Nucleosomes are DNA wrapped around a protein core of 8 histone molecules and are involved in DNA packing. What helps histones bind to DNA?
A. High proportions of negatively charged amino acids such as lysine and arginine.
B. High proportions of positively charged amino acids such as lysine and arginine
C. Low proportions of negatively charged amino acids such as lysine and arginine
D. Low proportions of positively charged amino acids such as lysine and arginine
Answers
Answer: The answer is B. High proportions of positively charged amino acids such as lysine and arginine
I hope this helps. :)
Answer: The answer is B. High proportions of positively charged amino acids such as lysine and arginine
I hope this helps. :)
Related Questions
What are the fundamental methods, models, or theories in
nanotribology? Please be as explicative as you can.
Answers
The fundamental methods, models, and theories in nanotribology include Atomic Force Microscopy (AFM), Molecular Dynamics (MD) simulations, Contact Mechanics, Surface Chemistry, and Lubrication Theory.
Nanotribology, also known as nanoscale tribology, is the study of friction, wear, and lubrication at the nanoscale level. It focuses on understanding the fundamental mechanisms and behaviors of surfaces and interfaces when subjected to relative motion on the nanometer scale.
There are several fundamental methods, models, and theories employed in nanotribology research:
Atomic Force Microscopy (AFM): AFM is a widely used technique that allows for the measurement and manipulation of surfaces at the atomic and molecular scale. It provides detailed information about surface topography, friction, and adhesion forces.
Molecular Dynamics (MD) Simulations: MD simulations use numerical methods to simulate the motion and interactions of atoms and molecules. These simulations provide insights into the behavior of surfaces, lubricants, and additives at the nanoscale, allowing for the prediction of friction and wear properties.
Contact Mechanics: Contact mechanics is the study of the deformation and interaction between contacting surfaces. It involves the analysis of forces, stresses, and deformation at the interface, which helps in understanding the origins of friction and wear.
Surface Chemistry: Surface chemistry plays a crucial role in nanotribology. It involves studying the chemical composition, structure, and reactivity of surfaces, as well as the formation of boundary layers and tribofilms during sliding.
Lubrication Theory: Lubrication theory focuses on understanding how lubricants reduce friction and wear between surfaces. It includes concepts such as boundary lubrication, hydrodynamic lubrication, and elasto hydrodynamic lubrication, which describe different mechanisms of lubrication at the nanoscale.
These methods, models, and theories collectively contribute to advancing our understanding of nanotribology and have applications in various fields, including materials science, nanotechnology, and engineering.
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In 2010, an explosion on an oil rig caused a terrible oil spill in the Gulf of Mexico. As oil started washing up on shore, the area wildlife was drastically affected. A scientist wonders: how do different amounts of water pollution affect the height of radish plants
Answers
A heterozygous tall (Tt) plant is crossed at with a short plant (tt). The probability that offspring plants will be tall is
a. 25%
b. 50%
c. 75%
d. 100%
Answers
The answer is 50%, or B.
"one drop of water leaking per second from a faucet can waste more than 2,300 gallons of water per year." the most reliable source of this information is a
journalist
plumber
salesman
scientific website
Answers
Answer:
Answer is D. scientific website
Explanation:
The other person who answered this was correct
Writing a scientific paper is a way to present your original findings to other scientists or to evaluate their work. Thus, option D is correct.
What is the role of scientific website?The most popular site for searching and analyzing scientific citation data is called Web of Science (WoS).
It is utilized as a dataset for sizable, data-intensive studies, as well as a research tool supporting a wide range of scientific tasks across several knowledge domains.
Researchers can conduct thorough searches across a variety of resources using WoS's common search language, navigation environment, and data structure, and they can employ citation linkages to find pertinent research findings.
As a result, they play a crucial role in how modern science develops, where one scientist's work builds on that of another.
Therefore, scientific website, most reliable source of this information.
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I REALLY NEED HELP ASAP. PLEASE BE SERIOUS AND SO NOT JUST TAKE THE POINTS. I WORKED HARD FOR THEM AND FOR ONCE I HAVE A QUESTION. PLEASR ANSWER!
