A slightly elevated temperature in our bodies can be beneficial when we got sick because this is how our bodies try to get rid of the pathogens or antigens that generate the infection. By doing this, microorganisms like bacteria face high temperatures in which they do not develop well their necessary metabolic processes to keep using our tissues to replicate themselves.
A. a gaseous structure
C. a liquid structure
A mineral, such as
the quartz shown
here, has which of
the following mineral
characteristics?
B. a crystalline structure
D. a plasma structure
A mineral, such as the quartz shown here, has a crystalline structure mineral characteristics.
When in contact with the majority of chemicals, quartz is chemically inert. It is useful in electronic equipment because of its electrical characteristics and heat resistance. Due to its shine, color, and diaphaneity, it can be used to create glass in addition to serving as a gemstone.
Trigonal-trapezohedral crystal class 32 includes quartz. Silica makes up the hard, crystalline mineral known as quartz (silicon dioxide). With each oxygen being shared between two tetrahedra, the atoms are connected in a continuous framework of SiO4 silicon-oxygen tetrahedra, giving the material its overall chemical formula of SiO2.
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an erosion of the mucosa of the lower esophagus, stomach, or duodenum caused by the breakdown of gastric barriers or by excessive amounts of gastric acid is called a(n)
Ulcers are caused by the destruction of gastrointestinal barriers or by the overproduction of stomach acid.
What is the digestive process?Ingestion, propulsion, mechanical or physical digestion, chemical digestion, absorption, and faeces are the six steps in the digestion process. Ingestion, the first of these procedures, is the process by which food enters the alimentary canal through the mouth.
Is stomach acid a barrier of any kind?Several mucosal defence mechanisms in the stomach guard it from harmful substances including hydrochloric acid. The mucus-bicarbonate barrier makes up the pre-epithelial barrier. The pH gradient created by mucus and the bicarbonate that mucus cells release helps to keep the epithelial cell surface close to neutral.
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Draw a cross-section of the spinal cord and show how the three types of neurons are involved in reflex action. Make sure to show how these neurons interface with the leg. Is the brain involved in this pathway? why or why not?.
The brain is not involved in a reflex action, because reflex action is spontaneous without going through the thought process. All three types of neurons are involved in reflex action: Stimulus → receptor → sensory neuron → spinal cord → delay neuron → motor neuron → effector → reflex.
How does the reflex action occur?Reflex movements in the body occur when there is stimulation received by nerve cells or neurons in the body. Examples of these stimuli are hot temperatures or the presence of water droplets that enter the eye
The mechanism begins with a stimulus from the outside. The range will be felt by the receptors. The receptor then sends electrical impulses about what it feels on sensory neurons. Impulses are then sent through delay neurons. Delay neurons are interneurons that are in the spinal cord and connect sensory neurons to motor neurons. The delay neurons then send impulses to the motor neurons and then to the effectors to create reflexes.
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Nucleus,cell membrane, cell wall, mitochondria, cytoplasm, nucleolus,vacuoles, lysosomes,ribosomes, nuclear membrane,centriole,chromatin,
Golgi complex , endoplasmic reticulum,chloroplast
Answer:nucleus
Explanation:
after a meal, both insulin and glucagon are secreted into the blood stream. what is their relationship?
Together with the hormone insulin, glucagon regulates blood sugar levels and helps to maintain target ranges. Insulin is produced to prevent blood sugar levels from increasing too high (hypoglycemia) while glucagon is released to prevent blood sugar levels from falling too low (hyperglycemia).
The pancreatic islets of Langerhans' alpha cells release the peptide hormone known as glucagon. The best-known effect of glucagon is to promote glucose synthesis in the liver and hence maintain appropriate plasma glucose concentrations. Hypoglycemia is physiologically the most powerful secretory stimulation. The metabolism of hepatic lipids and amino acids is also influenced by glucagon, which may lead to an increase in resting energy expenditure.
The INS gene in humans encodes insulin, a peptide hormone generated by beta cells of the pancreatic islets. It is regarded as the body's primary anabolic hormone.
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Based on your answer to question 1, what do you think could be done to reduce levels of carbon dioxide in the atmosphere? What could people change that would reduce the burning of fossil fuels? WILL MARK BRAINLIEST
By using fossil fuels, which releases additional carbon dioxide into the atmosphere as in form of gases such as carbon dioxide (CO₂), we are altering the carbon cycle.
What do you mean by carbon dioxide?One carbon atom is covalently doubly linked with two oxygen atoms in each of the molecules that make up carbon dioxide. It exists in the gas state at room temperature. Carbon dioxide acts as a greenhouse gas in the atmosphere since it absorbs infrared light rays despite being transparent in the visible. Numerous health impacts from CO₂ exposure might be experienced. These symptoms can include a coma, hypoxia, convulsions, sweating, a tingling or pins-and-needles sensation, headaches, disorientation, restless, a tingling or pins-and-needles feeling, and difficulty breathing.
Where does carbon dioxide come from?The majority of animals, which exhaust in the form of a waste product, are naturally sources of carbon dioxide. The main source of carbon dioxide emissions from human activity is energy generation, which includes coal burning, oil, or natural gas. In milliequivalents per liter (mEq/L) either millimoles per liter (mmol/L), the typical range is 23 to 29. The typical value ranges may vary a little bit between labs. The fossil fuel burning like coal, natural gas, and oil is responsible for 87 percent among all human-produced emissions of carbon dioxide. The burning of fossil fuels is the main human emission source of carbon dioxide.
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The following depicts the cell wall of a bacterial cell. Is this cell a gram negative, or a gram positive bacteria Briefly explain why.
The bacteria shown in the image is Gram negative because of following characteristic-
0. The wall is two-layered.
,1. The wall is wavy.
,2. Outer membrane is present.
Gram negative bacteria are those which do not retain the Grams stain which consist of alkaline solution of crystal violet,then treated with 0.5% iodine solution followed by washing with water or acetone.
The bacteria which retain blue or purple color are gram positive bacteria.
Ex of Gram negative bacteria-E.coli
which of the following are sources of antibodies for serological testing? which of the following are sources of antibodies for serological testing? cells producing monoclonal antibodies vaccinated animals, cells producing monoclonal antibodies, and viral cultures viral cultures vaccinated animals and cells producing monoclonal antibodies vaccinated animals
Monoclonal antibodies and vaccinated animals are two sources of antibodies used in serological testing.
Which of the following is a test to see if soluble antigens are present?It is possible to modify the agglutination test to measure soluble antigens. The term "hemagglutination inhibition" refers to this test. Hemagglutination inhibition refers to the measurement of soluble antigen's capacity to prevent antibodies from adhering to antigen-coated red blood cells.
Which antibodies are present in saliva, tears, and mucus?IgA is the primary class of antibody present in a variety of bodily fluids, including tears, saliva, respiratory, intestinal, and colostrum secretions. IgA levels in serum are quite low. B cells found in the body's mucous membranes create IgA.
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Which of the following is NOT a method for living more sustainably on Earth?a) Repair products when it breaks or gets worn out. Many brand name companies including clothing and electronic stores offer repair services for you nowb) Reuse with refillable glass or stainless stell water bottles and by shopping with cloth bags at grocery and retail stores including malls.c) Refuse to use single-use products such as plastic grocery bags and takeout utensils including straws and condiments for ketchup and soy sauce.d) Recycle by using plastic shopping bags to dispose paper/plastics/bags/metals into blue bins and composting organic waste into green bins.e) Reduce by shopping only in-store (online shipping orders have escess packaging) and buying only essential costumer products (not the latest fashion in clothing or the newest model in electronics) or think about renting seasonal items rather than buying it.
Sustainability is about maintaining the ecosystem diverse and productive, even attending the needs of production for humanity as well.
In order to do so, it's important to be careful about the disposal of any types of trash. So, avoiding to dispose of trash unnecessarily is really important, therefore A is correct. It is also important to avoid creating unnecessary trash, what happens when we chose to consume only water from plastic bottles, for example, instead of using reusable bottles. This means that B is also correct. Talking about not creating unnecessary trash, C is also correct, because it talks about avoiding single-use products. Also, avoiding the creation of unnecessary trash is related to E, because it's about avoiding excess packaging and/or avoid buying unnecessary items, reusing the same ones instead. Therefore, alternative D is incorrect, because while it talks about recycling it also incites the usage of plastic bags to dispose trash, which could be replaced by paper bags, for example.
How do metamorphic and igneous rock, exposed in mountains, become sedimentary rock over time?
Answer:
Erosion and weathering
Explanation:
First what is erosion and weathering?
Erosion-Resources worn away and transported by natural forces from one place to another.
Weathering-Being worn away by long exposure to the atmosphere.
Now that we know that, what does this have anything to do with it?
Metamorphic and igneous rocks are weathered and eroded down till they turn into Sediment , after they turn into Sediment, they will be compressed and form sedimentary rocks over time and start the rock cycle again.
Respiration occurs at which of the following structures of the respiratory system?
A.
Alveolar ducts
B.
Alveoli
C.
Bronchioles
D.
Lungs
The respiratory system's alveoli are where breathing takes place (option -B) is correct answer.
Where in the respiratory system does respiration occur?in the lungs
The bronchi within the lungs branch into smaller bronchi and still smaller tubes known as bronchioles. Alveoli, which are tiny air sacs at the ends of bronchioles, are where the actual exchange of oxygen and carbon dioxide occurs.
Your lungs, blood vessels, and airways are all a part of it. A component of the respiratory system are the muscles that move your lungs. Together, these components circulate oxygen throughout the body and eliminate waste gases like carbon dioxide.
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List and explain three examples of evidence for Evolution by naturalselection
The three main examples of evidence for Evolution by natural selection are:
1. Fossil evidence - fossils are preserved remains of living beings, such as animals, plants and other organisms from the past. The show how those organisms were in the past and they can be ued to try ato understand how they evolved;
2. Biogeographical evidence - biography is the study of the geographical distribution of organisms, and it can help us understand migratory movements that could result in different species living in different places but from the same ancestor, for example, among other things (like how and when species may have evolved);
3. Anatomical evidence - anatomical evidences are similarities in anatomy and structure of different organisms, showing that they could be related.
Which of the following Kingdoms cannot get energy from Photosynthesis? A. Eubacteria B. Fungi C. Protista D. Planate
As we know there are three types of organisms capable to perform photosynthesis cyanobacteria (eubacteria), plants (Plantae), and algae (protist), so we can say that the correct answer is option B fungi.
A pair of chromosomes, one inherited from the mother, the other from the father. They occur in pairs, are similar size and shape, and carry the same gene sequences.
A homologous chromosome is one of two chromosomes that share the same gene sequence, , chromosomal lengths, and centromere position. Two chromosomes, one paternal and one maternal, homologous pair.
What does biology homologate?possessing the same conventional arrangement and position. In biology, the term "homologous" can look at two anatomical features or behavioral characteristics that developed from a structure or characteristic of their shared ancestor organism.
Homologous structures: what are they?Organs or skeletal components that are homologous in structure are those that indicate a relationship to a common ancestor due to their similarities. They can be found in mammals and other species. Both the appearance and the function of these structures don't have to be identical.
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Mendels law of segregation states:A. Two alleles of each gene are packaged into separate gametes B. Two alleles from each gene move apart from each other during gamete formation C. Each individual inherits two alleles for each gene and these alleles may be the same or different D. All of the above
Mendel's law of segregation refers to the fact that each individual has two alleles of the same gene, and these alleles are separated in the formation of the gametes, so each gamete has only 1 allele of each gene.
This means that the two alleles of each gene will be in separate gametes (A and B are true) and that each individual has two alleles of each gene (C is true).
So, the right answer would be D) All of the above
When doing medical research with human subjects, which four limitations are unavoidable?
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables.
It’s impossible to come up with testable scientific questions for human subjects.
There are ethical or privacy concerns to consider.
In medical research with human subjects, four limitations are unavoidable A, B, C, E.
What is medical research with human subjects?An example of medical research is one that incorporates elements of biology, chemistry, and pharmacology.
The following are some restrictions on medical research using human subjects:
Trials on the same subjects can frequently not be repeated.
Subjects could give a false medical history.
Trying to manage every potential variable might be challenging.
There are ethical and privacy issues to take into account.
Therefore, human subjects include inaccurate medical histories, and repeat trials, hence option A, B, C, and E are correct.
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Answer:
It’s often impossible to repeat trials on the same subjects.
Subjects may report an inaccurate medical history.
It can be difficult to control all possible variables.
There are ethical or privacy concerns to consider.
Explanation:
When a substance changes from a liquid to a gas, what happens to the
motion of its particles?
A. They move at the same speed but in random directions:
B. They move more quickly and independently.
C. They move more slowly and are fixed in place.
OD. They move at the same speed and in the same direction.
Answer: B. They move more quickly and independently.
Explanation:
In gases the particles move rapidly in all directions, frequently colliding with each other and the side of the container. With an increase in temperature, the particles gain kinetic energy and move faster.
Which of the following images shows a chemical change occurring?
water condensation
© akchamczuk / iStock 2018
crushing a can
© gbrundin / iStock 2018
stretching an elastic
© emregologlu / iStock 2018
old rusted boat
Public Domain
Answer: Old rusted boat or stretching an elastic. If your good at math can you please help me and provide an explanation. Olivia has read 40 pages of a 70 page book, 60 pages of an 85 page book and 43 of a 65 page book. What is the percentage of pages Olivia has not read?
Explanation:
The space between the soil is part of the _________.
Answer:The space between he soil is part of the pores.
Explanation:The volume of all the pores divided by the volume of the soil profile is the porosity. Water, air and other gases move into and out of these pores. Soil-water is the water that fills part or all of the pores.
Please help me with this question
Answer:
b
Explanation:
Plants gather the suns energy with light-absorbing molecules. What are these molecules called?.
Answer:
photosystems
Explanation:
The molecules that hold the pigments that capture light energy used in photosynthesis are called photosystems. There are actually two types of photosystems in the thylakoid membrane (PSI) (PSII).
in keeping with the scientific method, lab reports should be organized in the following sections: i. introduction ii. materials and methods iii. results iv. discussion
The sections listed below should be included in lab reports:
i. introduction ii. materials and methods iii. discussion iv. results
How should a biology lab report's introduction be written?The goal of the experiment is stated in a lab report's introduction, which also gives the reader some background information. Clearly and succinctly describe the subject of your report. Provide the reader with background theory, prior research, or formulas they should be familiar with.
Which steps of the scientific method should come first?Follow these steps to conduct an experiment: observe, ask a question, formulate a hypothesis, carry it out, gather data, analyze it, and report the findings.
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What is true of the elevation of every point along any given contour line?
Answer:
Every point on a contour line is of the exact same elevation
Explanation:
Every point on a contour line is of the exact same elevation. In other words, contour lines connect points of equal elevation. By definition, contour lines separate points of higher elevation from points of lower elevation.
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What is cancer?
Is cancer only one disease?
Explain
Cancer is a condition where cells in a specific part of the body grow and reproduce uncontrollably.
The cancerous cells can invade and destroy surrounding healthy tissue, including organs. Cancer sometimes begins in one part of the body before spreading to other areas. These substances capable of damaging DNA and triggering cancer are referred to as carcinogens.
Excessive sun exposure (UV)Chemical carcinogen exposure.High-dose chemotherapy and radiation (mainly in children being treated for existing cancers)Hormonal drugs.Immune-suppressing drugs (taken by transplant recipients)How cancer affects our body: Cancer can grow into, or begin to push on nearby organs, blood vessels, and nerves. This pressure causes some of the signs and symptoms of cancer. Cancer may also cause symptoms like fever, extreme tiredness (fatigue), or weight loss. This may be because cancer cells use up much of the body's energy supply.
No, cancer isn't a single disease.
Cancer is a group of diseases characterized by the uncontrolled proliferation of cells. Ignoring the body's signal to stop, malignant cells multiply to form tumors in organs and tissues or, in the case of blood cancers, crowd out normal cells in the bloodstream and bone marrow.
Some examples of cancer treatments of cancer are, Surgery, Chemotherapy, Radiotherapy, Cancer drugs, Hormone therapy, Stem cell, and bone marrow transplants, and Targeted cancer drugs.
A new treatment involving a photosensitizing agent that makes cells more sensitive to light and, by doing so, causes cancer cells to be destroyed when laser light is directed on a cancerous area.
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Scientific researchers discovered agents that behaved like bacteria causing diseases such as rabies and hoof-and-mouth, but were much smaller. It became the general view that viruses were biologically "alive." This perception changed in 1935 when the tobacco mosaic virus was crystallized and scientists demonstrated that the particles lacked any mechanisms necessary for metabolic function. It was determined that viruses consisted of a nucleic acid, DNA or RNA, surrounded by a protein shell. Viruses exist in two distinct states. When not in contact with a host cell, the virus remains entirely dormant. During this time there are no biological activities occurring and the virus is nothing more than a static organic particle. Viruses can remain like this for extended periods of time, waiting to come into contact with the appropriate host. When the virus comes into contact with a host, it becomes active, reacts to its environment and/or host and directs its efforts toward self-replication. The viral goal now is to produce more viruses to attack host cells.
The characteristics of life: many are listed in the passage describing viruses. One important piece of evidence arguing against life for viruses is implied by the passage; not stated directly. Viruses are not living, because, as implied by the passage, they
A. Lack a nucleus
B. Have no DNA
C. Are not cellular
D. Do not reproduce
According to the given passage, viruses are not living because they (C) do not have a cellular organization.
Viruses lack a cellular organization which is a basic feature of all living organisms. A virus is a nucleoprotein, with the genetic material enclosed by a protein coat. The genetic material could be either DNA or RNA. The genetic material is responsible for causing infection in the host.
Viruses are inactive outside their specific host cell. They are non-cellular organisms. They possess an inert crystalline structure outside the living host cell. The protein coat of a virus, i.e. capsid, serves as a protective covering for the genetic material.
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Parts of a mast cell and their functions
Our bodies include mast cells, a type of white blood cell. They discharge "mast cell granules," which are chemicals that can help fight off sickness and infection.
Components of mast cell
Histamine, heparin, a number of cytokines, chondroitin sulphate, and neutral proteases are among thee inflammatory mediators that are stored in the 50–200 massive granules that make up the cytoplasm of the mast cell.
Functions of mast cell
Mast cells help regulate other types of immune responses as well as how the immune system reacts to certain germs and parasites. They contain substances including growth factors, cytokines, heparin, and histamine.
Human mast cells come in two different phenotypes: connective tissue mast cells, which produce chymase, tryptase, and carboxypeptidases, and mucosal mast cells, which exclusively produce tryptase (6, 7). In different tissues and organs, mast cell activation and mediator release have varied effects.
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What have the scientific studies identified as the major cause of acid rain in the united states?.
Burning fossil fuels causes sulfur and nitrogen compounds to be released into the atmosphere, which is the main cause of acid rain in the United States.
What is acid rain?Any type of precipitation that contains acidic elements, such as sulfuric or nitric acid, which falls to the ground from the surroundings in wet or dry forms is considered as acid rain, also known as acid deposition. This can apply to rain, snow, fog, hail, corrosive dust, and even the absence of sunlight.One effect of air pollution is acid rain. Fuel-burning gases mix with oxygen in the air and water vapor to create acids, which then fall as rain on the earth's surface.It has been demonstrated that acid rain has negative effects on trees, freshwaters, soils, destroys insects and aquatic life, causes paint to peel, causes steel constructions like bridges to corrode, and causes stone buildings to weather.To learn more about acid rain refer to :
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Amari sorted knives, forks, and spoons when he put them in
the kitchen drawer.
What is most likely the way Amari sorted the silverware?
Shape
O Size
O Matter
Color
Polyploidy is the condition in which A. a piece of a chromosome breaks off and reattaches to another chromosome. B. an organism has an extra set of chromosomes. C. a mutagen speeds the mutation rate. D. an insect develops a resistance to a pesticide.
Answer:
B
Explanation:
it is a eatra set of it set it a chromosome that how it that
Which parts of the brain constitute the emotional brain known as the limbic system?.
The part of the brain that is the emotional brain is known as the limbic system, namely the frontal lobe.
The cerebrum is divided into 4 parts, namely:Frontal lobe: located at the front of the brain, roughly parallel to the forehead bone. This lobe controls movement, speech, behavior, memory, emotion, and personality, and plays a role in intellectual functions, such as thinking, reasoning, problem-solving, decision-making, and planning.Parietal lobe (upper): located behind the frontal lobe which controls sensations, such as touch, pressure, pain, and temperature, and also controls spatial orientation or understanding of size, shape, and direction.Temporal lobes: located on the right and left sides of the brain, near the ears. This lobe functions to control the sense of hearing, memory, and emotion, and also plays a role in the function of speech.Occipital lobe: located at the back of the brain which controls vision.
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