Answer:
The nervous system transmits signals between the brain and the rest of the body, including internal organs.
Explanation:
Which of the following are examples of short-term, human-induced environmental changes? Select three answer choices
mass extinction
global warming
deforestation
ozone layer destruction
pollution
Explanation:
we have mass Extinction deforestation and pollution
Answer:
ACD
Explanation:
ozone destruction
mass extinction
deforestation
and humans cause holes in the ozone when they let out gasses
Deforestation is the process of getting rid of forested areas for land ect
and mass extinction happens when to many of one species are introduced for example Humans
Therefore its ACD because they are all man made
The statements below compare the similarities of ultraviolet light and microwaves.
Which choice does NOT belong in this list?
A Neither can be seen by the human eye.
B Scientists use both to study the structure of galaxies.
C They both have wavelengths that are longer than visible light.
D They are both types of radiation emitted by the Sun.
The choice which does not belong in this list is that they both have wavelengths that are longer than visible light.
What is Wavelength?This can be defined s the distance between corresponding points of two consecutive waves.
Ultraviolet light and microwaves can't be seen with the eyes because the wavelength is short. It is however shorter than visible light which is why visible light can be seen and they can't which makes option C the most appropriate choice.
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The incorrect statement is C, saying both ultraviolet light and microwaves have wavelengths longer than visible light, which is not true as ultraviolet light has shorter wavelengths compared to visible light.
Explanation:This statement is incorrect because ultraviolet light has wavelengths that are shorter than visible light, while microwaves have wavelengths that are longer than visible light. Electromagnetic spectrum knowledge indicates that as the wavelength decreases, the frequency increases, and vice versa, leading to different energies associated with different types of radiation such as ultraviolet light, visible light, and microwaves. While both ultraviolet light and microwaves are indeed forms of electromagnetic radiation emitted by the Sun and neither can be seen by the human eye, scientists also use both to study the structure of galaxies.
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Hey can someone answer this?
Proteins are one of the four main types of _________ .
biomolecules
living
complex
2.
One of the main functions of proteins is the creation of ________.
sugars
enzymes
3.
Enzymes are important for allowing and speeding up ________ in an organism.
reactions
chemicals
Answer:
Explanation:
1) biomolecules
2)enzymes
3)reactions
I think
1. Proteins are one of the four main types of Biomolecules.
2.One of the main functions of proteins is the creation of Enzymes.
3.Enzymes are important for allowing and speeding up reactions in an organism.
Thus, the correct option for 1, 2 and 3 are (A), (B) and (A) respectively.
What is Protein?Proteins are large biomolecules which are made up of amino acids. The basic unit of protein is called amino acids which are attached to each other in long chains. There are 20 types of amino acids which combine to form protein. They perform any functions and repair the structure and regulate the body tissues and organ .
There are so many proteins present in the body performing various functions like antibody, enzymes, messenger etc.
Enzyme is a type of protein which help to speed up the chemical reaction. It is also known as biological catalyst. For each type of substrate , there is a specific enzyme. Enzyme is effected by various factors like heat, harsh chemical conditions etc.
Enzyme support various important processes in the body. For example,
1. Digestive system
2.DNA replication
3.Liver enzymes production
4.Cell regulation
5. Respiration
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A group of scientists designed a clinical study to investigate the effects of cholesterol deficiency in humans. For the duration of the 8-week study, the adult subjects must live in a special research unit of a hospital. The only food the subjects can consume is a synthetic formula that contains all known nutrients, except cholesterol. Based on this information, you would expect:a. 100% of the subjects to show signs and symptoms of cholesterol deficiency within the first 3 weeks of participating in the study.b. about 50% of the subjects to show signs and symptoms of a cholesterol deficiency within the first week of the study.c. none of the subjects to show signs and symptoms of a cholesterol deficiency during the entire study.d. about 10% of the subjects to show signs and symptoms of a cholesterol deficiency within the first week of participating in the study.
Answer:
c. none of the subjects to show signs and symptoms of a cholesterol deficiency during the entire study.
Explanation:
this is because the blood cholesterol is from two sources. Nearly 80% of the cholesterol the body needs are made by the liver and intestine.certain small amounts are also produced in the adrenal glands and the reproductive organs.The remaining fragment amounts comes from the diets.
Therefore even if these subjects were fed with diet without cholesterol, it will not have any significant effects on the body cholesterol composition. Therefore no symptoms of its deficiency will be observed.
Generally it biosynthesis is regulated by the amount of cholesterol present in the blood.
Because the North had more T ), it could
produce more weapons than the South could.
Answer:
factories
Explanation:
Whenever diploid populations are in hardy-weinberg equilibrium at a particular locus
Explanation:
Hardy Weinberg equilibrium states that in a population, the sum of allelic frequencies as well as genotypic frequencies remains same over generations
There are five assumptions regarding this equilibrium: there should be random mating, no immigration and emigration, no mutation, no natural selection and population should be large and non evolving
Whenever diploid populations are in Hardy Weinberg equilibrium at a particular locus the allele's frequency should not change from one generation to the next, but its representation in homozygous and heterozygous genotypes may change
The allele's frequencies do not change across generations at HW equilibrium, but its representation in homo-zygous and heterozygous genotypes can change.
The Hardy Weinberg (HW) equilibrium indicates that allele frequencies and genotypic frequencies will remain constant over generations.However, these values change in representation between homo-zygous and heterozygous individuals.The HW equilibrium requires the absence of different evolutionary forces (e.g., natural selection, mutation, etc).In conclusion, the allele's frequencies do not change across generations at HW equilibrium, but its representation in homo-zygous and heterozygous genotypes can change.
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Select the one statement that is false: a) All species of Plasmodium can cause relapses. b) Merozoites are the form of Plasmodium that invades red blood cells.c) Plasmodium sexual reproduction involves fusion of a male and female cell to produce a zygote.d) The "knobs" on infected red blood cells increase P. falciparum mortality by reducing immune system clearance of Plasmodium-infected red blood cells. e) Plasmodium has an organelle that specializes in taking up and using hemoglobin as a nutrient .f) Nearly all malaria deaths are caused by P. falciparum.
ANSWER: (A) All species of Plasmodium can cause relapses.
EXPLANATION: All species of Plasmodium can cause relapses is FALSE.
Based on series of research on malarial parasites, only two species of Plasmodium can cause relapses (P. vivax and P. ovale.).
These species of plasmodium are known for causing relapses i.e the reappearance of parasitemia after treatment of affected individuals.
However, it is assumed that the subset of the parasites that caused the primary infection caused the relapses.
Furthermore, individuals who are cured of their blood stage may have a subsequent infection without reinfection (relapses). This is caused by the presence of the latent (exo-erythrocytic) stage, which exhibit dormancy in the body.
Answer:
Select the one statement that is false: a) All species of Plasmodium can cause relapses
Explanation:
This statement "All species of plasmodium can cause relapses" is false, because only two species of Plasmodium can cause relapses. These two are Plasmodium vivax and Plasmodium ovale. These species can cause malaria, people can develop symptoms even years after the initial infection due to activation of a dormant hypnozoite in the liver.
Which diagram shows magnets aligned so they will attract each other?
C
The diagram shows magnets aligned so they will attract each other is D. as it shows the magnetic pole is showing attraction.
What is the magnetic pole?A magnetic pole, placed at every give up of a magnet in which the outside magnetic area is strongest. A bar magnet suspended in Earth's magnetic area orients itself in a north-south direction. The north-looking for pole of one of this magnet, or any comparable pole, is known as a north magnetic pole.
A magnet continually comes with poles: a north pole and a south pole. The major distinction between north and south pole is that a north pole is attracted toward the south pole of any other magnet whilst a south pole is attracted toward the north pole of any other magnet.
