SCIENCE!!! HHHEEELLLPPP!!!
Are viruses alive? This a question debated among scientists throughout the world.

Scientists discovered the tiny, disease-causing agents that were believed responsible for such diseases as rabies and hoof-and-mouth disease. Initially, scientists classified viruses as “living”, but in 1935, they began to change their thinking.

Scientists crystalized the tobacco mosaic virus, noting that it did not have cell structure, of even the simplest kind. There was no membrane, no nucleus, and no ribosomes. They determined that a virus was nothing more than a strand of nucleic acid, DNA or RNA, protected by a protein shell. Scientists also believed that viruses lacked the mechanisms necessary for metabolic function.

Some scientists argued that viruses are capable of response to stimuli. When not in a favorable environment within a host cell, the virus remains an unchanging, dormant, organic particle. But once in contact with the susceptible host or in a favorable environment, the virus becomes active, injecting its nucleic acid into the host cell, and eventually self-replicating. In this manner, one virus is capable of producing many other viruses, identical to the original, to attack host cells.


You are debating whether or not viruses are alive. You are arguing for the negative, that is, viruses are not alive. First, list the characteristics of life. Then, use evidence from the passage to support your side of the debate.

Answers

Answer 1
Life is defined by 7 main characteristics, known by the acronym:
MRS GREN
M ovement
R espiration
S ensitivity (ability to sense)

G rowth
R eproduction
E xcretion
N utrition

So how many do viruses fulfil? Not 1, 2, 4, 6 or 7.
They can kind of react to their surroundings and they can reproduce but only 2/7 qualities probably doesn't qualify them to be 'living'.
Answer 2
It does not fit enough characteristics of life.
Growth, Homeostasis, Heredity, Response to the Stimuli,  Reproduction, Metabolism, and Cellular Organization. 


Related Questions

Alex is at a rock concert. when his ears send a signal to his brain that he has heard a sound, this process is most accurately called ________. but when he recognizes that the sound is his favorite song, this process is most accurately called ________.

Answers

Alex is at rock concert. ..................................................... is most accurately called SENSATION. But ................................................. is most accurately called PERCEPTION.
Sensation occurs when light waves enter the sense organs and get converted to electrical impulses. The sense organs involve in this case are the senses of touch, sight, smell, hearing and taste. Perception occurs when the brain send signals to the body which result in identification or recognition of the sensation.

Final answer:

Auditory stimulation refers to the initial reception of sound waves in the ear, converted to electrical signals sent to the brain, while auditory processing is the brain's interpretation of these sounds as familiar music, like a favorite song.

Explanation:

Alex is at a rock concert. When his ears send a signal to his brain that he has heard a sound, this process is most accurately called auditory stimulation. But when he recognizes that the sound is his favorite song, this process is most accurately called auditory processing.

Hearing is the physical process when the ear drums receive sound waves and convert them into electrical signals. These signals travel along the auditory nerve to the brain. This initial reception of sound is what we refer to as auditory stimulation. However, the auditory cortex has a far more complex role; it breaks down sounds into elements such as pitch and timbre, then compares them against stored memory associations and emotional responses. This higher-order processing and recognition of the sound as a specific song is known as auditory processing or hearing.

A 135-pound woman who is 38 years old needs how much protein?​
a. ​135 grams/day
b. ​49 grams/day
c. ​56 grams/day
d. ​110 grams/day
e. ​86 grams/day

Answers

The amount of protein a woman should get each day depends not just on age and weight. Her activity level must also be considered. A 135-pound woman who is 38 years old and assuming not pregnant needs  (b) 49 grams/day if she is not very active or (d) 110 grams/day if she is very active.

The correct answer is option (B) 49grams/day.The recommended daily protein intake for a 135-pound woman is approximately 49 grams per day, based on the standard equation for protein needs. This aligns with option b from the provided choices.

To determine the recommended protein intake for a 135-pound woman who is 38 years old, we can use the equation provided.

(Weight in lbs. : 2.2 lb/kg)0.8 g/kg

First, convert the woman's weight from pounds to kilograms:

135 lbs. × 2.2 lb/kg = 61.36 kg

Next, multiply the weight in kilograms by the recommended amount of protein per kilogram:

61.36 kg  imes 0.8 g/kg = 49.09 grams/day

Therefore, the average protein requirement for this woman would be approximately 49 grams per day, which aligns with option b. However, individual requirements may vary based on factors such as activity level, overall health, and specific dietary needs.

Name a type of cell that relies on coupled transport to perform its functions

Answers

Epithelial cells in the stomach require the use of coupled transport to make gastric acid. They use hydrogen potassium ATPase, which is an electroneutral pump, and exchanges potassium for hydronium in order to produce the gastric acid.

A client with chronic renal failure has a serum potassium level of 6.8 meq/l. what should the nurse assess first

Answers

Assess the cardiac rhythm 

What are the six diet-planning principles for developing a healthy eating pattern?

Answers

adequacy, balance, calorie control, moderation, variety, and nutrient density

adequacy, balance, calorie control, moderation, variety, and nutrient density

Some of the most primitive organisms found in the fossil record are

Answers

Some of the most primitive organisms in these fossils are extinct. These already extinct organisms provide leeway of research for scientists to uncover what organisms roamed and came before what exists now. Also this provides evidence for the theory of evolution and how the mechanism, principles and processes that underlie this phenomenon has took place. Fossils are great finds in biological and evolutionary research in that they are one of the prominent evidence of how life came to be and the significant divergences of how environment has an effect to organisms’ survival. 

What is the largest planet in our solar system?

Answers

the largest planet in our solar system is Jupiter

     Have a wonderful!! day!  ;)

The largest planet of our solar system would be Jupiter, the fifth planet from the sun, compared to the other nine which are at least twice as small in size compared to Jupiter.

The lower section of the pharynx that contains the esophagus and trachea is known as:

Answers

Hey You!

I Believe It Is Called: Oropharynx.
Heya friend!

Oropharynx (also known as throat) is the lower section of the pharynx that contains the esophagus and trachea.

Function of oropharynx-:

•The muscular walls of oropharynx helps in swallowing and a route for travelling of food from mouth or our stomach.


Hope it helps...!!!

When you use alcohol and other drugs to function this is called?

Answers

I think the answer would be addiction or dependency. 

Fat deposited around the internal organs is known as ________ fat.

Answers

This is considered visceral fat. This type of fat is more common in those who show the "beer belly" or "pot belly" characteristic. This type of fat can be more dangerous to a person's long-term well-being, and has been linked to several metabolic and vascular issues.

Answer:

Structure of cell membranes

Explanation:

Cells must pass through a critical checkpoint during which two stages of the cell cycle?

Answers

Gap 1 phase (G1) and Gap 2 phase (G2).

Cells must pass through a critical checkpoint during G1 and G2 stages of the cell cycle.

What are the characteristics of cell cycle?

A cell cycle is a series of events that takes place in a cell as it grows and divides. A cell spends most of its time in what is called interphase, and during this time it grows, replicates its chromosomes, and prepares for cell division.

The cell cycle is a four-stage process in which the cell increases in size (gap 1, or G1, stage), copies its DNA (synthesis, or S, stage), prepares to divide (gap 2, or G2, stage), and divides (mitosis, or M, stage).

The cell cycle consists of a series of steps during which the chromosomes and other cell material double to make two copies. The cell then divides into two daughter cells, each receiving one copy of the doubled material.

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You are a carbon dioxide molecule floating in the air that is about to enter the stomata of a leaf. Tell the story of your adventure through photosynthesis in the leaf, and then through cellular respiration after the plant is consumed by a rabbit.

Answers

A CO2 molecule found a friendly stomata on the bottom of a leaf. As the sun rose, the leaf's cells opened up to let the molecule in through the stoma. Soon, it was moving around inside with other CO2 and water molecules. Soon, the plant--powered by the sun--began re-assembling the molecule into new forms, adding and subtracting bits with other molecules, to make sweet glucose and release oxygen into the air. A curious rabbit couldn't resist a few nibbles of the sweet leaves with their glucose, and soon the CO2 molecule, in its new form as glucose, was inside the bunny's belly, being converted into energy.

What two processes must take place in order to go from a gene to a protein?

Answers

Most genes contain the information needed to make functional molecules called proteins. (A few genes produce other molecules that help the cell assemble proteins.) The journey from gene to protein is complex and tightly controlled within each cell. It consists of two major steps: transcription and translation. Together, transcription and translation are known as gene expression.

