The bar graph that is essential to answer the question is attached with the answer:
Answer:
The correct answer is given as follows:
Explanation:
Mean is the average in a common or informal way. It can be calculated by Adding the total numbers up and divide them by the total number of values in the set.
In this case: 37 is the mean value that can be calculated by:
adding all the values: 36.7+36.8+36.9+37+37.1+37.2+37.3 = 259
Number of sets = 7
then mean = 259/7
= 37
Thus, the mean can be calculated by total value divided by the number of sets
alfred hershey and martha chase designed an experiment to determine the chemical makeup of griffith's transforming principle. define the term bacteriophage and explain why this organism was a good choice for this particular experiment. describe the procedure of the experiment using the terms bacteriophage, DNA, and proteins in your answer. Describe the results of the experiment and connect them to hershey and chases conclusion
Answer:
Bacteriophages (phages) are viruses that infect only bacteria and do not infect mammalian or plant cells. Phages are ubiquitous in the environment. Phages or bacteriophages were chosen as a model system for their simplicity, as they only contained protein-coated nucleic acid. Alfred D. Hershey and Martha Chase (who were part of the bacteriophage group) in 1952 studying the infection of the bacterium Escherichia coli by the T2 phage show that the information definitely resides in the DNA. They used phage with either [32P] -labeled DNA or [35S] -labeled proteins to infect the bacteria. Immediately afterwards, they centrifuged the sample so that the infected bacteria remain in the pellet and the virus capsids (proteins) remain in the supernatant. [35S] is found in the supernatant, whereas [32P] is found in bacteria. After one cycle of infection, it was observed that when phage labeled in the [35S] proteins were used, only 1% of the radioactivity was incorporated into the progeny. But when phages were [32P] labeled, more than 30% of the radioactivity was in the progeny. They showed directly that what is transmitted from one progeny to another is the DNA and not the proteins, despite having first "diluted" in a bacterium.
Explanation:
Bacteriophages are viruses that infect bacteria in a specific way. Bacteriophages, like other known viruses, are found in an intermediate zone between living organisms and inert matter. Bacteriophages bind to the host pathogenic bacterium, introduce their genetic material, replicate inside it and destroy it. Hersey, along with his assistant Martha Chase, used phages because they knew that T2 phages were made up of 50% proteins and 50% nucleic acids and that phages entered bacteria and reproduced. As the progeny carried the same infection traits, the genetic material of this had to be transmitted to the offspring, but the mechanism was unknown. These scientists carried out an experimental work with the T2 virus, a bacteriophage that infects the bacterium Escherichia coli, which it reproduces by attaching itself to the outer wall of the bacterium, injecting its DNA into it where it replicates and directs the synthesis of the phage's own proteins. Phage DNA is encapsulated within proteins and produces phages, which lyse or disrupt the cell and release phage from progeny. They infected a culture of bacteria with radioactively labeled phages: the protein coat with sulfur (35S) and its DNA with phosphorus (32P). After infection, they separated the phages from the bacteria by violent shaking using a mixer (hence the name of the experiment). By centrifugation the much smaller phages remained in the supernatant and the much larger bacteria in the pellet. 85% of the radioactivity corresponding to DNA appeared in the pellet and 82% of the protein in the supernatant. This result supported the idea that DNA was the only component of the bacteriophage that penetrated the interior of the bacteria and, having the ability to form new phages, constituted the genetic material.
Someone please help!
The picture below shows a model of the human digestive tract.
Which of the following best describes the purpose of this model?
to show how organs in the digestive tract are compressed by contracting muscles
to show the parts of the digestive tract without having to use real organs
A
B
to show how microscopic molecules flow through the digestive tract
D
to show the function of one organ in the digestive tract in isolation
Answer:
to show the function of one organ in the digestive tract in isolation
After cytokinesis, how many cells have been formed from the parent cell?
Answer:
During cytokinesis, a single cell divides into two daughter cells.
Explanation:
Answer: Mitosis = 2 genetically identical daughter cells,
Meiosis = 4 genetically different daughter cells
Which will occur when two organisms in the same habitat occupy the same niche?
A.competition
B.mutation
C.geographic isolation
D.symbiosis
Answer:
abcdefs
Explanation:
Scientists say the planet Venus has a "runaway greenhouse effect." What condition would you expect on Venus as the result of a runaway greenhouse effect?
A. The planet is extremely windy.
B. The planet is extremely watery.
C. The planet is extremely cold.
D. The planet is extremely hot.
A pine tree is a conifer. What type of plant is a conifer?
an
angiosperm
a gymnosperm
Answer: A subset of Gymnosperms
Explanation: They are cone-bearing seed plants
How can humans best limit the negative impact that farming has on soil quality?
Answer:
rasenshuriken jk f these resources, soil and water have provided humans with the ability to ... to fertile soils; 3) the impacts of intensive agriculture on soil degradation; and 4) the ... in a severe limitation of crop yield — an example of the principle of limiting factors. ... to generate new soil, it is imperative that agricultural practices utilize best ...
Explanation:
Which of the following describes erosion caused by glaciers?(2 points)
It forms big ice chunks.
It changes the temperature.
It happens quickly.
It takes a long time.
Answer:
NUMBER TWO DONE BOIIIIIIIIIIIIIIIIIIIIIIIIIIIIII
Explanation:
29. A teacher presented the two models below to the dass. The models represent a eukaryote and prokaryote cell. The teacher asked the students to label the structure of each cell that contains the genetic code and
tell where it is located.
structure C, located in the cytoplasm in Cell A and structure C, located in the cytoplasm in Cell B
structure H, located in the cytoplasm in Cell A and structure A, located in the nucleus in Cell B
structure C, located in the nucleus in Cell A and structure C, located in the cytoplasm in Cell B
structure H, located in the cytoplasm in Cell A and structure A, located in the cytoplasm in Cell B
Answer:
C. structure C, located in the nucleus in Cell A and structure C, located in the cytoplasm in Cell B
Explanation:
This question contains images that depicts an eukaryotic cell (animal) and a prokaryotic cell (bacteria). According to the question, a teacher asked the students to label the structure of each cell that contains the genetic code (DNA) and tell where it is located.
In an eukaryotic cell, the genetic material (DNA) which contains the genetic code is located inside a well defined membranous structure called NUCLEUS while the genetic material in a prokaryotic cell is found naked in a region of the cytoplasm called NUCLEOID as they lack a membrane-bound nucleus. Based on this explanation;
- Structure C is the genetic material (DNA) which contains the genetic code of cell A (eukaryotic cell), hence, the genetic code of cell A is found in structure C, which in turn is located in the centrally-placed NUCLEUS.
- Structure C is the genetic material containing the genetic code of cell B (prokaryotic cell), hence, the genetic code of cell B is found in structure C, which in turn is located in the CYTOPLASM.
Study Guide
Relationships in Ecosystems/ Human Impact
1. Which of the following is NOT correct?
A population is all the organisms of the same species that live in the same area
b. A community is all the populations of different species that live together in the
same area
A population is all the populations of different species that live together in the
seme eres
d. An ecosystem is all of the living and nonliving things in an area
C.
why is intensive system the most EXPENSIVE system
Answer:
The intensive farming looks at increasing the yield in the given limited land space with a high dependency on fertilizers, labor, and machinery. ... But as extensive farming is remotely located, the labor cost, the production cost is higher. Also, the output calls for much more care and takes a while to yield the crops.
Explanation:
The process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of its action was first fully
expounded by Charles Darwin and is now believed to be the main process that brings about evolution
True
False
True
The process is called natural selection and was first explored by Charles Darwin in the 19th century.
NATURAL SELECTION is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. This concept was first developed by Darwin (both statements are TRUE).
Darwin referred to evolution as the process of 'descent with modification'.The main mechanism by which organisms evolve to adapt to their environments is natural selection.The theory of evolution by natural selection was developed by Darwin and it is now widely accepted as the main cause of evolution. According to Darwin, species change (evolve) over time, thereby giving rise to new species that share a common ancestor.In conclusion, NATURAL SELECTION is the process whereby organisms better adapted to their environment tend to survive and produce more offspring. The theory of evolution by natural selection was first developed by Darwin (both statements are TRUE).
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What are the qualities of greenhouse gas? Select the two correct answers.
A. transparent to infrared radiation
B. three or more atoms in a molecule
C. produced by human activity
D. absorbs and re-emits infrared radiation
E. composed of single atoms, not molecules
Answer:
produced by human activity
absorbs and re-emits infrared radiation
Explanation:
produced by human activity
absorbs and re-emits infrared radiation
please answer!!
what would the offspring of a chicken look like if feather color were inherited through incomplete dominance?
100 POINTS!!!!
HAS ANYONE DONE THE LAB: Pigeonetic ASSIGNMENT IF SO COULD U SEND THE WORKSHEET
Answer:
I have not done it yet give me a sec
Does papa love mombo?
Please Answer These Questions!
1. What is a stimulus?
2. Why does the body respond to stimuli?
3. What are some different types of stimuli?
4. What are sensory organs and what type of stimuli do these receptors respond to?
5. What is an explanation of how the information from stimuli is communicated to the brain?
6. What is a description of the two things that can happen when the brain processes the information from stimuli?
Hello, 3Coli Here!
Here are your answers:
1. What is a stimulus?
Stimulus is a natural body reaction caused by changes in the environment around or inside the organism. This is a response from the brain.
2. Why does the body respond to stimuli?
The body responds to stimuli, because it needs to protect itself.
3. What are some different types of stimuli?
The two main types of stimuli are external stimuli and internal stimuli. External stimuli are reactions triggered by changes that occur outside of the body, while internal stimuli are reactions triggered by changes inside of the body.
4. What are sensory organs and what type of stimuli do these receptors respond to?
The most commonly used sensory organs include Eyes, Ears, Tongue, Nose, and Skin. Eyes respond to light and motion, because they are used to see. Ears respond to sound, because they hear. The tongue is used to taste, so it senses flavors. The nose is used to smell, so it responds to scents. Finally, the skin is used to feel, so it responds to whatever it feels.
5. What is an explanation of how the information from stimuli is communicated to the brain?
Neuron receptors convert internal and external environments into electrical signals, and then is sent to the brain through nerves.
6. What is a description of the two things that can happen when the brain processes the information from stimuli?
After the brain receives the signal, it will provide a response. One type of response is that the body will physically react to the change. The second type of response is to avoid the change.
Hopefully, this helps! :D
Ask your question below!
Why is DNA related to protein
DNA stores the instructions (genetic information) used to build proteins.
What are the 3 most important parts of a seed
Answer:
the 3 primary part of a seed are the embryo, endosperm, and seed coat.
expaination:The embryo is the young multicellular organism before it emerges from the seed.
Global climate has changed in the past due to ___ and ____ .
Answer:
The answer of this question is continent and oceans.
Animal that live in water is also called as _____?
Answer:
aquatic animals......hope it will help you
what is
Meiosis and Mitosis
Answer:
mitosis is part of a cell that splits in 2 to make two new nuclei. Meiosis is the special cell division of sexual reproduction, like sperm and egg cells
Explanation:
what kingdom does eubacteria belong to
Answer:
Like archaebacteria, eubacteria are complex and single celled. Most bacteria are in the EUBACTERIA kingdom. They are the kinds found everywhere and are the ones people are most familiar with. Eubacteria are classified in their own kingdom because their chemical makeup is different.
Explanation:
Which statement is true about
electrically charged particles?
A. neutrons are positive, electrons are negative
B. protons are negative, neutrons are positive
C. protons are positive, electrons are negative
Answer:
C
Explanation:
protons are positive neutrons are neutral and electrons are negative
In an electrically charged particles protons are positive and electrons are negative.
Neutron has a positive electrical charge?The charge on neutron is zero(no charge). The charge on the proton and electron are exactly the same size but opposite. The same number of protons and electrons exactly cancel one another and so atoms are neutral. Protons have positive or negative?A proton carries a positive charge and an electron carries a negative charge.so the atoms of elements are neutral, all the positive charges canceling out all the negative charges. Atoms differ from one another in the number of protons, neutrons and electrons they contain.Learn more about electrical charge here: http://brainly.brainly.com/question/1487561
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Enter the correct 4 digit code (no spaces)
The hidden code in the puzzle is 4321.
How to solve the riddle?The riddle in the picture has the objective of hiding the order of the numbers so that the reader finds the order. In this puzzle the reader must follow the line of each letter and find the order of the numbers to find the code.
Based on the above, it can be inferred that:
The letter A line leads to the number 4.The letter B line leads to the number 3.The letter C line leads to the number 2.The letter D line leads to the number 1.So the complete code would be:
4321Learn more about riddles in: https://brainly.com/question/478260
Answer:
It's actually 3214
Explanation:
What term is used to describe the crust and uppermost part of the mantle?
Answer:
Answer down below!
Explanation:
The term is called the Asthenospehere. The Lithosphere is the layer of air surrounding it.
Hope this helps!
in 2008, engineers at nasa developed the Fermi gamma ray telescope. gamma rays come from the most extreme places in the universe. NASA is studying them because scientists want to learn more about environments in the universe that make gamma rays. this includes objects such as exploding stars. the photograph below is an image taken using the Fermi gamma ray telescope. using the information above, along with your knowledge of the electromagnetic spectrum column where should the Fermi going rate telescope be placed to enable the highest quality images to be recorded by this telescope? A. orbiting in space somewhere outside earth's atmosphere. B at the top of a tall mountain away from all sources of light pollution. C any area on Earth that will allow enough room for a large satellite dish. or D. two opposite locations on earths surface are required, including the north and south pole.
_____ is a force caused by air that slows objects down
Answer:
Drag
Explanation:
Drag is a force caused by air that slows objects down
Friction is a major force that slows the object down, air resistance is a type of frictional force.
What is air resistance?Air resistance is a kind of frictional force that slows down an object from moving in a particular direction.
During the movement an object has a particular speed for movement, speed depends on how friction works, more friction slows the speed of an object a low friction allows the object to at a particular speed.
Air is a mixture of gases and particles in the atmosphere, these particles create a force during the movement of an object in the air, and these forces decide the actual speed of object movement.
Therefore air resistance is a force that slows the object.
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Bombardier beetles release a burst of hot chemical spray with a popping sound. The chemical is sprayed from a structure present under the belly of the beetles. Which is the likely advantage of such a behavior?
Answer:It allows beetles to escape from predators.
Explanation:
hello help please i’ll mark brainliest!!! please help
Answer:
Answer: The hottest time of the day is around 3 p.m. Heat continues building up after noon, when the sun is highest in the sky, as long as more heat is arriving at the earth than leaving. By 3 p.m. or so, the sun is low enough in the sky for outgoing heat to be greater than incoming.
Explanation:
Answer:
The third one
Explanation: