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If oxygen is present in the cell, many organisms will bypass fermentation and undergo cellular respiration ; however, facultative anaerobic organisms will both ferment and undergo respiration in the presence of oxygen.
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If and oxygen
If the Af bond is linear then there are three reasonable positions for the hydrogen atoms: ( 1 ) The hydrogen atoms are centered and hence all lie on a sheet midway between the oxygen sheets ; ;
If the combustion takes place using air as the oxygen source, the nitrogen can be added to the equation, as and although it does not react, to show the composition of the flue gas:
If oxygen saturations are low, supplemental oxygen should be provided.
If an explosive molecule contains just enough oxygen to convert all of its carbon to carbon dioxide, all of its hydrogen to water, and all of its metal to metal oxide with no excess, the molecule is said to have a zero oxygen balance.
If buried on hot coals or ashes, the heat can kill pathogens, the dry ash can desiccate, and the earth can block oxygen and further contamination.
If water is evaporated too quickly, the membrane dries, resistance across it increases, and eventually it will crack, creating a gas " short circuit " where hydrogen and oxygen combine directly, generating heat that will damage the fuel cell.
If oxygen delivery to cells is insufficient for the demand ( hypoxia ), hydrogen will be shifted to pyruvic acid converting it to lactic acid.
If superoxide ion associated to Fe < sup > 3 +</ sup > is protonated the hemoglobin iron will remain oxidized and incapable of binding oxygen.
If un-aerated, the solution level is kept low enough that enough roots are above the solution so they get adequate oxygen.
If a hellbender ends up in an area of slowly moving water, not enough water will pass over its skin in a given time period, making it difficult to garner enough oxygen to support necessary respiratory functions.
If there is water, that means there is oxygen.
If oxygen, that means we can breathe.
If the core of the star is not too massive ( less than approximately 1. 4 solar mass, taking into account mass loss that has occurred by this time ), it may then form a white dwarf ( possibly surrounded by a planetary nebula ) as described above for less massive stars, with the difference that the white dwarf is composed chiefly of oxygen, neon, and magnesium.
If a red giant has insufficient mass to generate the core temperatures required to fuse carbon, around 1 billion K, an inert mass of carbon and oxygen will build up at its center.
If the bacteria possess catalase ( i. e., are catalase-positive ), when a small amount of bacterial isolate is added to hydrogen peroxide, bubbles of oxygen are observed.
If Theia had been a separate proto-planet, it probably would have had a different oxygen isotopic signature than Earth, as would the ejected mixed material.
If the sedimentation rate is low ( about 1 cm / kyr ), the organic carbon content is low ( about 1 % ), and oxygen is abundant, aerobic bacteria can use up all the organic matter in the sediments faster than oxygen is depleted, so lower-energy electron acceptors are not used.
If this was the case, Earth's free oxygen may have been nearly or totally depleted during a severe ice age circa 750 to 580 million years ago ( mya ).
If corrosion occurs, it occurs on the outside of the wire, not on the gas-tight contact where oxygen cannot penetrate to form oxides.
If this happens to such a degree that the patient cannot draw enough oxygen from his or her environment to maintain cellular respiration, then the victim may need supplemental oxygen.
If this is done through a pocket mask with an oxygen flow, this increases to 40 % oxygen.
If and is
If the circumstances are faced frankly it is not reasonable to expect this to be true.
If his dancers are sometimes made to look as if they might be creatures from Mars, this is consistent with his intention of placing them in the orbit of another world, a world in which they are freed of their pedestrian identities.
If a work is divided into several large segments, a last-minute drawing of random numbers may determine the order of the segments for any particular performance.
If they avoid the use of the pungent, outlawed four-letter word it is because it is taboo ; ;
If Wilhelm Reich is the Moses who has led them out of the Egypt of sexual slavery, Dylan Thomas is the poet who offers them the Dionysian dialectic of justification for their indulgence in liquor, marijuana, sex, and jazz.
If he is the child of nothingness, if he is the predestined victim of an age of atomic wars, then he will consult only his own organic needs and go beyond good and evil.
If it is an honest feeling, then why should she not yield to it??
If he thus achieves a lyrical, dreamlike, drugged intensity, he pays the price for his indulgence by producing work -- Allen Ginsberg's `` Howl '' is a striking example of this tendency -- that is disoriented, Dionysian but without depth and without Apollonian control.