During the process of transcription, the information stored in a gene's DNA is transferred to a similar molecule called RNA (ribonucleic acid) in the cell nucleus. Both RNA and DNA are made up of a chain of nucleotide bases, but they have slightly different chemical properties. The type of RNA that contains the information for making a protein is called messenger RNA (mRNA) because it carries the information, or message, from the DNA out of the nucleus into the cytoplasm.

Translation, the second step in getting from a gene to a protein, takes place in the cytoplasm. The mRNA interacts with a specialized complex called a ribosome, which "reads" the sequence of mRNA bases. Each sequence of three bases, called a codon, usually codes for one particular amino acid. (Amino acids are the building blocks of proteins.) A type of RNA called transfer RNA (tRNA) assembles the protein, one amino acid at a time. Protein assembly continues until the ribosome encounters a “stop” codon (a sequence of three bases that does not code for an amino acid).

The flow of information from DNA to RNA to proteins is one of the fundamental principles of molecular biology. It is so important that it is sometimes called the “central dogma.”

Through the processes of transcription and translation, information from genes is used to make proteins.

What are two ways in which exocytosis might help a cell maintain homeostasis?

Answers

Endocytosis enables extensive particles to enter the cell, and exocytosis ousts vast atoms from the cell. Along these lines, the cell can acquire things it needs and disposes of things it doesn't. Exocytosis is the turn around process, where a cell ousts substantial particles, generally squander from cell forms.

The most important factor that causes ocean tides on earth is the __________.

Answers

the moon. The moon's gravitational pull controls currents and tides.

A recessive trait is observed when an organism has how many recessive genetic factors

Answers

A recessive trait is observed when an organism has 2 recessive genetic factors.

Which taxonomic group includes kingdoms and all other levels of taxonomy

Answers

what are the answer cheseis

Name two ways that veins and arteries are different.

Answers

The chief difference between arteries and veins is the job that they do. Arteries carry oxygenated blood away from the heart to the body, and veins carry oxygen-poor blood back from the body to the heart. 

Another difference would be veins have valves and arteries do not. In arteries, blood flows in the right direction because of the heart pumping it forwards at high pressures. The lower blood pressure in veins means that valves are needed to stop blood flowing backwards (for example, in veins in the legs, blood needs to flow upwards against the pull of gravity).

Arteries have thicker, more elastic walls for high-pressure blood flow, while veins have thinner walls with valves to prevent backflow and assist with blood return to the heart.

Two ways veins and arteries differ:
1) Thickness and elasticity: Arteries have thicker and heavier walls and are highly elastic, while veins have thinner walls and are less elastic.
2) Valves: Many veins have valves to prevent backflow, while arteries do not contain valves.

Arteries and veins are different in several ways, but two notable differences are their structure and function. Arteries have thicker walls with more elastic tissue to withstand the higher pressure of blood being pumped directly from the heart. In contrast, veins have thinner walls and, particularly in larger veins, are equipped with valves to prevent the backflow of blood and aid its return to the heart. Despite both having three distinct layers in their walls, their elasticity and the presence of valves are prime distinguishing features.

The word part that completes the medical term meaning inflammation of the liver, ________/itis, is:

Answers

hepa/o ; or hepato/a .
__________________
The full word is:  "hepatitis" .
____________________________

Although not yet aware of her pregnancy mrs. upton has conceived a single cell from the union of an egg cell and a sperm cell. this single cell is called a(n):

Answers

It's call a zygote cell. 

zygote cell. there you go

Name the renal process that occurs at the renal corpuscle.

Answers

Answer: Filtration

Blood that is going to be filtered enters the first part of the nephron, the glomerulus, which is a tuft of capillary vessels. The glomerulus is inside a "sac" called a glomerular capsule.Together, the glomerulus and the glomerular capsule form the renal corpuscle, which is the filtering unit.

The renal process that occurs at the renal corpuscle is called filtration.

Filtration Process:

Blood enters the glomerulus through afferent arterioles: The glomerulus acts like a sieve, filtering blood to remove waste products and extra substances while retaining cells and large proteins.

Filtrate is formed: As blood passes through the glomerulus, about 10-20 percent of the plasma is filtered out. This filtrate consists of water, glucose, amino acids, some ions, and waste products.

Filtrate is captured by Bowman's Capsule: The filtrate passes through the filtration membrane formed by the podocytes (specialized cells with finger-like projections) and the thin walls of the capillaries.

Filtered blood exits: The filtered blood then leaves the glomerulus through the efferent arterioles, having been cleaned of unnecessary substances.

Filtrate moves to the proximal convoluted tubule (PCT): The captured filtrate is then funneled from Bowman's Capsule into the PCT for further processing and reabsorption.

The primary function of the renal corpuscle's filtration process is to remove waste products and excess substances from the blood while retaining essential molecules, maintaining overall body homeostasis.

A defective protein can be produced by a cell when a mutation has which of the following?

Answers

What are the following answers?
Final answer:

A defective protein can be produced by a cell when a mutation has occurred in either the DNA or the mRNA. If a mutation occurs in the DNA, it can lead to the production of defective proteins or no protein production at all. If a mutation occurs in the mRNA, it will only affect proteins made from that specific mRNA strand, and the production of defective protein will cease when the mRNA strand deteriorates.

Explanation:

A defective protein can be produced by a cell when a mutation has occurred in either the DNA or the mRNA. If a mutation occurs in the DNA, it can lead to the production of defective proteins or no protein production at all. On the other hand, if a mutation occurs in the mRNA, it will only affect proteins made from that specific mRNA strand, and the production of defective protein will cease when the mRNA strand deteriorates.

It's important to note that the impact of mutations can vary. Some mutations may have no effect, while others can lead to significant changes in the structure and function of proteins. The specific consequences depend on the nature of the mutation, its location in the gene, and the role of the affected protein in cellular processes. Mutations play a crucial role in the diversity of life but can also contribute to genetic disorders and diseases.

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The ingredient that makes up the largest share of a food comes last in the ingredients list on the food label]

Answers

False, if that is what you are asking. It is the other way around. Largest quantity comes first.

Hope this helps.

Your heart may race when you are confronted by a lion but not when you are approached by a kitten. this best illustrates the adaptive value of

Answers

The answer to this question would be: discrimination

Discrimination has its own adaptive value that was beneficial to the survival. By being discriminative to the predator, someone can perceive danger faster thus can react more quickly. Other than a lion, this discrimination can be triggered in snakes, spider, or other dangerous animals.

write a short paragraph about the five levels of organization

Answers

the scientific study of the different levels of organization of living beings help us gain an insight into the complexities of their structure in functioning

The preferred ultrasound examination to evaluate vascular occlusions and blood flow dynamics is

Answers

The preferred ultrasound examination to evaluate vascular occlusions and blood flow dynamics is color flow doppler scanning.
Final answer:

The preferred ultrasound examination for vascular occlusions and blood flow dynamics is ultrasonography, which uses high-frequency sound waves to generate real-time images. It is noninvasive and commonly used to study heart function, blood flow, and fetal development.

Explanation:

The preferred ultrasound examination to evaluate vascular occlusions and blood flow dynamics is ultrasonography. Ultrasonography uses the transmission of high-frequency sound waves into the body to generate an echo signal that produces a real-time image of anatomy and physiology.

It is noninvasive and commonly used to study heart function, blood flow in the neck or extremities, and fetal growth and development.

With Doppler-shifted ultrasonic imaging, color is used to indicate velocity. The highest velocities are indicated in red, while the lowest are blue. The blood must move faster through constrictions to carry the same flow, and this is effectively illustrated on the Doppler ultrasonography image.

It's worth noting, however, that the image quality can be heavily operator-dependent and ultrasonography can't penetrate bone and gas.

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________ are pyroclastic materials that are larger than ash but smaller than blocks or bombs

Answers

"Lapilli are pyroclastic materials that are larger than ash but smaller than blocks or bombs."

Lapilli is pyroclastic material that has a dimention of 2 to 64 mm. Lapilli are of really low density what gives them the ability to be projected and taken far in a volcanic explosion. They start by being molten/semi-molten lava that solidifies as travelling through the air or reaching the water.

Explain why highly active cells have large numbers of mitochondria

Answers

They have to break down a lot of glucose fast

It is found that the highly active cells have large number of mitochondria because they require large amount of energy which is produced through cellular respiration by the mitochondria of cell.

What is Cellular respiration?

Cellular respiration is the process through which organisms use the atmospheric oxygen to break down food molecules to produce chemical energy for the cellular activities and various functions. Cellular respiration takes place in all the different organisms such as animals, plants, and fungi, and also in algae and other protists.

The highly active cells perform cellular respiration at a faster rate than other cells. These cells perform different functions and to meet the energy demand of the highly active cells, they contain large number of mitochondria.

