Answers
Answer: True it is necessary
Answer:
True
Explanation:
Related Questions
A strange new species of plant has been discovered. When studying the chromatin from the cells of this plant using the kinds of experiments described above in (b) a 120-bp fragment of DNA is seen. Analysis of the histone core reveals histones in the following proportions: H2A 33.3% H2B 33.3% H3 0% [no histone H3 found] H4 33.3% On the basis of these observations, what conclusions can you make about the probable structure of the nucleosome in the chromatin of this plant? Be specific in describing the nature of the nucleosome: which histones form the core (1pt), how many of each are in there (1pt) and how much core-DNA is around it (1pt).
Answers
Answer:
The nucleosome core is composed of two each of histones H2A and H2B and H4
Explanation:
The nucleosome is the basic structural unit of all eukaryotic genomes. A nucleosome is composed of approximately 146 base pairs of DNA sequence wrapped around a core of histone proteins, which generally consists of two subunits of the histones H2A, H2b, H3 and H4, respectively (i.e., an octamer of histone proteins). Within the cell nucleus, the large DNA molecule is coiled into nucleosomes, this structure is further compacted into chromatin fibers and subsequently into higher-order organization structures to finally form a chromosome.
NEED HELP ASAP !!!
it’s for science !
Answers
Wedge -------- Can split and object
pully ------ uses a rope can change the direction of a force
inclined plane ------- is a ramp
wheel and axle ---- reduces the amount of friction when an object is being moved
lever ------- similar to a seesaw can lift an object
Answer:
Wedge: Can split apart an object-
Pully: uses a rope; can change the direction of a force
Inclined plane: is a ramp
Wheel and axle: reduces the amount of friction when an object is being moved
Lever: similar to a seesaw; can lift an object
Explanation:
Where is the cell wall located?
A. inside the cell membrane
B. surrounding the nucleus
C. inside the nucleus
D. outside the cell membrane
Answers
Which of these phylogenetic trees depicts a different evolutionary history than the others?
A. Tree 1
B Tree 2
C tree 3
D tree 4
Answers
Tree 3 depicts a different evolutionary history than the others. So, the correct option is C.
What is Phylogenetic relationship?A phylogenetic tree is defined as a branching diagram or a tree that shows the evolutionary relationships between different biological species or other entities based on similarities and differences in their physical or genetic characteristics. All life on Earth is part of a single phylogenetic tree that points to common ancestry.
These relationships are identified by using the similarities in DNA, RNA, or protein sequences, or by comparing the anatomical features. Through this, we get to know that all life arises from a common ancestor. In the above given information, Tree 3 shows the phylogenetic relationship.
Thus, Tree 3 depicts a different evolutionary history than the others. So, the correct option is C.
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Iron oxide reacts with aluminum to give aluminum oxide and iron. What kind of chemical reaction is this?
Answers
Answer: Replacement Reaction
The offspring of which individuals would be least closely related? no wonder why they didn't show this in brainly yet.
Answers
Answer: 11 and 14
Explanation:
In humans, mitosis produces cells with ____ chromosomes and _____ chromosomes are found in the gametes after Meiosis.
Answers
Answer:
46, 23
Explanation:
2.)Pain in an area of the shoulder that occurs during a heart attack is called __________________ pain.
Answers
Answer:Overview
A heart attack, or myocardial infarction, is a medical emergency in which the supply of blood to the heart is suddenly and severely reduced or cut off, causing the muscle to die from lack of oxygen. More than 1.1 million people experience a heart attack (myocardial infarction) each year, and for many of them, the heart attack is their first symptom of coronary artery disease. A heart attack may be severe enough to cause death or it may be silent. As many as one out of every five people have only mild symptoms or none at all, and the heart attack may only be discovered by routine electrocardiography done some time later.
Symptoms
Not everyone has the same heart attack symptoms when having a myocardial infarction.
Explanation:
Chest pain is any abnormal discomfort present in the chest region, the person may have muscle pain in the shoulder area and occurs during a heart attack.
What is chest pain?It is the presence of pain or abnormal discomfort located in the chest and it is a common symptom of heart attack.
Being a coronary type pain, it is usually an oppressive type pain that can radiate to the shoulder, specifically to the left arm, neck or jaws.
Therefore, we can conclude that chest pain is any abnormal discomfort present in the chest region, the person may have muscle pain in the shoulder area and occurs during a heart attack.
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What can be inferred from this cladogram? Image showing a cladogram. Traits are listed on the main branch of the cladogram. Vertebral column is the first trait listed at the bottom of the main branch. Lancelet is the first branch coming off the main branch. It appears before the vertebral column trait. Jaws is the second trait listed on the main branch, after the vertebral column. Lamprey is the second branch coming off the main branch. It appears after the vertebral column and before jaws. Walking on four legs is the third trait listed on the main branch. Tuna is the third branch coming off the main branch. It appears after jaws and before walking on four legs. Amniotic egg is the fourth trait listed on the main branch. The salamander is the fourth branch coming off the main branch. The salamander branch appears after walking on four legs and before the amniotic egg. Hair is the sixth and last trait on the main branch. The turtle is the fifth branch that comes off the main branch after the amniotic egg and before hair. The leopard is the final branch coming off the main branch. The leopard branch appears after hair. The amniotic egg evolved before animals could walk on four legs. The organism most related to the turtle is the tuna. The salamander’s DNA differs the most from the leopard. The trait that separates the lancelet from the lamprey is the vertebral column.
Answers
From this cladogram, it can be inferred that:
The amniotic egg evolved before animals could walk on four legs.The organism most closely related to the turtle is the tuna.The salamander's DNA differs the most from the leopard.The trait that distinguishes the lancelet from the lamprey is the vertebral column.What is a cladogram?The cladogram is a phylogenetic tree that represents evolutionary relationships among species based on the presence or absence of particular traits.
Overall, the cladogram provides a visual representation of how species are related to one another based on the presence or absence of specific traits, and how those traits have evolved over time.
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Answer:
The trait that separates the lancelet from the lamprey is the vertebral column.
Explanation:
What occurred during the phase before the phase shown above?
The mitotic spindle fibers pulled apart sister chromatids.
The nuclear envelope reappeared and the cell prepared to divide,
The nucleus dissolved and the microtubules attached to the chromosomes.
Chromosomes lined up at the middle of the cell.
Answers
Answer:
Chromosomes lined up at the middle of the cell
Explanation:
The phase before it is a Metaphase which is where they line up
The process which occurred during the phase before the phase shown above is:
D. Chromosomes lined up at the middle of the cell.According to the complete text, we can see that there is a diagram where there is a phase in cell division which occurs just before the metaphase which is the third phase of mitosis.
As a result of this, we can see that in this stage, the chromosomes are arranged in the middle of the cell as the duplicate genetic material is about to join with the two daughter cells.
Therefore, the correct answer is option D
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5.17.f - test: module five match the term and description group of answer choices influenced by darwin's observations and the observations of others [ choose ] breeders choose desirable traits [ choose ] organisms with more advantageous traits produce more offspring [ choose ] will not create new species [ choose ] will cause minor changes in already existing species
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1. breeders choose desirable traits - Will cause minor changes in already existing species
2. organisms with more advantageous traits produce more offspring - Will not create new species
Breeders choose for little alterations in already existing species when they choose desirable features. These modifications may aid development or disease resistance, or they may be just cosmetic, such as a change in size or colour.
Breeders can raise the probability that desired qualities will be handed down to the following generation by mating individuals who already have such features. The population's prevalence of the desired characteristic rises with time. However, this process only modifies previously existing species; it does not produce new species.
In addition to having more favourable features, these organisms will also have higher rates of successful reproduction, which means they will have more progeny than other organisms in the population.
The desired characteristic will become more prevalent in the population as a result, but no whole new species will be created.
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Based on the information in the table, which of the following best explains why this bug population has changed since the introduction of the invasive plants?
o The bugs are unable to feed on native fruits.
Bugs with longer mouthparts have a survival advantage.
Bugs with smaller body lengths have a helpful adaptation.
o The bugs have started cross-breeding with a larger species.
Answers
The bug population has changed since the introduction of the invasive plants the bugs are unable to feed on native fruits.
Why the population of bug decrease?The population of bug decrease because the invasive plants reduce the population of native plants on which the bug feed. If the food for the bug decreases then the population of the bug is also decreases.
So we can conclude that the bug population has changed since the introduction of the invasive plants the bugs are unable to feed on native fruits.
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The best explanation for the change in the bugs after the introduction of invasive plants is that bugs with longer mouthparts have a survival advantage.
What is natural selection?Natural selection is the process by which individuals of a population that are better suited to their environment are more likely to survive and reproduce.
According to this question, a population of bugs have experienced an increment in the following features:
average length of mouthpartsaverage body lengthThis suggests that the bugs have become more adapted since the introduction of the invasive plants to enable them survive, hence, they developed longer mouthparts and body length.
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I need help this question really tricky instead of a its the
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The set of symptoms and treatment options of Human genetic disorders, are Cystic Fibrosis (CF), Down Syndrome (DS), Hemophilia, Huntington's Disease (HD) and Sickle Cell Disease (SCD)
There are numerous human genetic disorders, each with its own unique set of symptoms and treatment options. Here are several examples:
Cystic Fibrosis (CF): CF affects the respiratory and digestive systems. Treatment involves a combination of airway clearance techniques, medications to thin mucus and control infections, and enzyme replacement therapy to aid digestion.
Down Syndrome (DS): DS is caused by the presence of an extra chromosome 21. Treatment focuses on managing associated health conditions such as heart defects, hearing loss, and cognitive impairments. Early interventions, such as speech and physical therapy, can help individuals with DS reach their full potential.
Hemophilia: Hemophilia is a bleeding disorder characterized by a deficiency of clotting factors. Treatment involves regular infusion of the missing clotting factor to prevent bleeding episodes. Advances in gene therapy offer potential long-term solutions by introducing the missing gene into the patient's cells.
Huntington's Disease (HD): HD is a progressive neurological disorder. Currently, there is no cure for HD, but medications can help manage symptoms such as movement problems and psychiatric symptoms. Supportive therapies, including physical and occupational therapy, can enhance quality of life.
Sickle Cell Disease (SCD): SCD is an inherited blood disorder. Treatment includes pain management during crises, regular blood transfusions, and medications to prevent complications. Stem cell transplantation can be a curative option for some patients.
It's important to note that the treatment options mentioned here may not be applicable to all individuals with these disorders, and ongoing research is constantly exploring new therapeutic approaches for genetic disorders.
The question was incomplete. find the full content below:
List several human genetic disorders and describe the treatments used to overcome the symptoms of a disorder.
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What is the difference between instinct and behavior in an animal
Answers
The difference between instinct and behavior in animals is based on the fact that distinct is an innate response to certain environmental situations while behavior may be acquired in response to external stimuli.
What is the difference between instinct and behavior?The difference between instinct and behavior is that instinctive behaviors are innate which means animals are born with these acquired responses, while behavior depends on the context.
Therefore, with this data, we can see that the difference between instinct and behavior is how these types of responses were acquired by the animal.
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What are the domains of the universal phylogenetic tree?
Answers
Bacteria, Archaea, and Eukarya are the three domains of the global phylogenetic tree.
Which term describes how your display should look?
Answers
Answer:
neat and tidy and they should be easy to navigate
Explanation:
WILL MARK BRAINLIEST!!!
Fat and ATP are different molecules that can both be described as molecules that store
energy. Compare the functions of these molecules in terms of energy storage.
