Most biology textbooks prior to 1990 listed the major function of ribonucleic acid (RNA) as transferring information from DNA to make proteins. In late 1989, Thomas Cech proposed that RNA had a second major function: as a catalyst for chemical reactions that occur inside the cell. His discovery surprised most scientists and caused the rewriting of many chapters in biology textbooks. What aspect of the scientific process does this best illustrate?

Answers

Answer 1

Answer:

The correct answer would be - overgeneralization of a hypothesis.

Explanation:

In this case, the scientist uses to think and listed the transferring information from DNA to make proteins as the main and major function of the RNA until Thomas Cech proposed that it is the second most important catalyst that takes place in the cell and catalyzes cell's chemical reactions.

This illustrates major aspects of the scientific process: overgeneralization of a hypothesis as RNA is not just a molecule that assists and transfers the information but new evidence found it has catalytic activity also.


Related Questions

About 3% of Earth’s water is fresh water. About 1% of this amount is usable fresh water.

Which statement describes the distribution of usable fresh water on Earth?

Most of the usable fresh water is in lakes.

Most of the usable fresh water is in rivers.

Most of the usable fresh water is in the wetlands.

Most of the usable fresh water is in the atmosphere.

Answers

I believe it’s the second one sorry if am wrong

Answer:

most of the usual fresh water is in lakes

Explanation: just did the assignment

Which of the following
organelles holds a lot of water to keep its rigidity?
A nucleus
B, cell membrane
C, cytoplasm
D, Vacuoles






h e l p

Answers

the answer is D, Vaculoes

How much more efficient is organic farming.
50%
25%
75%
65%

Answers

Answer:

65% is correct

Explantion:

Took a quiz and its correct answer

Answer:

65

Explanation:

The body temperatures of ectotherms, like lizards and turtles, can fluctuate with the environment. How do ectotherms maintain homeostasis?

Answers

Endotherms, such as birds and mammals, use metabolic heat to maintain a stable internal temperature, often one different from the environment. Ectotherms, like lizards and snakes, do not use metabolic heat to maintain their body temperature but take on the temperature of the environment.

When one tectonic plate is forced underneath another plate is broken down in earths mantle

Answers

Answer:

gfkgahl zehjwv kncRkkns

Because of base pairing in DNA, the percentage of


Answers

Answer:Answer: Since certain bases always appear in pairs, they will have equal percentages of the DNA composition. The percentage of adenine will equal the percentage of thymine, and the percentage of cytosine will equal the percentage of guanine. Together, these percentages will add to 100%

Explanation:

Answer:

huh

Explanation:

I can't give the answer big the sentence dint make since I'm sorry

plz plz plz help The driving force behind the movement of the tectonic plates is..
Group of answer choices

seismic events

drifting due to different densities

movement of the asthenosphere

the Earth's rotation and centrifugal forces

Answers

Answer:

Movement of the Asthenosphere

Explanation:

The Asthenosphere is the upper layer of the earth's mantle, below the lithosphere, in which there is relatively low resistance to plastic flow and convection is thought to occur. This convention causes warmer magma in the earth's core to rise and cooler to fall and be heated again. The circular motion caused by this convection is what is thought to cause the Earth's crust to move.

The _________ are one of 3 Thigh muscles that connect the hip and Knee.
Hip flexors

Quadriceps

Bicep Femoris

Hamstrings

Answers

the answer is hamstrings!! hope this helped. have a nice day:)
The answer is hamstrings! Hoped this helps C:

10. An automobile headlight has a resistance of 40 ohms when attached to a standard 12 volt battery. How much current flows through the headlight?

Answers

Answer:

Current flows I = 0.3 Ampere

Explanation:

Given:

Resistance = 40 ohms

Voltage = 12 volt

Find:

Current flows

Computation:

I = V / R

Current flows I = 12 / 40

Current flows I = 0.3 Ampere

What is the relationship between the light-dependent and light-independent reactions of photosynthesis?

Answers

Answer:

In the light-dependent reactions, energy from sunlight is absorbed by chlorophyll and that energy is converted into stored chemical energy. In the light-independent reactions, the chemical energy harvested during the light-dependent reactions drives the assembly of sugar molecules from carbon dioxide.

In purple people eaters , 2 horns are dominant and no horns is recessive . If a purple people eater is a heterozygote then it has 1 horn . Two heterozygote purple people eaters are about to have a baby . What are the genotypes and phenotypes that their baby could possess ? Show the punnet square

Answers

Answer:

Punnet squares are in the image attached

an energy-producing organelle found in nearly all cells of plants and animals.

Answers

Answer:

Mitochondria

Explanation:

Mitochondria is and energy kinda like a battery and cells have thousands of mitochondria. Hope this helps :)

When is gravity the strongest? (Select all that apply)
Group of answer choices

When the mass of the object is larger

When closer to the object

When the mass of the object is smaller

When farther away from the obje

Answers

Answer:When closer to the object

Explanation:

Answer:

When closer to the object

Explanation:

Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is.

Which level of organization involves an organism’s use of the mouth, saliva, teeth, stomach, intestines, liver, and pancreas to break down food?
A. Cell.

B. Tissue.

C. Organ.

D. Organ system.

Answers

Organ system? Because that’s where all your digestive system works at

The level of organization involves an organism’s use of the mouth, saliva, teeth, stomach, intestines, liver, and pancreas to break down food in the organ system. The correct option is D.

What is the organ system?

An organ system is a collection of organs that cooperate to carry out a certain task in the body of an organism. Organs, which are self-contained collections of tissues like the heart that cooperate to carry out a single function, are present in the majority of animals and plants.

The human body is composed of 11 primary organ systems. These include the reproductive, integumentary, skeletal, muscular, nervous, endocrine, circulatory, lymphatic, respiratory, digestive, and urinary systems.

Organ systems are collections of organs that cooperate to carry out a task for the body they are a part of. They can aid in gas exchange, waste removal, nutrient acquisition and transportation, illness sensing, and disease protection for the body.

Therefore, the correct option is the D. Organ system.

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Which of the following factors of a gene determines the protein, and therefore the trait, it expresses in a cell?

A. Its length and sequence of nitrogen bases.

B. Where the cell is found in the organism.

C. The position inside of the nucleus.

D. Its shape and color after cell reproduction.

Answers

Answer is c if not c u would say a

Its length and sequence of nitrogen bases. Therefore, option (B) is correct.

What are nitrogenous bases?

Nitrogenous bases are the building blocks of DNA and RNA, which are the genetic material of living organisms. They include adenine, guanine, cytosine, and thymine (or uracil in RNA), and their sequence in DNA determines the genetic code that directs the synthesis of proteins.

The length and sequence of nitrogen bases (adenine, guanine, cytosine, and thymine) in a gene determine the specific sequence of amino acids that make up a protein, and therefore the trait it expresses in a cell. This is known as the genetic code, which is a set of rules that determines how the sequence of DNA bases is translated into the sequence of amino acids in a protein.

The other factors listed (where the cell is found in the organism, the position inside of the nucleus, and its shape and color after cell reproduction) do not directly determine the protein or trait expressed by a gene.

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The earth’s surface stays completely the same over time. It never changes

A)true
B)false

Answers

False!! all of earth’s components, including it’s surface, are always always changing

pls help i need to pass this!
Which of these structure types is composed of alternating layers of lava and cinders?

cinder cone
stratovolcano
shield volcano
none of these

The VEI of a volcano’s eruption is based on

the amount of tephra produced.
the height of the eruption cloud.
a descriptive estimate of the explosion.
all of these.

Answers

Answer:

1. Cinder cones

2. All of these

Explanation:

1. Cinder cones develop from explosive eruptions of mafic (heavy, dark ferromagnesian) and intermediate lavas and are often found along the flanks of shield volcanoes. The outside of the cone is often inclined at about 30°, the angle of repose (the slope at which the loose cinder can stand in equilibrium).

2. Volcanic Explosivity Index (VEI) is a numeric scale that measures the relative explosivity of historic eruptions. Volume of products, eruption cloud height, and qualitative observations (using terms ranging from "gentle" to "mega-colossal") are used to determine the explosivity value. The Volcanic Explosivity Index (VEI) was derived to catalogue the explosive magnitude of historical eruptions, based on the order of magnitude of erupted mass, and gives a general indication as to the height the eruptive column reached.

Hope this helps!

what is a sifaka and how are they an endangered species

Answers

Answer:

A sifaka is a lemur of the genus Propithecus from the family Indriidae within the order Primates.Habitat loss and poaching are probably the major factors that contribute to this species decline.

Explanation:

Hope this helped Mark BRAINLEST!!!