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Explain what differential reproductive success includes.

Answers

it includes a healthy offspring with no mutations or other problems

Answer: differential reproductive success includes healthy offspring with no mutations or other problems.

Explanation: Differential reproductive success refers to the ability to reproduce offspring and the percentage of young that will survive and reproduce. The difference in reproductive success can vary due to health, availability of resources, and the presence or absence of certain traits. These traits can influence the individual's ability to attract or acquire a mate.

Hope this helps!!

If a pea plant has a genotype SSTt, what are the possible genetic combinations that could be present in a single grain of pollen produced by the plant? (2 points)

SS, Tt, ST
ST, St, st
SS, Tt, ST, St
ST, St

Answers

I think it D ST st I hope this helps and it not to late

Answer:

ST, St.

Explanation:

As per the question, each cell of the pea plant is diploid and contain genotype SSTt. Thus each microspore mother cell in the anther is also had genotype SSTt.  As a result of meiosis in the microspore mother cell, four haploid microspores or pollen grains are formed in the pea plant. As per Mendel’s law of segregation or purity of gametes, genotypically two types of pollen will form. Half of the pollen will have ST genotype and half of the pollen will have St genotype. Therefore, option D is correct.

Other Questions
Evaluate each expression. Click on undefined as needed What agency is in charge of ellis island today? Read this excerpt from "A Modest Proposal" by Jonathan Swift:Infant's flesh will be in season throughout the year, but more plentiful in March, and a little before and after; for we are told by a grave author, an eminent French physician, that fish being a prolifick dyet, there are more children born in Roman Catholick countries about nine months after Lent, the markets will be more glutted than usual, because the number of Popish infants, is at least three to one in this kingdom, and therefore it will have one other collateral advantage, by lessening the number of Papists among us.I have already computed the charge of nursing a beggar's child (in which list I reckon all cottagers, labourers, and four-fifths of the farmers) to be about two shillings per annum, rags included; and I believe no gentleman would repine to give ten shillings for the carcass of a good fat child, which, as I have said, will make four dishes of excellent nutritive meat, when he hath only some particular friend, or his own family to dine with him. Thus the squire will learn to be a good landlord, and grow popular among his tenants, the mother will have eight shillings neat profit, and be fit for work till she produces another child.Those who are more thrifty (as I must confess the times require) may flea the carcass; the skin of which, artificially dressed, will make admirable gloves for ladies, and summer boots for fine gentlemen.In which point of view is this excerpt written? On a shopping trip, Peter spent 1/3 of his money for a jacket and another $5 for a hat. If peter still had 1/2 of his money left, how much money did he have originally ?? plants utilize chlorophyll containing chloroplasts and mitochondria. what is the purpose of motochodria when a cell already has chloroplasts? What country is an enclave of (i.e., completely surrounded by) south africa? The cardiac and vasomotor center are located in the Which term describes the simplest method of performing chant? A.Direct B.Strophic C.Antiphonal D.Responsorial The classical symphony had its roots in the: It could not be worse, Passini said respectfully. There is nothing worse than war. Defeat is worse. I do not believe it, Passini said still respectfully. What is defeat? You go home. They come after you. They take your home. They take your sisters.The use of informal diction in A Farewell to Armsrobs the passage of having a deeper meaning.helps to maintain the realism of the dialogue.lends an air of absurdity to the dialogue.reduces the readability of the passage. Which equation would represent this problem?Five added to 3 times a number is equal to 8 less than 5 times the number The primary purpose of state and local government is to provide services to ______.a. the federal governmentb. their populationc. other statesd. students If you are adding two fractions that are both less than 1/2, What must be true about the sum? Give three examples to support your thinking. If p||q, solve for x. The sides of a triangle measure 76 mm, 8 CM, and 10 CM..What is the lengths of the two shorter sides Which is a correct definition for an obtuse angle? A. an angle with a measure that equals the measure of a square corner B. an angle with a measure that is less than the measure of a square corner C. an angle with a measure that is greater than the measure of a square corner D. an angle that looks like a line Every computer contains a(n) ____ to send and receive data from other computers over a network. Adrianna will be a college freshman soon and she is struggling to make a career choice. Which activities will help her? according to the rational root theorem, which is a factor of the polynomial f(x) = 3x^3 - 5x^2 - 12x + 20? 5 less than a third of a number is at most 15 Steam Workshop Downloader