Which change to the model would improve its accuracy? A. Move each neutron so it is next to a proton. B. Move the protons and neutrons to a small space in the center. C. Move the protons and electrons to a small space in the center. D. Move all of the particles so that they are evenly spaced.
Answers
Answer:
B
Explanation:
B. Move the protons and neutrons to a small space in the center.
Answer:
B. Move the protons and neutrons to a small space in the center.
Explanation:
Related Questions
What happens to cells when they undergo differentiation?.
Answers
Answer:
It causes deceases.
Explanation:
The process through which a cell transforms from one cell type to another is known as cellular differentiation. In most cases, the cell transforms into a more specialized form. As a multicellular organism develops from a basic zygote to a complex system of tissues and cell types, it undergoes many stages of differentiation.
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Hope this helps!
Scientists hypothesize that a certain species of animal existed in the past.
But fossils of the species have never been found. Which two statements could explain why?
A. Their bodies contained radioactive atoms.
B. Their bodies decomposed quickly.
C. There were very few members of the species.
D. Minerals seeped into their bones.
PLEASE HELP ASAP
Answers
The two statements that could explain the reason for why fossils of the species have never been found are;
a. There were few members of the species.
d. Their bodies decompose quickly.
What are fossils ?Any surviving remains, impression, or evidence of a once-living thing from a previous geological epoch is referred to as a fossil all those things such such as exoskeletons, bones, shells can be refers to all fossils together.
Even though certain species of animal may have lived in the past, according to scientific theory.However, the species' fossils have never been discovered since bodies decomposed quickly.
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When Luca thinks about how a setting relates to his life, he is
A) explaining the setting.
B) identifying the setting.
C) analyzing the details of the setting.
D) making a connection with the setting.
Answers
Answer:
d
Explanation:
Answer:D
Explanation:
Was John's hypothesis supported or rejected? Use data to discuss this. Which fertilizer worked the best? Explain your answer using data from your table. Which plant did not grow well? Explain your answer using data from your table. Describe how the investigation could be tested further.
Answers
a. John's hypothesis that organic fertilizer would make the plants grow taller was not supported.
b. the chemical fertilizer worked the best in promoting plant growth compared to the organic fertilizer and the absence of fertilizer.
c. The plant that did not grow well was the one without any fertilizer.
d. One can further test the investigation by increasing the sample size and repeat the experiment.
How do we calculate?a. Based on the data provided, John's hypothesis that organic fertilizer would make the plants grow taller was not supported but the plant with the chemical fertilizer grew the most.
b. The plant with organic fertilizer showed some growth but was consistently shorter than the plant with chemical fertilizer. The plant without any fertilizer showed minimal to no growth, indicating that fertilizer, whether organic or chemical, is necessary for optimal plant growth.
c. The plant that did not grow well was the one without any fertilizer as it had minimal growth throughout the observation period, with a final height of only 0.2 cm on day 10.
d. Increasing the sample size instead of using only one seed per pot, multiple seeds could be planted in each pot to account for individual variation and enhance the statistical reliability of the results.
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Complete question:ohn had a science fair project that he needed to do. He wanted to test the effects that organic and chemical fertilizers had on plant growth. John predicted that the organic fertilizer would make the plants grow taller. He used three pots, three of the same type of seed, soil, organic fertilizer, chemical fertilizer, water, and a ruler. John put soil in the pots. He added chemical fertilizer to the first pot, organic fertilizer in the second pot, and no fertilizer in the third pot. He then planted one seed in each pot. John had to water the pots daily. He also checked for growth and took measurements for a period of 10 days. He measured the height of the plants.Days No Fertilizer (cm) Chemical Fertilizer (cm) Organic Fertilizer (cm)1 0 0 02 0 0 03 0 0 04 0 0 05 0 0.5 06 0 1.3 07 0 1.9 0.38 0 2.2 1.69 0 4.5 3.210 0.2 5.2 3.8John made a data table to record his measurements.After the 10th day, John observed that the plant with the chemical fertilizer grew the most.Was John's hypothesis supported or rejected? Use data to discuss this. Which fertilizer worked the best? Explain your answer using data from your table. Which plant did not grow well? Explain your answer using data from your table. Describe how the investigation could be tested further.
1. The temperature of four ponds was measured at 6:00 AM. Which of the ponds would probably have the highest dissolved oxygen concentration?
O Pond A
O Pond B
O Pond C
O Pond D
Answers
The temperature of four ponds was measured at 6:00 AM. Pond A
of the ponds would probably have the highest dissolved oxygen concentration
What would boost the dissolved oxygen level in a pond?By boosting wind and wave motion, introducing plants to water, and exposing water to pure oxygen, dissolved oxygen levels are enhanced. Employing the latter approach may result in supersaturation, or oxygen levels above normal levels.
Most pond water may store 10 to 12 mg/L of oxygen in general. The biological degradation of organic material, such as rotting plants and animals or animal and human wastes, reduces dissolved oxygen. Dissolved oxygen levels below 6 mg/L can have a negative impact on pond life.
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Which image of an everyday item most closely resembles the structure of DNA?
Answers
Answer:
spiral staircase
Explanation:
A spiral staircase resembles the structure of DNA.
The scientific method is a fluid process. This means that all or parts of the scientific method may be used in any order, following a general process. true or false?
Answers
Answer:
True
Explanation:
what can the reader conclude about ecosystems based on the information of this passage
Answers
Answer: Ecosystems are so developing entities of biological communities
Explanation:
The conditions of pituitary gigantism in children and acromegaly in adults are produced by excessive levels of:.
Answers
The conditions of pituitary gigantism in children and acromegaly in adults are produced by excessive levels of growth hormone (GH). These hormonal imbalances are often caused by a benign tumor in the pituitary gland, which leads to the overproduction of GH. In children, this results in pituitary gigantism, characterized by rapid growth and tall stature. In adults, the excessive GH leads to acromegaly, causing an abnormal enlargement of body parts, such as hands, feet, and facial features.
The conditions of pituitary gigantism in children and acromegaly in adults are produced by excessive levels of growth hormone (GH) which is released from the pituitary gland. Pituitary gigantism occurs when there is an excess of GH secretion during childhood or adolescence before epiphyseal fusion occurs. This results in abnormal growth and gigantism. Acromegaly, on the other hand, occurs when there is an excess of GH secretion in adulthood after epiphyseal fusion has already occurred. This results in enlargement of hands, feet, and facial bones, as well as soft tissue growth. Both conditions are caused by the same underlying issue of excessive levels of GH secretion.
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what is a group of organs with a unique collective function called?multiple choice question.organelleorgan systemorganismwhat is a group of organs with a unique collective function called?multiple choice question.organelleorgan systemorganismwhat is a group of organs with a unique collective function called?multiple choice question.organelleorgan systemorganism
Answers
A group of organs with a unique collective function is called an organ system, option B is correct.
Organ systems are specialized groups of organs that work together to perform specific functions necessary for the overall functioning of an organism. Each organ within a system has its own specific role, but they collaborate to achieve a common objective. Examples of organ systems include the respiratory system, digestive system, cardiovascular system, and nervous system.
The respiratory system, for instance, comprises organs such as the lungs, trachea, and diaphragm, working together to facilitate the exchange of gases. Similarly, the digestive system involves organs like the stomach, intestines, and liver, functioning together to process and absorb nutrients. These organ systems form a coordinated network, ensuring the proper functioning and survival of the organism, option B is correct.
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The correct question is:
What is a group of organs with a unique collective function called? [multiple choice question]
A. organelle
B. organ system
C. organism
only 4% of people have type ab blood. a) onaverage,howmanydonorsmustbecheckedto find someone with type ab blood?
Answers
Answer:
On average, you would need to check 25 donors to find someone with type AB blood, as it is only found in approximately 4% of the population.
The fixation of nitrogen requires _______. Group of answer choices Fe-Mo protein Fe protein Ferredoxin Both A and B are correct All of the above are correct
Answers
The fixation of nitrogen requires the presence of both Fe-Mo protein and Fe protein.
Option B, "Fe protein" is correct.
Nitrogen fixation is a process in which atmospheric nitrogen (N2) is converted into a form that can be used by living organisms like plants. Nitrogen is a critical component of many biological molecules such as nucleic acids, proteins, and chlorophyll. The process of nitrogen fixation is carried out by certain microorganisms such as bacteria, archaea, and cyanobacteria.
These microorganisms contain special enzymes that can break the strong triple bond between the nitrogen molecules in N2 and convert them into biologically available forms such as ammonia (NH3) or nitrate (NO3-). The enzymes responsible for nitrogen fixation contain special metal cofactors such as Fe-Mo protein or Fe protein, which are involved in the chemical reactions that convert nitrogen into ammonia or nitrate. Thus, the fixation of nitrogen requires the presence of both Fe-Mo protein and Fe protein. Option B, "Fe protein" is correct.
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Earliest eon of the earth's history
A. Cenozoic Era
B. Precambrian
C. Trilobite
D. Mesozoic Era
Answers
Answer: the Mesozoic era came before the others however the accurate earliest eon is the Hadeon to be exact, but from the options you provided, answer it D.
Explanation:
finding a middle way to develop europe’s fisheries dependent areas: the role of fisheries local action groups
Answers
Fisheries Local Action Groups (FLAGs) play a significant role in finding a middle way to develop Europe's fisheries dependent areas.
These groups are established to promote sustainable development in these areas by bringing together stakeholders from the fishing sector, local communities, and public authorities.
The main goal of FLAGs is to support projects and initiatives that enhance the economic, social, and environmental aspects of fisheries and aquaculture activities. They provide funding and technical assistance to help these areas adapt to changing conditions and improve their competitiveness.
By facilitating cooperation and collaboration among different actors, FLAGs help promote innovation, diversification, and added value in fisheries-dependent areas. They also aim to improve the quality of life for local communities, ensuring the sustainable use of marine resources and preserving the cultural heritage linked to fishing activities.
In summary, the role of Fisheries Local Action Groups is to foster a balanced approach that benefits both the fishing industry and the local communities in Europe's fisheries dependent areas.
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which statement is an alternative hypothesis for the experiment? changes in membrane potential are gradual when a nerve cell transmits an action potential. changes in membrane potential depend on movements of ions within cellular compartments. changes in membrane potential occur rapidly to signal an action potential. changes in membrane potential resist movements of charged ions across the membrane.
Answers
This statement proposes that there is a significant relationship between changes in membrane potential and the rapid signaling of an action potential, which contradicts the null hypothesis.
The alternative hypothesis for the experiment is the statement that contradicts the null hypothesis and proposes that there is a significant relationship between the variables being tested. In this case, the null hypothesis would be that changes in membrane potential are not affected by the movements of ions within cellular compartments.
Out of the four statements provided, the one that represents an alternative hypothesis is "changes in membrane potential occur rapidly to signal an action potential." This statement proposes that there is a significant relationship between changes in membrane potential and the rapid signaling of an action potential, which contradicts the null hypothesis.
The other three statements do not represent alternative hypotheses because they do not propose a significant relationship between the variables being tested.
"Changes in membrane potential are gradual when a nerve cell transmits an action potential" and "changes in membrane potential resist movements of charged ions across the membrane" are simply describing the behavior of membrane potential without proposing any relationship to the movements of ions.
"Changes in membrane potential depend on movements of ions within cellular compartments" does propose a relationship between the two variables, but it does not contradict the null hypothesis that there is no significant relationship.
In conclusion, the statement "changes in membrane potential occur rapidly to signal an action potential" represents an alternative hypothesis for the experiment.
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Fill in the blanks:
In photosynthesis, ____________________ energy is transformed into __________________energy and _______________________ gas is released. In cellular respiration, ________________ is broken down and __________ gas is released.
Answers
Answer:
Fill in the blanks:
In photosynthesis, light energy is transformed chemical energy carbon dioxide gas is released. In cellular respiration, a glucose molecule is broken down and carbon dioxide gas is released.
Explanation: Photosynthesis is the process in which light energy is converted to chemical energy in the form of sugars. In a process driven by light energy, glucose molecules (or other sugars) are constructed from water and carbon dioxide, and oxygen is released as a byproduct. During the process of glycolysis in cellular respiration, glucose is oxidized to carbon dioxide and water. Energy released during the reaction is captured by the energy-carrying molecule ATP (adenosine triphosphate).