Lemur of a genius propitiousecus

Which organelle is considered the control center of the cell or the "brain" of the cell? It contains all the DNA or the instructions to carry out the function of the cell??

Answers

Answer:

The nucleus

Explanation:

The nucleus of eukaryotic cells is the "control center". It contains DNA which tells the cell how to function.

Please mark Brainliest!  


Based on the reading, what is the characteristic that differentiates the bullfrog?

Answers

Answer:

it has a bulls fan in it so it is powerful

When wax is heated, it turns into a liquid. How are the wax molecules affected by this change of state?

Answers

answer:

the molecules gain more energy and the space between the molecules increases

explanation:

when wax is heated, the molecules of wax gains kinetic energy and move about randomly until the inter molecular forces binding them together is broken and the wax turn into liquidIn the liquid state, the molecules have more free movement, so they spread out and the distances between them increasecredits: https://brainly.com/question/2755409

At the end of the mitotic cell cycle, a cell divides into two cells. What must happen before the cell divides? A. The number of organelles doubles. B. Chromosomes must be copied. C. Four nuclei must be formed. D. The membrane thickens.

Answers

Answer: The correct option is B.

B. Chromosomes must be copied

Explanation:

This is because, before mitosis occurs the cells must first duplicate or replicate it's DNA during interphase and this is because mitosis is a type of cell division where a parent cell divide into two daughter cells which are genetically identical to the parent cell and carry the exact number of chromosomes of the parent cell.

Answer:b

Explanation:

What are three ways used to describe organisms such as humans

Answers

Answer:

heterotrophs, tertiary consumers and top carnivoresExplanation:i toke the test

Juanita fills the tank with water so that it is 1 foot deep. What is the volume of the water?

Answers

We need to know the dimensions of the tank

Which event is most likely to happen if the mouse population is wiped out?
O A. The snake population will decrease.
OB. The owl population will increase.
C. The plant population will decrease.
OD. The fox population will increase.
Sorry I need help again I got like 2 more question sosoisksksks

Answers

The snake population will decrease. If all of the mice in an area die out, some snakes — which feed primarily on mice and other small animals — will starve unless they are able to find another food source.

Please mark Brainliest if this helped you! :)

Answer:

A. The snake population will decrease

Explanation:

Because the snakes wont have much food to eat

Case Study no. 1
A 35 year old woman complains of muscle weakness, anxiety and depression.
Questions:
1. Which disorder account for the symptoms?​

Answers

Answer:

the disorder that muscles weaken, axiety and depression is hypothyrodism.

Explanation:

Many rain forest plants are prone to developing fungal infections on their leaves. Fungi can grow rapidly in moist environments, and a serious infection can kill plants

Answers

Answer:

Resistance plants increase in number whereas non-resistant plants decreases.

Explanation:

The environment of rain forest is suitable for the fungal growth because of the presence of humidity in the environment and we know that fungi needs moist places for its growth. These fungus attached on the leaves and takes nutrients from that plant that leads to the stunted growth and many cases death of the plant occurs. Some plants have no effect of this fungus due to the presence of resistance in them so if the fungus spreads in the whole forest so the plants which are prone to these fungal infections eliminated from that environment and resistant plants are increase in number.

Answer:

Part B

Many rain forest plants are prone to developing fungal infections on their leaves. Fungi can grow rapidly in moist environments, and a serious infection can kill plants. One rain forest plant species has a genetic variation that affects its leaf structure. The traits and the descriptions of the plant’s leaves are listed in the chart.

Explanation:

El medio ambiente sufre un constante deterioro por el mal uso que hacemos los seres humanos de los recursos naturales, ¿de qué manera podría intervenir en este tema la BIOTECNOLOGÍA para optimizar esos recursos especialmente desde prácticas empresariales?

Answers

Answer:

Nuevas industrias que cuentan con procesos limpios y eficientes.

Explicación:

La biotecnología interviene en la optimización de los recursos naturales mediante la instalación de nuevas industrias que tienen procesos de fabricación más limpios y se utilizan métodos más eficientes al reducir la contaminación química tóxica y las emisiones de gases de efecto invernadero. Debido a estas industrias, se producen pocos daños a nuestro medio ambiente y los productos también se producen para satisfacer nuestras necesidades y requisitos. La biotecnología también reduce las emisiones de CO2 del proceso agrícola y la concentración de pesticidas que se utiliza para producir alimentos.

