Answer:
The correct statement is-
They used Chargaff's rule to determine that it contains ribose sugar.
They used Franklin's photo to determine that DNA was a double helix.
Explanation:
Watson and Crick used pieces of information available from different researchers such as Chargaff's rules and Franklin.
Chargaff had explained that of the four kinds of nucleotides are present in a DNA molecule in such a manner that 2 types of nucleotides were always present in the same amounts and the other 2 types of nucleotides were also always present in same amounts.
The first X-ray picture of DNA, created by Rosalind Franklin using a technique known as X-ray crystallography, which led to Watson and Crick's model of DNA. It explained the helical shape of the DNA molecule.
The correct statement is-
They used Chargaff's rule to determine that it contains ribose sugar.
They used Franklin's photo to determine that DNA was a double helix.
Answer:
They used Franklin's photo to determine that DNA was a double helix.
Explanation:
Which energy source uses heat from underground?
O A. Nuclear
O B. Geothermal
O C. Solar
O D. Hydroelectric
Answer:
The answer is geothermal (b)
The correct answer is B. Geothermal.
This is true because geo relates to the earth and thermal relates to heat.
When you put those two words together, it means heat from the earth.
A is incorrect since the energy sources comes from the fission or splitting of atoms.
C is incorrect since solar energy relates to heat or energy from the sun.
D is incorrect since hydro means water and therefore hydroelectricity is an energy source that is made from water.
1
2
3
6
8
Which is developed during the process of technological design?
solution
experiment
conclusion
summary
During the technological design process, you would develop a solution
Which of the following statements about energy producing technologies is true? a. Some currently used energy producing technologies have no disadvantages. b. Alternatives to nonrenewable energy sources can be as effective. c. Air pollution is common to all energy producing technologies. d. Alternatives to nonrenewable energy sources are typically more damaging to the environment. Please select the best answer from the choices provided A B C D
Answer:
b. Alternatives to nonrenewable energy sources can be as effective.
Explanation:
Sources of energy can either be renewable or nonrenewable. Nonrenewable sources of energy e.g petroleum, coal etc are those that are used faster than can be replenished. They tend to release pollution into the environment.
On the other hand, renewable sources of energy has been employed in order to reduce the debilitating effect caused by the nonrenewable sources. Renewable sources of energy, which include solar, wind etc are being technologically used to produce energy. They have proven effective in the sense that they generate energy in an eco-friendly manner. This is the reason they are called Green or clean energy.
Renewable sources are found to be effective and eco-friendly alternatives to the nonrenewable sources.
Answer:
b. Alternatives to nonrenewable energy sources can be as effective.
Geologists might study everything except for a. the moon. b. fossils. c. minerals. d. hurricanes.
Geologists are trained professionals that might study everything except for the moon (Option a).
Who are Geologists?Geologists are professionals who study the features of rocks and fossils that formed during natural processes.
Geologists also study the periods of time in which these fossils can have appeared on the Earth.
In conclusion, geologists are trained professionals that might study everything except for the moon (Option a).
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2. Where could you access research material or other
information that would help inform you understanding
about the importance of identifying biological molecules
and how each of the tests work?
Answer:
ljfkrejdmnc bdkcbkjdbjckbdkj idbb b b b
Explanation:
Biological molecules are involved in the process of life. The research material that enables understanding of the biological molecules and their analysis can be accessed from library databases and research tools.
What are biological molecules?Biological molecules have been defined by the organic and inorganic compounds that are present and function in the living cell. They are considered the fundamental unit of life that consists of "carbon, oxygen, hydrogen, sulfur, and nitrogen molecules".
The online research tools and library databases of various research universities are the best places where one can access the research materials and information that allows the understanding of the importance of the biological molecules and the tests used to identify them.
Therefore, libraries and databases are used to get research information.
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5. Plant cell has a cell wall made of:
(a) Protein
(b) Fructose
(c) Cellulose
(d) Fatty acids
6. The cell organelle that helps in respiration of the cell
is :
(a) Mitochondria (b) Lysosome
(c) Ribosome
(d) Centrosome
Answer:
5. c) cellulose
6. a) mitochondria
Explanation:
5. Plant cell walls are mainly made of cellulose.
6. Cell respiration is the process where cells convert sugar into energy. The mitochondria is the powerhouse of the cell and is responsible for converting sugars into energy for the cell.
Answer:
5. (c) Cellulose
6. (a) Mitochondria
Explanation:
The second of the two "undeniable facts" is that individuals in a population of any species vary in many heritable traits (traits passed from parents to offspring), so that no two individuals are exactly alike. This fact is important to understanding evolution because it means that
16. During the signal transduction process, the signal often triggers a signal transduction cascade. For example, a single activated receptor can activate hundreds of protein A molecules. Each activated protein A molecule activates hundreds of protein B molecules, and so on, until a cellular response occurs. What purpose does this cascade serve
Answer:
The cascade amplifies the signal.
Explanation:
The purpose of the cascade is to transmit a signal to other components in the shortest time possible and do it massively, so when a receptor is activated, this affects a high number of receptors. By doing a cascade reaction, the information travels very fast, achieving the objective quickly, and without a significant loss of energy, in other words, is an efficient method.
2. In what way does an enzyme affect the reaction it catalyzes? How does the enzyme produce this effect?
Answer:
it either speeds it up
Explanation:
by breaking down the molecules until there are very tiny I guess
How does the cell wall protect a plant cell? A) The cell wall protect the cell by providing support and maintaining the cell's shape. B) The cell wall protects the cell by storing food so the plant doesn't run out. C) The cell wall is thin and flexible, which allows the cell to be moved without harming the organelles. D) The cell wall is on inside of the cell and serves to contain the contents of the cell.
Answer: the cell wall protects the cell by providing support and maintaining the cells shape
Explanation:
The cell wall protects the cell by providing support and maintaining the cell's shape.
CELL WALL:
The cell wall is a structure found in certain cells like plant cells, Bacteria cell etc. The cell wall is located outside the cell and bounds the cell content. The cell wall of plants majorly contain a polysaccharide called cellulose. The cellulose content of plants cell wall is responsible for its protective function by giving the cell a rigid shape. The plant cell wall helps protect the plant cell by providing support and maintaining the cell's shape.Learn more at: https://brainly.com/question/11898425?referrer=searchResults
3) Two students decided to repeat the Hershey and Chase experiment, with modifications for a science competition. They radioactively tag the nitrogen of the DNA, rather than the phosphate. Each nucleotide has only one phosphate and two to five nitrogen atoms, the strategy of labeling the nitrogen atoms would detect a stronger signal than labeling the phosphates. Why won't this approach work
Answer:
Explanation:
In the Hershey and Chase experiment, they aimed to show where the phage DNA went when it exited the protein coat and entered the bacteria. In this scenario, the two student's approach won't work because amino acids (and therefore all proteins) also have nitrogen atoms which ultimately means that the radioactivity would not distinguish between DNA and proteins and the experiment will not provide the correct results.
Blood is supplied to the myocardium by
A) the coronary sinus.
B) the coronary arteries.
C) arteries that branch off the subclavian arteries.
D) contact with blood in the pumping chambers.
E) arteries that branch from the pulmonary arteries.
Answer:
B) the coronary arteries
Answer:
B
Explanation:
the artery of coronary circulation which nourishing myocardium
The coyote's diet includes a wide variety of small mammals, livestock, birds, reptiles, carrion, fruit, and vegetables. It is one of the few animals that has enlarged its range since human encroachment began. Which is the most likely reason for this?
It has adapted its diet to include more variety, thereby increasing its food supply.
It has intermingled with human pets, such as the dog, to increase its population.
It has migrated to ranges with more favorable, moderate climates.
It has an increase in nest and shelter sites within the urban and rural range.
Answer:
It has adapted its diet to include more variety, thereby increasing its food supply.
Explanation:
As the coyote is already an omnivore, but faces new food sources in the city, it easily adapts to this food. The more food an animal has, the higher the chances it will reproduce.
Answer:
It is A in edge 2020
-It has adapted its diet to include more variety, thereby increasing its food supply.
Explanation:
I just took the test
01:53:26 The main factors that determine the amount of runoff in an area include the shape of the land, how people use the land, the type of soil, and: a. amount of soil and vegetation b. amount of rain and vegetation c. amount of rain and amount of soil d. amount of rain and rock formations
Answer:
a
Explanation:
since runoff can be caused by little rainfall but in abundance of vegetation then it may decrease since they stop or slow down it's flow but runoff can not be affected by rocks since the velocity may even wear it
Answer:
The answer is a
Explanation:
i took the test its not that hard but its ok <3
Which statement correctly compares the pH of water to that of other substances?
he pH of water increases as its temperature increases, while other substances have a stable pH.
The pH of water is neutral; it is higher than the pH of acids and lower than the pH of bases.
Water contains more hydrogen ions than most other substances, giving it a higher pH.
Water is neutral and has a pH of 0; acids have a pH greater than 0, and bases have a pH less than 0.
What will most likely increase if there is a high death rate? immigration emigration birth rate population
Answer:
Emigration
Explanation:
If there is a large number of deaths, then the population would move onto another area to find a mate, more food, and to be together to protect themselves from danger
The component of population that will most likely increase with a high death rate would be emigration.
When the death rate shoots up in a particular environment due to certain factors, organisms are bound to emigrate away from such environment to avoid death from reaching them.
It is a natural instinct of every living organism to respond to stimuli. A high death rate is a stimulus that organisms would want to move away from.
More on population growth can be found here: https://brainly.com/question/2556439
Which of the following is correct about the polyadenylation mechanism?
Answer:
a long chain of adenine nucleotides is added to the 3' end of mRNA during termination of transcription
Explanation:
Pick the best one! U.S. international trade policies are designed to ______ the U.S. free enterprise system. A. change B. ignore C. restrict D. benefit
Answer:
C. Restrict
Explanation:
Let's be honest, it obviously can't be B even if you have no knowledge on this topic. Nor can't it be D. Which leaves A or C, however, change is a strong word for the government to basically do whatever they want. Which leaves C as the correct answer. Restrict, meaning that the government keeps the number of goods/cargo imported into a country under control. So C is the best answer choice.
If you feel that this is the incorrect answer choice, feel free to correct me!
______ 2. Who was responsible for passing this law? the state of California c. the U.S. Fish and Wildlife Service Greenpeace d. the U.S. Congress
The given question was incomplete as related information of question was missing however, the missing part is attached in the form of image.
Answer:
The correct answer is - the U.S. Congress
Explanation:
the U.S. Congress passed the law of known as Endangered Species Act and has modified or amended several times since. This act is designed to prevent plant and animal to extinct.
According to this law and its first provision the US fish and wildlife services have to create a list of threatened and endangered species in order to save them.
Thus, the correct answer is - the U.S. Congress
Which is one of the most dramatic triggers of sudden mass movements?
Answer:
An Earthquake is one of the most dramatic triggers of sudden mass movements.
How can we determine the velocity of a star moving toward or away from Earth? a. By looking at the color of the star. b. By the shift of its spectral lines. c. By the brightness of the star. d. By its change in apparent size.
Answer:
Hello!
Your answer should be B. By the shift of its spectral lines.
Explanation:
It is known that when studying space, to tell if a star is moving TOWARDS EARTH its measurements will move towards the RED side of the Spectrum...
MOVING AWAY will mean its measurements will move towards the BLUE end!
HOPE THIS HELPS!
itsMATT04
{i did a bit of research from revision guides so there may be some similar phrases! :)}
In an important experiment, a radioactively labeled bacteriophage was allowed to infect bacteria. In a first trial, the phage contained radioactive DNA, and radioactivity was detected inside the bacteria. Next, phage containing radioactive protein was used, and the radioactivity was not detected inside the bacteria. These experiments led to the conclusion that:_____.
A) DNA is made of nucleotides.
B) genes carry information for making proteins.
C) the genes of this phage were made of DNA.
D) bacteriophages can infect bacteria.
Answer: C) the genes of this phage were made of DNA.
Explanation: the experiment described above wherein a radioactively labeled bacteriophage was allowed to infect bacteria ultimately led to the conclusion that the genes of the bacteriophage under study were made of DNA (a biopolymer of deoxyribonucleic acid, which is a type of nucleic acid composed of four different chemical groups, called bases: adenine, guanine, cytosine and thymine). Simply put, the experiment shows that the genetic material of the phage is DNA.
A series of strong storms opened a stream channel between two lakes. The western lake contains a large, diverse population of a species of minnow (these are small fish). The eastern lake has never been populated by fish. When the channel opened, a small group of fish migrated to the eastern lake. Soon after, the stream channel dried up and was never opened again. The fish in the eastern lake thrived and continued to reproduce, building a large population over time. Compared with the fish in the western lake, what characteristics would you expect the population in the eastern lake to exhibit
Answer:
Same characteristics of fishes are present.
Explanation:
Same characteristics of fishes are present in both western and eastern lakes because in eastern lake the present fish species were migrated from the western species so the characteristics of fish population will be same. If the fishes that is present in western lake are small in size so it has same size in eastern lake. Their eating behavior and other characteristic show resemblance with the fishes present in western lake.
Mice living on a granite hillside have coloration ranging from light to dark. The surfaces of the granite rocks are either very dark or very light. Dark mice hiding on dark patches are difficult to see and light mice hiding on light patches are equally camouflaged. Mice with gray fur can be seen everywhere and are preyed upon more heavily. What kind of selection is this?
Answer:
Disruptive selection.
Explanation:
Natural selection is the result of the phenotype-environment interaction which determines gene destiny in space and time, selecting beneficial alleles and increasing their frequency in the population. There are different types of natural selection: sexual selection, stabilizing selection, directional selection, frequency-dependent selection, and disruptive selection.
The disruptive selection causes an increase in the two types of extreme phenotypes over the intermediate forms. Limits between one extreme and the other are frequently very sharped. Individuals belonging to one phenotype can not live in the same area as individuals belonging to the other phenotype, due to the traits differences between them, competition, predation, etcetera.
In the proposed case, each population of mice is adapted to its environment: one of them is dark-furred as the color of the dark patches it lives on, and the other population is light-furred as it lives in light patches. These adaptations are probably related to survival strategies and help them to avoid predators as they camouflage with the substrate.
Both extreme phenotypes have been favored over intermediate forms, resulting in the development of two groups with very marked differences. Grey-furred mice population belongs to the intermediate phenotype which can be seen everywhere and be preyed upon more heavily. Disruptive selection does not favor this phenotype.
Disruptive selection can lead to speciation, driving to evolution. This is why it is also called "diversifying selection".
A cell with 10 chromosomes undergoes Mitosis. How many daughter cells are created? How many chromosomes does each daughter cell have?
Answer:
2 daughter cells
10 chromosome
Explanation:
The mother cell creates two daughter cells but the number of chromosomes stay the same
Answer:
2 daughter cell with 10 chromosome each
The function of hemoglobin is to The function of hemoglobin is to stimulate erythropoiesis. carry dissolved blood gases. carry bicarbonate ion. produce antibodies. aid in the process of blood clotting.
Answer:
Carry dissolved blood gases
Explanation:
Haemoglobin is a protein usually found in the red blood cells and is said to be what give the blood its characteristics red color.
Haemoglobin is a protein that also contain some iron atoms which binds oxygen; a gas to itself and aid in the transport of oxygen from the lungs in some group of animals and gills in others to the rest of the body allowing for aerobic respiration to occur in the body.
Identify the various items used for micro farming and list out their nutritional benefits.
Answer:
While their nutrient contents vary slightly, most varieties tend to be rich in potassium, iron, zinc, magnesium and copper (2, 3 ).
Microgreens are also a great source of beneficial plant compounds like antioxidants ( 4 ).
Explanation:
You are designing a sustainable living space for the Mars Colony Mission. The colony will have plants growing inside of it
to recycle the carbon dioxide. You need to determine what type of lighting will be most beneficial to the plants. First you
pick a small set of sample plants and grow each in a different lighting. What is the BEST way to measure their
effectiveness?
Question Progress a
A. Measure the oxygen produced by the plant using a gas syringe,
B. Measure the pigment density in the leaves using a spectrophotometer,
C. Measure the carbon dioxide produced by the plant using a gas syringe.
DAMeasure the height of the plant with a ruler.
Answer:
Option A is the most appropriate answer.
Explanation:
The arrangement has plants being drenched in a water container to discharge Oxygen gas that is freed and gathered in a tube placed previously. The volume of gas gathered can be utilized to find out the rate of photosynthesis and whenever coupled by methods for pH observing gadget, an expansion in pH which shows soluble alkaline means that more oxygen yield. Along these lines, this method can be utilized to then again check CO2 levels. The gas syringe is utilized to permit the oxygen gas bubbles to be gathered at the known for evacuation and estimation purposes.
This photosynthometer is combined with a hydrogen carbonate indicator evaluating CO2 levels. At neutral levels in comparing with different cases, the shading is orange and there is a progressive change to yellow shading is CO2 focus is high. At low focus, the shading turns out to be a lot darker (purplish).
Thus, the correct answer is option A.
Answer:
A
Explanation:
use a gas test
A fine-grained igneous rock forms
Choice B is the right option since the cooling is fast.
The minerals may not have enough room to develop owing to a sudden cooling and therefore their structure is delicate and glassy. The composition of an igneous rock depends on how quickly the magma is cooled when the volcanic eruptions occur. Slow cooling allows big crystals to grow while rapid cooling allows tiny crystals to appear.
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the coyotes diet includes wide variety of small mammals livestock birds reptiles carrion fruit and vegetables
Answer:
Assuming this is a poorly formatted multiple choice question, the answer is most certainly small mammals, as coyotes do not prey on livestock or reptiles. They are omnivores, meaning they eat just about anything. They are known to also eat fruits.