A) O ATP molecules are made when where there is an excess amount of energy,
while fat molecules are used immediately.
B) O ATP molecules are used for long-term storage, while fat is used for
immediate energy
C) O Fat molecules are stable and can be stored for a long time, while ATP is not.
D) O Fat molecules are unstable and can be stored short-term, while ATP
molecules are stable and stored long term.
Answers
Answer:
C) Fat molecules are stable and can be stored for a long time, while ATP is not.
Explanation:
ATP is short-term energy, and fat is long-term energy and is used when when there is no more energy. Fat molecules are also highly stable because of the many covalent bonds
Answer:
C, i think
Explanation:
ATP is short term storage due to the fact that it is produced rapidly and used up just as fast in cells. Fat is long term, usually when there is no energy, fat is burnt up (during exercise is the most common) and used for energy
If a peppered moth was produced that didn't have this camouflage, what do you think would happen to it?
Answers
If a peppered moth was produced that didn't have this camouflage, and it was born into an environment where there was a strong selection pressure for camouflage, it would likely be
at a disadvantage compared to other moths in the population. What happens to peppered moth was produced that didn't have this camouflage?It would be more easily spotted and preyed upon by birds, and thus less likely to survive and reproduce. Over time, this would likely result in the gene for non-camouflage becoming less common in the population, as individuals with this trait would be less likely to pass it on to their offspring.
However, if the environment changed and the selection pressure for camouflage was reduced, the non-camouflaged moths may have a higher chance of survival and reproduction. In this case, the gene for non-camouflage might become more common in the population over time.
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Scientists are testing the impact of soil on the growth of a plant. They add the plant to soil that has been sterilized (removed of all microbes), and the plant fails to grow. What might be one cause of this finding
Answers
Explanation:
not really sure what microbes in the plant Falls to grow
What term is used to describe the large-scale movements of ocean water? Select all that apply.
Answers
Currents is what is used to describe the large-scale movements of ocean water
What is ocean circulationThe large-scale movements of ocean water are characterized by four key phenomena: ocean currents, tides, waves, and thermohaline circulation.
Ocean currents are the directed movements of ocean water caused by factors such as wind, density differences, and the Coriolis effect due to Earth's rotation.
Tides refer to the rise and fall of sea levels driven by the gravitational forces exerted by the Moon and the Sun, and the rotation of Earth.
Waves are oscillations traveling through ocean water, triggered by elements like wind, earthquakes, or other geological activities.
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A class is identifying the features in the map above. Student 1 thinks that X is a seamount and Student 2 thinks that X is a volcanic island. Who is correct and why?
A. Student 1 because a seamount rises above the ocean surface.
B. Student 1 because a seamount does not rise above ocean surface.
C. Student 2 because a volcanic island rises above the ocean surface.
D. Student 2 because a volcanic island does not rise above ocean surface.
Answers
Answer:
B. Student 1 because a seamount does not rise above ocean surface.
Explanation:
To find - A class is identifying the features in the map above. Student 1 thinks that X is a seamount and Student 2 thinks that X is a volcanic island. Who is correct and why?
Reason -
We know that,
If a volcano does not reach the surface of the ocean, it is called a seamount.
If a volcano grows in height and volume enough to reach the ocean’s surface, it becomes a volcanic island.
So,
The correct option is - B. Student 1 because a seamount does not rise above ocean surface.
Mrs. Maxwell used the analogy “a cell is like a factory” to explain the idea of cell organization to her class, and she never went into any more details. Is this analogy good enough to present a true picture of a cell?
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Answer:
Yes, because an organism can be considered a factory, so yes, a cell can be represented as a factory.
Explanation:
In DNA, a sequence of three bases is a code for the placement
of a certain amino acid in a protein chain. The table shows some
amino acids with their abbreviations and DNA codes.
Which amino acid chain would be produced by the DNA base
sequence below?
