Answer:
The DNA of E. coli contains 19,120 6-methyladenines and 12,045 5-methylcytosines in addition to the four regular bases and these are formed by the postreplicative action of three DNA methyltransferases. The majority of the methylated bases are formed by the Dam and Dcm methyltransferases encoded by the dam (DNA adenine methyltransferase) and dcm (DNA cytosine methyltransferase) genes. Although not essential, Dam methylation is important for strand discrimination during repair of replication errors, controlling the frequency of initiation of chromosome replication at oriC, and regulation of transcription initiation at promoters containing GATC sequences. In contrast, there is no known function for Dcm methylation although Dcm recognition sites constitute sequence motifs for Very Short Patch repair of T/G base mismatches. In certain bacteria (e.g., Vibrio cholerae, Caulobacter crescentus) adenine methylation is essential and in C. crescentus, it is important for temporal gene expression which, in turn, is required for coordinating chromosome initiation, replication and division. In practical terms, Dam and Dcm methylation can inhibit restriction enzyme cleavage; decrease transformation frequency in certain bacteria; decrease the stability of short direct repeats; are necessary for site-directed mutagenesis; and to probe eukaryotic structure and function.Explanation:
The concentration of sodium on the inside of the cell is 20 mM. The outside of the cell has a sodium concentration of 115 mM. Which mechanism of ion uptake would best move sodium from the inside of the cell to the outside?
Answer:
d) active transport
An aquatic food chain would be found in Earth's_____?
1) lithosphere
2) hydropshere
3) atmosphere
4) troposphere
Why does swimming fast require lots of energy?
Answer:
A 160-pound person burns approximately 423 calories an hour while swimming laps at a low or moderate pace. That same person may burn up to 715 calories an hour swimming at a more vigorous pace. A 200-pound person doing the same activities would burn between 528 and 892 calories an hour.
But why?
Water temperature affects physiological systems which can make you tired.Swimming is a full-body workout.Swimming can cause dehydration.Swimming workout intensity can affect energy levels.Nutritional timing before and after swimming can affect fatigue.Swimming in the sun can make you tired.Explanation:
Answer:
swimming requires lots of energy because you need the energy to keep your body warms hole in the water and also to help in metabolism
10. Use the data and what you have learned about evolution to explain how mutation is a random process, but
hatural selection is not random.
Answer:
Mutations are random, but natural selection is not random. Different mutations can cause the same phenotype. Evolution repeats itself in different environments.
Explanation:
Introduced by Charles Darwin, natural selection is the idea that a species adapts to its environment through changes in its genetics. Natural selection is not random, though the genetic changes (or mutations) that are filtered by natural selection do come about randomly.
explain:
Q4: What area of Earth is receiving the most solar radiation?
Answer:
The Equator
The equator is the center of the globe, it receives the most sunlight and radiation.
Use the Malfoy family pedigree below to answer the following questions:
1. Indicate how many generations are present in the pedigree (0.5 mark)
2. What pattern of inheritance is shown in the pedigree? Explain your answer. (2 marks)
3. Show a Punnett square for the cross between II-3 and II-4 (2 marks)
No links please or action will be taken
Answer:
where is the pedigree?
Explanation:
For the following organisms, choose the correct order of increasing trophic level. a. fungi, deer, wolf and grass b. fungi, grass, wolf and deer c. grass, deer, wolf and fungi d. grass, fungi, wolf and deer Please select the best answer from the choices provided
Answer:
Your answer is C
Explanation:
The correct answer is for the following organisms, is grass, deer, wolf and fungi that is the option c as the trophic level refers to the position of an organism in a food chain.
The trophic level refers to the position of an organism in a food chain or food web. In a food chain, energy flows from one trophic level to the next as organisms are eaten by other organisms. Grass occupies the first trophic level as a primary producer. Deer occupy the second trophic level as they feed on primary producers (grass). Wolves are carnivores and occupy the third trophic level as they feed on herbivores (deer). Fungi occupy the last trophic level as decomposers, so this is the correct order among all other options.
Thus, correct option is option c.
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16. Which statement best describes the way that
an adenosine diphosphate (ADP) molecule
becomes an adenosine triphosphate (ATP)
molecule in the human body?
C
A. Protein causes phosphate molecules to bind to
Sugars and form ATP.
B. Food energy is used to attach a phosphate
molecule to an ADP molecule.
C. lonized oxygen in cells causes sugars and
phosphate molecules to form ATP.
D. Water breaks down ADP molecules which form
into ATP molecules over time.
B. Food energy is used to attach a phosphate molecule to an ADP molecule
An adenosine diphosphate (ADP) molecule evolves an adenosine triphosphate (ATP) molecule in the human body B. Food energy is utilised to tie a phosphate molecule to an ADP molecule.
How does ATP store its energy?ATP or Adenosine triphosphate acts as the energy of the cell.
It keeps the energy released in the oxidation of glucose during cellular respiration.
ATP is split into ADP and Pi and energy is freed.
Thus, option "B" Food energy is used to attach a phosphate molecule to an ADP molecule.
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Juan received a class assignment to write about organisms that live in extreme environments. While doing online, he found an image that showed microbial bodies thriving in hot springs. The organisms a nucleus or organelles. Which organisms can he possibly find in such conditions?
Thermophiles (Archeans which live in extremely hot temperatures)
4/10
If Sara has a mass of 60 kg and lives on the fifth floor of her
apartment 18 m above the ground, then what is her
gravitational potential energy?
Use g=9.81 m/s2 for the acceleration due to gravity.
The gravitational potential energy of Sara at the given height is 10594.8J.
Given the data in the question;
Mass of Sara; [tex]m; = 60kg[/tex]Distance from ground; [tex]h = 18m[/tex]Acceleration due to gravity; [tex]g = 9.81m/s^2[/tex]Gravitational potential energy; [tex]U = \ ?[/tex]Gravitational Potential EnergyGravitational potential energy is the potential energy an object with mass posessses relative to another object with mass due to gravity.
It is expressed as;
[tex]U = mgh[/tex]
Where m is mass, h is height and g is acceleration due to gravity.
To determine the gravitational potential energy of Sara, we substitute our given values into the expression above.
[tex]U = mgh\\\\U = 60kg * 9.81m/s^2 * 18m\\\\U = 10594.8kgm^2/s^2\\\\U = 10594.8J[/tex]
Therefore, the gravitational potential energy of Sara at the given height is 10594.8J.
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What is one of the drawbacks of selective breeding?(1 point)
Explanation:a reduction in genetic diversity and discomfort for animals that have very exaggerated characteristics.
6. In your own words, what is Photosynthesis?
Answer:
Photosynthesis is an endothermic process used by plants that converts sunlight, carbon dioxide and water into glucose and oxygen.
When an object is seen clearly under the microscope, it is said to be??
Why does it benefit an imperial shrimp to travel on a sea cucumber?
A. The shrimp feeds on the sea cucumber as it rides.
B. The shrimp could move to a new feeding ground.
C. The sea cucumber is one of the shrimp’s predators.
D. The sea cucumber carries parasites that the shrimp eat.
Answer:
B
Explanation:
Because the Imperial Shrimp uses little to no energy moving around because the Sea Cucumber does the moving for it while it goes to new feeding grounds.
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What is the number of individuals that are needed for a species to continue?
a. Critical Mass
b. Endangered species
c. Extinction
Answer:
a
Explanation:
because critical mass is the number of individuals that must exist for a species to continue.
Answer:
a
Explanation:
In which form is energy stored at the end of photosynthesis?
A. Solar energy
B. Electron energy
C. Proton energy
D. Chemical energy
Answer:
D. Chemical Energy
Explanation:
Sunlight is converted to chemical energy in the form of ATP (adenosine triphosphate), which is the main energy-storing molecule in living organisms. ATP is then transported throughout the chloroplast and used to provide the chemical energy necessary to power other metabolic reactions.
choose all that apply
Some landforms you might see while traveling across the country could be
mountains
forests
hills
rivers
glaciers
Answer:
forests, hills, rivers, and maybe mountains.
Explanation:
I'm right you are wrong.
In the Tough Man Competition, very strong men are challenged to push or pull extremely large and heavy objects to test their strength. In
one such challenge, they were asked to push one of two rail cars, an engine car and a box car. The data tables show one man's results.
Look over the data table and answer the questions below.
Force Applied by the
Tough Man
Did it move the
engine car?
No
Did it move the
boxcar?
No
1000 Newtons
2000 Newtons
No
No
3000 Newtons
Yes
No
A Why couldn't the strong man move the box car with a force of 3000 Newtons?
Make sure to include Newton's 2nd Law in your explanation.
B. What could be done to move the boxcar?
C. Another student claims that during the competition, the sum of the forces on the boxcar was O N.
What evidence is the student using to make this claim? Be sure to explain your thinking.
o Tyne here to search
Based on the Newton's laws of motion, the motion of an object is due to an unbalanced net force.
What is Force?A force is a push or pull effect which causes a change in the motion or state of an object.
Newton's second law states that the acceleration of an object is to the net force acting upon the object, and inversely upon the mass of the object.
Thus, motion occurs when there is greater net force acting on an object.
From the diagram shown above, when a force of 3000 N is applied by the man, the boxcar does not move because the force applied by the man is less than the force on the boxcar.
The box car will move if a force greater than that on the boxcar were applied to it.
According to Newton's third law of motion, for every force, there is an equal but oppositely acting reactionary force, therefore, the net force on the boxcar is 0 N.
Therefore, the motion of an object is due to an unbalanced net force.
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Examine the photosynthesis model above. What is a correct conclusion about the inputs and outputs of photosynthesis?
A) without light energy from the sun, photosynthesis would still occur
B) oxygen is an input into photosynthesis; carbon dioxide is an output
C) carbon dioxide is the source of energy: oxygen is the chemical energy produced
D) sunlight is the source of energy, plant sugars are the chemical energy produced
Answer:D.
Hope this helps :)
If so brainliest would help me out a lot thanks!
Explanation:
It's between B. and D. But im pretty sure its D.
Outline the biochemical pathways which enables cells to produce energy using glucose and oxygen
Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP.
What is respiration?Respiration is the process in which cells use oxygen to break down sugar in order to obtain energy. Glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation are the stages of cellular respiration.
So we can conclude that Cellular respiration is a metabolic pathway that breaks down glucose and produces ATP.
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In STR profiling, PCR is used to obtain enough DNA to then detect the number of STRs at I specific loci.
PCR technique is important in STR profiling in order to amplify and detect the number of Stars at a specific gene loci.
What is Short Tandem Repeat (STR) profiling?Short Tandem Repeat profiling is a technique in molecular biology used to compare allele repeats known as STRs at specific loci in DNA between two or more samples.
The PCR (polymerase chain reaction) technique used in STR profiling involves making multiple copies is a particular segment of DNA in order to make enough quantities detectable in the analysis.
Therefore, PCR technique is important in STR profiling to detect the number of Stars at a specific gene loci.
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What is the difference between malleable and ductile
Which organisms are eukaryotes?
Answer:
Single celled organisms like yeast, paramecia and amoebae are all eukaryotes. Grass, potatoes, and pine trees are all eukaryotes, as are algae, mushrooms, and tapeworms. And, of course, moles, fruit flies, and you are also examples of eukaryotes.
HOPE THIS HELPS, HAVE A GREAT DAY!!~
Explanation:
distinguish between male and female cones of pinus and cycas
Answer:
You can observe a difference between Cycas and Pinus in their cones too. The male cone of cycads is large and terminal, bearing numerous microsporophylls while the male cone of pines is small and clustered. Female Cone
Explanation:
Wes met a young woman in one of his classes and was assigned to be in a group with her. Initially, Wes was not particularly interested in her as far as dating was concerned. However, once he found out that she was physically attracted to him, he suddenly felt very attracted to her as well. Wes's increased attraction toward this young woman is BEST explained by the influence of:
proximity.
common group identity.
similarity.
reciprocal liking.
The BEST explanation for Wes's increased attraction toward this young woman is due to the influence of reciprocal liking.
What is reciprocal liking?Reciprocal liking is the attraction or feelings of attraction to someone that a person develops only when he/she learns or becomes aware that the person is attracted to them as well..
Reciprocal liking is also known as reciprocity of attraction.
From the scenario, Wes did not initially like the young woman.
Wes develops an attraction to her after he learns she is attracted to him.
This is an example of reciprocal liking.
Therefore, Wes's increased attraction toward this young woman is BEST explained by the influence of reciprocal liking.
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how did the appearance of mendels F generation differ from the appearance of the P generation?
Based on the results, of Mendel's experiments, the F generation had the same appearance as the P generation.
What was Mendel's experiments?In his experiment, Mendel crossed true breeding peas that had white-colored flowers with those that had purple-colored flowers to produce offspring.
The parent's generation were the P generation while the offspring were the F generation.
The results of Mendel's experiments showed that the F1 generation all had purple-colored flowers .
This Mendel concluded was because purple-colored flower trait was dominant over white-colored flower trait.
Therefore, based on his results, the F generation has the same appearance as the P generation.
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I will give Brainliest!!! :D
When the Punnett square is filled out, what do the four boxes represent?
The four different outcomes for the genes of what is being made.
What is a cloud of dust and gas in space known as?
O a galaxy
O a nebula
O a solar system
O an asteroid
Answer:
B. Nebula
Explanation:
A solar system, an asteroid, and a galaxy is not made of dust and gas. But a nebula is made of dust and gas
Answer - It says a NEBULA is an enormous cloud of dust and gas occupying the space between stars and acting as nursery for new stars.
Many ideas concerning cells have been proven and incorporated into cell theory. Which of the following is not part of the cell theory?
A All living things are composed of one or more cells.
B All new cells come from other cells.
C Cells are the basic unit of structure and function in living things.
D All cells reproduce through photosynthesis.
Answer:
all cells reproduce through photosynthesis
Explanation:
Answer: a is correct
Explanation:
I did it
true of false cytosine is a purine base
Answer:
It's True.
Explanation:
i hope this helps.