Drag the terms on the left to the appropriate blanks on the right to complete the sentences. not all terms will be used. this allows for______ from a single mrna before it is ________this is particularly important in______ since they ____their mrna bacteriaeukaryotes do not splice degraded multiple proteins to be synthesized one protein to be synthesized transferred protect do not protect spliced
Answers
This allows for multiple proteins to be synthesized from a single mRNA. before it is degraded. This is particularly important in bacteria since they do nor splice their mRNA.
Splicing is a basically a process of mRNA editing. This is basically a process by which introns, which are the the noncoding regions of genes, are excised from the primary messenger RNA transcript, and the exons which are the coding regions of the genes are joined together in order to generate a mature messenger RNA. This mature mRNA serves as the template for synthesis of a particular protein product.
Most of the bacterial RNA transcripts do not undergo any splicing or editing and we can say that these transcripts are said to be colinear with the DNA directly encoding them.
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Proof that a microbe could cause disease was provided by:.
Answers
How does a scientific theory differ from a scientific hypothesis? a. Theories are proposed to test scientific hypotheses. b. Theories are usually an explanation for a more general phenomenon; hypotheses typically address more specific issues. c. Hypotheses are usually an explanation for a more general phenomenon; theories typically address more specific issues. d. Confirmed theories become scientific laws; hypotheses become theories.
Answers
Scientific theories differ from scientific hypothesis as follows: confirmed theories become scientific laws; hypotheses become theories (option D).
What is a scientific theory?Scientific theories are coherent statements or set of ideas that explains observed facts or phenomena and correctly predicts new facts or phenomena not previously observed, or which sets out the laws and principles of something known or observed.
On the other hand, hypothesis is a tentative conjecture explaining an observation, phenomenon or scientific problem that can be tested by further observation, investigation and/or experimentation.
In summary, a theory is said to be a hypothesis confirmed by observation or experiment.
Therefore, a scientific theories differ from scientific hypothesis as follows: confirmed theories become scientific laws; hypotheses become theories.
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What parts of our bodies are made up only of muscles?
Answers
Hope this helps :)
name the part of alimentary canal that grinds lumps of food up and mixes it with saliva (without explanation)
Answers
Answer: Mouth or oral cavity
Explanation:
The alimentary canal is the long passage through which the food passes. It includes components like mouth, esophagus, stomach, intestines, and anus. It is supplied by digestive juices and secretions by other organs like liver, and pancreas which are not the part of the alimentary canal. Mouth or oral cavity or buccal cavity is the first component of the alimentary canal from where the food enters in the body. It is grinded and masticated by the teeth and mixed with the saliva so that it is converted into liquid form easily swallowed through the gut. The saliva is produced by the salivary amylase enzyme present in the mouth.
Introduction: The 19th century was the time of the Industrial Revolution in England. Most of the new
industries used coal for energy, and the air was polluted with black soot. In forests near factories, the soot
coated trees and killed lichens. As a result, tree trunks became darker.
Experiment: Click Play and hunt peppered moths on dark tree trunks for five years. In each year, try to
capture as many moths as you can.
many
Why did the changes you observed in the moth populations
happen?
Select all that apply.
0)individual moths changed colors
0)the best-hidden moths survived an reproduced
0)the moths that survived passed their colors to their offspring
0)the moths became tastier to their predators
Answers
Answer: Light colored peppered moths decreases in number and dark colored peppered moths increases.
Explanation: The population of light colored peppered moths decreases whereas the dark colored peppered moths increases in number because the light colored peppered moths are visible to the predator birds whereas the dark colored peppered moths are not visible due to dark coating of the trees so they are saved from the birds and therefore, increase in population of dark colored peppered moths occurs and decrease occur in light colored peppered moths population.
The internal systems of organisms and how materials circulate within organisms. Question 4 options: organ tissue Living System homeostasis
Answers
Answer:
Living System
Explanation:
Living system can be defined as the internal systems of organisms and how materials circulate within organisms.
Generally, these living systems are self-organized life forms and are known to be very much interactive with their surroundings or environment. Also, living systems are dependent on the flow of information, matter and energy at various levels.
Some examples of living systems in organisms are respiratory system, nervous system, digestive system, and circulatory system.
Additionally, living systems comprises of the following components; cells, organs, muscle, tissues, blood, etc.
Answer:
Living system is correct!
