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Microbiology
Microbiology is the study of prokaryotic cells and organisms. The focus is mainly on bacteria and diseases.
22,692 Questions
What is the small glass square that goes on the wet mount slide?
The small glass square is called a coverslip. It is used to place over the specimen and mounting medium on a wet mount slide to prevent evaporation, protect the specimen, and provide a flat viewing surface for microscopy.
What nitrogenous base is unique to rna molecules?
RNA bases are: adenine and uracil & guanine and cytosine.
DNA bases are: adenine and thymine & guanine and cytosine.
The main difference is the uracil and thymine. Hope this helps...
Does the suppository cause staining?
Suppositories can potentially cause staining due to the medication's ingredients. It's advisable to use a sanitary pad or underwear liner to prevent staining on clothing. If you have concerns about staining, consult with a healthcare provider for guidance.
Is Agar a homopolysaccaride or heteropolysaccaride?
Agar is a heteropolysaccharide composed of agarose and agaropectin. Agarose makes up the majority of agar and consists of repeating units of agarobiose, while agaropectin is a minor component with a more complex structure.
Where are most blood cells produced in a human body?
Most blood cells, including red blood cells, white blood cells, and platelets, are produced in the bone marrow of a human body. The bone marrow is found in the cavities of bones such as the pelvis, sternum, and long bones.
What functional class of membrane proteins do the immune system detect?
The immune system detects antigens which can be proteins, lipids, or carbohydrates displayed on the surface of cells. In terms of membrane proteins, the immune system detects antigens presented by major histocompatibility complex (MHC) proteins on the surface of cells to distinguish between self and non-self molecules.
Why bacteria go to bottom of the broth culture?
Bacteria can sink to the bottom of a broth culture due to their weight and increased cell density as they multiply. Factors like gravity, viscosity of the broth, and bacterial cell characteristics can contribute to the settling process. This phenomenon can be observed in stationary phase cultures or when nutrient depletion causes the bacteria to clump together and settle.
Integral membrane proteins are components of cell membranes that are embedded within the membrane and span across it, exposing portions of the protein on both the inside and the outside of the cell. These proteins play crucial roles in various cellular functions, such as cell signaling and transport.
Did you stain the bacterial cell wall or the cell cytoplasm?
Yes, it is. Using the Gram staining method, the wall can be seen.
What is the differentce between a smooth endoplasmic reticulum and a rough endoplasmic reticulum?
The answer is Smooth ER and Rough ER The smooth ER no ribosomes. Processes lipids, stores energy The rough ER has ribosomes on it, makes proteins
Two types of Endoplasmic Reticuli exists, the rough endoplasmic reticulum and the smooth endoplasmic reticulum. The rough endoplasmic reticulum is involved in the synthesis of proteins -{from through}- VIA the ribosomes embedded within its structure. The smooth endoplasmic reticulum is involved in the synthesis of lipids and steroids.
How do you take fatrol capsule?
Fatrol capsules should be taken orally with water, usually after a meal as directed by a healthcare professional or as per the instructions on the packaging. It's important to follow the recommended dosage and not exceed it to prevent any adverse effects. If you have any doubts, consult a healthcare provider before taking Fatrol capsules.
How much is one capsule of fatrol?
The price of one capsule of Fatrol may vary depending on the retailer, location, and any ongoing promotions. It is recommended to check with the specific store or online platform where you plan to purchase Fatrol for the current pricing information.
Testing the lymphoproliferative response of mononuclear cells involves measuring the ability of these immune cells to proliferate in response to nonspecific stimulators like mitogens or antigens. This test is used to evaluate the overall functionality of the immune system and can help assess immune cell function in various conditions, including immunodeficiency disorders and autoimmune diseases. The results can provide insights into the immune system's ability to mount an effective immune response.
What group of microbes are smallest in size?
The smallest group of microbes are viruses, which are not considered living organisms because they cannot replicate on their own and rely on host cells to multiply. They are much smaller than bacteria, archaea, and fungi.
When viewing object under power you are able to see a larger field of view but not as much retail?
When viewing an object under higher magnification, you can see a larger field of view and take in more surrounding details. However, the resolution or sharpness of the image may decrease slightly compared to viewing at lower magnification, which can affect the ability to see fine details or textures up close.
Why centrioles are present in animals but not in plants?
Centrioles are responsible for the formation of the spindle which is made of microtubules. These structures constrict around the outside of the cell causing the cell to cleave in two. Plant cells have a rigid cell wall that could not be cleaved by these organelles. The cell wall grows in between the two new daughter cells, separating them from each other. This is why plant cells do not need centrioles, as they would not help the cell to divide anyway.
Organic weed management promotes weed suppression, rather than weed elimination, by enhancing crop competition and phytotoxic effects on weeds.[28] Organic farmers integrate cultural, biological, mechanical, physical and chemical tactics to manage weeds without synthetic herbicides.
Organic standards require rotation of annual crops,[29] meaning that a single crop cannot be grown in the same location without a different, intervening crop. Organic crop rotations frequently include weed-suppressive cover crops and crops with dissimilar life cycles to discourage weeds associated with a particular crop.[28] Research is ongoing to develop organic methods to promote the growth of natural microorganisms that suppress the growth or germination of common weeds.[30]
Other cultural practices used to enhance crop competitiveness and reduce weed pressure include selection of competitive crop varieties, high-density planting, tight row spacing, and late planting into warm soil to encourage rapid crop germination.[28]
Mechanical and physical weed control practices used on organic farms can be broadly grouped as:[31]
- Tillage - Turning the soil between crops to incorporate crop residues and soil amendments; remove existing weed growth and prepare a seedbed for planting; turning soil soil after seeding to kill weeds;
- Mowing and cutting - Removing top growth of weeds;
- Flame weeding and thermal weeding - Using heat to kill weeds; and
- Mulching - Blocking weed emergence with organic materials, plastic films, or landscape fabric.[32]
Some critics, citing work published in 1997 by David Pimentel of Cornell University,[33] which described an epidemic of topsoil erosion worldwide, have raised concerned that tillage contribute to the erosion epidemic.[34] The FAO and other organizations have advocated a "no-till" approach to both conventional and organic farming, and point out in particular that crop rotation techniques used in organic farming are excellent no-till approaches.[34][35] A study published in 2005 by Pimentel and colleagues[36] confirmed that "Crop rotations and cover cropping (green manure) typical of organic agriculture reduce soil erosion, pest problems, and pesticide use." Some naturally sourced chemicals are allowed for herbicidal use. These include certain formulations of acetic acid (concentrated vinegar), corn gluten meal, and essential oils. A few selective bioherbicides based on fungal pathogens have also been developed. At this time, however, organic herbicides and bioherbicides play a minor role in the organic weed control toolbox.[31]
Weeds can be controlled by grazing. For example, geese have been used successfully to weed a range of organic crops including cotton, strawberries, tobacco, and corn,[37] reviving the practice of keeping cotton patch geese, common in the southern U.S. before the 1950s. Similarly, some rice farmers introduce ducks and fish to wet paddy fields to eat both weeds and insects.[38]
What is the constant variable in investigation of fungi growth mold?
The constant variable in investigating fungi growth mold could be the temperature, humidity level, or type of substrate being used for growth. This variable remains unchanged throughout the experiment to ensure that any observed differences in growth can be attributed to the independent variable being tested.
What pathogen can grow from improperly heated foods?
Clostridium botulinum is a pathogen that can grow in improperly heated foods. This bacterium produces a toxin that can cause botulism, a potentially serious illness that can result in muscle paralysis and even death. It is essential to properly heat and handle foods to prevent the growth of this pathogen.
What would happen if the glial Cells stopped working?
Without glial cells, the nervous system would not function properly. Glial cells support and nourish neurons, help maintain the blood-brain barrier, and play a crucial role in neurotransmitter recycling. Overall, the absence of functioning glial cells would result in impaired communication between neurons, leading to disrupted brain function and potentially serious neurological disorders.
What helps the flu or mumps virus enter and leave the host cell?
Viruses like the flu and mumps enter host cells by binding to specific cell surface receptors. They then gain entry into the cell by either fusing with the cell membrane or being taken up by the cell through endocytosis. To exit the host cell, viruses often hijack the cell's machinery to assemble new viral particles which are then released from the cell either by cell lysis or budding.
Are regions of cell membranes tightly bound together?
Yes, regions of cell membranes can be tightly bound together through structures like tight junctions. Tight junctions are specialized protein complexes that seal adjacent cells together, preventing the passage of molecules between them. This tight binding is crucial for maintaining tissue integrity and regulating the movement of substances across the cell membrane.
What are microbes not responsible for?
Microbes are not responsible for geological phenomena like earthquakes or volcanic eruptions. They also do not play a role in decision-making processes or ethical considerations.
Obviously single celled organisms are made of ONE CELL. Examples are bacteria, protozoans like the amoeba, and the algae that are part of plankton communities. Everything else is made of many cells(MULTICELLULAR) and can be observed to develop organs such as eyes and lungs in animals. Plants are multicellular and have developed roots, leaves, flowers, fruits and seeds. Each organ in multicellular organisms is made of many cells.