If love reflects the nature of man, as Ortega Y Gasset believes, if the person in love betrays decisively what he is by his behavior in love, then the writers of the beat generation are creating a new literary genre.
If he is good, he may not be legal ; ;
If the man on the sidewalk is surprised at this question, it has served as an exclamation.
If the existent form is to be retained new factors that reinforce it must be introduced into the situation.
If we remove ourselves for a moment from our time and our infatuation with mental disease, isn't there something absurd about a hero in a novel who is defeated by his infantile neurosis??
If many of the characters in contemporary novels appear to be the bloodless relations of characters in a case history it is because the novelist is often forgetful today that those things that we call character manifest themselves in surface behavior, that the ego is still the executive agency of personality, and that all we know of personality must be discerned through the ego.
If he is a traditionalist, he is an eclectic traditionalist.
If our sincerity is granted, and it is granted, the discrepancy can only be explained by the fact that we have come to believe hearsay and legend about ourselves in preference to an understanding gained by earnest self-examination.
If to be innocent is to be helpless, then I had been -- as are we all -- helpless at the start.
If and present
If life and death did not both present themselves to us, there would be no inscrutability.
If he condemns the recent or the present, he condemns the past with no less force.
If possible, he should make an appointment in order that all persons involved may be present.
If an evil which is certain and extensive and immediate may rarely be compensated for by a problematic, speculative, future good, by the same token not every present, certain, and immediate good ( or lesser evil ) that may have to be done will be outweighed by a problematic, speculative, and future evil.
If nectaries are present, they are in the septa of the ovaries rather than at the base of the tepals or stamens.
If the mutated sequence is present in the patient's genome, the probe will bind to it and flag the mutation.
If present, clue cells can be visualized under a microscope.
If more than one wavelength is present ( as is usually the case ), one must sum or integrate over the spectrum of wavelengths present to get the total luminous intensity.
If a naive rendering algorithm is used without any filtering, high frequencies in the image function will cause ugly aliasing to be present in the final image.
If such an eigenvalue is not stable, the dynamics of this eigenvalue will be present in the closed-loop system which therefore will be unstable.
If the level of an attractant remains high, the level of phosphorylation of CheA ( and therefore CheY and CheB ) will remain low, the cell will swim smoothly, and the level of methylation of the MCPs will increase ( because CheB-P is not present to demethylate ).
If multiple symmetry axes are present, they will necessarily intersect at a single point, and this is usually taken to be the center.
If flammable gas mixtures were present, the flame of the Davy lamp burned higher with a blue tinge.
# If not, the obverse and reverse will present two variants of the same design, one with the hoist on the left ( usually considered the obverse side, see flag illustrations ), the other with the hoist on the right ( usually considered the reverse side of the flag ).
If, for some reason, her husband is not present, the woman alone has full rights to do yagna.
If veins were present, they were attacked using fire-setting and the ore removed for crushing and comminution.
If a frictional force ( damping ) proportional to the velocity is also present, the harmonic oscillator is described as a damped oscillator.
If an external time dependent force is present, the harmonic oscillator is described as a driven oscillator.
If we examine only funds that have survived to the present, we will overestimate past returns because many of the worst-performing funds have not survived, and the observed association between fund youth and fund performance suggests that this bias may be substantial.
If there is no charge for which a two-thirds majority of the senators present vote " guilty ", the defendant is acquitted and no punishment is imposed.
If a philosophy of Becoming is not possible without change, then ( the potential of ) what is to become must already exist in the present object.
If present, they refuse to record the signal, just as with the earlier ACP technology.
If a child is not screened during the routine newborn screening test ( typically performed 2-7 days after birth, using samples drawn by neonatal heel prick ), the disease may present clinically with seizures, albinism ( excessively fair hair and skin ), and a " musty odor " to the baby's sweat and urine ( due to phenylacetate, one of the ketones produced ).
:# If a general medical condition or another mental disorder is present, the fear in Criterion A ( Exposure to the social or performance situation almost invariably provokes an immediate anxiety response ) is unrelated to it, e. g., the fear is not of Stuttering, trembling in Parkinson's disease, or exhibiting abnormal eating behavior in Anorexia Nervosa or Bulimia Nervosa.
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