Explanation:
I took the test!
What feedback mechanisms help you regulate your body temperature?
Answers
Answer:
It would be negative feedback.
Explanation:
The reason negative feedback is the type of feedback mechanism that helps you regulate your body temperature is because it reduces excessive responses and keeps a variable within the normal range.
Choose the appropriate term for each labeled part of the image. Label A Label B Label C Label D
Answers
Answer:
Label A- ocean trench
Label B- ridge
Label C- ridge push
Label D- Convection Current
Explanation:
got it correct on edge. give thanks please. <3
Explanation:
Ocean Trench
Ridge
Ridge Push
Convection Current
dash is a flexible tissue which produces new blood cells inside the bone
Answers
Answer:
Marrow
Explanation:
The bone marrow, is a component of the lymphatic system, and is the soft flexible tissue in the cavities of bone.
Enzymes
How do catalyst enzymes affect chemical reactions?
Your answer
Answers
Answer:
They affect chemical reactions by lowering the activation energy, thus speeding up the reactions.
When you split a peanut seed or a lima bean in half, what is the name for the two big fleshy leaves that fill most of the seed? Also, what is the red papery covering on the seed of a peanut and the translucent skin on a lima bean? (check lecture outline PEANUT NOTE)
Answers
The two big fleshy leaves that fill most of the seed when you split a peanut seed or a lima bean in half are called cotyledons.
The red papery covering on the seed of a peanut is called the seed coat, while the translucent skin on a lima bean is called the seed coat or testa.
When you split a peanut seed or a lima bean in half, the two big fleshy leaves inside the seed are called cotyledons. The red papery covering on a peanut seed is the seed coat, and the translucent skin on a lima bean is the seed coat as well.
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if four of the original colonists died before they produced offspring, the ratios of genotypes could be quite different in the subsequent generations. this would be an example of
Answers
genetic drift. When the population size of a population is drastically decreased, a phenomenon known as the bottleneck effect occurs. Natural calamities (earthquakes, floods, storms and fires) can completely wipe out a population.
The frequency of alleles in a population is altered when a severe storm kills a large number of people at random. Genetic drift can be seen in all of these. People move and intermarry with people from other populations. Random occurrences can alter a population's allele frequencies, a process known as genetic drift. Small random changes in allele frequencies can have a large impact on the population as a whole, making small populations where this is most likely to happen.
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WHAT AM I?
BODY REGION RIDDLES
Date
1.
I am a body region. I'm inferior to the occipital region but superior to the glutteal region. I extend the entire
medial line on the dorsal side of the body. What am I?
Vertebral
2.
I am an organ. I am located deep within the trunk of the body. I'm medially located, but point laterally in the
direction of the left thoracic region. What am I?
3.
I am body region. I am located on the posterior side of the body on both of the lower limbs inferior to the
inguinal region. I am neither distal nor proximal. I am inferior to the femoral region but superior to the sural
region. What am I?
4.
I am another body region. I am located laterally on both sides of the body. I am located distally on the upper
limbs, but not completely so. I am inferior to the antebrachial region but superior to the digital or
phalangeal region. I am located on both the posterior and anterior sides of the body. What am I?
ba
. Now you need to come up with your own trivia question. (You will be graded on the accuracy of your
question!) You must choose a body region we've discussed in class and describe it as I have above. You
should have at least 5 components to your hint. For example, if you chose the frontal region and described it
as "superior to the nasal region," you would only be providing the reader with ONE hint. If this were your
trivia question you would need to include 4 additional hints!
** Make sure you write the ANSWER to your trivia question on the backside of this page, or I can't grade it
and lose all 10 pts! Also, "I am a body region..." cannot be one of your hints. That's a given!
Answers
The identification of the body parts is given below:
Sacral regionSpleenPopliteal regionForearm (or antecubital) regionWhat is the Sacral Region?The sacral region refers to the lower part of the spine that is inferior to the occipital region (at the back of the head) and superior to the glutteal region (the buttock). It extends along the entire median line on the dorsal (back) side of the body.
The spleen is an organ located deep within the trunk of the body, in the left upper quadrant of the abdomen. It is medially located but points laterally towards the left thoracic region. The spleen is involved in filtering the blood, producing red blood cells, and storing platelets.
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