Answers
Answer:
1-pacific plate
2-south America plate
3-nouth America plate
4-eurasian plate
8-juan de fuca plate
11- Caribbean plate
14-philipine plate
Explanation:
Which of the following makes up the top layer of a soil profile?
Oorganic material from plants and animals
Ominerals and organic material
O solid rock layer
O inorganic materials
Answers
Answer:
I think its organic material from plants and animals
Explanation
Edge 2020
Answer:
that guy is correct.. on edge-nuity it's organic material...
Explanation:
HELP ASAP
Tina is getting ready to plan her science fair project. She is interested in doing something with tomato plants. Which of the following could be tested through scientific experimentation?
Which variety of tomato plant produces the tomatoes that taste the best?
Which variety of tomato plants will look the most attractive in her garden?
Which variety of tomato plant will produce the greatest yield in her garden?
Which type of fertilizer will produce the tastiest tomatoes?
Answers
Answer:
C
Explanation:
Because that is the only one you can measure without being biased
Have A graet one!
Autotrophs:____.
a. are able to survive without oxygen.
b. cannot assimilate carbon.
c. are primary consumers.
d. use photosynthesis.
Answers
Autotrophs: use photosynthesis.
What are Autotrophs?
Autotrophs are living things that can make their own nourishment from inorganic resources. The roots of the terms "autotroph" are "self" and "troph," which refer to nourishment. An autotroph is an organism that can sustain itself entirely without the help of other living things.
Because they are necessary for the existence of all other life forms, autotrophs are very significant. For instance, there would be no herbivorous animals and no carnivorous creatures that consume herbivores if there were no plants that used carbon dioxide gas and sunshine to produce carbohydrates. Autotrophs are frequently referred to as "producers" because of this. They give the energy that all heterotrophs (organisms that must obtain their food from others) need in order to thrive, and they are the foundation of an ecosystem's energy pyramid.
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24. What is the total magnification of this compound microscope using the low power objective
lens?
Answers
Answer: The total magnification of a low power objective lens combined with a 10x eyepiece lens is 100x magnification, giving you a closer view of the slide than a scanning objective lens without getting too close for general viewing purposes.
Explanation:
What is biodiversity? Please explain. I’ll give literally anyone branliest...I NEED HELP ASAP!
Answers
Answer: Biodiversity is the variety and variability of life on Earth. Biodiversity is typically a measure of variation at the genetic, species, and ecosystem levels. Terrestrial biodiversity is usually greater near the equator, which is the result of the warm climate and high primary productivity.
Explanation:
Answer:
The variety of life in the world or in a particular habitat or ecosystem. (It is a noun).
Explanation:
name and specifically describe a point mutation which will give the type of effect that is not included in a).
Answers
One example of a point mutation that can have an effect not included in the options given is a frameshift mutation.
A frameshift mutation occurs when a nucleotide is either inserted or deleted from the DNA sequence, causing a shift in the reading frame during translation. This alteration disrupts the correct grouping of codons, resulting in a completely different amino acid sequence downstream from the mutation site.
For instance, let's consider a deletion of a single nucleotide in the DNA sequence. This deletion shifts the reading frame, causing all subsequent codons to be misread. As a result, the translation process produces a completely different protein with altered amino acid sequence. This can lead to a non-functional or severely impaired protein, affecting its structure, stability, and function. The consequences of frameshift mutations can be dramatic, often resulting in loss of protein function and potentially causing genetic disorders.
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difference between the teeth of herbivorous, carnivorous and omnivorous animal
Answers
Herbivorous animals typically have flat and broad teeth for grinding plant material, carnivorous animals have sharp and pointed teeth for tearing flesh, while omnivorous animals have a combination of both types of teeth for a varied diet.
Herbivores, carnivores, and omnivores differ in their dental formula. They are distinguished by the shape, size, and number of their teeth, which is related to their dietary habits.
The differences between the teeth of herbivores, carnivores, and omnivores are described below:Herbivores:Herbivorous animals, such as cows, deer, and rabbits, have teeth that are specialized for grinding and cutting plant material.
They have large, flat molars with rough surfaces that help to break down tough plant fibers. They also have incisors that are used for biting and snipping leaves, stems, and other plant parts. Herbivores' dental formula is 3/3, 1/1, 4/4, 3/3, which means they have three incisors, one canine, four premolars, and three molars in each jaw.
Carnivores:Carnivorous animals, such as lions, tigers, and wolves, have teeth that are specialized for tearing flesh. They have large, sharp canine teeth that are used for killing and gripping prey. They also have molars and premolars that are used for crushing bones and slicing meat.
Carnivores' dental formula is 3/3, 1/1, 4/4, 2/3, which means they have three incisors, one canine, four premolars, and two or three molars in each jaw.
Omnivores:Omnivorous animals, such as bears, raccoons, and humans, have teeth that are adapted for both plant and animal matter. They have incisors that are used for biting and grinding plant material, as well as canine teeth that are used for tearing meat.
They also have molars and premolars that are used for crushing and grinding both plant and animal matter. Omnivores' dental formula is 3/3, 1/1, 4/4, 2/3, which means they have three incisors, one canine, four premolars, and two or three molars in each jaw.
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Mutation please help.
Answers
Answer: i dont know how to do this
Explanation:
A scientist performed an experiment using various lengths of wire, all with the same cross-sectional area. The resistance of each length of wire was measured. The scientists results appear in the data table below.
Length Resistance
(meters)
(ohms)
Which of the following is the best conclusion to draw from this experiment?
O Resistance increases as the cross-sectional area of the resisting material increases.
O Electrical signals increase in power consumption as the length of wire increases
O Electrical signals decrease in strength as the distance they travel increases
Resistance increases as the total length of the resisting material decreases
5.1
11.0
16.0
18.0
23.0
1.6
3.8
4.6
5.9
7.5
Answers
Answer:
a
Explanation:
which statement best describes the organization of the taxa shown in the image
A. as you move down the structure, the groups become more general
B. there are more organisms in each group as you move down the structure
C. as you move up the structure the group becomes more specific
D. as you move down the structure, there are fewer organisms in each group
Answers
Answer:
D. as you move down the structure, there are fewer organisms in each group.
Explanation:
When we move down from kingdom to species, the number of organisms decreases because more closely related organisms are placed down the group. There are fewer kingdoms that have a large number of organisms in it and has less similarities among them and when we move down, the number of organism decreases in number and at the end there are few organisms are present in it which is more closely related to each other.
what factors are responsible for increasing the size of a population?
Answers
Answer:
Economic development
Explanation:
1. Natural increase: This refers to the difference between the number of births and the number of deaths in a population. If the number of births is greater than the number of deaths, the population will grow.
2. Immigration: If people move into a population from other areas, it can contribute to population growth.
3. High fertility rates: A high fertility rate, or the average number of children a woman has during her reproductive years, can also contribute to population growth.
4. Increased life expectancy: If people are living longer due to advances in medicine and public health, the population will grow.
5. Changes in social norms: Changes in social norms, such as the acceptance of smaller families, can also impact population growth.
It's worth noting that population growth is not always a positive thing, as it can put strain on resources and the environment. Some countries have implemented policies to encourage smaller families and slow population growth.
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when a man has an allele combination ww for a trait, what percentage of his gametes will have a dominant allele for that trait?
Answers
Answer:
0%
Explanation:
The man is homozygous recessive for his trait. ( Since you have used small letters for the genotype I am assuming it to be recessive) . At the time of gamete formation each gamete will get one of the two alleles according to Mendel's law of Segregation as w and w . So both the gametes will receive recessive allele.Hope this helps!
1. **How does the amount of carbon the US emits compare to other countries?
Answers
Answer:
5.1 billion metric tons of carbon is emitted by U.S as compared to other countries which emits about 32.5 billion metric tons of carbon.
Explanation:
U.S emits about 5.1 billion metric tons of carbon in the atmosphere which contribute in air pollution also helps in rising the temperature of the earth atmosphere because carbondioxide is a green house gas which increases the earth temperature. The main reason of high amount of carbon emission is the high number of industries and more fossil fuels is burnt in the engines of vehicles.
A reaction is catalysed by an enzyme.
Figure 2 shows how temperature
affects the rate of this reaction.
rada
4-5
Rate of Reaction (units)
Explain why the reaction has stopped at point Z.
40
30
20
0
Figure 2
1
10 20 30 40 50 60
Temperature (°C)
Look at points X and Y on Figure 2.
Describe the relationship between rate of reaction and temperature between points X and Y.
Answers
Answer:
2.1)As Temperature increases, the rate of reaction increases.
2.2)Enzymes are sensitive to changes in temperature. At point Z, the temperature beacame too high for the enzyme to function, thereby denaturing the enzyme. Once the enzyme was denatured the reaction could not continue.
During mitosis in animal cells, at which phase do centrioles begin to move apart? anaphase prophase prometaphase telophase metaphase
Answers
During mitosis in animal cells, the phase do centrioles begin to move apart is prophase stage.
Prophase marks the start of mitosis and is preceded by interphase. During the prophase stage, the centrosomes divide and move away from one another, and microtubules begin to develop from the centrosomes, forming the spindle apparatus. The prophase stage of mitosis is characterised by the disintegration of the nuclear envelope, which is a double membrane that surrounds the nucleus. In addition, the chromatin threads begin to condense into discrete chromosomes during the prophase stage.
In animal cells, the centrioles are the tiny, self-replicating organelles that aid in cell division by aiding in the formation of the mitotic spindle apparatus. The mitotic spindle is critical for the segregation of chromosomes in the dividing cells. It is therefore established that the centrioles begin to move apart during the prophase stage in animal cells during mitosis. So therefore centrioles begin to move apart during the prophase stage in animal cells during mitosis.
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4HCO3
How many total atoms are in the formula above?
Answers
Answer:
No. of atoms are 1 sodium + 1 Hydrogen + 1 carbon + 3 oxygens = 6 atoms per molecule.
Explanation:
What do the results of these crosses suggest about the inheritance of color and tail fin shape in goldfish?.
Answers
The inheritance of color and fin shape are each due to segregation of two alleles at a single gene is the right response about the inheritance of color and tail fin shape in goldfish.
Color gene consists of two allele of a gene = AaFin shape gene also consists of two allele of different gene = BbThat is in line with Mendel's law. Gold after the first cross of black and gold (F1 generation). The only fish in this F1 generation are gold in color. Because there is only one type in the F1 generation, we may state that the dominant color is gold and that both of the parental colors are homozygous (gold).
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Question correction:
An experienced goldfish breeder receives two unusual male goldfish. One is black rather than gold, and the other has a single tail fin rather than a split tail fin. The breeder crosses the black male to a female that is gold. All the F1 are gold. She also crosses the single-finned male to a female with a split tail fin. All the F1 have a split tail fin. She then crosses the black male to F1 gold females and, separately, crosses the single-finned male to F1 split-finned females. The results of the crosses are shown below.
Black male ×F1 gold female:
Gold 32
Black 34
Single-finned male ×F1 split-finned female:
Split fin 41
Single fin 39
1. What do the results of these crosses suggest about the inheritance of color and tail fin shape in goldfish?
-The inheritance of color and fin shape are due to segregation of two alleles at the same gene.
-The inheritance of color and fin shape are each due to segregation of two alleles at a single gene.
-The inheritance of color is due to segregation of two alleles at different genes; the same is true for fin shape.
What are California's major mineral resources
Answers
Answer:
The term mineral resources includes minerals plus various types of rocks and sediment it also includes products made from these materials. California's major mineral resources include sand, gravel, crushed stone, building stone, gold, silver, iron, evaporite minerals, and clay.
Explanation:
suppose pollen from one of the suspects was consistent with the pollen found at the crime scene what arguments could the defense attorney present to discredit the evidence
Answers
The defense attorney can present the evidence that the pollen could have been transferred there by a pollinators such as bees or a butterflies to discredit the evidence.
What is pollen?Pollen is a tiny piece of matter which is produced by the male part of the flower and which is transferred to the female part of another flower.
Pollen can be transferred from one flower to another by means of pollinators such as bees and butterflies.
