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“Biology Interview Questions and Answers will guide all of us now that Biology is the science that studies living organisms. Prior to the nineteenth century. Biology came under the general study of all natural objects called natural history. Learn the basic and advance Biology concepts here with this Biology Interview Questions and Answers. And get preparation for Biology Job with our Biology Interview Questions and Answers.”



198 Biology Questions And Answers

61⟩ Is dwarf pampas grass invasive?

No. the root system is shallow and extends only as far as the plant is big. However if the irrigation system is installed poorly and the pipes are too shallow any plant will seek out the moisture and cause problems.

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62⟩ Where is the gall bladder located?

The gall bladder is located in the Upper Right Quadrant (URQ) of the abdomen just below the liver. It stores bile secreted by the liver. The duct, which carries bile away from the bladder, is called the common bile duct, which joins the pancreatic duct, which opens in the duodenum. The bile emulsifies fats we take in our diet, thus the bile plays an important role in our lipid metabolism.

The gall bladder in humans is located on the underside of the liver just below the lower ribs.

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64⟩ What are hormones?

Hormones are chemicals secreted by the body to produce changes in physical appearance, reproductive behavior, and emotions.

Hormones are organic chemical messengers they are protein in nature & may have several specific effects on organs & thus control a wide variety of activities. Hormones do not operate in isolation but form an integrated system.

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66⟩ Why are calcium carbonate and carbon dioxide and carbon monoxide considered inorganic compounds?

"The name "organic" is a historical name, dating back to 19th century, when it was believed that organic compounds could only be synthesized in living organisms through vis vitalis - the "life-force". The theory that organic compounds were fundamentally different from those that were "inorganic", that is, not synthesized through a life-force, was disproved with the synthesis of urea, an "organic" compound by definition of its known occurrence only in the urine of living organisms, from potassium cyanate and ammonium sulfate by Friedrich Wöhler in the Wöhler synthesis. The kinds of carbon compounds that are still traditionally considered inorganic are those that were considered inorganic before Wöhler's time; that is, those which came from "inorganic" (i.e., lifeless) sources such as minerals."

Some carbon inorganic compounds are carbon dioxide, carbon monoxide, diamond, graphite, fullerenes, cyanide, cyanate, thiocyanate, carbonate, and carbide.

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67⟩ What is a pipette and how is it used?

There are many types of pipettes (or pipette), but most are essentially a fancier version of a medicine dropper or eye dropper. They are used in a laboratory to transport and/or measure a specific volume of liquid.

Volumetric pipettes allow the user to measure a volume of solution extremely accurately and then add it so something else. They are commonly used to make laboratory solutions from a base stock as well as prepare solutions for titration. They typically only allow you measure one single volume in a particular size pipette (just like with volumetric flasks). Therefore, they come in many different sizes.

There are other types of pipettes also, such as a Pasteur pipette, which is not used to measure the volume of the liquid. It is essentially a large dropper, which can be used to remove liquid from one container and add it to another.

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68⟩ Is the bacterium MRSA pathogenic or non-pathogenic?

MRSA bacteria are pathogenic. This group of bacteria belongs to Staphylococcus aureus family, which have grown resistant to methicillin-type antibiotics. MRSA stands for

M - methicillin R - resistant S - Staphylococcus A – aureus

Staphyloccocus aureus bacteria are often carried on people's skin and sometimes in their noses and back of their throats. People carrying the bacteria who are healthy are said to be colonized, but not infected. The bacteria, however, can cause serious infections, such as pneumonia, blood, bone and surgical wound infections, as well as less serious infections such as impetigo, cellulitis and small abscesses or boils under the right conditions.

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69⟩ What is the classification that divides orders?

Orders are divided into Families.

The hierarchy of classification of living things most generally used is, from broadest to narrowest:

1) Domain

2) Kingdom

3) Phylum

4) Class

5) Order

6) Family

7) Genus

8) Species

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70⟩ How can people support creationism when there is no factual basis for the claims made?

Be careful answering this one. Read the question through and turn it over in the mind. Perhaps the thinking person would say that people support creationism because of their faith. Their religion teaches the divine origin of man, and they believe it. That seems to be the crux of the argument by the creationists for creationism.

