are absorbed and green passes
through, giving plants a characteristic green color.)
Light is absorbed by antenna chlorophyll molecules,
then transferred to the reaction center chlorophylls.
Some hundreds of antenna chlorophyll molecules transfer
energy to a reaction center, with transfer times of
about 10-10 sec from the edge of the unit to the
center.
The energy from light is used to pump H+ ions from the
stroma into the thylakoid space and to reduce NADP+ to
NADPH. Flow of H+ back into the stroma releases energy
which is used to phosphorylate ADP to ATP. The
chemiosmotic coupling is working here in a similar way
to the mechanism of ATP generation used in
mitochondria.
Carbon Fixation Carbon fixation is catalyzed by
ribulose bisphosphate carboxylase (RuBP carboxylase),
the world's most abundent enzyme.
The
Calvin cycle combines three carbon dioxide molecules into
one molecule of three carbon glyceraldehyde 3-phosphate.
Some plants, particularly many which live in hot, dry
climates, have a mechanism for storing carbon dioxide by
combining it with a three carbon molecule to form a four
carbon molecule. This pathway is known as the C4 or
Hatch-Slack pathway.
--http://fig.cox.miami.edu/Faculty/Tom/bil255/bil255sum98/17_photo.html
[PJC] Phototaxis |
nonphotosynthetic
(wn) | nonphotosynthetic
adj 1: not photosynthetic [ant: photosynthetic] |
photosensitise
(wn) | photosensitise
v 1: make (an organism or substance) sensitive to the influence
of radiant energy and especially light [syn:
photosensitize, photosensitise] |
photosensitive
(wn) | photosensitive
adj 1: sensitive to visible light; "photographic film is light-
sensitive" [syn: light-sensitive, photosensitive] |
photosensitivity
(wn) | photosensitivity
n 1: sensitivity to the action of radiant energy [syn:
photosensitivity, radiosensitivity] |
photosensitize
(wn) | photosensitize
v 1: make (an organism or substance) sensitive to the influence
of radiant energy and especially light [syn:
photosensitize, photosensitise] |
photosphere
(wn) | photosphere
n 1: the intensely luminous surface of a star (especially the
sun) |
photostat
(wn) | photostat
n 1: a photocopy made on a Photostat machine
2: a duplicating machine that makes quick positive or negative
copies directly on the surface of prepared paper [syn:
Photostat, Photostat machine]
v 1: make a copy by means of a Photostat device |
photostat machine
(wn) | Photostat machine
n 1: a duplicating machine that makes quick positive or negative
copies directly on the surface of prepared paper [syn:
Photostat, Photostat machine] |
photosynthesis
(wn) | photosynthesis
n 1: synthesis of compounds with the aid of radiant energy
(especially in plants) |
photosynthetic
(wn) | photosynthetic
adj 1: relating to or using or formed by photosynthesis [ant:
nonphotosynthetic] |
photoshop
(foldoc) | Photoshop
An image manipulation program by {Adobe
Systems, Inc.}.
(http://adobe.com/Apps/Photoshop.html).
[Summary?]
(1995-07-05)
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