| 单词 | one-celled |
| 例句 | By three billion years ago, a number of one-celled plants had joined together, perhaps because a mutation prevented a single cell from separating after splitting in two. Cosmos 1980-01-01T00:00:00Z The first living things were not anything so complex as a one-celled organism, already a highly sophisticated form of life. Cosmos 1980-01-01T00:00:00Z If we let fly enough of them at once, we can even burn out the one-celled green creatures in the sea, and thus turn off the oxygen. The Lives of a Cell 1974-01-01T00:00:00Z The simplest one-celled organism is a far more complex machine than the finest pocket watch. Cosmos 1980-01-01T00:00:00Z And a free- swimming one-celled amoeba is much more sophisticated; with about four hundred million bits in its DNA, it would require some eighty 500-page volumes to make another amoeba. Cosmos 1980-01-01T00:00:00Z The 1880s saw two scientists, France’s Louis Pasteur and Germany’s Robert Koch, isolate various bacteria—extremely small one-celled creatures—living in animals and humans and link them to specific diseases. An American Plague: The True and Terrifying Story of the Yellow Fever Epidemic of 1793 2003-06-23T00:00:00Z Even some one-celled organisms know to swim to the light. Cosmos 1980-01-01T00:00:00Z I mean, who really cares about dividing decimals or contrasting the parts of plants, animals, and one-celled organisms when you’ve had the kind of morning I have? The Misfits 2001-10-01T00:00:00Z Either way, it’s a cozy relationship: We feed these talented one-celled organisms a diet of sugar and keep the temperature just so, and they reward us by, among other things, turning barley broth into beer. Brewers do the wild thing and let yeasts have their way with beer 2015-01-31T05:00:00Z In an illustration etched on her disc’s surface, she replaces Voyager’s human-centric view with one in which bacteria is central, and in which animals are intertwined with one-celled organisms, fungi and plants. Candice Lin explores the unruliness of the natural order at Francois Ghebaly Gallery 2015-10-16T04:00:00Z Because human genes are so complex, Boeke's lab first developed its "genome writing" approach in yeast, one-celled fungi that share many features with human cells but that are simpler and easier to study. First mice engineered to survive COVID-19 like young, healthy humans 2023-11-01T04:00:00Z Earth was much different when life first took hold about 4 billion years ago, with vast shallow seas whose only living creatures were one-celled. ‘Totally new’ idea suggests longer days on early Earth set stage for complex life 2021-08-02T04:00:00Z Lovley eventually realized that these one-celled organisms produce long chains of proteins that carry the electrons to nearby rust molecules, which use the charged particles to transform into magnetite. Electricity-Carrying Bacteria Lead to New Applications—and New Questions 2020-12-09T05:00:00Z Wiens said the ancient animal might have eaten protists, a catch-all term for tiny one-celled organisms that are not plants, animals, or fungi. The world’s first animal was probably a carnivore 2019-08-30T04:00:00Z In the first phases of life on Earth, competition between hungry one-celled organisms almost depleted available food sources and ended life’s history on this planet before it even began. Politicians love to talk about “survival of the fittest.” They don’t know what that means 2018-07-22T04:00:00Z In the first phases of life on Earth, competition between hungry one-celled organisms almost depleted available food sources and ended life's history on this planet before it even began. How politicians have corrupted the concept of “survival of the fittest” 2018-07-14T04:00:00Z If, as she and others believe, choanoflagellates offer a glimpse of the one-celled ancestor of animals, that organism was already well-equipped for multicellular life. The momentous transition to multicellular life may not have been so hard after all 2018-06-28T04:00:00Z For those who were exposed, it doesn’t matter which one-celled organism was to blame. 1997 outbreak of toxic bacteria boosted Chesapeake cleanup 2017-07-29T04:00:00Z These one-celled ocean creatures are among the most numerous and varied life-forms in the sea. First Clear View of a One-Celled Harpooner in Action 2017-03-31T04:00:00Z Waterways carry the nutrients to lakes or coastal areas, where they feed blooms of one-celled plants and animals. $1M dead zone contest: 5 finalists from AUS, Calif, Ill, NY 2016-12-24T05:00:00Z Certain groups of clams and corals were decimated, as were the most important primary producers of the time, tiny planktonic foraminifera—one-celled organisms that create minute and wondrously elaborate shells of calcite. Did Oil Kill the Dinosaurs? 2016-07-14T04:00:00Z Right now, the computer organism getting the most attention is the computer equivalent of the one-celled organism: the sensor. SAPVoice: 6 Freaky, Funny, and Scary Abilities of Computer Organisms 2015-03-30T04:00:00Z The microbes are mostly bacteria, with healthy helpings of fungi and other one-celled life forms. Beneath Central Park, a Teeming Universe 2014-10-02T04:00:00Z Schekman’s work began in the 1970s with yeast, a one-celled microorganism often used as a model for more complex life forms. Three Americans win Nobel Prize in medicine for work on traffic control system of cells 2013-10-07T17:59:55Z Banks are one-celled capitalist organisms: if there is demand for a product, banks will do everything possible to produce more of that product. The housing 'recovery' is built on false confidence 2013-06-20T19:12:36Z The result was a rich trove of ancient DNA from as many as 2700 species, including green algae, fungi, and dinoflagellates, a type of one-celled aquatic creature. Ancient DNA Found Hidden Below Sea Floor 2013-05-08T00:15:00Z But in the case of a one-celled organism dwelling in the oceans named Amphisteginid foraminifera, a change in its habitat may lessen the devastation to some coastlines at risk from erosion and powerful storms. Migrating Ocean Microbe May Help Protect Coastlines 2013-02-08T16:15:03.503Z The central stamen in each group has a two-celled anther, while its neighbor on either hand has but a one-celled anther. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z There are five stamens in the male flowers; the anthers open towards the outside, are one-celled, with the pollen-sacs generally curved and variously united. Encyclopaedia Britannica, 11th Edition, Volume 7, Slice 8 "Cube" to "Daguerre, Louis" 2012-01-31T03:00:17.257Z The petals vary from 3 to 5, the stamens are 3 to 10 and the ovary is wooly and one-celled. Forest Trees of Illinois How to Know Them 2011-10-08T02:00:23.997Z The ovary is one-celled, with two stigmas, either separate and rolled back or contiguous and funnel-shaped. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" 2011-09-02T02:00:20.450Z In Cathartocarpus Fistula a one-celled ovary is changed into a fruit having each of its seeds in a separate cell, in consequence of spurious dissepiments being produced horizontal from the inner wall of the ovary. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z Sepals, petals, and stamens numerous in many series, their cohering bases coating the one-celled ovary and forming a cup above it. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z So he created a simple system in the lab using protists, one-celled organisms that naturally thrive in pond scum and feed on bacteria. Microbe 'Cage Matches' Pass Darwin's Test 2011-06-17T19:10:41Z But he supposed that which the book called Protozoa, the one-celled animalcules, were the same as germs. The Rotifers 2011-04-18T02:00:10.237Z To enlarge your idea of what a cell can do, spend as much more time on the one-celled animals as your course will permit. A Guide for the Study of Animals 2011-01-18T03:00:14.913Z In Astragalus the folding inwards of the dorsal suture converts a one-celled ovary into a two-celled fruit; and in Oxytropis the folding of the ventral suture gives rise to a similar change. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z The numerous slender pistils are so cleverly joined together into a cylinder, that they appear like a hollow, one-celled ovary. The Wild Flowers of California: Their Names, Haunts, and Habits 2012-02-17T03:00:37.163Z Malaria is caused by a parasite, and making a vaccine against parasites is much harder to do than vaccinating against one-celled organisms like bacteria, or the even simpler viruses. Malaria vaccine trial disappoints 2010-09-29T21:31:00Z Some one-celled creatures depend on such organisms along with the organelles to harvest energy. Multicelled Animals May Live Oxygen-Free 2010-04-12T14:15:00Z Food-balls, bits of food inside the cells of many one-celled animals, usually showing through the walls. A Guide for the Study of Animals 2011-01-18T03:00:14.913Z In the oak and hazel, an ovary with three and two cells respectively, and two ovules in each, produces a one-celled fruit with one seed. Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 3 "Frost" to "Fyzabad" 2011-08-15T02:00:28.473Z But anthers may become one-celled, and that either by confluence or by suppression. The Elements of Botany For Beginners and For Schools There are so many differences of detail that no line can be drawn between the one-celled funnel of Aeolosoma and the extraordinarily large and folded funnel of the posterior nephridia in the Oligochaete Thamnodrilus. Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7 "Cerargyrite" to "Charing Cross" In them lay the spawn, an irritability: then one-celled organisms, to gradually evolve through the centuries to the many-celled, and more complex of nature. Astounding Stories, May, 1931 Oral groove, a funnel-shaped groove in one side of some one-celled animals conducting food to the mouth. A Guide for the Study of Animals 2011-01-18T03:00:14.913Z Bacteria are one-celled and so small they can only be seen by aid of a microscope. Canned Fruit, Preserves, and Jellies: Household Methods of Preparation U.S. Department of Agriculture Farmers' Bulletin No. 203 So a simple pistil should have a one-celled ovary, only one line of attachment for the ovules, a single style, and a single stigma. The Elements of Botany For Beginners and For Schools Fruit short-stemmed, with divergent pods, 2-4 in number, splitting open on the outer edges; each one-celled, with one row of lapping, pendulous seeds with membranous wings. Trees of the Northern United States Their Study, Description and Determination So our ancestry runs back to the very beginning, when it originated in the one-celled animals which are also the ancestors of all the rest of the animal world. The Meaning of Evolution It took a speck of one-celled plant life on a world parsecs away to prove it for all the galaxy. The Issahar Artifacts Yeasts, which are also one-celled organisms, grow less rapidly. Canned Fruit, Preserves, and Jellies: Household Methods of Preparation U.S. Department of Agriculture Farmers' Bulletin No. 203 Desmids and Diatomes, which are microscopic one-celled plants of the same class, conjugate in the same way, as is shown in a Closterium by Fig. The Elements of Botany For Beginners and For Schools The Ascomycetes often include among their numbers fungi ranging in size from microscopic one-celled plants to quite large and very beautiful specimens. The Mushroom, Edible and Otherwise Its Habitat and its Time of Growth Coming now to the minute, microscopic, one-celled animals, the Protozoa, we find entire groups of them that are living parasitic lives, depending wholly on one or more hosts for their existence. Insects and Diseases A Popular Account of the Way in Which Insects may Spread or Cause some of our Common Diseases When you read this, the one-celled organisms responsible for wine, beer, and alcohol generally, will be dying as a race. Revenge As with its cousin across the universe, the one-celled amoeba, these crystals too were sensitive to light, to heat, to cold—to food. Eight Keys to Eden There is no question that our evolution is upward, that we have arisen from one-celled creatures wallowing in the slime of primal seas. Hellhounds of the Cosmos Ovary inferior, held in the concavity of the receptacle, one-celled, with 1 seed, crowned by an epigynous disc, above which rises a simple style with dilated stigma. The Medicinal Plants of the Philippines Next to the one-celled infusoria no phenomenon throws such direct light on our cellular psychology as the fact that the human ovum, like the ova of all other animals, is a single, simple cell. Freedom in Science and Teaching. from the German of Ernst Haeckel There is no doubt about that; for he had grown from a one-celled little beginning of life into a creature so big that he filled the whole of his world crammed full. Bird Stories We therefore take some such one-celled creature as our first animal ancestor. The World's Greatest Books — Volume 15 — Science Description of yeast: Yeast is a one-celled plant which can be seen only with a microscope. Ontario Teachers' Manuals: Household Management The lower one-celled organisms in nature increase by division, just as do the individual cells of a more highly organized, many-celled order of living beings. Sex Avoided subjects Discussed in Plain English The association of cells and the division of labour among them are the modes by which, in the first instance, the compound many-celled organism has originated, historically, from the simple one-celled organism. Freedom in Science and Teaching. from the German of Ernst Haeckel This is a small one-celled microscopic plant having a blood red color in one stage of its existence. The Mountain that was 'God' Being a Little Book About the Great Peak Which the Indians Named 'Tacoma' but Which is Officially Called 'Rainier' When an ordinary Protozoon or one-celled animal divides into two or more, which is its way of multiplying, the daughter-units thus formed float apart and live independent lives. The Outline of Science, Vol. 1 (of 4) A Plain Story Simply Told Yeast may be introduced as another family of one-celled plants, but one which is most useful. Ontario Teachers' Manuals: Household Management The one-celled animal may be said to breathe with its whole body, while the man employs a large number of muscles, not to speak, at present, of other arrangements. Voice Production in Singing and Speaking Based on Scientific Principles (Fourth Edition, Revised and Enlarged) In the one-celled Infusoria, which are so highly sensitive and have such an energetic will, this conception will be clear without any farther explanation. Freedom in Science and Teaching. from the German of Ernst Haeckel Compare the conditions surrounding a one-celled animal, living in water, to the conditions surrounding the cells in the body. Physiology and Hygiene for Secondary Schools In the family called Hymenomycetes there are mixed with these, and closely packed together, one-celled sterile structures named cystidia. Among the Mushrooms A Guide For Beginners Thus the one-celled egg has transformed into something that it was not at first, and in doing this it has proved the possibility and the reality of organic reconstruction. The Doctrine of Evolution Its Basis and Its Scope We actually do find colonies of unicellular animals much like amœba, so that the muscle-cells and all other cells of the body may be compared to amœba and other one-celled animals. Voice Production in Singing and Speaking Based on Scientific Principles (Fourth Edition, Revised and Enlarged) It is one-celled siliquose, and pulpy within, wrinkled on the outside, and full of a vast number of seeds like grains of sand, having when properly prepared, a peculiar and delicious fragrance. The Commercial Products of the Vegetable Kingdom Considered in Their Various Uses to Man and in Their Relation to the Arts and Manufactures; Forming a Practical Treatise & Handbook of Reference for the Colonist, Manufacturer, Merchant, and Consumer, on the Cultivation, Preparation for Shipment, and Commercial Value, &c. of the Various Substances Obtained From Trees and Plants, Entering into the Husbandry of Tropical and Sub-tropical Regions, &c. The forms most frequently seen by such an examination are one-celled plants. Physiology and Hygiene for Secondary Schools In a one-celled individual, there is no distinction between germinal and bodily functions. Taboo and Genetics A Study of the Biological, Sociological and Psychological Foundation of the Family Here the assemblage is made up of one-celled individuals essentially similar to one another in structure and in physiological activities; in the latter respect each one of them is like Amoeba as well. The Doctrine of Evolution Its Basis and Its Scope Let us begin with the Protozoa, or one-celled forms—the lowest form of animal life. A Series of Lessons in Gnani Yoga All separate masses of protoplasm, such as the one-celled amoeba or the individual cells of our own bodies, are constantly taking in food and as constantly throwing off wastes. Q. E. D., or New Light on the Doctrine of Creation Ovary smooth, or covered with scales and spines, or woolly, one-celled; style simple, filiform or cylindrical, with a stigma of two or more spreading rays, upon which are small papillae. Cactus Culture for Amateurs Being Descriptions of the Various Cactuses Grown in This Country, With Full and Practical Instructions for Their Successful Cultivation In the lower orders of one-celled algæ, reproduction takes place by simple cell division. Taboo and Genetics A Study of the Biological, Sociological and Psychological Foundation of the Family The evolution of the wonderfully varied societies found among insects begins with the solitary insect itself, just as this, viewed as a cell-community, originates from one-celled beginnings like Amoeba through progressive evolution in time. The Doctrine of Evolution Its Basis and Its Scope Instead of seeds the fern produces spores, which are little one-celled bodies without an embryo and may be likened to buds. The Fern Lover's Companion A Guide for the Northeastern States and Canada These one-celled creatures are also alive, are just as truly alive as are those composed of many cells. Q. E. D., or New Light on the Doctrine of Creation All material expressions of the Father, from the simplest chemical element to the most complex compound; from the one-celled protoplasmic life germ to the most complex organism, are Vibratory in their ultimate nature. The Planet Mars and Its Inhabitants, a psychic revelation If plants and animals all developed from a one-celled animal, such as the amoeba, why did not the amoeba develop? The Evolution of Man Scientifically Disproved In 50 Arguments Their structural plans are far more varied, and they range more widely from higher and relatively complicated organisms to the unitary one-celled animals. The Doctrine of Evolution Its Basis and Its Scope But in the case of a close relative of the ameba, the one-celled animal known as the paramecium, union with another paramecium, true conjugation, has been proved necessary to prevent death sooner or later. The Glands Regulating Personality On the collar round the valve there are in the place of glands numerous one-celled papillae, having very short footstalks. Insectivorous Plants For this is in accordance with the universal law of Growth and Decay—a law that exempts neither the one-celled amoeba, nor the complex Solar system whirling yonder in Infinite space. The Planet Mars and Its Inhabitants, a psychic revelation They say that all species developed by growth, but do not explain why we still have the one-celled amoeba, the microscopic bacilli of plant life, and the microscopic species of animal life. The Evolution of Man Scientifically Disproved In 50 Arguments The earliest one-celled protozoa were probably succeeded by many- celled animals of the type of the blastosphere, and these by gastrula-like organisms. The Elements of Geology In the course of time little one-celled living units appeared in the waters of the earth, whether in the shallow shore waters or on the surface of the deep is a matter of conjecture. The Story of Evolution Thus we get an immense variety amongst these Protozoa, as the one-celled animals are called. The Story of Evolution The Thalamophores, the sister-group of one-celled animals which largely compose our chalk and much of our limestone, are developed on the same principle. The Story of Evolution We have the one-celled amoeba, the microscopic animals, and the lowest forms of animal life. The Evolution of Man Scientifically Disproved In 50 Arguments We have still many loose associations of one-celled animals in nature, illustrating the approach to a community life. The Story of Evolution The distinction of being the lowest known living organisms should, I think, be awarded to certain one-celled vegetal organisms which are very common in nature. The Story of Evolution The deposit goes on until at last an elaborate framework of thorny, or limy, or flinty material is constructed by the one-celled citizens. The Story of Evolution It is the type to which a moving close colony of one-celled microbes would soon come. The Story of Evolution First we have loose associations of one-celled plants in a common bed, then closer clusters or many-celled bodies. The Story of Evolution The one-celled animal in its shell is, however, no longer a microscopic grain. The Story of Evolution The evolution of the plant I reserve for a later chapter, and I must be content to suggest the development of one-celled animals on very broad lines. The Story of Evolution |
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