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What are intertidal communities so stressful on their inhabitants
Explanation:
Intertidal communities are found within the shoreline area reached by waters of the highest high tide and uncovered at the lowest low tide
Stressful environment due to interaction of physical factors, e.g., wind, waves, sunlight Organisms must be able to withstand desiccation, searing heat and freezingOrganisms on rocky shores are faced with challenges not encountered by organisms in the deeper ocean alternately submerged by incoming tide and exposed to air by ebbing tide exposed to salinity fluctuations due to rain and evaporation pounded by high energy wavesOrganisms attached to high intertidal locations face greatest challenge to maintain suitable body temperature and avoid water loss and their adaptations include: large body exposes less surface area, light color reduces heat gain , special adaptations of kidneys , aggregate in large clumps , close shells at low tide, e.g., barnacles Organisms in high latitudes produce anti-freezing type compounds during winter, these compounds are proteins located in their bloodBased on the general trend of your data, what happened to the heart rate and pulse amplitude immediately after exercise and then during recovery from exercise? What is the physiological advantage of these changes?
Exercise is very vital to the body,it a form of physical activity.the sole aim of excercise is to maintain stamina, flexibility,keep fit and be overly healthy and well.
When we excercise, our heart rate increases and then it returns to the normal rate when with rest,when we take a break.there is reflection of vasoconstriction in the fingers as the blood is shunted to only the exercising muscles because it is noted that the pulse amplitude of the heart is always small after excercise and and increases slowly during recovery.
The amount of blood the heart pumps in a minute,that is the amount of blood ejected by the contraction of the left ventricle into systemic circulation increases when we are exercising and resistance to blood flow by skeletal muscles decreases.the blood vessels will try to adapt to the condition (exercise) inorder to control blood flow and as well meet energy demands.
When we finish exercising,our body temperature increases which will inturn cause increase in the pulse rate and the blood in our body makes way to our skin,hands and legs inorder to clear off the energy that was generated by the body(muscles) during exercise
Explain how it is that actin and myosin in the sarcomere never actually shorten and yet the muscle as a whole does.
Answer:
The muscle fibers are pulled by the myosin and sarcomere together, resulting in the shortening of the fibres, but the sarcomere and myosin just move.
Explanation:
During muscle contraction, each sarcomere shortens, bringing the Z discs close together. There is no change in the width of the A band but both I bands and the H zone almost completely disappear. These changes are explained by actin and myosin filaments sliding past one another, so that the actin filaments move into A band and H zone. Muscle contraction thus results from an interaction between the actin and the mosin filaments that generates their movement relative to one another. The molecular basis for this interaction is the binding of the myosin to actin filaments that generate their movement relative to one another.
During muscle contraction, the actin and myosin filaments in a sarcomere do not actually shorten. Instead, they slide past each other, pulling the actin filaments towards the center and reducing the overall length of the sarcomere. This leads to the muscle's overall contraction, even though the individual filaments themselves do not shorten.
Explanation:The actin and myosin filaments in the sarcomere do not actually shorten during muscle contraction. Instead, they slide past each other in a process known as the sliding filament model of contraction. The myosin heads form cross-bridges by attaching to the actin filaments, pulling them towards the center of the sarcomere. This action reduces the distance between consecutive Z discs, thus shortening the sarcomere. The energy for this process is provided by ATP. While some regions such as the H zone and I band within the sarcomere do shorten, the thick (myosin) and thin (actin) filaments remain the same length. Their overlapping movements lead to the overall contraction of the muscle.
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What is wafting?
O
A. Gently pushing vapors toward your nose
B. Dipping your nose into a liquid
O
C. Inhaling deeply with your nose
D. Putting your nose in a jar of chemicals
Answer:
i believe its D
Srry if im wrong :(
Explanation:
What does the sequence of DNA determine?
Answer:
It determines everything about you.
Explanation:
Sequencing DNA means determining the order of the four chemical building blocks - called "bases" - that make up the DNA molecule. The sequence tells scientists the kind of genetic information that is carried in a particular DNA segment.
The sequence of DNA determines the order of amino acids in proteins, dictating their structure and function, and influencing an organism's traits.
The sequence of deoxyribonucleic acid (DNA) determines the specific instructions for constructing proteins, which are essential for the structure and function of a cell. These sequences encode for the order of amino acids, which are the building blocks of proteins. The process begins with a sequence of codons in DNA dictating the corresponding codons in messenger RNA (mRNA). The mRNA then guides the transfer RNA (tRNA) in the assembly of amino acids into a polypeptide chain that folds into a functional protein. Variations in the nucleotide sequence can lead to mutations, potentially altering the structure and function of the resulting protein and affecting an organism's traits.
were green algae the first plants
Answer:
Yes. Green algae were considered to be the first ancestral organism to be considered part of the Plantae Kingdom. However, the first land plants appeared around 470 million years ago. These plants were a sort of moss like organism.
An older adult client who is accustomed to taking enemas periodically to avoid constipation is admitted to a long-term care facility. In addition to medications, the healthcare provider prescribes bed rest and a regular diet. Which action should be implemented initially to help prevent the client from developing constipation?
1. Arrange to have enemas prescribed for the client
2. Obtain a prescription for a daily laxative for the client
3. Place a commode by the bedside to facilitate defecation
Answer:
Explanation: It will be a better option if the client is given a large glass of prune juice with warm water every morning because when
Prune juice and warm water is administered by the nurse this will promote easy defecation. Prune juice will irritate the bowel mucosa, thereby stimulating peristalsis. Fiber in the diet increases fecal volume, which stimulates intestinal motility and the reflex for defecation. Enemas should not be considered because they can promote dependency and can result in electrolyte imbalance likewise the routine use of laxatives promotes dependency. The client is bedbound and is unable to use a commode.
What may happen if a species goes extinct?
Answer:
Every living thing plays a role in the food chain and Earth's ecosystems, and the extinction of certain species, whether predators or prey, can leave behind significant impacts. ... “When a predator goes extinct, all of its prey are released from that predation pressure, and they may have big impacts on ecosystems.”
Explanation:
Extinctions can have serious ramifications on ecosystems and human welfare, such as collapsing ecosystems, affecting food production, and compromising air and water quality. The loss of keystone species is especially critical as it can lead to extinction cascades.
When a species goes extinct, it can have significant implications for human welfare and the health of ecosystems. Although extinction is a natural part of macroevolution, the current accelerated extinction rate could result in the loss of tens of thousands of species within our lifetimes. This loss can lead to the collapse of ecosystems, which negatively impacts food production, clean air and water, and human health. Especially troubling is the loss of keystone species, which can trigger an extinction cascade and disrupt entire communities. Therefore, the practical importance of biodiversity loss is significant, affecting ecological balance and the benefits that humans derive from nature.
An injury in which the epidermis remains intact, but blood vessels and cells in the dermis are injured,is called a(n):a.contusion.b.abrasion.c.concussion.d.avulsion.
Answer:
A- a medical term for common bruise.
Explanation:
This is a type of closed wound inflicted by a blunt object. Therefore the epidermis remains intact but there is disruption of the underlying dermis structure. Blood usually leaks from the damaged capillaries into the surrounding areas.And this marked the meaning of contusion.
It usually affects both the bones and soft tissues.When it occurs in the bone it is bone contusion, muscles as muscle contusion or as in the question;to the skin as skin contusion.
Adequate rests, cold compression, elevation of the affected part. or compression with bandage are the methods of treatment.
Bone contusion takes longer time to heal with X-ray examination,but other forms heal naturally.
A 76-year-old woman with emphysema presents with respiratory distress that has worsened progressively over the past 2 days. She is breathing through pursed lips and has a prolonged expiratory phase and an oxygen saturation of 76%. She is on home oxygen at 2 L/min. Your initial action should be to:A. increase her oxygen flow rate to 6 L/min.B. administer a beta-2 agonist via nebulizer.C. place her in a position that facilitates breathing.D. auscultate her lungs for adventitious breath sounds.
