DNA polymerase is the enzyme that builds a new strand of DNA by adding nucleotides, essentially replicating the DNA for cell division.
Explanation:The enzyme that builds the new strand by adding nucleotides is called DNA polymerase. DNA polymerase synthesizes the new DNA strands from the deoxyribonucleotide triphosphates, which are the building blocks of the DNA molecule. It works by 'reading' the template DNA strand and adding complimentary nucleotides to the growing DNA chain. Essentially, it assembles the DNA strand in a 5' to 3' direction, and in doing so, it helps to replicate the DNA within a cell so that it can be properly divided during cell division.
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Most bryophytes, such as mosses, differ from all other plants in that they _____. see concept 29.3 (page 626)
compares and contrasts the structure and function of viruses with all living cells.,
Two species of beetles are both herbivores on the same host plant, and the presence of either beetle species reduces the population growth of the other. the relationship between these beetles is best described as
List and describe the role of the 3 types of rna.
There are three RNAs with a role in the synthesis of protein.
mRNA, or messenger RNA, is the link between a gene and a protein. The main role of this ribonucleic acid is in transcription (”reading“) of DNA. The DNA is transcribed by RNA polymerase, and the resulting product of this process is mRNA. This form of RNA can be modified post-transcriptionally with methylguanosine caps and polyadenosine tails. RNA carries the genetic information which is copied from DNA and the information has a form of three-base code (“words”), codons. Each of these codons specifies a particular amino acid.
tRNA or transfer RNA is the molecule with the main function in translation by "decoding" the mRNA message during this process. Each type of amino acid has its own type of tRNA and also has a three-base sequence (anticodon) that can bind complementary with the codons in the mRNA.
rRNA or ribosomal RNA is a main component of ribosomes. rRNA associates with a set of proteins to form ribosomes which catalyze the assembly of amino acids into polypeptide chains (protein).
There are also a few more types of RNA which have a regulatory function like, microRNA or siRNA.
Organelles have their own genomes. when chloroplast dna is sequenced and compared to genomes from members of the cyanobacteria, the sequence is nested within cyanobacteria. this is strong evidence for the hypothesis that:
Model 1 defines the code scientists have discovered that relates the nucleotide sequence of mrna to the amino acid sequence of polypeptides.
a. what do the letters u, c, a, and g in model 1 represent
what does dna look like to the naked eye
The DNA has a shape of double helix which is microscopic and is thus invisible to the bare eye.
DNA is a hereditary material which is present in human beings as well as all other living organisms. Every cell which is present in an organism's body has DNA which is the same. Most of the DNA is situated in the cell's nucleus and small amount of it can be found in the cell's mitochondria as well.
Information which is stored in DNA is stored as codes made up of four chemical bases namely, adenine, thymine , cytosine and guanine.Human DNA consists of 3 billion bases .The order of the bases determines information which is required for building and maintaining an organism.It is microscopic and is thus invisible to the bare eye.
Thus, the DNA is invisible to the bare eye.
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using the gas pedal analogy explain the impact on the cell cycle of a proto-oncogene versus an oncogene
Using the gas pedal analogy, the proto-oncogene would be an accelerator since they promote cell division and deregulate apoptosis, while tumor suppressor would be the brakes since they constrain the progress of the cell cycle and induce cell apoptosis. An oncogene is, therefore, when the accelerator is stuck in down position and the brakes are not working.
Using the gas-pedal analogy oncogene, when the accelerator is stuck in down position and the brakes are not working.
Proto-oncogene:
promote cell division and deregulate apoptosis. Considered as an acceleratorTumor suppressor genes:
Stop the progress of the cell cycle and induce cell apoptosis.Considered as brakes.Hence, we can say that oncogene, when the accelerator is stuck in down position and the brakes are not working.
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15. The___hypothesis suggests that our solar system evolved from a huge rotating cloud of dust and gas.
16. Lines of____are used to measure distances east or west of the prime meridian in degrees.
17. The major difference between a topographic map and other maps is that a topographic map shows ___,
1. The right answer is The nebular hypothesis.
Scientists agree that our solar system results from the contraction, under the effect of its own mass, of a cold and dense interstellar molecular cloud made of gas, hydrogen, and helium essentially, and grains dust covered with ice water. Very quickly, a disc of matter would have formed, turning on itself, slowly on the periphery, quickly in the center. There, at the heart of the disc, the matter being more and more compressed by the movement and the increasing temperature, nuclear fusion reactions would eventually have started. This heart would have started to shine by releasing a phenomenal energy, giving birth to our star, the Sun, 4.56 billion years ago. The rest of the cloud would have continued to gravitate around this very young star, the most volatile compounds being rejected at the periphery under the effect of the very high temperature.
In this primordial nebula, the dust would have progressively agglomerated, forming grains that would have gathered together step by step in boulders, which by aggregating would have gradually given birth to the 9 planets of the solar system, their satellites, and meteorites.
2. The right answer is lines of longitude.
Longitude is a geographical coordinate represented by an angular value, an expression of the east-west position of a point on Earth (or on another sphere). The reference longitude on Earth is the Greenwich meridian.
3. The right answer is topographic map shows elevation.
A topographic map is a reduced-scale map representing the relief determined by altimetry and the human features of a geographical area in a precise and detailed manner on a horizontal plane.
Please help! I'll give you a medal! Sorry it might be a lot!
What color do you want your insects to be? ______________________________________
A. How would you describe the process of artificial selection? ____________________
___________________________________________________________________
___________________________________________________________________
B. How will mutations be useful in achieving your goal color? _____________________
___________________________________________________________________
______________________________________________,
why does the warm air rise up and over the cold air at a cold front
Which of the following is not a way in which human events can change the Earth’s surface? a. draining wetlands b. agriculture c. glacial melting d. pesticide use Please select the best answer from the choices provided
If a hormone-secreting cell is affected by the hormone that it synthesizes, the hormone is said to act in a(n) _______ fashion.
Why does DNA need to be copied into mRNA?
mRNA will serve as reference book that contains information as the DNA and its sequence is complementary to the DNA template.
The transfer of information in a DNA strand to a new molecule of messenger RNA is known as transcription. Thus, the process of transcription is carried out by an enzyme called RNA polymerase and a number of accessory proteins called transcription factors. However, DNA is copied into mRNA because mRNA will serve as reference book that contains information as the DNA and its sequence is complementary to the DNA template.
Antibodies to common microorganisms have been developed by
a. infancy
b. adolescence
c. childhood
can someone help me find the answer and understand.
How do the respiratory and circulatory systems work together?
Answer:
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A peculiar sensory sensation often preceding the onset of a seizure is called:
5. Why are the cells produced by meiosis considered gamete
6. Explain how the number of chromosomes per cell is cut in half during meiosis in which the diploid parent cell produces haploid daughter cells.
7. At what phase of meiosis is the number of chromosomes per cell doubled? (Think carefully about this.) What happens after that so that the number of chromosomes per cell does not end up being higher?
8. How many times does the cell divide during meiosis?
9. Why are the cells produced by meiosis considered gametes?
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Where do each tiles go for every defintion
In which biome would you most likely find plants that grow far apart from one another, with narrow leaves and shallow roots? Why do these plants have these adaptations?
A plant with narrow leaves and shallow roots would probably be found in the desert, where there is not a lot of water. Narrow leaves help prevent water loss. Shallow roots can spread out long distances in search of water. Plants living in the desert grow far apart from one another so that they don’t have to compete for limited amounts of water.
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Male peacocks have tail feathers that make up about 60% of their body length. during the mating season they contract muscles to shake these feathers in front of females; females evaluate the feather rustling as part of selecting their mate. the _____ is the mechanistic cause of this behavior; the _____ is the adaptive function of this behavior.
Dna methylation promotes what other chemical alteration of chromatin to suppress gene expression? histone deacetylation histone phosphorylation histone ubiquitylation dna phosphorylation dna ubiquitylation
Cells produce a variety of carbohydrates, including starch, glycogen and cellulose. The monomers of these large compounds are monosaccharides, such as the glucose molecule seen here. Cells assemble carbohydrates through dehydration synthesis, which means a(n) _____________ molecule is removed when the monomers are bonded together.
A) water
B) sugar
C) oxygen
D) carbon dioxide
When monosaccharides are joined to form disaccharides or carbohydrates, a water molecule is removed. This is called dehydration synthesis.
Cells assemble carbohydrates such as starch, glycogen, and cellulose through dehydration synthesis, in this reaction a molecule of water is removed when the monomers are bonded together. Thus, the correct option is A.
What is dehydration reaction?
