Cindy collects 20 insects for her biology class, all of which are spiders, dragonflies, and cicadas. (Note that a spider has 8 legs and no wings, a dragonfly has 6 legs and 4 wings, and a cicada has 6 legs and 2 wings.) She counts 138 legs and 36 wings altogether. How many cicadas does Cindy collect in total
Cindy collects 4 cicadas in total.
Let,
D represent the number of dragonflies
C represent the number of cicadas
S represent the number of spiders
Since the total number of insects is 20:
Equation 1
D+C+S=20
A spider has 8 legs, a dragonfly has 6 legs, and a cicada has 6 legs. Since the total number of legs is 138:
Equation 2
6D+6C+8S=138
A spider has 0 wings, a dragonfly has 4 wings, and a cicada has 2 wings. Since the total number of wings is 36:
Equation 3
4D+2C+0S=36
Multiplying equation 1 with 6 and subtracting it from equation 2:
6D+6C+8S-6(D+C+S)=138-6(20)
2S=18
S=9
Multiplying equation 1 with 4 and subtracting it from equation 3:
4D+2C+0S-4(D+C+S)=36-4(20)
-2C-4S=-44
Substituting S with 9:
-2C-4(9)=-44
-2C=-8
C=4
Thus, Cindy collects 4 cicadas in total.
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The right atrium is the receiving chamber for
the _______.
The left atrium is the receiving chamber for the ______.
A. body; lungs
B. lungs; body
C. kidneys; pancreas
D. pancreas; kidneys
Answer:
A. body; lungs
In this experiment, you will breed mice to investigate the role of gens when parents pass traits down to their offspring. State this in the form of a question that you can investigate through experimentation with mice.
In the experiment, it will pass on features or diseases can investigate through experimentation with mice.
What is mice?Mice are tiny mammals. Mice are recognized for their body length scaly tail, small, rounded ears, pointy snouts, and high breeding rates. The ordinary house mouse is the most well-known type of mouse (Mus musculus). Mice are a common choice for pets.According to several definitions, a mouse is any animal that belongs to the family Muridae of the mammal order Rodentia's genus Mus. Any little animal from the Muridae family or any rat-like small animal from one of the several rodent groups.Although some prefer nuts and seeds, mice that consume insects, spiders, and their young can help control numbers and stop infestations from occurring. Larger mice typically eat smaller centipedes, roaches, and crickets as food.Learn more about mice here:
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A youthful appearing patron presents an expired id and wants to purchase alcohol. based on best practices, what should the server do?
The server should politely tell him that he can not be served alcohol.
What should the server do?Alcohol is known to be able to affect both the mood and the psyche of the person that is consuming it. As such, care needs to be take regarding the individuals that have access to alcohol.
If the server is confronted with youthful appearing patron presents an expired id and wants to purchase alcohol, the server should politely tell him that he can not be served alcohol.
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Antibiotic X is made naturally by the bacterium Bacillus subtilis and is primarily only used to target skin infections caused by a select number of Gram positive bacteria. This type of chemotherapeutic drug would best be characterized as a(n):
Chemotherapeutic drug would best be characterized as a Narrow-spectrum antibiotic.
What is a narrow spectrum antibiotic?A limited number of bacterial species can be killed or inhibited by a narrow-spectrum antibiotic. Fidaxomicin and sarecycline are two examples of narrow-spectrum antibiotics. Narrow spectrum antibiotics are active against a selected group of bacterial types. They can act on either gram +ve or gram –ve but not both.
Only undesirable bacteria species may be killed or inhibited by a narrow-spectrum antibiotic (i.e. causing disease). As a result, it largely ignores the beneficial bacteria, reducing any unintended consequences on the microbiota. Low likelihood of bacterial resistance emerging.
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The hormone ______, which is secreted by the adrenal cortex, causes the kidney to conserve ________ ions and excrete ________ ions and indirectly helps to maintain systemic blood pressure.
The hormone adrenocorticotropin hormone (ACTH). which is secreted by the adrenal cortex, causes the kidney to conserve sodium ions and excrete potassium ions and indirectly helps to maintain systemic blood pressure.
What are hormones?
Hormones are chemical messangers or substances which are produced by the body and released to the sites where they are needed in the body.
They are substances produced by one tissue and conveyed by the bloodstream to another to effect physiological activity.
So therefore, the hormone adrenocorticotropin hormone (ACTH). which is secreted by the adrenal cortex, causes the kidney to conserve sodium ions and excrete potassium ions and indirectly helps to maintain systemic blood pressure.
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The most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is
Most important factor determining whether a receptor-operated ion channel is inhibitory or excitatory is whether the permeant ion's reversal potential is positive or negative to the threshold.
What are ion channels?Ion channels are pore-forming membrane proteins that allow ions to pass through the channel pore.Their functions include establishing a resting membrane potential, shaping action potentials and other electrical signals by gating the flow of ions across the cell membrane, controlling the flow of ions across secretory and epithelial cells, and regulating cell volume. Ion channels are one of the two classes of ionophore proteins, the other being ion transporters.To learn more about Ion channels,
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Underestimation of blood pressure will occur if the blood pressure cuff's width covers?
In adult blood pressure cuff size is 181 from 25 to 7 year old, which is allocated to random sequence that the measurement of blood pressure using a cuff .
systolic and diastolic blood pressure is underestimated from 3 to 5 mm Hg in men and 1 to 3 mm Hg in women's .Blood pressure cuff is a monitor which used to measure the blood pressure. Its is composed of inflatable cuff to collapse and release the artery under the process.
Mercury and anterior used to measure the blood pressure . The cuff is wrapped around your arms in upper side and inflated to stop the flow of blood in arteries.
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Axons of the spinal nerve that innervate the ventrolateral body surface, structures of the body wall, and limbs make up the
Axons of the spinal nerve that innervate the ventrolateral body surface, structures of the body wall, and limbs make up the Ventral ramus.
The anterior portion of a spinal nerve is known as the ventral ramus. Shortly after a spinal nerve exits the intervertebral foramen, it branches into the dorsal ramus, the ventral ramus, and the ramus communicans. These contain information that is both sensory and motor.
The sensory and motor fibres that innervate the muscles, joints, and skin of the lateral and ventral body walls as well as the extremities are carried by the spinal nerves' ventral ramus. They continue to be separate from one another throughout the thoracic region and each innervates a small section of muscle and skin along the sides, chest, ribs, and abdominal wall.
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Which of the differences listed here could be found among molecules of the same monosaccharide?.
Monosaccharides can differ from one another in: the number of carbon atoms they contain.
Monosaccharides can be divided into groups according to the number of carbon atoms in the molecules: trioses have 3-C atoms, tetroses have 4-C atoms, pentoses have 5-C atoms and hexoses have 6-C atoms. Each of these groups have different compounds, each with the same molecular formula. The bonds can be different between two monosaccharides. There is a difference in the orientation of a hydroxyl group in the ring form of monosaccharides. A glycosidic bond can lead to two possible stereoisomers at the anomeric carbon of one sugar. Also, the many hydroxyl groups of another sugar allow for several possible regioisomers.
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Peer review is the process
A.
by which scientific work is reviewed by anonymous, independent experts.
B.
by which scientists are rated on their yearly contributions to the field.
C.
through which a theory can become a law.
D.
None of the above
Peer review is the process (A) by which scientific work is reviewed by anonymous, independent experts.
Peer review is the procedure by which an expert or group of experts evaluate a scientific research article or research work before publishing it in any scientific journal. The experts assess the validity, quality and originality of the scientific work or research article for publication.
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Which best describes alleles?
A. They are usually fundamental or modern.
B. They are usually physical or spiritual.
C. They are usually true or false.
D. They are usually dominant or recessive.
Answer:
D. they are usually dominant or recessive.
Explanation:
alleles are pairs of genes found on a particular spot a chromosome. If one is dominant over the other it give rise to a particular trait.
Which molecule will undergo only london dispersion forces when interacting with other molecules of the same kind?.
Butane, C₄H₁₀ will undergo only London dispersion forces when interacting with other molecules of the same kind.
London dispersion force:
The weakest intermolecular force is called the London dispersion force.When the electrons in two nearby atoms occupy positions that cause the atoms to temporarily form dipoles, the resulting transient attractive attraction is known as the London dispersion force. There are instances when this force is referred to as an induced dipole-induced dipole attraction.Butane molecules only exhibit London dispersion forces because they are non-polar and have a symmetrical distribution of electron density.
Butane:
It is a covalent non-polar molecule. Every C-C and C-H bond is non-polar. This is because there is little or no electronegativity difference between C and C in C-C bonds and none between C and H in C-H bonds.Learn more about the London dispersion force here,
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That the allele that gives human red blood cells increased resistance to malarial parasites also reduces the amount of oxygen those cells can carry demonstrates
That the allele that gives human red blood cells increased resistance to malarial parasites also reduces the amount of oxygen those cells can carry demonstrates Pleiotropy.
What is Pleiotropy?
Pleiotropy is when a single gene demonstrates multiple phenotypic traits.
The cause of pleiotropy is the development of several distinct by overlapping mechanisms.
The phenotypic traits determine the external or the physical features of the organism. This could be the height, the weight, the color, etc.,
The phenotype of an organism is influenced by its genetic makeup.
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Which of the following statements might someone use to most support a decision to buy organic produce?
The agricultural demand has caused water shortages in many areas.
The living conditions of livestock have decreased due to overcrowding.
The use of chemicals on crops poses known health risks to humans.
The application of pesticides has had a negative environmental impact.
The use of chemicals on crops poses known health risks to humans. this statement most support a decision to buy organic produce.
The agriculture industry has become more industrialized, which has increased the chemical load on the environment. Agrochemicals known as pesticides are applied to agricultural fields, public health initiatives, and urban green spaces to protect people and plants from numerous diseases. Their side effects, however, can be a significant environmental health risk factor due to their proven capacity to have a wide range of detrimental health and environmental impacts.Produce that is organic uses fewer pesticides.Because organic food lacks preservatives that extend its shelf life, it is frequently fresher.Organic farming typically benefits the environment.Animals kept organically are not fed animal byproducts, growth hormones, or antibiotics.learn more about organic produce here: https://brainly.com/question/14318031
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A moderate-intensity activity lasting for which duration uses the aerobic system?
A moderate-intensity activity lasting for which duration uses the aerobic system is called Lactic Acid System.
What is the purpose of the Lactic Acid System?
The anaerobic lactic short-term (lactic acid, no oxygen) system starts to provide more energy to power the muscle.
Blood glucose and muscle glycogen reserves serve as the system's fuel sources. This mechanism also generates lactic acid as a byproduct in addition to energy (ATP).
What is Aerobic system?
The aerobic energy system refers to the oxygen-aided burning of lipids and carbohydrates.
The quantity of energy that may be expended during a single bout of vigorous exercise restricts the anaerobic pathways' ability to regenerate ATP at high rates.
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Many studies have model the niches of species, however, most fail to describe the specific niches being modeled
Hutchinson's definition from 1957 is the finest one that can be found. An n-dimensional hypervolume known as an ecological niche is where a species can sustain a livable population. The tolerance boundaries must be understood in order to comprehend this. These are the constraints that place limits on the organism. For instance, if the outside temperature exceeds 55 °C, a dog will perish. Therefore, 55 °C is one temperature that a dog can tolerance limits for temprature in the dog is therefore 55°C.
specific niches ?
Systematics, ecology, conservation, public health, and other fields are increasingly using ecological niche modeling, or the assessment of the dimensions of a species' basic ecological niche, to forecast its worldwide spread. This method frequently (necessarily) relies on data that consists solely of presence records. Numerous modeling techniques have been developed in recent years to estimate these connected representations of a species' ecology, distributional biology, and evolutionary history. Despite this, many of these techniques lack a formal foundation in ecological and evolutionary theory. In this article, we lay forth a formal foundation for the collection of methods known as "ecological niche modeling," examine some real-world examples of how they can be applied, and explain how the results should be interpreted.
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Individuals displaying symptoms of pain in their arms and legs, fatigue and diffuse joint and bone pain are suffering from a chronic condition known as?
Fibromyalgia syndrome.
Fibromyalgia is the second most common condition affecting your bones and muscles.
Fibromyalgia syndrome (FMS) is a common rheumatoid disorder of the muscles and bones that does not involve the joints. FMS causes pain and fatigue, and people with FMS feel as if their muscles have been pulled or overworked. The condition is often misdiagnosed and misunderstood.
But it does not cause elevated inflammation levels in the bloodstream. It does not cause joint damage and is not organ-threatening. Fibromyalgia is often triggered by a stressful event, including physical stress or emotional (psychological) stress. Possible triggers for the condition include: an injury or a viral infection.
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What is the term for the gurgling sounds that infants make in the back of their throats?
Babbling is the term for the gurgling sounds that infants make in the back of their throats
Babbling is a combination of consonant and vowel sounds — single syllable sounds like “pa” or “ba,” or long “ba-ba-ba-ba-ba.” Over time, baby babble evolves into word-sounds and eventually, basic words.
It is caused by air passing through normal saliva or refluxed milk. These gurgling noises are likely to build up during sleep. Slowly, the newborn learns to swallow more often. Nasal Noises are usually caused by dried mucus in the nose.
It usually occurs between 6 and 9 months. Babbling turns into baby jargon, or “nonsense speech.”
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If an overlap develops between the ranges of two closely related species, and if the species seek to occupy the same niche in the zone of overlap. What will probably happen in the zone of overlap?
The two species will interbreed and produce a hybrid species If an overlap develops between the ranges of two closely related species, and if the species seek to occupy the same niche in the zone of overlap.
When two members of the same species mate, the offspring receives half of each parent's DNA. This is what gives you a mixed-parent appearance. Hybrids are produced when two different species are crossed, and as a result, they have a 50% gene contribution from each parent species.
A hybrid in reproductive biology is a child born from the union of two parents belonging to different species or subspecies. A mule is an illustration of an animal hybrid. The creature is the result of breeding a horse with a donkey. Another animal hybrid is the liger, which is produced when a lion and a tiger mate.
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which occurence is defined as the deep disruption of the corneal epithelium that extends into the stromal layer
Corneal ulceration is the deep disruption of the corneal epithelium that extends into the stromal layer.
What is corneal ulceration?A corneal ulcer is an open sore on your cornea. It is an inflammation of the outermost layer of the eye that goes through Bowman's layer into the deeper layers of the cornea.Corneal ulcers can occur from direct injury to the eye, or from a bacterial, fungal, or viral infection.Symptoms include eye redness, eye pain, excessive tearing, sensation of a foreign body in the eye, and worsening or blurry vision.Corneal ulcers can threaten the patient's vision so it is an emergency condition requiring aggressive treatment and evaluation by a specialist.Trauma to the eye can cause a corneal abrasion or an ulcer. Abrasions are from superficial scrapes. Ulcers are from deeper gouges.Learn more about cornea here:
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Determine whether the following statement is true or false, and why: "The global distribution of resources is shared equally among countries. This is often a cause of conflict." A. True B. False, it should read "The global distribution of resources is not shared equally among countries. This has led to a lack of conflict." C. False, it should read "The global distribution of resources is shared equally among countries. This has led to a lack of conflict." D. False, it should read "The global distribution of resources is not shared equally among countries. This is often a cause of conflict."
The correct choice is False, it should read "The global distribution of resources is not shared equally among countries. This is often a cause of conflict" and is denoted as option D.
What are Resources?These are materials which are natural and add value to the living of the individuals in the area.
Resources are not shared equally among countries which occasionally leads to conflict and war due to different climatic conditions, topography etc.
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As autumn approaches, white-tailed deer begin to accumulate a layer of body fat. this is an example of which characteristic of life?
As autumn approaches, white-tailed deer begin to accumulate a layer of body fat. This is an example of response to the environment.
Four different strategies exist for humans to react to environmental stress: adaptation, developmental adjustment, acclimatization, and cultural reactions. A genetically based property known as an adaptation has evolved because it aids living things in surviving and procreating in a certain environment.All living things respond to environmental changes. These reactions may be brought on by adaptability, inheritance, or learning experience. An immediate, involuntary action or deliberate behavior can both be considered responses. A more persistent and slowly increasing form of responsiveness is evolution.
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States of tension or arousal that arise from a biological need and are unlearned are called _____
States of tension or a rousal that arise from a biological need and are unlearned are called drive.
An unlearned, or primal, drive is a state of tension (arousal) that results from the disruption of an organism's homeostatic condition. Food can be consumed to lessen a hunger drive, which is an a roused state brought on by hunger. Driving less leads to the restoration of equilibrium. Therefore, drives can be viewed as the result of a physiological requirement that an organism is compelled to lessen or eradicate. Learning theorist Clark Hull created an equation to demonstrate the connection between motivation and learning. It is the intensity of a person's need determines the intensity of their drive
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A hiatal hernia is a protrusion of a portion of the _____ through the ______. Group of answer choices stomach; diaphragm duodenum; pyloric sphincter small intestine; inguinal canal rectum; anus
A hiatal hernia is a protrusion of a portion of the stomach through the diaphragm.
Hiatal hernia is a condition which arises due to a rise in blood pressure. In this condition the stomach bulges up through an opening in the diaphragm. This condition interjects with the normal mechanism of reflux that occurs through the sphincter, which is present in the esophagus. This condition usually occurs when there is excessive pressure around the stomach due to activities like repeated vomiting. This condition is usually not fatal, however, in rare and serious cases this condition can effect the esophagus and cause esophageal cancer. This condition can also lead to leakage of stomach acids and cause ulcers in the alimentary canal. In serious cases of hiatal hernia the blood flow to and from the intestine can also be effected. Serious cases need surgical treatment.
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Answer the question as a CER (Claim, Evidence, Reason.)
Question: Which animal or plant should be protected from hunting or gathering in order to keep the healthiest ecosystem?
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Key stone species should be protected from hunting or gathering in order to keep the healthiest ecosystem. One illustration of a keystone species in North America is the American Beaver (Castor canadensis).
Claim: Some species are essential to the survival of the other species in the ecosystem in every environment.
Reason: A large predator or a little plant could be the keystone species, but without them the ecosystem might not exist. If a keystone species vanished, some ecosystems might not be able to adjust to environmental changes.
Evidence: Often, it takes the extinction of a keystone species for the importance of that species in an ecosystem to be fully understood. Robert Paine, an ecologist who popularised the phrase "keystone species" in the 1960s, discovered the significance of such species while researching starfish along Washington state's rugged Pacific coast.
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why does oxygen concentration in water decrease when sewage is discharge into river
Shugoshin protects the cohesins on the sister chromatids in meiosis during metaphase i. a. True b. False
Answer:
B. False
Explanation:
Which stage of the general adaptation syndrome is characterized by the body's attempt to restore homeostasis?
Resistance stage of the general adaptation syndrome is characterized by the body's attempt to restore homeostasis.
During the resistance stage, the body tries to counteract the physiological changes that happened during the alarm reaction stage. The resistance stage is governed by a part of the ANS called the parasympathetic.
The general adaptation syndrome (GAS) was first proposed by Hans Selye in his classic 1936 letter to the editor of Nature. It's consisting of three stages:- (1) alarm, (2) resistance, and (3) exhaustion.
Its resistance, during which the body adjusts its reaction in an effort to cope with a threat that is still present.
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Use what you know about the effect of heat on gases to explain why, the gases came out of the leaf when it was put into warm water.
Answer:This is due to the fact that the air in the leaf's air spaces expands and escapes through the lead epidermis's stomata.
Explanation:
This happens because when leaf are submerged it is using light to continue process of photosynthesis, this process includes the release of oxygen that we see in bubble format .
What is photosynthesis?When the leaf is put in warm water it is using light to continue the process of photosynthesis. Part of this process is to let oxygen out of the leaves. It is this oxygen that you are seeing as bubbles in the water.
Which part of the leaf the gas came from?The only way for gases to diffuse in and out of the leaf is though small openings on the underside of the leaf, the stomata.
Therefore, it can be understood that this happens because when leaf are submerged it is using light to continue process of photosynthesis, this process includes the release of oxygen that we see in bubble format .
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