Answer: The correct answer to the question is option C
PLACE HER IN A POSITION THAT FACILITATES BREATHING.
Explanation: Emphysema is a condition of the respiratory system,in emphysema,there is significant damage of the air sacs in the lungs altering breathing and exchange of gases and leading to breathlessness.
Respiratory distress,pursed lips breathing,prolonged expiratory phase and low oxygen saturation all indicates chronic obstructive pulmonary disease.
One of the initial management of respiratory distress is proper positioning.cardiac positioning is the best position to ease breathing difficulty.
The woman should be made to lie on her back with a pillow under her head to support her,the best should be raised at an angle of 30° ,and two pillows should be placed under the hands and arms to support it two pillows placed under the both ones for support too.
This type of position will help relief tensing in the patients abdominal and respiratory muscles and as well ease the tension that occurs to the chest during gravity,promote venous return and prevent thromboembolism.
The patient can also be made to lie on her back,her head elevated with pillow and a pillow will be placed between her legs.
These positions makes the respiratory airways to relax and thus easing breathing.
How is the ecosystem of Cotopaxi different to that of the rainforest? Think about how the landscape affects what kinds of plants and animals live here.
The ecosystem of Cotopaxi differs from a rainforest due to different factors such as latitude, elevation, temperature, and rainfall. This results in a variety of biomes in Cotopaxi and much biodiversity in rainforests. Both ecosystems face challenges from environmental disturbances and human activities.
Explanation:The ecosystem of Cotopaxi, a high-elevation ecosystem, differs greatly from that of a rainforest due to factors such as latitude, elevation, temperature, and rainfall. For example, as you ascend the mountain, changes in these factors mean that you will encounter different biomes along the way. These can range from temperate forests at lower elevations, to tundra-like conditions at the peak.
In a rainforest, however, due to typically high temperatures and rainfall, you would see a great amount of diversity with plants like epiphytes and a variety of animals adapting to an arboreal lifestyle. On the other hand, terrestrial ecosystems like Cotopaxi, are comprised of a range of different biomes, including grasslands, desert-like areas, and eventually, ice-covered peaks. These differing conditions support differing vegetation and animal life.
Both ecosystems are, however, susceptible to environmental disturbances. This could be due to yearly variations in rainfall and temperature, or human activities like deforestation, pollution, and other harmful practices. Understanding these differences can be crucial for conservation efforts in these unique ecosystems.
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Which levels need to be correct for cells to function? Select four options. blood sugar body height body water body temperature blood oxygen
Answer:
blood sugar, body water, body temperature, and blood oxygen.
Explanation:
so (A) (C) (D) (E) hoped this helped :)
Answer:
1 3 4 5
Explanation:
The greatest preventable risk factor for cardiovascular disease is
Answer:
Raised blood pressure
Explanation:
People have the ability to change there diet, take medication, or exercise
What occurs during the gametophyte stage?
The plant produces spores.
The plant travels in the wind to a new location.
The plant produces sperm cells and egg cells.
The plant releases spores into the air.
Answer:
the is c
Explanation:
hope this helps
Answer: C The plant produces sperm cells and egg cells.
Explanation:
when is the classification division used
Final answer:
Classification and division are writing strategies used to organize information into categories or to break a whole into parts, helping to clarify a concept by showing the elements that comprise it.
Explanation:
The classification and division writing strategy is used when organizing information into categories or breaking a whole into parts. Classification paragraphs begin by identifying individual items that fit into a larger group, often helping to clarify a larger concept by showing the elements it comprises. For example, during a pandemic, essential workers can be classified into categories such as health care, childcare, and transportation. On the other hand, division paragraphs work by taking a large group or a single unit and breaking it down into its smaller, component parts. This could mean taking a larger concept like sports drinks and breaking it down into the types of drinks within this category.
do viruses have the ability to adapt
no i don't think they can
Answer:
. A virus can live in two different phases – the lytic phase (where the virus actively replicates in a host cell) and the lysogenic phase (where the viral DNA incorporate itself into the cell’s DNA and multiples whenever the cell multiplies). Sometimes a host does not have enough energy or supplies to support the virus to actively replicate, so it will switch to the lysogenic phase. The virus can eventually reenter the lytic phase when conditions are right.
Explanation:
why does the heart need to have such an abundant supply of blood?
(pig anatomy)
Answer:
Explanation:
The heart needs an abundant supply of blood to offer oxygen exchange for carbon dioxide and nutrition as well as take away waste products like carbon dioxide.
The pattern in which a population is spaced within an area is called *
5 points
Growth pattern
specific variation
dispersion
population density
Answer:
The correct answer is... Dispersion
Describe the action of the tricuspid valve when you squeezed the water-filled right ventricle
Answer:
Tricuspid valve is a structure present between right atrium and right ventricle. It is a one way valve composed of three flaps, hence the name. Blood flows from right atrium to right ventricle via it. It also prevents back flow of blood to atrium.
If a water filled right ventricle is squeezed, it will try to flow back into the right atrium. At this moment, the flaps of tricuspid valve will move upwards in horizontal position. As a result, the valve will close and water will not flow back to the right atrium.
Answer:
If you squeeze a water-filled right ventricle, the tricuspid would close to to keep water from flowing back into the right atrium.
Which electron orbital holds up to 8 electrons
Answer:
Explanation:
Each principal energy level above the first contains one s orbital and three p orbitals. A set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. Therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.
Answer:
the third electron shell
Explanation:
i have chart in my notebook from my science class
Loss of biodiversity matters not only with regard to mammals or other vertebrates, but also microbes. What statement below would encourage a wide range of people to view microbes as worthy of discovery and protection from extinction?
A. Microbes may be the most sensitive to the next large extinction event.
B. Microbes may produce unique proteins useful in genetic research.
C. Microbes play a role in digestion.
D. Microbes are much greater in species number than any other taxa on Earth.
Answer:
B. Microbes may produce unique proteins useful in genetic research
Explanation:
Biodiversity refers to the diversity of living beings present on Earth. The biodiversity is a very important component of the ecosystem as these living organisms are interlinked with each other. Therefore, the loss of biodiversity will affect the ecosystem.
When we look at the biodiversity a layman considers the living organisms which can be seen with eyes but the diversity also exists at the level of the micro-organisms.
The man-made activities are not only harming the macroscopic but also microscopic organisms. The microbes play an important role in our life like these days they are used by the scientific community to study the genetic and related fields like molecular biology. The microbes produce proteins that are consumed by humans.
Thus, Option-B is correct.
Which of the following correctly lists, in increasing order, the resistance of microorganisms to chemical biocides? View Available Hint(s) Which of the following correctly lists, in increasing order, the resistance of microorganisms to chemical biocides? gram-positive bacteria, endospores, prions prions, gram-negative bacteria, gram-positive bacteria mycobacteria, gram-positive bacteria, gram-negative bacteria, prions gram-negative bacteria, gram-positive bacteria, mycobacteria
Answer:
Gram-positive bacteria, fungi, endospores, prions
Explanation:
The above mentioned answer is in increasing order which are resistant to chemical biocides.
Gram positive bacterias are the easiest to destroy, then fungi is difficult than bacteria, endospore is more difficult to remove or destroy by chemical biocides and prions are the most resistant protein particles to the chemical biocides.
Prions are very difficult to kill by standard sterilization and disinfection procedures.
The correct order of increasing resistance of microorganisms to chemical biocides is: prions, gram-positive bacteria, gram-negative bacteria, and mycobacteria.
Explanation:The correct order of increasing resistance of microorganisms to chemical biocides is:
PrionsGram-positive bacteriaGram-negative bacteriaMycobacteriaPrions are the most resistant, followed by gram-positive bacteria, gram-negative bacteria, and then mycobacteria.
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