Some creationists decry the work of scientists who have built and continue to build more and more links in the chain of evolutionary development. There is so much evidence for the theory of evolution. What is there for the creationist to hold up in the light of reason? It can get dicey.

Certainly, there is a huge supply of scientific evidence for evolution. Science supports evolution by far more strongly than it does creation. There is no scientific evidence for creation. Certainly, science cannot prove that God did not create man. However, no one can prove by any testable means that He did. Arguments against evolution do not hold water scientifically. The earth is a very, very old ball of rock, and time can do things to the earth and life on it that are almost beyond the comprehension of men. Creation science is an oxymoron, and is almost a joke to the vast majority of the scientific community.

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71⟩ What is a vesicle?

A vesicle is a relatively small intracellular, membrane-enclosed sac that stores or transports substances

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72⟩ Why the orange trees are often sprayed with water?

Although it is grossly counter-intuitive, whenever citrus groves are in danger of experiencing below-freezing temperatures, the trees are sprayed with water. This causes frost to form on the rinds of the fruit and provides an extra layer of insulation against the low temperatures that would otherwise freeze the edible portion of the fruit and destroy the crop.

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73⟩ What does an osteoblast cell do?

Living cells within the bone are engaged in an unceasing process of remodeling. Osteoblasts lining the surface of bone are much like fibroblasts, deposit, and organize new bone matrix while osteocytes demolish old bone matrix.

Osteoblasts are converted into osteocytes as they become embedded in this matrix and the matrix calcifies.

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74⟩ What is a burette and how is it used?

A burette is a uniform-bore glass tube with fine gradations and a stopcock at the bottom, used especially in laboratory procedures for accurate fluid dispensing and measurement.

The burette is commonly used in titrations to measure precisely how much liquid is used. A burette is simultaneously occupied by the presences of a liquid measuring and transferring this derailment.

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75⟩ How is a genetic trait determined by the genetic code within a DNA molecule?

A DNA molecule has 4 different bases, either CGTA. Any specific combination of these things forms a different protein (a triplet of 3 base pairs codes for an amino acid and a chain of amino acids is a protein) which is expressed. This protein allows a genetic trait to be expressed. An example could be a protein that adds color to your hair.

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76⟩ What is monera?

One of the 5 main kingdoms includes bacteria and blue/green algae. Does NOT have a cell membrane, or in other words, is made of prokaryotic cells.

Actually, Monera encompasses eubacteria and archbacteria. In addition, prokaryotes DO have a cell membrane. What they do not have is a membrane bound nucleus.

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77⟩ What is the proper name for EDTA and what is it?

EDTA is ethylenediamine tetraacetic acid. It is a strong chelating agent. It has many uses including:

1) Industrial cleaning: complexation of Ca2+ and Mg2+ ions, binding of heavy metals

2) Detergents: complexation of Ca2+ and Mg2+ (reduction of water hardness)

3) Photography: use of Fe (III) EDTA as oxidizing agent

4) Pulp and paper industry: complexation of heavy metals during chlorine-free bleaching, stabilization of hydrogen peroxide

5) Textile industry: complexation of heavy metals, bleach stabilizer

6) Agrochemicals: Fe, Zn and Cu fertilizer, especially in calcareous soils

7) Hydroponics: iron-EDTA is used to solubilize iron in nutrient solutions.

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78⟩ How does fruit produce seeds?

For the formation of fruits, the flower should be fertilized. Where the pollen grain is a male gamete and ovule is a female gamete. When the pollen grain comes is contact with the ovule fertilization occurs and a zygote is formed. This zygote is nothing but seed whereas the other parts of the flower like sepals and petals also contribute in the formation of fruit.

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80⟩ What is a Florence flask? How it is used?

A Florence flask (also known as a boiling flask) is a type of flask. It is a piece of laboratory glassware. It can hold chemical solutions. The flask has a round body with a long neck. The flask usually comes in volumes of 1 liter. It is similar in shape and function to a round bottom flask.

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