Therefore, the defense attorney can present the evidence that the pollen could have been transferred there by a pollinators such as a bee or a butterfly to discredit the evidence.
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. When an animal is thirsty, it responds by -
eating food
drinking water
blinking rapidly
sweating excessively
eating food
drinking water
blinking rapidly
O
sweating excessively
Answers
when an animal is thirsty, it responds by drinking water
What kind of light does the human eye can see?
Can u give me a simple answer please I need an answer by 10 if u don't answer until 10 Am u will not get brainliest?
Answers
If an rna molecule is single stranded, the dna molecule has 2 strands, characteristically described as?.
Answers
RNA (ribonucleic acid) and DNA (deoxyribonucleic acid) are both nucleic acids that play important roles in the storage and transfer of genetic information within cells.
One key difference between the two is their structure: RNA is typically single-stranded, while DNA is double-stranded.
RNA is a single-stranded molecule that is composed of nucleotides, which are the building blocks of RNA. Each nucleotide contains a nitrogenous base (adenine, cytosine, guanine, or uracil), a sugar (ribose), and a phosphate group. RNA plays a variety of roles in the cell, including serving as a template for protein synthesis and as a regulator of gene expression.DNA, on the other hand, is composed of two complementary strands of nucleotides that are held together by hydrogen bonds.
The nitrogenous bases in DNA are adenine, cytosine, guanine, and thymine. These bases pair up in a specific way, with adenine always pairing with thymine, and cytosine always pairing with guanine. This pairing is known as base pairing and is the foundation of the double helix structure of DNA. The sugar in DNA is deoxyribose, which is the source of the name deoxyribonucleic acid. DNA is the genetic material that carries the instructions for the development, function, growth and reproduction of all living organisms.
The double-stranded structure of DNA is often described as the "double helix," a term coined by James Watson and Francis Crick in 1953, who were awarded the Nobel Prize in Physiology or Medicine in 1962 for the discovery of the structure of DNA. The double helix structure allows for the stability of the genetic information stored in DNA and also allows for the easy replication of DNA during cell division.
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Farmers have developed a progressively better process in which seeds from the healthiest and most productive plants are saved for planting the next year. what is this process called?
threshing
hybrid selection
phenotypic selection
viability
Answers
Farmers develop plant seeds with a process that is selecting the healthiest and most productive seeds stored for planting the following year. This process is called hybrid selection.
What are plant seeds?Plant Seeds are Plants or parts thereof that are used to reproduce and/or reproduce Plants. Hybrid Selection is the product of a cross between two genetically different rice parents. If the parents are selected correctly, the resulting hybrid will have higher vigor and yield than the two parents.
So that when the seeds are planted next year, they will produce good-quality plants. Hybrid planting can increase production without increasing the dosage of fertilizers and other inputs, but the yield will be even higher if fertilization is increased.
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What’s order does these go in?
Answers
I dont remember. Please provide more information.
What is the best method for describing and mapping terrestrial biomes? Biome Metric System (BMS) There's no standardized method, so the best method is to evaluate climatic conditions and the dominant form of vegetation International System of Biomes (ISB) Universal Biome System (UBS) There's no standardized method, so the best method is to evaluate human uses and valuation of the area
Answers
The best method for describing and mapping terrestrial biomes typically involves evaluating climatic conditions and the dominant form of vegetation. This approach is widely used and forms the basis for various classification systems, including the Köppen-Geiger climate classification system and the Holdridge life zone classification system. These systems consider factors such as temperature, precipitation, and vegetation types to classify and map different biomes.
While there is no universally standardized method for describing and mapping biomes, the evaluation of climatic conditions and vegetation provides a robust and scientifically grounded approach. It allows for the identification of distinct biomes based on their ecological characteristics and helps understand the distribution of different biomes across the Earth's surface.
Other approaches, such as the International System of Biomes (ISB) or Universal Biome System (UBS), may incorporate additional factors or emphasize human uses and valuation of the area. These approaches may be more focused on human perspectives or conservation priorities rather than purely ecological considerations. However, when it comes to a scientific understanding of biomes, evaluating climatic conditions and vegetation remain key factors.
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