The mass of the sample will affect the temperature change. The larger the mass of the sample, the more heat energy will be required to raise its temperature by a certain amount.
Since the same amount of hot water is added to both samples, the smaller sample of 50 grams will require less heat energy to raise its temperature than the larger sample of 100 grams. Therefore, the temperature change in the 50-gram sample is expected to be greater than the temperature change in the 100-gram sample.
According to my hypothesis, the larger sample of 100 grams will experience a smaller temperature change compared to the smaller sample of 50 grams when the same amount of hot water is added to both samples because a larger mass of water requires more energy to increase its temperature than a smaller mass of water.
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What would eventually happen to a cell left in a hypotonic solution?
a. The cell would not change
b. The cell would shrink and shrivel
C. The cell would get bigger and eventually explode
Answer: C. The cell would get bigger and eventually explode :) hope this helps
Answer:
I am pretty sure its C
Explanation:
the cell get bigger and explodes
What is a controlled variable in an experiment?
a
b
A factor that is purposely left the same.
A factor that is purposely changed and being measured.
A factor that will be observed and measured.
A factor that is purposely being changed.
С
d A factor that is purposely being changed
Answer:
A factor that is purposely left the same.
Explanation:
A controlled variable should not be changed throughout an experiment or else it will affect the outcome of each individual trial.
(02.07 MC)
The table below shows population data for a particular country in 2010:
Population (millions) 40.5
Births (per 1,000)
30
Deaths (per 1,000) 3
Total Fertility Rate 3.3
Infant Mortality Rate
(per 1,000 births)
Which of the following would explain why the total fertility rate is 3.8 five years later?
2
O A governmental policy to ensure replacement-level fertility remains constant even though there is no change in death rate.
Females are being given fewer educational opportunities so there is a reluctance to have children.
Couples are able to settle down at younger ages and quality of life has improved in the nation.
O The birth rate is determined to be 28 births for every 1,000 individuals five years later.
Option D seems to provide the most information about the total fertility rate, which is 3.8 five years later.
Why does fertility decline over time?A variety of factors contribute to the decline in fertility rates. One of the factors is primarily due to job changes, reproductive health issues, and other factors.
Thus, the answer is option D is the mathematical option that best explains the total fertility rate of 3.8 five years later.
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How does variation contribute to evolution?
A. Variation changes an organism over time, allowing them to evolve slowly as they grow.
B. Variation does not contribute to evolution.
C. Variation causes changes in the DNA, some of which are passed on, changing the species slightly each generation.
D. Variation produces a great variety of advantages for natural selection to select, through the process of Mitosis.
Answer:
I think its A
Explanation:
Variation usually results in changes in the DNA which are passed on the future generation and changing the species slightly each generation. The correct option is C.
What is variation?The disparity in the character traits of organisms in a population is referred to as variation.
Different traits can be introduced into an organism by genetic variations that alter gene activity or protein function.
Thus, the correct option is C.
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Question Image
what macromolecule is shown above
Answer: I just copied the person next to me
Explanation:
Ocean fertilization refers to: the growth of agriculture in the ocean. the growth of fish to create a larger carbon sink a geo-engineering idea where nutrients or "fertilizer" are added to the ocean t
Ocean fertilization refers to a geoengineering idea where nutrients or "fertilizer" are intentionally added to the ocean to stimulate the growth of phytoplankton and enhance carbon dioxide absorption, the correct option is C.
Phytoplankton plays a crucial role in the Earth's carbon cycle as they absorb carbon dioxide from the atmosphere through photosynthesis. By promoting their growth, it is believed that larger amounts of carbon dioxide can be absorbed and subsequently stored in the deep ocean, acting as a potential carbon sink.
The process of ocean fertilization typically involves introducing iron, nitrogen, or other essential nutrients into specific areas of the ocean that are considered to be nutrient-limited. The expectation is that these nutrients will stimulate phytoplankton growth, leading to increased carbon dioxide uptake through photosynthesis.
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The correct question is:
Ocean fertilization refers to:
A) the growth of agriculture in the ocean
B) the growth of fish to create a larger carbon sink
C) a geoengineering idea where nutrients or "fertilizer" are added to the ocean to stimulate the growth of phytoplankton and enhance carbon dioxide absorption.
4. When and where does anaerobic respiration occur in humans?
Answer:
Anaerobic respiration in humans occurs primarily in muscle cells during high-intensity exercise.
Explanation:
This might occur if you're pushing your limits during an aerobic activity, like spinning or a cardio workout, and the oxygen supply to your muscles is insufficient to maintain aerobic-only respiration
The ________ River in Europe was once heavily contaminated by waste disposal, dumping, runoff, and a spill from a chemical warehouse fire in Switzerland. It now hosts a healthy population of flora and fauna.
The Rhine River in Europe was once heavily contaminated by waste disposal, dumping, runoff, and a spill from a chemical warehouse fire in Switzerland. It now hosts a healthy population of flora and fauna.
The pollution caused significant damage to the river's ecosystem, including the death of fish and other aquatic life. However, efforts to clean up the river and reduce pollution have been successful, and it now hosts a healthy population of flora and fauna.
The Rhine Action Programme, which was launched in 1987, has been instrumental in the river's recovery. It brought together countries along the Rhine to coordinate efforts to reduce pollution and restore the river's ecosystem. Today, the Rhine is one of the cleanest rivers in Europe and a valuable resource for drinking water, agriculture, and recreation.
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The pulmonary circulation carries blood between the heart and ______
Answer:
lungs
Explanation:
Pulmonary circulation moves blood between the heart and the lungs. It transports deoxygenated blood to the lungs to absorb oxygen and release carbon dioxide. The oxygenated blood then flows back to the heart. Systemic circulation moves blood between the heart and the rest of the body.
Describe and explain what will happen in the body to regulate the amount of glucose in the blood after a person has not eaten for several hours.
Answer:
See the answer below
Explanation:
The amount of glucose in the blood is regulated by the negative feedback mechanism.
When the glucose level in the blood increased beyond the normal level, the pancreas secretes insulin which converts the excess glucose to glycogen. Glycogen is stored in the liver and the muscles.
When a person has not eaten for a while and the glcose level drops beyond normal, glycogen is converted back to glucose and released into the blood by another enzyme produced by the pancreas, glucagon.
Which type of molecular model is represented in this image?
O=C=0
A. dot diagram
B. space-filling model
C. structural formula
D. ball-and-stick model
Answer:
C. structural formula
Explanation:
thats the structural formula for carbon dioxide C2O
As depth increases in the Geosphere, so does_______
Answer:
temperature and pressure
Explanation:
i had a quiz on it
Answer:
Temperature and Pressure
Explanation:
:)
Democracy And human rights
Answer:
Democracy is one of the universal core values and principles of the United Nations. Respect for human rights and fundamental freedoms and the principle of holding periodic and genuine elections by universal suffrage are essential elements of democracy.
Explanation:
Which of these causes evolution?
A. Random mating
B. Natural selection
C. No mating at all
D. Extremely large population sizes
Natural selection causes evolution. The correct option is B.
What is natural selection?Natural selection refers to the process that leads to the adaptation of organisms to their environment.
Natural selection forces either select for or against traits. Traits that aid organisms in adapting are selected for, while those that do not aid in adaptation are selected against.
Traits that are selected for are allowed to perpetuate in the population while those that are selected against gradually fade from the population.
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Where is the coldest place on Earth ? O A. Arctic Circle B. Siberia C. Antarctica d. north pole
Answer:
Antarctica is the coldest place on the earth.
Answer: C
Explanation:
QUESTION 1 Exercise 11.10. Butterflies. Alice, Bob, and Charlotte are looking for butterflies. They look in three separate parts of a field, so that their probabilities of success do not affect each other. • Alice finds 1 butterfly with probability 17%, and otherwise does not find one • Bob finds 1 butterfly with probability 25%, and otherwise does not find one • Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one Let X be the number of butterflies that they find altogether. Write X as the sum of three indicator random variables, X1, X2, X3 that indicate whether Alice, Bob, Charlotte (respectively) found a butterfly. Then X= X1+X2 +X3. Find the expected value of X by finding the expected value of the sum of the indicator random variables. Your answer will have two decimal places. **This is a straight forward expected value of a sum of random variables, nothing fancy here! QUESTION 2 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? O A. Example 11.10, sampling without replacement O B. Example 11.11, sampling with replacement QUESTION 3 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. What is the expected value of getting the first head? This will be an integer answer. QUESTION 4 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The next step is to find the expected value of getting the second head. Because this is identical to finding the expected number of rolls for the first head (independent events), we just multiply the first head's expected value by 2. This will be an integer answer. QUESTION 5 Exercise 11.17 (a). Waiting for favorite song. Michael puts his iTunes on shuffle mode where songs are not allowed to be replayed. He has 2,781 songs saved on iTunes, and exactly one of these is his favorite. How many songs is he expected to have to listen to until his very favorite song comes up? Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? A. Example 11.11, sampling with replacement B. Example 11.10, sampling without replacement
In Exercise 11.10, the expected value of the number of butterflies found by Alice, Bob, and Charlotte is obtained by finding the expected value of the sum of three indicator random variables.
In Exercise 11.16, the expected value of the number of flips needed to get the second head in a coin flipping experiment is determined. These exercises involve different scenarios of sampling with and without replacement.
In Exercise 11.10, the expected value of X, the total number of butterflies found, is found by calculating the expected value of each indicator random variable (X1, X2, X3) representing whether Alice, Bob, and Charlotte found a butterfly, respectively.
The expected value of each indicator variable can be obtained by multiplying the probability of success (finding a butterfly) by 1 and the probability of failure (not finding a butterfly) by 0. Then, the expected value of X is calculated as the sum of the expected values of the indicator variables.
In Exercise 11.16, the expected value of X, the number of flips needed to get the second head, is determined. To find this value, we first need to find the expected value of getting the first head. This scenario is similar to Example 11.11, which involves sampling with replacement.
Each coin flip is an independent event, and the probability of getting a head is constant at 0.5.
Therefore, the expected value of getting the first head is 1/p, where p is the probability of success (0.5 in this case).
In Exercise 11.17 (a), the scenario of waiting for a favorite song in Michael's iTunes playlist involves sampling without replacement. Each song played is not replayed, and there is only one favorite song among the total number of songs.
Therefore, this scenario is similar to Example 11.10, sampling without replacement.
To find the expected number of songs Michael needs to listen to until his favorite song comes up, the formula for sampling without replacement is used, which is the reciprocal of the probability of selecting the favorite song at each step.
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Over 1 million species of animals have been named and described by biologists. These species arose __________. View Available Hint(s) Over 1 million species of animals have been named and described by biologists. These species arose __________. before the Cambrian explosion through years of evolution as natural selection shaped animal adaptations to Earth's environments from island-bound populations of individuals as a result of evolution from a common fungal ancestor
Answer:
through years of evolution as natural selection shaped animal adaptations to Earth's environments.
Explanation:
Over the years, biologists have been able to successfully name more than one (1) million animal species across the world. These species arose through years of evolution as natural selection shaped animal adaptations to Earth's environments.
Natural selection can be defined as a biological process in which species of living organisms having certain traits that enable them to adapt to environmental factors such as predators, competition for food, climate change, sex mates, etc., tend to survive and reproduce, as well as passing on their genes to subsequent generations.
Simply stated, natural selection entails the survival of the fittest. Therefore, the species that are able to adapt to the environment will increase in number while the ones who can't adapt will die and go into extinction.
which process can be described as a four-step process for producing atp from glucose?
The process that can be described as a four-step process for producing ATP from glucose is known as cellular respiration.
It includes four stages: glycolysis, the Krebs cycle, electron transport chain, and oxidative phosphorylation.
During glycolysis, glucose is broken down into two molecules of pyruvate. The Krebs cycle then takes the pyruvate and converts it into energy-rich molecules called NADH and FADH2. In the electron transport chain, these energy-rich molecules are used to produce ATP.
Finally, in oxidative phosphorylation, ATP is produced by using the energy from the electron transport chain. This process is crucial for cellular energy production and is essential for all living organisms.
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Describe the characteristics and significance of the carbon atom ( organic chemistry )
Answer:
Carbon has an exceptional ability to bind with a wide variety of other elements. Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen.
Explanation:
Carbon has an exceptional ability to bind with a wide variety of other elements. Carbon makes four electrons available to form covalent chemical bonds, allowing carbon atoms to form multiple stable bonds with other small atoms, including hydrogen, oxygen, and nitrogen.
1. Make a table to summarize the contributions
made to the cell theory by Robert Hooke,
Matthias Schleiden, Theodor Schwann, and
Rudolf Virchow.
Robert Hooke spotted some "pores" or "cells" when he used his microscope to examine a piece of cork. Hooke thought the cork tree's once-living "noble fluids" or "fibrous threads" had been stored inside the cells.
What is cell theory?Cell theory is defined as cells are believed to be the primary building blocks of all living tissues according to a basic biological scientific hypothesis.
According to the cell hypothesis, which was first advanced in 1839 by Matthias Jakob Schleiden and Theodor Schwann, every organism is made up of one or more cells. Cells are also the fundamental unit of structure and function in all living organisms, all cells are derived from preexisting cells, and all cells contain the hereditary.
Rudolf Virchow established the field of cellular pathology, or the study of disease at the cellular level, by proposing the hypothesis that all cells develop from pre-existing cells.
Thus, the cell theory given be the different scientist is that the cell is the fundamental unit of life.
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Which of these statements about cell division is true?
A. Cells divide at random times
B. The phases of cell division can occur in any order
C. New cells formed by cell division can replace dying cells in an organism
D. A newly formed daughter cell has less DNA than its parent cell
Answer:
its gonna be D
Explanation:
It can't be A, since cells only divide once they are past interphase
It can't be B, becuase cell division does have an order
It can't be C, becuase a dying cell is still a functioning one
And it is D becuase daughter cells are haploid, while parent cells are diploid
Answer:
C. New cells formed by cell division can replace dying cells in an organism.
Explanation:
I majored in Biology
During a schoolyard survey, students observe a litter of baby rabbits with brown and white offspring. Explain how it is possible for two brown furred rabbits to have a white furred offspring. Use evidence to support your answer.
Answer:
Its a recessive gene
Explanation:
It was passed down by their grandparents, or great grandparents
Darwin also observed fossil shells of marine organisms high up in the Andes mountains, and saw an earthquake move land that was underwater above sea level. How did he apply these insights to the evolution of organisms?
Answer:
Geological events can cause drastic changes over long periods of times
Explanation:
He used these insights and stated that Geological events can cause drastic changes over long periods of time. Such changes can cause entire species to become extinct or cause drastic evolutionary physical changes to other species. This is because the environment changes and the animals living in these environments need to adapt in order to be able to survive. Some changes such as continental drift can even move species to different parts of the world where the climate is drastically different.
Acetic acid, a compound found in vinegar, reacts with baking soda to produce carbon dioxide, water, and sodium acetate. Without writing an equation, identify the reactants and the products of this reaction.
Explanation:
Reactants: Acetic acid, baking soda
Products: Carbon dioxide, water, sodium acetate
PLZ HELP!! ASAP!!
Carbohydrates have chemical bonds that are a good source of energy for living things. A monosaccharide is a carbohydrate made by plants when energy from the sun combines water and carbon dioxide.
How are the two other types of carbohydrates formed? Give examples of each type.
Explanation:
The other two types of carbohydrates, disaccharides and polysaccharides, are formed when monosaccharides link together to form larger molecules and chains. A disaccharide is a sugar that is made from two monosaccharides (di=two). For example, sucrose is a disaccharide that is made from the bonding of glucose with fructose, which are both monosaccharides. Sucrose is known as table sugar, and is found naturally in plants. Polysaccharides are large, complex molecules that are formed when monosaccharides or disaccharides link together in repeating units to form long chains. The most abundant polysaccharide in the world is cellulose, the substance that makes up the cell wall of plant cells. Starches are also examples of polysaccharides, and these are stored in plants such as grains, corn and wheat.
All living organisms must obtain energy in order to survive, and most organisms rely on carbohydrates as energy sources. These molecules are made through the process of photosynthesis, and they store the sun's energy within them.
The introduction of certain animals from Europe, especially horses, had a positive effect on some American Indian communities. However, European cattle and other livestock sometimes caused more harm than good. In some cases, livestock entered the unfenced fields of American Indian farmers, eating and trampling their crops. Unlike European farmers, many American Indian farmers had never learned how to fence in their fields because it had never been necessary. The American Indians in the Spanish colony of New Spain in Central and North America experienced this problem. Antonio de Mendoza, the first viceroy of New Spain, wrote these words to the Spanish king in the 1530s: May your Lordship realize that if cattle are allowed, the Indians will be destroyed. How could the Spanish have helped American Indians adapt to the new species of livestock?
Answer:
Explanation:
To reduce the incidents of destruction of field by this animals the Spanish could have helped adapt by taming the animals, the animals can be kept in a ranch where they would be controlled to prevent them from entering fields.
The American India could be enlighten through orientation about how to keep their farms save from invasion by this pest animals.
The India should be enlighten about the animal and its mode of operation and how to prevent the entry of this animal pest into their field. This will help them adapt to animal.
With this the India would be able to feel loved and start adapting to the new changes.
Answer:
The Spanish colonists could have helped the American Indians adapt to the new species of livestock by teaching them to fence their fields to protect their crops. Furthermore, they could have taught American Indians how to use livestock for food, trade, and labor.
Explanation:
From admentum
The more classification levels that two organisms share,
A) Group of answer choices
B) The easier it is to tell them apart
C) The more directly related they are
D) They closer together on Earth they live
The more twins they are
Answer:A or the more twins they are
Explanation:
Based on what you know about enzymes' optima, which of the following can be expected? CHOOSE ALL THAT APPLYA. Human enzymes would work best at 37°CB. Human enzymes would work well in thermophilic microorganisms which live in hot springs (70°C)C. Human intestinal enzymes will work best in the intestine and stomachD. Human amylase present in saliva will stop working in the stomachE. Human stomach enzymes would stop working when exposed to pH=12
Human amylase present in saliva will stop working in the stomach so the correct option is D
Human amylase is an enzyme produced in the pancreas and salivary glands that plays a critical part in digestion. It helps break down complex carbohydrates similar as beans into simpler motes similar as maltose, which can also be absorbed by the small intestine. Amylase is also important for the digestion of salutary fiber.
Without amylase, the body would be unfit to reuse and absorb the nutrients it needs. Amylase is set up in slaver and is one of the first way in the digestive process. It begins breaking down beans as soon as they enter the mouth.
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Which option gives an accurate reason why ethical guidelines are needed for the way scientific information is communicated?
(Select all that apply)
Businesses can perform and fund research studies, which potentially creates bias.
Scientific journals have a long history of publishing questionable research.
Government funding of research studies has the potential to create bias.
Poor research could potentially impact the health and welfare of the public.
Answer:
Poor research could potentially impact the health and welfare of the public.
Explanation:
Scientific studies are generally believed to be based on thorough research. This implies that members of the public always trust scientific publications and rely on same as a source of accurate and trustworthy information.
Science, being empirical in nature is believed to eliminate bias in its research and reportage of studies. Scientific research publications is often a source of information for field practitioners in diverse disciplines as well as the general public.
Poor research will mislead a large section of the public, both professionals in that field as well as laymen. This poor research could potentially impact the health and well being of members of the public negatively because they may be led to believe false information which can be disastrous. This is the reason why ethical guidelines are needed for the way scientific information is communicated.
How do you pronounce the full scientific name of DDT?