Microbiology

Microbiology is the study of prokaryotic cells and organisms. The focus is mainly on bacteria and diseases.

64,384 Questions
Microbiology
Mycology or Fungi
Ethanol and Lactic Acid Fermentation

What is the negative control in a fermentation lab?

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Microbiology
Genetics
Blood Types

What is the rarest blood type?

It really does depend on the population in the U.S. but it has been stated that the rarest blood type is AB-. This is according to the American Red Cross

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Microbiology
Human Anatomy and Physiology

What are the levels of organization in a human body starting with the smallest unit?

The levels in the body begin with the cell, all cells that are the same and work together are called tissues, tissues that work together are called organs, organs working together are called organ systems, and these systems working together are called an organism. An easy way to remember this is: Cells>tissues>organs>organ systems>organism.

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Microbiology
Cell Biology (cytology)

Do animals cells have a cytoplasm?

All cells have a cytoplasm.It's in what all the organelles of a cell are present.A jelly-like viscous substance.Cytoplasm needs to be isotonic to it's surroundings for to function properly.

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Microbiology
Cell Biology (cytology)

What is the function of the cytoplasm?

The cytoplasm is a semi fluid material surrounding organelles; site of many cellular reactions. The Cytoplasm offers support to the cell and speeds up inter-cellular travel. It allows the cell to take up 3-dimensional space and the cell's many organelles to "float" freely throughout. It also acts as a medium for transport inside the cell.

Cytoplasm is the homogeneous, generally clear jelly-like material that fills cells. The cytoplasm consists of cytosol and the cellular organelles, except the nucleus. The cytosol is made up of water, salts and organic molecules and many enzymes that catalyze reactions. The cytoplasm plays an important role in a cell, serving as a "molecular soup" in which the organelles are suspended and held together by a fatty membrane. It is found within the plasma membrane of a cell and surrounds the nuclear envelope and the cytoplasmic organelles.

The cytoplasm is a polar, aqueous substance, and thus it interacts with the polar internal layer of the cell membrane which gives the cell form. It functions as a solvent for all the proteins and compounds within the cell, and facilitates the transportation of substances from one part of a cell to another part of the cell. It is also a storage place for chemical substances indispensable to life. Vital metabolic reactions take place here, for example anaerobic glycolysis and protein synthesis.

The cytoplasm is where all the work in the cell is done. Nutrients are absorbed, transported, and processed within the cytoplasm. (can be found in both the plant and animal cell.) The cytoplasm also provides a physical structure for the cell.

The cytoplasm plays a mechanical role, i.e. (example) to maintain the shape, the consistency of the cell and to provide suspension to the organelles. It is also a storage place for chemical substances indispensable to life. Vital metabolicreactions take place here, for example anaerobicglycolysis and protein synthesis.

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Microbiology
Biochemistry
Cell Biology (cytology)

What is the importance of the cytoplasm?

It is within the cytoplasm that most cellular activities occur, such as many metabolic pathways including Glycolysis, and processes such as cell division. cytoplasm is a part of the cell that holds the other organelles of the cell together.

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Microbiology
Cell Biology (cytology)

Is the central vacuole an organelle?

Yes. The central vacuole like any other structure in the cytoplasm is an organelle.

Other examples include the nucleus and mitochondria.

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Microbiology
Protozoa

Is Protozoa prokaryotic?

No. Protozoa are Eukaryotic and unicellular organisms because they possess nucleus while prokaryotes are organisms which lack a nucleus in cell ..

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Infectious Diseases
Microbiology
Bacteria

What would be the appearance of the gram positive bacterium if you forget to counterstain with safranin?

If you forget to counter stain color of Gram positive would be violet or blue .

The above answer is good. Here is why the above answer is good.

Yes it would still be Violet or blue. Gram positive bacteria are gram positive, because it holds onto the crystal violet stain that washes out of gram negative bacteria. Counterstaining with safranian turns gram negative bacteria pink to red only because the crystal violet has washed out of the gram negative. The lighter safranian has little to no effect on gram positive bacteria.

The cause of the difference has to do with the makeup of the cell wall in the different bacteria.

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Microbiology
Embryology

Name the 2 important branches of biology?

The two important branches of biology are botany and zoology.

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Microbiology

What type of pathogen causes syphilis?

A bacteria, which is why it can be treated with antibiotics.
Treponema pallidium bacteria causes syphilis.
Syphilis is a bacterial infection.
No, it's caused by a bacterium.
Syphilis is caused by the spirochetal bacterium Treponema pallidum, and is generally transmitted sexually.
Syphilis is a sexually transmitted disease caused by the spirochetal bacterium Treponema pallidum subspecies pallidum. The route of transmission of syphilis is almost always through sexual contact, although there are examples of congenital syphilis via transmission from mother to child in utero.
Syphilis is not a virus, it is a disease caused by a bacteria called Treponema pallidum.
bacteria
The pathogen that causes syphilis is the bacteria Treponema pallidum.

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Biology
Microbiology
Genetics

What sugar is found in DNA and RNA?

Ribose is found in RNA

Deoxyribose is found in DNA

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Zoology or Animal Biology
Microbiology
Immune System

What is meant by the term pathogen?

A pathogen is an organism which when act or enter in your body can cause certain kind of disease and make you ill. They are generally microorganisms like bacteria, fungi, viruses, protozoan etc.

Basically, a pathogen is a disease causing agent also called virulent ..

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Microbiology
Cell Biology (cytology)
Cell or Plasma Membranes

Why is the cell membrane not permeable?

Baculoviruses are arthropod-specific viruses containing large double-stranded circular DNA genomes of 80,000–180,000 bp. In recent years, they have been utilized for producing complex eukaryotic proteins in insect cell cultures.
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Microbiology
Genetics

Where are bacterial chromosomes located?

In the nucleoid region.

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Botany or Plant Biology
Microbiology
Mycology or Fungi

How do rhizopus reproduce?

With the help of conidiospores.

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Conditions and Diseases
Cold and Flu
Microbiology
Viruses (biological)

What is the causative organism of seasonal influenza?

The human seasonal flu, as well as other types of human influenza, are caused by three types of viruses: influenza Types A, B, and C. Swine flu is caused by an influenza type A influenzavirus, for example. Type A flu viruses have been the causes of all influenza pandemics to date.

Within each type there are mutations and countless numbers of strains and subtypes. The influenza viruses are RNA viruses that come from the family Orthomyxoviridae.

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Biology
Microbiology
Biochemistry

Do cellular respiration and fermentation have any similar reactions?

Both start with glycolysis... but once you reach pyruvic acid, they're very different. Respiration final product is an inorganic compound (oxygen) whereas fermentation final product is an organic compound (such as lactic acid or ethanol)

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Microbiology

What is the gram stain for Lactococcus lactis broth culture?

Positive

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Animal Life
Microbiology
Microscopes

Are animals microscopic or macroscopic?

Animals like plankton or amoeba are called microscopic. But animals that you can see with the naked eye are macroscopic.

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Botany or Plant Biology
Microbiology
Genetics
Cell Biology (cytology)

Who discovered cell wall and when?

Cell wall was discovered by Robert Hooke.

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Microbiology
Genetics
Viruses (biological)

What is the envelope of a virus made of?

The envelope of a virus is made of a lipid bilayer with proteins embedded in the bilayer.

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Biology
Microbiology

Where do you find Sporozoa?

All sporozoans are parasitic and pathogenic,e.g. Plasmodium is found in human , animals and mosquitoes . Other sporozoans infect cats , poultary , honee bees and cattle and produce different diseases .

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Biology
Microbiology

How are Protists commonly classified?

They are eukaryotes that can't be classified as plants, animals, or fungi, and its upsetting because the kingdom Protistadisplays the greatist variety. One thing that separates them from the other kingdoms is that some protists are unicellularr, and others are multicellular. The other kingdoms are all multicellular organisms.

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Chemistry
Microbiology

What types of protein speed up chemical reactions?

Enzymes are proteins that speed up chemical reactions. They are called biological catalysts as well. Examples include Protease(speeds up digestion of proteins), Lipase(digestion of fats), Cellulase(digestion of cellulose),etc.

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