C-A-A-G - T- T - A-A-A-T - T-A
Answers
Why is the Antarctic current so much faster than other currents
Answers
Which of Earth's spheres cycle carbon relatively quickly?
Answers
What is Cycle Carbon?
The carbon cycle is the movement of carbon between the different reservoirs on the earth. The key carbon cycles operate at the terrestrial, atmospheric and oceanic levels. Carbon is stored within the atmosphere in land and in oceans, and is moved by various processes. Carbon stores are where the carbon is stored, and fluxes are the movement/transfer of the carbon between stores. Processes are the physical ways in which fluxes happen
Deforestation and the burning of fossil fuels such as coal and oil have led to higher concentrations of carbon dioxide in the atmosphere
Answers
Deforestation and the burning of fossil fuels such as coal and oil, are the two main causes of higher concentrations of carbon dioxide in the atmosphere.
The statement "Deforestation and the burning of fossil fuels such as coal and oil have led to higher concentrations of carbon dioxide in the atmosphere" refers to the fact that human activities have significantly increased the amount of carbon dioxide in the atmosphere, leading to a rise in global temperatures and climate change.
Deforestation contributes to this problem by reducing the amount of trees that absorb carbon dioxide during photosynthesis, while the burning of fossil fuels releases stored carbon into the atmosphere. These actions have negative impacts on the environment, including increased global temperatures, rising sea levels, and more frequent extreme weather events.
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--The complete question is, Deforestation and the burning of ___________ such as coal and oil, are the two main causes of higher concentrations of carbon dioxide in the atmosphere.--
28. Flowers are derived evolutionary from modified __________________.
Answers
Answer:
Flowers are derived evolutionary from modified leaves.
Explanation:
Flowers are modified leaves possessed only by the angiosperms, which are relatively late to appear in the fossil record. The flowering plants have long been assumed to have evolved from within the gymnosperms; according to the traditional morphological view, they are closely allied to the Gnetales.
The two topographic maps
below are of the same location
at different times.
What conclusion can you make
about why the later map looks
so different?
1859 and 2014
Answers
Answer:
Development has taken place
Explanation:
As the population increases , changes come along with land demarcation.
Natural occurrence can happen, that's, heavy rainfall can cause erosion and other things.
Which of the following influences the amount of ozone pollution near Earth's surface?
O An area's weather patterns
O Nearby water resources
O Volcanic eruptions
O Plants undergoing photosynthesis
Answers
All the four options can lead to ozone pollution near the earth's surface.
Ozone Pollution- Increased wheezing, coughing, and chest tightness are brought on by ozone pollution, which results from hydrocarbon and nitrogen oxide emissions from cars and other sources mixed with sunshine.
Plants undergoing photosynthesis- Significant producer of VOCs (Volatile Organic Compounds) is woody vegetation. Before they react to generate ozone in the atmosphere, where it can linger for several weeks, NOx and VOCs can be transported over great distances by local weather patterns.Volcanic eruptions- Volcanoes probably generate enough bromine to deplete the ozone layer locally and alter the chemistry of the stratosphere. According to estimates, 1 to 5 percent of ozone damage is thought to be caused by volcanoes, 15 to 20 percent by other natural sources, and a staggering 75 to 85 percent by human activity.Water resources- From farms, factories, and towns, streams and rivers transport pollutants like chemicals, fertilizers, and heavy metals into our bays and estuaries, where they are then transported out to sea. The wind also brings in marine waste, particularly plastic, as does water from storm drains and sewage systems.Weather Patterns- As a result of global warming, there will be an increase in more extreme weather, including heat waves, extreme rainfall events, and other phenomena. Because the chemical reactions that produce ozone in the atmosphere take place more often in hot temperatures, heat waves increase the amount of ground-level ozone pollution.To learn more about ozone pollution- https://brainly.com/question/14154063
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Answer:
An area's weather patterns
Explanation:
the teacher told me
Hey kgwellington798 wherd you go you had a link
Answers
Insta pics be like
Answer:
:P
Explanation: