Answer:
The sample treated with RNase
Explanation:
According to this question, a novel virus was found which was capable of killing mice when injected into them and capable of making a nonvirulent virus to be virulent by transforming them.
After heat killing the novel virus, different samples were treated with either an RNase, a DNase, or a Proteinase. If the novel virus uses double-stranded RNA as its genetic material, the sample treated with RNase will no longer be capable of transforming the non-virulent strain. This is because RNase is a catalytic enzyme that degrades RNA, hence, the RNA will no longer be present to transform.
period between two periods of mitosis
Answer:
The period between mitosis divisions - that is , G1 , S and G2 - is known as interphase....Describe the inflammatory process that occurs and include the role that neutrophils and monocytes
Answer:
Inflammatory process: When the body is invaded by germs or a bacterial infection, the body’s immune system will respond to it by creating antibodies and sending white blood cells to fight the germs or infection. As the immune system interacts with the invading pathogen, the infection site will go through the inflammatory process. This process will vary, depending on area that is being affected. It usually will consist of an injury response, an immune response, tissue healing and wound repair. As the body goes through bacterial or physical trauma, it will immediately respond by sending white blood cells to the area. Produced in the lymph nodes and in bone marrow, white blood cells are released into the bloodstream, devouring and cannibalizing the invading pathogens. As part of the inflammatory process, the localized area usually will become tender and particularly sore. If the trauma is on the skin, then the area also will be prone to discoloration. The inflammatory process is closely linked to the immune system. The immune system will dilate the blood vessels, forcing blood that is rich with oxygen and white blood cells to surround the trauma area. Inflammation is the accumulation of white blood cells as they surround and kill the invading pathogen. As the trauma area heals, there will be a certain amount of pus. The pus is a collection of dead cells from the invading pathogen as well as cells produced by the immune system. Some swelling usually will occur during the inflammatory process. Protein and water will surround the area, making the area inflamed and slightly disfigured. The protein will contain antibodies to protect the area from being re-infected and will encourage tissue growth and healing. Pain can be an ongoing component of the inflammatory process. As the physiological aspects of the trauma area change, the area can be continuously painful and tender. The inflammatory process usually ends as soon as the invading pathogen is eradicated or as soon as the trauma area heals. Pus formations will usually stop, the area will become stable, and inflammation will subside.
Role of neutrophils & monocytes:
Tissue Macrophage Is a First Line of Defense Against Infection. Within minutes after inflammation begins, the macrophages already present in the tissues, whether histiocytes in the subcutaneous tissues, alveolar macrophages in the lungs, microglia in the brain, or others, immediately begin their phagocytic actions.
When activated by the products of infection and inflammation, the first effect is rapid enlargement of each of these cells. Next, many of the previously sessile macrophages break loose from their attachments and become mobile, forming the first line of defense against infection during the first hour or so. The numbers of these early mobilized macrophages often are not great, but they are lifesaving.
Neutrophil Invasion of the Inflamed Area Is a Second Line of Defense. Within the first hour or so after inflammation begins, large numbers of neutrophils begin to invade the inflamed area from the blood. This is caused by products from the inflamed tissues that initiate the following reactions: (1) They alter the inside surface of the capillary endothelium, causing neutrophils to stick to the capillary walls in the inflamed area. This effect is called margination. (2) They cause the intercellular attachments between the endothelial cells of the capillaries and small venules to loosen, allowing openings large enough for neutrophils to pass by diapedesis directly from the blood into the tissue spaces. (3) Other products of inflammation then cause chemotaxis of the neutrophils toward the injured tissues, as explained earlier. Thus, within several hours after tissue damage begins, the area becomes well supplied with neutrophils. Because the blood neutrophils are already mature cells, they are ready to immediately begin their scavenger functions for killing bacteria and removing foreign matter.
Smallpox (Orthopoxvirus variola) is the first human disease considered to be globally eradicated. All of the following factors played a huge role in its eradication EXCEPT for __________.
a. the existence of an inexpensive, effective vaccine
b. the removal of animal reservoirs in nature
c. rapid diagnosis due to obvious signs and symptoms
d. the fact that there are no asymptomatic carriers, so the disease is always diagnosable
Answer:
a
Explanation:
What is the meaning of botany?
Answer:
the scientific study of the physiology, structure, ecology, classification, and economic importance of plants.
In a changing environment, which of the following would be beneficial for the survival of a species?
O offspring with a variety of phenotypes
O offspring with little variation in phenotype
O offspring that closely resemble their parents
O offspring that are adapted to a specific environment
The last one
Explanation:
Offspring that are adapted to a specific environment is the beneficial for the survival of a species.
What is species?A species is an organism's fundamental unit of classification, taxonomic rank, and biodiversity. The biggest group of organisms in which any two individuals of the right sexes or mating types can conceive a fertile offspring, usually by sexual reproduction, is referred to as a species.
A species can also be identified by its karyotype, DNA sequence, anatomy, behavior, or ecological niche. In addition, since fossil reproduction cannot be studied, paleontologists use the chronospecies idea.
There are between 8 and 8.7 million different species of eukaryotes, according to the most recent accurate estimate.
All species are given a two-part name, or "binomial," with the exception of viruses.
Therefore, Offspring that are adapted to a specific environment is the beneficial for the survival of a species.
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which of the following is not possible consequence of surface meaning?
The figure describes what kind of evolution method?
A. Natural selection
B. Gene flow
C. Genetic Drift
D. non-random mating
Answer:
gene flow
Explanation:
16.Which part of your nervous system controls the involuntary actions like how and when your stomach goes through mechanical digestion?
Answer:
Autonomic nervous system
Explanation:
Which of these statements is NOT part of the Cell Theory?
A. All living things are composed of one or more cells.
B. The cell is the basic unit of life.
C. All new cells arise from existing cells.
D. They are all part of the Cell Theory.
E. None of them are part of the Unified Cell Theory
Answer:
D
Explanation:
The Cell Theory states:
All living things are composed of one or more cellsThe cell is the basic unit of lifeNew cells arise from existing cellsHope this helps you! Keep up the good work!Use the Lotka-Volterra competition model to determine whether the two species of Paramecium will coexist or drive each other to extinction in the scenario below. In these examples, N1 = N2, and K1 = K2 = 50.
Scenario 1: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 0.3, and β = 0.6.
Scenario 2: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 1.5, and β = 0.6.
Scenario 3: Determine the outcome of the competitive interaction between P. caudatum and P. aurelia if K1 = K2 = 50, α = 0.9, and β = 1.2.
Answer:they drive each other to extinction
Explanation:
hola como estan soy nueva
Answer:
Buena gracias
Explanation:
Who do we balance a chemical equation
Answer:
We have to balance chemical equations because you need to satisfy the law of conservation of matter. That states that matter cannot be produced or destroyed in a closed system. The law of conservation of mass governs the balancing of a chemical equation.
Answer:
I think you meant how?
Explanation:
but always you balance a chemical equation by looking at how many atoms you have for each element. For example we have the chemical equation Na + Cl2----> NaCl
so there's 1 Na atom
there's 2 Cl atoms
and for the product side
there's 1 Na atom
there's 1 Cl atom
TO BALANCE THIS you have to make the reactants side equals the product side by ADDING COEFFICIENTS.
so it would be 2Na + Cl2 ---> 2NaCl
reasons why transpiration is important in plant
The middle portion of unspecialized mesoderm from which cartilage, bone, and blood develop is called . The mature cells that live in cartilage and maintain the matrix around them are . is a type of cartilage with a net of collagen fibers to help resist compression and tension. Any tissues that exist in layers and form linings or coverings fall into the category of . is the type of connective tissue that forms a structural net to support other cells. Submit Request Answer Provide Feedback Next
Answer:
The correct terms or tissues are :
mesenchyme
chondrocytes
fibrocartilage
stratified epithelia
reticular connective tissue
Explanation:
1. Mesenchyme is comprised of loose cells embedded in a mesh of proteins and fluid that makes the middle portion of the unspecialized mesoderm from which cartilage, bone, and blood develop.
2. The mature cells that live in cartilage and maintain the matrix around them are chondrocytes.
3. Fibrocartilage is a type of cartilage with a net of collagen fibers to help resist compression and tension.
4. Any tissues that exist in layers and form linings or coverings fall into the category of stratified epithelia.
5.. Reticular connective tissue is the type of connective tissue that is a supportive structural network fibre to support other cells.
What are the sum of all life functions 
Answer:
Regulation, Control, Coordination, Growth, Nutrient, Nutrition, Homeotasis
Next they evaluated the prediction using a specific experimental procedure they collected experimental data by catching mice from the beach and releasing them inland. And by catching mice from inland releasing them on the beach.
a. True
b. False
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How are phone numbers in a phone book classified? When you are looking for someone's phone number , do you have to look through everybody's name to tind the number?
Answer:
There are usually categories for names and the categories are sorted in alphabetical order. But nowadays phone books only are used for businesses and all that
List the quality control measures taken to ensure contamination does not occur during the Chelex extraction process (DNA extraction) and give reason
Answer and Explanation:
To promote a good DNA extraction through the Chelex extraction protocol, it is important to follow some measures, which are essential for the entire process to take place efficiently.
The most important measure is to avoid contamination. In this case, all surfaces, container and substances used must be properly sterilized, preventing unnecessary elements from coming into contact with the DNA sample or the protocol reagents.
It is important that the researcher is wearing clean, appropriate clothing and gloves when using this protocol. This avoids impurities and contamination with the researcher's DNA.
Another precaution must be taken with the DNA sample and the reagents that will be used during the extraction. All must be stored correctly, preventing their degradation, especially the DNA, which is a very unstable molecule.
Finally, the researcher must strictly follow all the steps of the protocol as indicated.
I need someone who is kind enough to help with a year 7 science test for free thank you may god bless you.
Answer:
I can help the best I can with your science question. what is your question? I will assist you and explain to you in the best way possible!
Explanation:
Please either ask your science question in the comment or make a question on Brainly.
Which statement describes a feedback mechanism involving the human pancreas?
1
The production of estrogen stimulates the formation of gametes for sexual reproduction.
2
The level of oxygen in the blood is related to heart rate
3
The level of sugar in the blood is affected by the amount of insulin in the blood
The production of urine allows for excretion of cell waste
The level of sugar in the blood is affected by the amount of insulin in the blood describes a feedback mechanism involving the human pancreas.
What is Pancreas?This acts as an organ and a gland and is involved in the production of insulin which regulates sugar level in the blood.
It decreases the sugar level which is why option 3 was chosen as the most appropriate choice.
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Hownis the total magnification of a cell calculated
Answer:
The total magnification of a cell is calculated by multiplying the magnification of the ocular lens (also known as eyepiece lens) and the objective lens.
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Answer:a,c,d,b
Explanation:room anatomy
Answer:
1. a
2. b
3. b
4. c
Explanation:
Tools, skills, and science knowledge is known as what?
Answer:
I think the answer is capital
What are some factors/processes that contribute to genetic Variation:
Meiosis
Crossing Over
Mitosis
Protein Synthesis
What protects the living organisms on the earth from extreme heat and extreme cold?
Gene regulation is a section of the DNA that contains the genes for the proteins needed for a
specific metabolic pathway.
A True
B False
Answer:
The correct answer is - B. false.
Explanation:
A section or segment of the DNA that contains the genes for the proteins needed for a specific metabolic pathway is called an operon. Gene regulation on other hand is the process of an organism to control which genes are transcribed.
Gene regulation is the ability of turning the genes on or off for transcription. It is regulated by various ways such as chemically modifying genes and using regulatory proteins.
In which layer of the atmosphere did the Concorde cruise?
Answer:
The Concorde aircraft cruised at Mach 2 at about 19,000 m (62,000 ft), and the SR-71 cruised at Mach 3 at 26,000 m (85,000 ft), all within the stratosphere.
Explanation:
Your Welcome:)
How do Earth's spheres interact as systems, both within each sphere and with other spheres?
Answer:
All the spheres interact with other spheres. For example, rain (hydrosphere) falls from clouds in the atmosphere to the lithosphere and forms streams and rivers that provide drinking water for wildlife and humans as well as water for plant growth (biosphere). ... water evaporates from the ocean into atmosphere.
briefly discourse glycolysis
Answer:
Glycolysis:
Glycolysis is the primary step of cellular respiration in which glucose molecule is broken down to pyruvate in a set of reaction and produce energy. It generates two molecules of pyruvate, ATP, NADH and water. The process takes place in aerobic as well as anaerobic conditions in the cytosol of the cell cytoplasm.
Significance: generate pyruvate for the next stage, pyruvate oxidation, and release four ATP molecules while spends two ATP molecules in glycolysis, for a net gain of two ATP molecules.
Algal blooms, and the rapid proliferation of photosynthetic plankton can ultimately end up depleting all the oxygen from a body of water
Answer:
True
Explanation:
The proliferation of phytoplankton (microalgae) may decrease the visibility which causes oxygen (O2) depletion because they consume important amounts of O2 during the night and cloudy days. An algal bloom refers to the sudden increase in the population of algae in water bodies. These algae consume O2 and block the sunlight from underwater plants. As the algae die and decompose, O2 concentration in the water decreases, and, in consequence, most aquatic life that depends on oxygen dies.
Answer: true
Explanation:
took the test 2023 edg