Dehydration reaction or dehydration synthesis is the process in which the monomer units such as glucose molecules join together by forming glycosidic bonds to form the complex carbohydrates such as starch, glycogen, and cellulose.
The dehydration synthesis results into binding of the monomer units to synthesize a complex carbohydrate with the loss of a water molecule. Therefore, known as the dehydration synthesis. The synthesized carbohydrates can be reducing or non-reducing depending upon the proton and hydroxyl group present on the sugar.
Therefore, the correct option is A.
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Breaking a bone to repair it and put it into correct alignment is called osteoclasis.
a. True
b. False
In cells, the production of proteins is handled by the ribosomes and endoplasmic reticulum, while the processing and packaging of proteins is handled by the _________ body.a)golgib)nuclearc)plastidd)cytoplasmic
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1. what is soil erosion?
2. List two specific techniques/lessons the farmers since the dust bowl have learned about how to prevent the loss of topsoil
3. There are three natural agents of erosion. List to agents of erosion.
4. Day of the black blizzard
Describe in a short paragraph, one part of the story that you could picture in your mind, or that made a deep impression on you.
1. Soil erosion is the gradual deterioration of the topsoil through the impact of water and wind actions.
What are the effects of soil erosion?
The effects of soil erosion include:
Loss of fertile landDeclining fish and water speciesIncreased pollution and sedimentationClogging of waterways Degraded lands with worsened flooding.
2. The two specific techniques/lessons that farmers deployed since the dust bowl to prevent the loss of topsoil included:
Contour plowingStrip cropping.What are contour plowing and strip cropping?
Contour plowing is a farming technology that conserves the soil by following the natural contours during soil tilling, planting, and cultivation.
Strip cropping is a farming technique to mitigate soil erosion from wind and water activities wherever steep or long slopes exist.
3. The three natural agents of erosion are:
WaterWind wavesIce.4. When dry soil is piled up by the wind, building dunes, people had to shovel dust as they shoveled snows to make way for easy passage. In the Great Plains, dust clouds darkened the sky for many days unending. The "black blizzard," as it was christened, lasted from 1935 until 1939. Then, rainstorms returned to the plains. These periods bestowed uncertainty and drought.
What was the black blizzard?
The black blizzard happened between 1935 and 1939 when the Great Plains of Northern America witnessed great black dust storms. People covered their faces with wet cloths to breathe. According to history, despite this, many people had "dust pneumonia," with many children and the elderly dying from respiratory complications.
Thus, an example of soil erosion was the black blizzard of the 1930s in the Great Plains of Northern America.
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A condition of stones in the common bile duct is called
What are three types of environments in which archaebacteria are found?
Archaebacteria are found in extreme environments characterized by high salinity, temperature, and pressure, such as the Dead Sea, hot springs, and deep-sea vents. They are extremophiles that may have evolved very early in Earth's history and are important to Earth's carbon and nitrogen cycles.
Explanation:Types of Environments for Archaebacteria
Archaebacteria, also known as Archaea, are typically found in extreme environments characterized by conditions that are often inhospitable to most life forms. These microorganisms are extremophiles, thriving in areas with high levels of salinity, temperature, and pressure. Three common types of environments where archaebacteria are found include:
High-salt environments: Archaebacteria such as halophiles love very salty conditions, like those in the Great Salt Lake or the Dead Sea.High-temperature environments: Some Archaea are found in hot springs, like the Morning Glory pool in Yellowstone National Park, where they create vibrant colors due to microbial communities.Deep-sea environments: Other Archaea reside around deep sea vents, enduring immense pressure and darkness.These organisms not only exemplify the adaptability of life but also hint at the primordial conditions of ancient Earth, suggesting that Archaea may have been among the earliest life forms to emerge on our planet. In addition to extreme habitats, Archaea are now known to inhabit more common environments such as soil and oceanic plankton, playing a crucial role in environmental processes like the carbon and nitrogen cycles.
The study of the distribution of plants and animals throughout the world is called:
a. biochemistry
b. biogeography
c. evolutionary development
d. paleobiology,
Biogeography is the study of the distribution of animals and plants throughout the different places in the world. This study focuses on the communities of organism in the different areas of the Earth and how they are distributed to these areas. The purpose of this study is to explain the process and mechanism of the distribution of the different species in the world.
What detail is left unresolved at the end of the selection? the porter?