To take the grime off a copper penny, mix:
a
Ob
baking soda & vinegar
baking soda & salt
salt & vinegar
salt & water
Od
Answers
Answer:
wowowooowwowowow ur welcom
Explanation:
eppepepepe ur welcome
Related Questions
Match the following.
1. bacteria and fungi that break down dead matter
decomposers
2. the basic relationships that show how a community of plants, animals, and bacteria live and grow and how these living things are dependent on each other as well as the Sun, soil, and other nonliving parts of their environment; a cycle of relationships
ecosystem
3. line of plants and animals that shows the order in which organisms are eaten
food web
4. a diagram that shows the connections among food chains in an ecosystem
tertiary consumer
5. organisms that eat producers
primary consumer
6. organisms that eat primary consumers
food chain
7. predator that eats secondary consumers
secondary consumer
Answers
Answer:
1. bacteria and fungi that break down
Decomposers
2. the basic relationships that show how a community of plants, animals, and bacteria live and grow and how these living things are dependent on each other as well as the Sun, soil, and other nonliving parts of their environment; a cycle
Ecosystem
3. line of plants and animals that shows the order in which organisms are eaten of relationships
Food chain
4. a diagram that shows the connections among food chains in an ecosystem
Food web
5. organisms that eat producers
Primary consumers
6. organisms that eat primary consumers
Secondary consumers
7. predator that eats secondary consumers
Tertairy Consumers
Consider a situation in which overharvesting causes the number of fish in a population to become drastically smaller, which causes genetic variation in that fish to decrease over a few generations. This is an example of: Group of answer choices
Answers
Answer:
bottleneck effect
Explanation:
Please help! how does a cell control gene expression through transcription?
A. by preventing the production of mrna molecules
B. by preventing mrna from binding to ribosomes
C. by preventing the binding of amino acids
D. by changing how a protein is folded
Answers
Answer: A. by preventing the production of mRNA molecules
Explanation:
In order to control gene expression through transcription, a cell can regulate the production of mRNA molecules. This control is achieved through various mechanisms:
1. Cells can produce transcription factors that bind to specific DNA sequences called promoter regions. These transcription factors can either enhance or inhibit the binding of RNA polymerase, the enzyme responsible for transcribing DNA into mRNA. By controlling the availability and activity of transcription factors, the cell can regulate the initiation of transcription and thus control which genes are expressed.
2. The DNA in the cell is packaged into a complex called chromatin, which consists of DNA wrapped around histone proteins. The cell can modify the structure of chromatin through processes such as DNA methylation and histone modifications. These modifications can either promote or inhibit the accessibility of DNA to transcriptional machinery, thereby influencing gene expression.
3. Cells can use small RNA molecules, such as microRNAs (miRNAs) and small interfering RNAs (siRNAs), to regulate gene expression at the transcriptional level. These small RNAs can bind to mRNA molecules and prevent their translation into proteins or promote their degradation, leading to reduced expression of the corresponding genes.
While options B, C, and D are involved in other stages of gene expression or protein synthesis, they are not directly related to controlling gene expression through transcription. Therefore, the most accurate answer is option A, by preventing the production of mRNA molecules.
1. Since the acronym for traits of the Plant Kingdom is "Early Melons Are Sour," one of the traits of a plant is:
a. it is capable of parasitism
b. it does not move from one place to another
it is always unicellular
d. it coevolved with a bumble bee
C.
Answers
just clarifying questions, how is there genetic variation from both parents in babies? does meiosis (for crossing over) occur before or after fertilization (egg and sperm combine to form zygote)? if its before, how is there combination of genes from both parents if crossing over (meiosis) doesnt occur after it gets chromosomes from parents ?
thank you!
Answers
Genetic variation in babies is the result of the combination of genetic material from both parents during sexual reproduction. During sexual reproduction, specialized cells called gametes (sperm in males and eggs in females) are produced through meiosis.
Meiosis is a type of cell division that reduces the number of chromosomes in half, producing gametes that contain only one set of chromosomes (haploid). During meiosis, the chromosomes can exchange genetic material through a process called crossing over, which creates new combinations of genes on the chromosomes.
Meiosis (including crossing over) occurs before fertilization. The sperm and egg produced through meiosis each carry a unique combination of genetic material, resulting in genetic variation in the offspring.
When the sperm and egg combine during fertilization, they create a zygote that contains genetic material from both parents, resulting in even more genetic variation in the offspring.
To learn more about meiosis:
https://brainly.com/question/7002092
#SPJ1
Imagine you are a pediatrician, with an new born baby with the following symptoms: within the first 3 days after birth she developed a number of distressing symptoms, including fever and lethargy. Your ordered a blood analysis and found ammonia level measured 860 µM (normal is 10-50 µM). More analysis revealed lower than normal plasma levels of citrulline, arginine, and urea. Blood dialysis was immediately begun to remove ammonia, and also intravenous administration of high levels of glucose. Her condition began to stabilize as time passed, and her carefully monitored diet always included arginine.
Based on your current knowledge of biochemistry, explain the likely metabolic defect causing this problem [which metabolic pathway/s are likely disrupted]. Include in your answer why ammonia levels would be high, while citrulline, arginine, and urea levels are too low. Before treatment, what effects would you predict from the high levels of NH3 on the level of α- ketoglutarate? Would the levels of any cofactors be affected? How about the production of ATP? Why was glucose given as part of the treatment? What sort of overall diet will you recommend to maintain health? Why should the diet be supplimented with arginine?
Answers
The newborn baby is likely suffering from a urea cycle disorder.
The most likely metabolic defect causing this problem is a deficiency of the enzyme argininosuccinate synthetase. In the urea cycle, this enzyme plays a key role in the conversion of citrulline to arginine. In this disorder, the ammonia levels would be high while citrulline, arginine, and urea levels would be too low.
Based on the high levels of ammonia before treatment, the levels of α-ketoglutarate would be low. The levels of co-factors would also be affected. There would be no production of ATP. Glucose was given as part of the treatment to provide energy and also to lower the level of ammonia. A low-protein diet supplemented with arginine should be recommended to maintain health. The diet should be supplemented with arginine to replace the missing arginine in the urea cycle.
Learn more about metabolic defect:
https://brainly.com/question/4750806
#SPJ11
how does direct sunlight affect an area
Answers
select all that apply select all of the following that have all of the characteristics of life. multiple select question. a breathing rabbit a bacterial cell the shed skin of a snake a membrane created in the lab
Answers
A breathing rabbit and a bacterial cell have all of the characteristics of life. The shed skin of a snake is no longer living, and a membrane created in the lab is not a living organism.
Based on your question, the options with all the characteristics of life are:
1. A breathing rabbit
2. A bacterial cell
The shed skin of a snake and a membrane created in the lab do not possess all the characteristics of life, such as growth, reproduction, and response to stimuli. The shed skin of a snake is no longer living, and a membrane created in the lab is not a living organism.
To know more about breathing visit:
https://brainly.com/question/26181478
#SPJ11
Examining a Michaelis-Menten enzyme system, what would the velocity be if (S] - 1/4 Km? a. 2/3 Vmax b. 1/4 Vmax c. 1/5 Vmax d. Vmax e. 1/2 Vmax
Answers
If the speed is 1/4 Km, then while examining a Michaelis-Menten enzyme system, the velocity would be Option b. 1/4 Vmax.
The Michaelis-Menten equation describes the relationship between the substrate concentration ([S]) and the velocity (V) of an enzyme-catalyzed reaction. The equation is as follows:
V = Vmax[S] / (Km + [S])
Where Vmax is the maximum velocity of the reaction and Km is the Michaelis constant.
If [S] = 1/4 Km, we can plug this value into the equation and solve for V:
V = Vmax(1/4 Km) / (Km + 1/4 Km)
V = Vmax / (4Km + 1Km)
V = Vmax / 5Km
V = 1/5 Vmax
However, this answer is not one of the options given. This is because the question has a typo and should actually read "[S] = 1/4 Km" instead of "[S] - 1/4 Km". With this correction, the equation becomes:
V = Vmax(1/4 Km) / (Km + 1/4 Km)
V = Vmax / (4Km + 4/4 Km)
V = Vmax / 5/4 Km
V = 4/5 Vmax
V = 1/4 Vmax
Therefore, the correct answer is b. 1/4 Vmax.
To know more about Michaelis-Menten equation, refer here:
https://brainly.com/question/30756012#
#SPJ11
Which statement is the best description of science?
Answers
Answer:
the systematic study of the structure and behavior of the physical and natural world through observation, experimentation, and the testing of theories against the evidence obtained
Explanation:
Explanation:
Science is the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence.
top 3 vitamins in chicken
Answers
Answer:
potassium, phosphorus and zinc.
Explanation:
1.I was invented in the 1960s.
2.I am well known for the light I produce.
3.My light is monochromatic and coherent.
4.It has high intensity and low divergence.
5.Because of these properties, It is used in cutters, DVD player and surgery.
So who am I?
Answers
Answer:
Laser
Explanation:
The properties and description given fits precisely that of a laser.
It was invented in May 1960 by Theodore Maiman.
LASER = Light Amplification by Stimulated Emission Radiation.
It a monochromatic and coherent lightLaser is used in cutters, DVD players and for performing surgeries. Some equipment also use laser to take certain measurements. They are distinguished by the lasing materials used to produce them.1. Stratified random sampling is a method of selecting a sample in which:
A. the sample is first divided into strata, and then random samples are taken from each stratum.
B. various strata are selected from the sample.
C. the population is first divided into strata, and then random samples are drawn from each stratum.
D. None of these alternatives is correct.
Answers
Stratified random sampling is a method of selecting a sample in the population is first divided into strata, and then random samples are drawn from each stratum. The option C is correct."
Stratified random sampling is a probability-based sampling method where a population is divided into strata and then elements are randomly selected from each stratum. The objective of stratified sampling is to increase the precision or accuracy of the sample by ensuring that each stratum has a larger homogeneous group of respondents.
If the population is too diverse, it may be difficult to represent it correctly without stratification. For example, if you are going to survey in a country with many different languages and dialects, it would be more effective to divide the population into different strata by language to obtain accurate results.
Learn more about stratified random sampling at https://brainly.com/question/29315928
#SPJ11
100 POINTS PLS HELP
Which of these statements best explains why the atmosphere of today was partly due to the interactions of spheres in the past?
Bacteria used nutrients in the soil for volcanic eruptions.
Chemicals released from water formed the atmosphere.
The molten Earth released hydrogen and helium into the atmosphere.
The increase in fertility of soil around the volcano helped produce rain.
Answers
Answer:
C. The molten Earth released hydrogen and helium into the atmosphere.
Explanation:
Today's atmosphere is that the molten Earth released hydrogen and helium into the atmosphere due to past sphere interactions.
What is origin of atmosphere?
The troposphere is our atmosphere's lowest layer. It begins at ground level and rises to about 10 km above sea level. We humans live in the troposphere, and nearly all weather happens here.
The origin of oxygen on Earth can be traced back to tiny organisms known as cyanobacteria or blue-green algae.
These microbes use photosynthesis to produce carbohydrates and, yes, oxygen by utilizing sunlight, water, and carbon dioxide.
The best explanation for today's atmosphere is that the molten Earth released hydrogen and helium into the atmosphere due to past sphere interactions.
Which is why the correct choice is C.
Plsss helpp 40 points!!
What do spores, seeds, cones, and flowers have in common?
Answers
how do hurricanes cause tornadoes?
Answers
Answer:
This is called wind shear, and it can induce a spinning movement in the air. At first this creates a spinning cylinder of air that is parallel to the surface. But as with any thunderstorm, the convective cells in a hurricane create strong updrafts. These can tilt the spinning air upright; a tornado is born.
1. What is the difference between Environmental Science and Environmental Engineering?
2. Why do we need to understand Environmental Science before studying Environmental Engineering?
3. Summarize and make a process flow diagram describing the Biogeochemical Cycles for the following: 4. Water Cycle, Carbon Cycle, Nitrogen Cycle, Sulfur Cycle, Phosphorus Cycle.
5. Explain how human beings are altering these biogeochemical cycles.
6. Define sustainability. How can you contribute to sustainable development with your awareness on the environment?
Answers
The difference between Environmental Science and Environmental Engineering: Environmental Science and Environmental Engineering are closely related disciplines with different focuses.
Environmental Science studies the natural environment and its interactions with living organisms, including humans. It is a field that is broad and interdisciplinary, geology, and physics. In contrast, Environmental Engineering is a more specialized field that focuses on the application of engineering principles to environmental problems.
The reason why we need to understand Environmental Science before studying Environmental Engineering: Environmental Engineering builds on the principles of Environmental Science and requires an understanding of the natural environment and the ways in which human activities impact it.
To know more about disciplines visit:
https://brainly.com/question/28325869
#SPJ11
why do you think people that are homozygous (tt) for the dominant allele have a much stronger bitter taste?
Answers
use the images and information from the article to selecte the TRUE statment
Answers
Explanation:
theres no picture in it
Which amino acid is the major carrier of nitrogen from non-hepatic tissue to the liver? answer using the capitalized one letter abbreviation of this molecule.
Answers
The amino acid that serves as the major carrier of nitrogen from non-hepatic tissue to the liver is represented by the capitalized one-letter abbreviation "A."
The transfer of nitrogen from non-hepatic tissues to the liver is an essential process in the body. The amino acid that predominantly carries nitrogen in this process is alanine, which is represented by the one-letter abbreviation "A."
Alanine is a non-essential amino acid that can be synthesized within the body. It plays a vital role in the glucose-alanine cycle, also known as the Cahill cycle. During periods of high energy demand or intense exercise, skeletal muscles break down amino acids to generate energy. The resulting nitrogen is transferred to the liver in the form of alanine.
In the liver, alanine is converted back into pyruvate, which can then enter the gluconeogenesis pathway to produce glucose. This newly synthesized glucose can be released into the bloodstream, providing energy to other tissues. The process allows the liver to dispose of excess nitrogen and contribute to glucose homeostasis.
Therefore, alanine serves as the major carrier of nitrogen from non-hepatic tissues to the liver, facilitating the efficient utilization of nitrogen and glucose metabolism in the body.
To learn more about amino acid visit:
brainly.com/question/31872499
#SPJ11
sequence read 3 was synthesized by sequencing which strand of dna? neither 5' --> 3' and 3' --> 5' strands 3' --> 5' strand both 5' --> 3' and 3' --> 5' strands 5' --> 3' strand
Answers
Sequence read 3 was synthesized by sequencing 5' --> 3' strand of DNA (Option D).
What is DNA sequencing?DNA sequencing is a technique used to find out the precise order of nucleotides (Adenine, Guanine, Cytosine, Thymine) in a DNA molecule. In other words, it is the method of decoding the DNA sequence. The determination of DNA sequence has numerous applications in various fields such as molecular biology, genetics, evolutionary biology, forensic science, medical diagnosis, and drug discovery.
In the case of DNA sequencing, the DNA molecule is synthesized in the 5' --> 3' direction. So, the DNA sequence is also written in the 5' --> 3' direction. Sequence read 3 (SR3) is one of the several DNA sequence reads obtained by the sequencing method. Sequence read 3 was synthesized by sequencing the 5' --> 3' strand of DNA.
Therefore, the correct option is 5' --> 3' strand (Option D).
Learn more about DNA sequencing: https://brainly.com/question/30590319
#SPJ11
How does fever indicate that your body's immune system is doing its job?
Fever increases red blood cell production.
Fever raises the body's temperature to destroy harmful substances.
Fever triggers inflammation.
Fever causes the secretion of hormones that fight harmful substances.
Answers
Fever usually helps to signify that our body's immune system is doing its job simply by:
Fever raises the body's temperature to destroy harmful substances.
The correct answer choice is option b
How fever raises the body's temperature to destroy harmful substances.Sometimes, our body system betrays us by allowing harmful pathogenic or infectious organisms into our body's immune system, when this happens, it leads to the manifestations of signs of certain health conditions such as fever.
That being said, one of the surest ways fever helps the immune system is to fight health condition by increasing our body's temperature.
So therefore, it can be accurately deduced that the body's immune system have special ways to fighting infectious agents.
Read more on fever:
https://brainly.com/question/13651003
#SPJ1
Answer:
b
Explanation:
fever increases red blood cell production
The first couple of questions are to check your understanding before you begin the experiment. Sugar or salt will dissolve more easily in ____ water.
freezing
hot
Cold
Answers
Answer:
Hot water
Explanation:
I tested it...
Which of the following is true about chemical reactions?
A) Chemical reactions can create products (outputs) that are more complex than the reactants (inputs)
B) Chemical reactions involve changes in the energies of the molecules involved in the reaction
C) Organisms take in the matter and rearrange those atoms during chemical reactions.
D)Both A and B
E)All the Above
Answers
chemical reactions involve changes in the energies of the molecules involved in the reaction
During a chemical reaction, bonds are formed or breaked to make new products which may complex than the reactants. Energy changes can be happened in a reaction during rearrangement of atoms. Thus, all of the statements are correct.
What is a chemical reaction?
A chemical reaction is a chemical change occuring for matter where the atoms are regrouped into new products through bond making or bond breaking or both.
The change in energy during a reaction is called enthalpy change, where each reactant is associated with a standard energy and the energy may change with temperature or other external factor.
There may more than two reactants and some reactions are completing through several stages and may lead to complex products which are having entirely different properties from the reactants. Therefore, all the given statements about chemical reactions are correct.
To find more on chemical reactions, refer here:
https://brainly.com/question/29039149
#SPJ3
The synthesis of calcitriol, a steroid hormone secreted by the kidney, is dependent on the availability of a related steroid called cholecalciferol (vitamin D3), which may be synthesized in the skin or absorbed from the diet.
a. True
b. False
Answers
Answer:
True.
Explanation:
Vitamin D is a fat soluble vitamin that is responsible for fostering the absorption of calcium, magnesium and phosphate in the body.
The synthesis of calciferol is dependent on the availability of a related steroid called cholecalciferol (vitamin D3), which may be synthesized in the skin or absorbed from the diet because keratinocytes of the epidermis and fibroblasts of the skin is response for producing vitamin D3(calciferol) by absorbing it from ultraviolet light when during exposure to UV B photons which protolyses provitamin D3 to pre vitamin D3 in the human body.
It can also be gotten from food sources like milk, cheese, cereals, liver,meat e.t.c.
Question: A rat approaches a piece of rotting fruit, takes a small bite, and runs away. Which statement best explains the reason for the rat’s behavior?
A. The rat runs away to process the sensory information.
B. Sensory receptors in the rat’s whiskers respond to the input about the texture of the fruit.
C. Information gathered by the rat’s auditory receptors signals that the environment around the fruit is not safe.
I will mark brainiest if your response has scientific reasoning and accurate, I believe I have the answer, yet I want to double-check. Thank you!
Answers
Hope it helps
when two species compete for resources, the fitness of
Answers
When two species compete for resources, (b) both species will decline in fitness. This is because competition takes up energy and resources that could otherwise be used for reproduction and survival.
The better competitor may be able to survive and reproduce more successfully than the poorer competitor, but both species will be less fit than they would be if they did not compete.
Competition for resources is a zero-sum game. This means that one species' gain in resources comes at the expense of the other species' loss of resources. As a result, both species will have to expend more energy and resources to compete, which will leave them less energy and resources for reproduction and survival. This will lead to a decline in the fitness of both species.
The decline in fitness may be more pronounced in the poorer competitor, but both species will be less fit than they would be if they did not compete. For example, two species of birds competing for the same food source may have to spend more time and energy searching for food, which will leave them less time and energy for reproduction and survival. This will lead to a decline in the fitness of both species, even if the better competitor is able to survive and reproduce more successfully.
In some cases, competition for resources can lead to the extinction of one or both species. For example, two species of bacteria competing for the same antibiotic may become resistant to the antibiotic, which will make them more difficult to treat. If one of the species is unable to develop resistance, it may become extinct.
Overall, competition for resources is a negative interaction that can lead to a decline in the fitness of both species involved.
Therefore, (b) both species will decline is the correct answer.
To know more about Competition refer here :
https://brainly.com/question/9428741#
#SPJ11
Complete question :
When two species compete for resources, the fitness of:
(a) both competitors will remain the same.
(b) both species will decline.
(c) only the poor competitor will decrease.
(d) only the better competitor will increase.
which of the following most likely explains how the chromosomes circled in figure 1 could cause a genetic disorder in the person from whom the cells were obtained?
Answers
Chromosomal abnormalities may include changes in chromosome number, structure, or arrangement, which can disrupt the proper functioning of genes and ultimately lead to health problems.
Genetic disorders can be caused by abnormalities in an individual's chromosomes. One possible explanation for a genetic disorder in a person is a numerical abnormality, where an individual has an atypical number of chromosomes. A common example is Down syndrome, caused by an extra copy of chromosome 21. This results in a total of three copies instead of the usual two, leading to the characteristic features of the disorder.
Another explanation is a structural abnormality, which occurs when the shape or arrangement of a chromosome is altered. This may involve deletions, duplications, inversions, or translocations of chromosomal segments. These changes can disrupt the function of genes at the affected sites and sometimes lead to genetic disorders like Cri-du-Chat syndrome or Prader-Willi syndrome.
Thus, chromosomal abnormalities can cause genetic disorders by altering the normal function of genes. Numerical and structural abnormalities can both disrupt gene function and lead to health problems in the affected individual.
Learn more about chromosomes here:
https://brainly.com/question/28265947
#SPJ11
in passive transport molecules move from _____ concentration to______ concentration
help please .. fill in blanks question
Answers
Answer:
High to low concentration
Explanation:
Explain how DNA fragments are separated by gel electrophoresis
Answers
Gel electrophoresis is a widely used technique in molecular biology that allows for the separation of DNA fragments based on their size and charge.
The process involves several steps:
Preparation of the gel: A gel matrix, usually made of agarose or polyacrylamide, is prepared and poured into a gel tray. Small wells are created at one end of the gel, which will hold the DNA samples.
Loading the samples: DNA samples, which have been treated with restriction enzymes to generate fragments of different sizes, are loaded into the wells of the gel.
Applying an electric field: The gel tray is immersed in a buffer solution, and an electric field is applied across the gel. One end of the gel serves as the positive electrode (anode), and the other end as the negative electrode (cathode).
Migration of DNA fragments: When the electric field is applied, negatively charged DNA fragments migrate through the gel towards the positive electrode. Smaller fragments move more quickly through the gel matrix, while larger fragments move more slowly.
Visualization of DNA bands: After the electrophoresis is complete, the DNA fragments are visualized using stains or fluorescent dyes. The bands formed on the gel represent the separated DNA fragments, with each band corresponding to a specific size.
By analyzing the position and intensity of the DNA bands, researchers can determine the size of DNA fragments and gain insights into various genetic phenomena, such as gene mapping, DNA sequencing, and genetic variation analysis.
Know more about Gel electrophoresis here:
https://brainly.com/question/6885687
#SPJ8