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What part of the bacterial cell helps it stick to surfaces?

Bacteria cells differ to those of plants and animals as the cells lack a nucleus and other membrane-bound organelles. The cells do have ribosomes, small organelles, found in the cytoplasm. A bacteria cell has a basal body that allows it to rotate, and most have a layer on the outside of the cell wall. The cells contain DNA located in the jellylike cytoplasm. It is there the genetic material and the ribosomes are located.

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How is the mass of Jupiter calculated?

The formula reads "M=(a^3/P^2)*(4pi^2/G)," where M is the mass, "a" denotes the distance of an orbit, P is the period of an orbit, pi is 3.1459 and G is Kepler's constant. The period of an orbit is the time it takes a moon or planet to return to the same spot in the orbit every revolution. Pi is the mathematical constant that describes the relationship between the diameter of a circle and its circumference.\nThe mass of Jupiter is estimated to be 1.9 x 10^27 kilograms, or approximately 318 times the mass of Earth. The mass of Jupiter is 2.5 times greater than all of the other planets the ..

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What are the names of unicellular organisms?

The Archaea were discovered in the early 1970s. They are single-celled prokaryotes, as are bacteria. DNA testing shows the two groups are unique, but share a common ancestor. Scientists believe the Archaea are more closely related to Eukaryota, to which humans belong, than they are to bacteria. Archaea exist in the most severe environments on earth. They thrive near volcanoes, in hot springs, in salty seas, in sewage and in the extreme cold of the ocean floor.\nAnother interesting group of unicellular organisms is Euglena. They produce chlorophyll from sunlight like other algae. However, if th..

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How well would a plant grow under pure yellow light?

Plants obtain their energy through the process of photosynthesis, during which light is absorbed and converted into energy. Green and yellow light is not absorbed by chlorophyll in plants and instead passes through them or is reflected, giving plants their color. The majority of light absorbed by plants is red and blue. All food and fossil fuels are absorbed through photosynthesis.

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What are the three main functions of blood?

Blood carries oxygen, carbon dioxide, nutrients, waste, heat and hormones throughout the body to each of its cells. Without blood, cells would fail to perform as needed to sustain life. Red blood cells are responsible for blood clotting, ensuring that most cuts do not cause major blood loss. White blood cells fight off infection and are a major component of the body's immune system.

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Where can you find the latest Hubble telescope images?

For the general public, NASA's main site offers a selection of the latest and most beautiful fully processed Hubble images, also releasing similar images to the press alongside a new discovery.\nNASA also frequently uploads unprocessed images from Hubble. These are published to the Mikulski Archive for Space Telescopes and are available online. Although MAST is an archive, it contains the most recent imagery from the telescope. However, because these images have not been processed, they are blurry, distorted, and mostly in black and white. MAST imagery is intended for researchers, althoug..

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What are the structural differences between starch and glycogen?

Glycogen is produced by animals and starch by plants; both store energy and feature a spiraling structure. In addition to having generally fewer branch points, the number of branch points in a starch molecule can vary wildly. A single plant typically produces some starch molecules with branch points and some that will contain none at all.

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What are some advantages of chemistry?

Chemistry uses several complimentary disciplines as well, such as technology and mathematics, to carry out its functions. The combination of chemistry with technology, for instance, enhances quality of life by expanding knowledge of and access to various physical and biological resources. Chemistry is often referred to as a central science, as it combines practices and theories in the fields of physics, mathematics, biology and medicine. Some chemistry focuses on certain aspects, such as improving the quality of the environment or creating medicines designed to fight specific conditions, such ..

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How is freezing rain formed?

Freezing rain leaves an icy glaze on everything it touches. This glaze grows thicker with each super-cooled drop that strikes the surface. The weight of the ice causes a large number of problems. Ice over 0.2 inch thick breaks tree limbs already under stress due the tree's dormant state in cold weather. If the heavy limbs fall on power lines, they cause power outages. The ice also places stress on power lines, poles and insulators. Ice forms on roadways eliminating traction for vehicles and making travel difficult and dangerous. Unlike snow or sleet, freezing rain forms a continuous sheet..

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How do chemical and mechanical digestion work together?

Chewing not only breaks up food items, but also mixes them with saliva which contains both enzymes and mucus. The enzymes are primarily for breaking down carbohydrates. The mucus helps stick the chewed food particles together into a semi-solid mass known as a bolus, which is easier to swallow than the original food item would often have been. It travels down to the stomach, where further mechanical and chemical digestion occur.\nThe stomach mechanically digests the bolus through a process known as peristalsis, a contraction of the stomach walls that churns the bolus and mixes it with stomach a..

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