A biologist wants to measure the effect of gene flow between populations. Which of the following investigations will allow her to accomplish this goal?
A)An investigation that determines a change in allelic frequency of a wolf population by theimmigration of a wolf from another population.
B)An investigation that determines the amount of time it takes for genes from a bee to transfer to the flower it fertilizes.
C)An investigation that determines the causes of mutations in genes that one species of guinea pig transfer to another species of guinea pig.
D)An investigation that determines the rate at which an antibiotic prevents a virus from transferring genes to a cat.

Answers

Answer:

B

Explanation:

Cause I say so

The investigation that will allow a biologist to measure the effect of gene flow between populations is that a change in allelic frequency of a wolf population by the immigration of a wolf from another population. Thus, the correct option for this question is A.

What is Population?

A population may be defined as a group of individuals belonging to the same species living in the same area at a given time. The size, density, abundance, birth rate, death rate, dispersal, etc. are categorized as the characteristics of a population. These characteristics are known as demographic factors.

According to the context of this question, the process of gene flow can be determined by collating allele frequencies of populations. With this mechanism, if the two populations have increased variation in their gene pool, it expresses a lesser amount of gene flow because gene flow increases homogeneity among different populations.

Therefore, the correct option for this question is A.

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The modern synthesis combined the concepts of _______ and evolution. If a population is at Hardy-Weinberg equilibrium, the allele frequencies must be _______.

Answers

Answer:

The correct answer would be - genetics, constant.

Explanation:

The modern synthesis is a unified evolution theory that came forward by the fusion of Mendelian genetics with Darwinian evolution. It is focused on the genetic basis of evolution as it defines evolution as changes in the allele frequency in the population.

If a population is at Hardy-Weinberg equilibrium, the allele frequencies remain the same in the population unless there is no change is applied to it. It will remain constant only if there is no mutation, infinite population size, no gene flow, random mating, and no selection.

Answer:

1. natural selection

2. constant from generation to generation in the absence of other evolutionary influences.

Explanation:

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Give an example of an electrolyte the point-slope for mhm of a line that has a slope of -2 and passes through point (5,-2) is shown below y+2=-2(x-5)A. y=-2x+12B. y=-2x+8C. y=-2x-7D. y=-2x-3 A hostel has food for 600students for 50 days. After 15 days, if 180 students leavethe hostel, how long will the food last? Okay brain block alert what is 3 1/3 divided by 4 3/4 Consider the following scenario: A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations. What is the main selective pressure in this scenario?leg lengthinsect populationdroughtfish population the arab israeli conflict main source of tension stems from:A) The difference in religious beliefsB) The Natural Resources in the regionC)The enviromental protection laws acted in IsraelD)The use of animism in religious practices A scale drawing has a scale of 2 cm = 15 m. If the length of something on the drawing is 12 cm, what is the actual length? If the ratio of radii of two spheres is 4:7, find the ratio of their volumes. Ello comrade I need help to say Ben 10 in German PLEASE HELP, URGENT!!!John bought a crate of floor tiles $100. The crate had 5 boxes of floor tiles. Each box contained 40 floor tiles. Write anequation to determine the cost per box, b. Aspirin synthesis involves the addition of an acetyl group to salicylic acid in a condensation reaction with an alcohol. The acetyl group could be added with a carboxylic acid but the preferred procedure is to use the acid anhydride. Why is preferable to use an acid anhydride for ester formation with an alcohol rather than a carboxylic acid 4. Explain how the United States achieved Manifest Destiny. Help meeeee hurryyyy write an expression equivalent to `b+b+b+b+b` that is a product of a coefficient and a variable. Discuss TWO ways in which some cultural views that exist may affecta relationship negatively.(2 x 2 = help me plz: An employer is paying an employee a salary of $35,500 a year. The employer promised to increase his/her salary by 2,750 per year. What will be the employee's salary by year 8? why does the acute triangle go under polygon Plz help true or false Michelle baby-sits the neighbors' children. She watches the Rogers' child for $5 per hourand the Pringles' two children for $6.50 per hour. The Rogers needed her to work15 hours this week, while the Pringles needed her services for 25 hours. Mitosis and meiosis are similar processes. Which BEST describes what can only occur after meiosis?A.Parent cells can be either haploid or diploid.B.Products of cell division result in identical genotypes.C.Four daughter cells are produced by a single parent cell.D.The number of chromosomes per nucleus remains the same after division.