Which statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA? 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. They used Levene's work to determine the number of base pairs in each strand. They used Nirenberg and Matthei's studies to determine that DNA is made of nucleotide
The statement best describes how Watson and Crick's model used other scientists' work to create a model of DNA.
A) They used Chargaff's rule to determine that it contains ribose sugar.
B)They used Franklin's photo to determine that DNA was a double helix.
How, explain your answer briefly?Watson and Crick used pieces of information available from different researchers such as Chargaff's rules and Franklin.
Chargaff had explained that 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 the 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.
Thus, 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.
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I am sometimes called your "windpipe." When you breathe.
air travels through me to your lungs. What am I?
Answer:
Trachea
Explanation:
cellular respiration release co2 and photosynthesis absorbs co2 these two reactions are part of which bio geochemical cycle
Answer:
On our dynamic planet, carbon is able to move from one of these realms to another as a part of the carbon cycle. Carbon moves from the atmosphere to plants. In the atmosphere, carbon is attached to oxygen in a gas called carbon dioxide (CO2).
you transcribed dna to make
Answer: mRNA also known as messenger RNA
Explanation:
what would be the end results if a experimment has been repeated several times an supports the same hyppothesis
When a hypothesis has been tested several times using experiments and found to be true, such a hypothesis becomes a theory.
What is a theory?A theory is a hypothesis that has been tested by experiments by several independent researchers.
Hypotheses are tentative statements without any scientific proof or backing. They can be tested using experiments.
Hypotheses remain accepted when there are supportive experimental data and become theories when several independent experiments support them.
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1. Explain why testosterone can improve performance in sport.
2. Describe the role of oestrogen in the menstrual cycle.
Answer:
1How does testosterone enhance performance? Testosterone acts on muscle cells by binding to a specific receptor protein, the androgen receptor. Upon testosterone binding, the androgen receptor signals to the muscle cell to activate the pathways that trigger an increase in muscle mass, called muscle hypertrophy.
2The oestrogen causes growth and repair of the lining of the uterus wall. Oestrogen inhibits FSH. When oestrogen rises to a high enough level it causes a surge in LH from the pituitary which causes ovulation where an egg is released from the follicle (Day 14 of the cycle).
How dose the rock cycle transform rock from one type to another
Answer:because weathering the rocks get broken down and makes a new rock
Explanation:
Explain why T cells are more likely to develop into T cells than T cells
Answer:
plssssssszz I beg u
Explanation:
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If V is the voltage applied across a resistor R, the current flowing through it is I. Determine
the variation in values in the following cases.
Answer:
the current is directly proportional to the voltage and inversely proportional to the resistance.
Explanation:
List the organelles that would be involved in repairing or replacing the mitochondrion, and explain the role each would play in the repair process. To answer this question, keep in mind that all organelles are made of proteins, and DNA codes for all proteins
Some organelles that we can mention are endoplasmic reticulum, lysosomes, cytoskeleton, peroxisomes, and nucleus.
What is the function of the organelle called mitochondria?The function of mitochondria to generate energy occurs through the process known as cellular respiration. The process consists of oxidizing molecules - usually derived from glucose present in the cytoplasm - and converting the energy generated from this oxidation to form energy-carrying molecules such as ATP.
In this case, the main cell organelles and their functions are of these organelles in the processes is:
Mitochondria : respiration Ribosomes: amino acid bindingEndoplasmic reticulum; protein productionGolgi Complex: storageLysosomes: digestionPeroxisomes: oxidationVacuoles: reserves and PlastsSee more about cell organelles at brainly.com/question/2135497
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Which blome or ecosystem has a long dry season that makes the growth of trees difficult?
A. grassland
B. boreal forest
C.
D.
deciduous forest
benthic zone
Grassland biome or ecosystem has a long dry season that makes the growth of trees difficult
What are biomes?Biomes are large geographical area of land consisting of a particular community of living organisms which occur as a result of the prevailing climatic conditions of the area.
Several biomes exist such as grassland, deciduous forests, alpine forests etc.
Grassland biomes are made of organisms which have been adapted to limited rainfall and long dry season.
Therefore, grassland biome or ecosystem has a long dry season that makes the growth of trees difficult.
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Cell division involves
O none of these
O cytokinesis
O mitosis
O mitosis and cytokinesis
How do you screenshot on the computer?
ctrl+ the box with the two lines
Answer:
para realizar una captura de pantalla completa, pulse el boton imprimir pantalla { tambien puede estar etiquetado como impr pant o petsis } del teclado.
puede estar cerca de la parte superior a la derecha de toda las teclas f { f1 , f2 , f3 , etc }
Explanation:
Which component of Earth’s atmosphere is decreased due to photosynthesis?
What are the differences in the internal structures of the cells pictured to the right? Check all that apply
How does water enter a plant?
A) through the stomata
B) through the roots
C) by active transport in root hair cells
D) by osmosis in root hair cells
Answer:
Explanation:Most of the water that a plant takes in enters through the root hairs. The water diffuses easily (and osmotically) into the root hairs because the concentration of dissolved materials in the plant's cellular cytoplasm is high.
Explain why the development of the seed was an important event in the evolution of
vascular plants.
The development of the seed was an important event in the evolution of vascular plants because it allowed plants to disperse their offspring far away.
What is plant adaptation?Plant adaptation refers to the different evolutionary features that emerged in the plant kingdom that allow plants to survive and reproduce.
Seeds are a fundamental evolutionary adaptive feature that enabled vascular plants to disperse their genes over longer distances.
In conclusion, the development of the seed was an important event in the evolution of vascular plants because it allowed plants to disperse their offspring far away.
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The most abundant element in the atmosphere can also be found in?
white sugar and soy protein.
fruits and hydrogenated oils.
carbonated water and glucose.
beans and whey protein.
The most abundant element in the atmosphere, nitrogen, can also be found in foods such as beans and whey protein; option D
What is the most abundant element in the atmosphere?The most abundant element in the atmosphere is nitrogen.
Nitrogen is a major component of amino acids.
Amino acids are the building blocks of proteins.
Thus, nitrogen is abundant in protein-containing foods.
Beans and whey protein are protein-containing foods.
Therefore, the most abundant element in the atmosphere, nitrogen, can also be found in foods such as beans and whey protein.
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Glycogen is an energy-storage molecule in humans. A hormone that is called insulin controls the storage of glycogen in the liver. Insulin is made up of amino acids.
Which statement correctly identifies the types of macromolecules that are described?
Glycogen is a protein, and insulin is a lipid.
Glycogen is a protein, and insulin is a protein.
Glycogen is a carbohydrate, and insulin is a lipid.
Glycogen is a carbohydrate, and insulin is a protein.
The statement "Glycogen is a carbohydrate, and insulin is a protein" correctly identifies the types of macromolecules that are described. Thus, the correct option is D.
What is the main function of Glycogen?The main function of glycogen is to control the release of glucose into the blood when the condition is glucose deficient. It is the liver that directly contributes to the release of glucose into the blood.
Insulin is a hormone that is made up of amino acids, hence it is a small protein that contains almost all structural features of proteins.
Glycogen is a complex carbohydrate that can easily and rapidly coverts the form of glucose into energy.
Therefore, the correct option for this question is D.
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Describe and account for the relationship between the two population growth curves between hares and lynx.
Answer:
The lynx's principal food source is the snowshoe hare. These two species' population cycles are intertwined. When hares are abundant, lynx consume almost nothing else and kill two hares every three days. When hares are sparse, lynx eat mice, voles, squirrels, grouse, ptarmigan, and carrion.
which statement accurately describes a similarity between earth and venus
Answer:
both planets have signs of volcanoes.
Explanation:
Pls help meee!!!!!!!!!
Answer:
i think it is euless
Explanation:
not really sure but i have a feeling it is correct
HELP ILL MARK BRAINLIEST !!
Answer:
you were correct its 16 cups
Explanation: good job!
this is a simple diagram of a food chain:
producers --> herbivores --> carnivores --> top carnivores
if all the carnivores die out, why does the number of producers decrease?
i'm not sure but what im thinking is, well if carnivores die, then not many herbivores will die, therefore there isn't that natural soil fertilizer due to the dead bodies.
Explanation:
By all the carnivores, I assume it means regular and top carnivores. This will let the herbivores live longer which means they eat more food, food being producers causing producer numbers to fall drastically
The picture shows a model of a cell.
What is the main function of the parts labeled X'in the model?
A. To use energy from sunlight to make sugars
B. To hold and protect the cell's DNA
C. To store enzymes that break down food
D. To provide cells with energy for their activities
Answer:
To use energy from sunlight to make sugars(foods)
In a grassland ecosystem, praying mantises catch and eat grasshoppers. However, there has been a significant decrease in the praying mantis population in recent years.
How will this most likely affect the grasshopper population over time?
The population will decrease because grasshoppers are the competition.
The population will increase because grasshoppers are the prey.
The population will increase because grasshoppers are the competition.
The population will decrease because grasshoppers are the prey.
Answer:
The population will increase because grasshoppers are the prey.
Answer - B. The population will increase because grasshoppers are the prey.
Because this is a Unit Test you just have to trust me.. Hope this helps. Good luck!
Why are producers so important
to ecosystems?
A. Producers are used to put water into the air of
dry places.
B. Producers help transfer energy from
secondary to tertiary consumers.
C. Producers capture energy and convert it for all
organisms to use.
Answer:
C
Explanation:
Producers are also known as autotrophs, which they make their own food. Producers capture sunlight energy and use it to convert CO2 (carbon dioxide) and H2O (water) into O2 (oxygen) and C6H12O6 (glucose) for other organisms to use. This process is called photosynthesis.
Earth has a bulge near the Equator due to its rotational momentum.
True
False
Answer:
false because it happens of centripetal forceExplanation:
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Charles Darwin’s findings were pivotal to the formation of the theory of evolution. He noted that the Galapagos Islands, which are located about 1,000 kilometers away from South America, were made up of different types of finches. These species were all believed to have evolved from a species on the mainland, but they developed different adaptations to survive in their environment. Based on this information and the image, answer the following questions.
Answer:
What is the Galapagos Islands in Ecuador the site of Darwin's note on?
Darwin first came to the Galápagos in 1835, on a ship called the HMS Beagle. His observations of wildlife on the island inspired his theory of evolution by natural selection
The data show the number of pieces of mail delivered to a single home address each day for three weeks.
4, 0, 2, 6, 1, 0, 3, 4, 0, 2, 4, 1, 5, 2, 3, 1, 1, 2
The data show the number of pieces of mail delivered to a single home address each day for three weeks.
4, 0, 2, 6, 1, 0, 3, 4, 0, 2, 4, 1, 5, 2, 3, 1, 1, 2 Which statement is true about a graph representing the data? Check all that apply.
The number line of a dot plot would start at 1.A dot plot would show 7 points for numbers greater than 2.The intervals on a histogram should be 0 to 2, 3 to 4, and 5 to 6.A histogram would have a maximum of 7 bars.A histogram should not show a bar that includes 0 pieces of mail.A dot plot would show 7 points for numbers greater than 2.What is histogram?
Histrogram is refer to as diagram made up of rectangles whose size is related to a variable's frequency and whose width is equal to the class interval.
Answers:
4.0.2.6.1.0.3.4.0.2.4.1 2.21
10 for 3 days for 4 days 2 for 4 days. 3 for 2 days 4 for 3 days 5 for 1 day 6 for day in a graph.
1. Statement 1 false because It should start at O.
2. Statement 2 true because 7 points for numbers greater than 2 are Greater than 2 3 4 5 6
3. Statement a false because it should be a 2.
4. Statement 4 true because there are 2 numbers. 2.1.2.3456
5. Statement 6 false because it should show 3 bars at o.
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If 43% of the nucleotides in a DNA sequence contained guanine what would be the percentage of cytosine in that same sequence
A) 14
B)24
C) 7
D) 43
If 43% of the nucleotides in a DNA sequence contained guanine what would be the percentage of adenine in that same sequence
A) 14
B) 24
C) 7
D) 43
Answer: D and C
Explanation: