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:
Describe the role of enzyme in metabolism
Answer:
The chemical reactions required to break them down would be too slow without enzymes.
Explanation:
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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Which planets are the
coldest? Which are the warmest? Why?
Answer:
The hottest planet in the solar system is Venus with an average temperature of 864 degrees Fahrenheit or 462 degrees Celsius.
The coldest planet in the solar system is Neptune with an average temperature of -353 degrees Fahrenheit or -214 degrees Celsius.
Explanation:
Why venus is the hottest planet in the solar system?
The hottest planet in the solar system is Venus with an average temperature of 864 degrees Fahrenheit or 462 degrees Celsius. The coldest planet in the solar system is Neptune with an average temperature of -353 degrees Fahrenheit or -214 degrees Celsius.(In short venus is closed to the sun)
Why Neptune is the coldest planet in the solar system?
Neptune is the coldest planet within our Solar System because it is the furthest planet from the Sun. The Sun is the ultimate source of energy for the Solar System. The temperature of a planet is affected by its distance from the Sun. Radiation from the Sun is lost to its surroundings as it travels through space.
Correct me if I'm wrong, Hope this helps
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Answer:
The coldest planets are Pluto, Neptune, Jupiter, Mars, Saturn and Uranus. Then the warmest planets are Mercury, Venus and Earth
Explanation:
The hottest planet in the solar system is Venus with the average temperature of 464 degree Celsius and the coldest planet in the the solar system is Pluto with an average temperature of -225 degree Celsius.
The pile up of sand and silt at the site where a river discharges into the ocean forms
Lagoon
Reef
Delta
Answer:
Delta
What's a Delta?A delta is the term used for when a river cannot carry sand. The river builds up so much sand that the sand will stay piled up and discharge into the ocean.
100 points!!-What is the purpose of dialysis?
Dialysis is not necessary when kidney system is failing.
Dialysis is the process of filtering the blood with a dialysis machine.
Dialysis is a process that causes a positive feedback loop in homeostasis.
The purpose of Dialysis:
Dialysis ia a proceduer to remove waste product and excess fiuid from the blood when the kidneys stop working properly.
Explain why Neil Shubin thinks Tiktaalik says something about our own bodies? (in other words – why the Inner Fish title for the book?)
Answer:
Neil Shubin bases his argument that the anatomy of Tiktaalik is relevant to that of humans by discussing specific features of the anatomy of Tiktaalik that vary from typical fish anatomy and correspond to features of the human body. For example, he points out that Tiktaalik has a neck that is able to bend independently of the rest of the body, unlike fish, and like all terrestrial vertebrates, including humans. Therefore, the evolutionary history of humans can be traced to an organism similar to Tiktaalik, resulting in the concept of the "inner fish."
Explanation:
2. Fill in the table below by writing the complementary strand of DNA that would be formed by each template strand. (4 points) Hint: C pairs with G, and T pairs with A.
Answer:
A - T pairs are connected by 2 hydrogen bonds, G - C pairs are connected by 3 hydrogen bonds
1 oak tree - insects -tree creeper
If you drew a pyramid of biomass for this food chain, what do you think it would look like? How would it compare with the pyramid of numbers? Explain any differences that you would see.
5. Which of the four products that raw cotton is separated into is used in livestock
feed?
A. Cottonseed
B. Cotton motes
C. Cotton burrs
D. Both A & B
Answer:
A. Cottonseed
Explanation:
Feeding whole cottonseed to beef cattle can be an economical and effective way to supplement energy, fat, and protein in their diets. As cotton is ginned, lint, debris, and cottonseed are separated.
True or False? It is safe to look at the sun during a partial solar eclipse because it is
mostly covered.
Answer: False
Explanation:. It is never safe to look at a partial solar eclipse without proper safety equipment or techniques.
What is the probability that parents with genotypes Ee and ee will have a child with attached earlobes? Explain.
Answer:
50% or 2/4
Explanation: ee
Ee
Ee Ee
ee ee
Mode of(Blank)
for unicellular organism (like bacteria)
Explanation:
Mode of(Blank)
for unicellular organism (like bacteria)
Carla wants to be a forensic entomologist. What is it that MOST likely interests Carla?
OA
blood and tissues
OB. fingerprints
OC.
bones
OD.
insects
If Carla wants to be a forensic entomologist, then she is MOST likely interested in insects (Option D).
What is the work of a forensic entomologist?A forensic entomologist is a professional that may be very useful to analyze police and crime cases by studying evidence related to insects that may remain at the crime scene and providing different types of data such as the date of death.
Therefore, with this information, we can conclude that forensic entomologists can be very useful in a police case and use insects to collect different types of evidence.
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okay need some helpppppppppp
Answer:
They reproduce.
Explanation:
G
Some desert plants produce groups of seeds
where only a small portion of the group germinates
each year. Which statement best explains how this
type of seed germination affects the probability
that these desert plants will reproduce?
The probability that these deserts plants will reproduce depends on the favorable environmental conditions affecting each seed group.
What are seeds?Seeds are reproductive parts of the plant containing the embryo which will develop into the new plant under favorable environmental conditions.
Xerophytes or desert plants are plants which grow where there is limited water.
In order to adapt to these conditions, some desert plants produce groups of seeds where only a small portion of the group germinates each year.
Therefore, the probability that deserts plants will reproduce depends on the favorable environmental conditions.
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Bacteria that typically reside in the large intestine vagina mouth and other body parts prevent blank from taking up residence
Answer:
chemical enzymes
Explanation:
When an object is seen clearly under the microscope, it is said to be??
describe how a typical cell is
strctured to execute its function
Answer:
it has a nucleus which controls the activities of the cell & is the site of DNA replication & stores genetic info.
it also has mitochondria which are the site of aerobic respiration
a cell-surface membrane which controls what enters & exits the cell
it also has ribosomes which are the site of protein synthesis
Explanation:
HELLLLLLPPPPPPPPPPPP
Answer:
because the sea level only rise when the glacier melts and when the glacier melts then the shape of the earth changes
what is biology give defecation with example also (only pakistani and indians)
What statement best explains why evidence of glaciers appeared in south africa millions of years ago
Answer:
Theory of continental drift
Explanation:
A small population of native red birds lived in a habitat that did not undergo changes for a long period of time. The birds were geographically isolated from other red birds. Predict the effects of natural selection on this population of birds.
The red birds would develop traits that would help them to be better suited.
The population of the isolated red birds would have less genetic variation than the parent population.
This population of red birds would continue to have a similar genetic makeup to the native population.
Only specific alleles of traits would increase in the red birds.
Answer:
The population of the isolated red birds would have less genetic variation than the parent population.
Explanation:
i took the test
Answer:
The population of the isolated red birds would have less genetic variation than the parent population.
Explanation:
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the breakdown of phospho-creatine by creatine kinase
generates ATP more rapidly than any other mechanism
occurs in the cytosol or requires oxygen
The breakdown of phospho-creatine by creatine kinase neither occurs in the cytosol (cytoplasm) nor requires oxygen.
What is creatine kinase?Creatine kinase (CK) is a crucial catalytic enzyme required to catalyze the conversion of phosphocreatine.
During this process of conversion, ATP (which is considered the energy coin of the cells) is generated.
Creatine kinase (CK) is a fundamental enzyme to produce ATP in a quick mode and thus generate energy.
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How many day in the year are there?
Answer:
365 days are in a year.
Explanation:
Which arrow on the diagram above represents the cycling of carbon through photosynthesis?
Answer:
Arrow #1
Explanation:
Arrow #1 is correct. This arrow represents the tree intaking a substance. Trees intake carbon and use it during photosynthesis, the process which provides plants with food.
Arrow #2 is incorrect. The arrow represents something leaving the animal. While animals expel carbon, it is not being cycled through photosynthesis. Animals do not undergo photosynthesis; rather, they use carbon for cellular respiration.
Arrows #3 and #4 are incorrect. These arrows represent something leaving the ground. While carbon is released from soil, the ground does not undergo photosynthesis.
Arrow #5 is incorrect. This arrow represents something leaving the tree. Plants do not expel carbon, they absorb it. This arrow most likely represents oxygen being expelled as a byproduct of photosynthesis.
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Which of these statements is the most correct regarding GENOTYPE?
A. The genotype is the combination of the two alleles that are inherited from your parents.
B. The genotype is the physical appearance of the trait determined by a certain phenotype.
C. The genotype is the allele that you inherit from your mother.
D. The genotype of a trait does not influence the phenotype at all.
The starfish has 36 chromosomes. How many chromosomes do you expect each new starfish to have?
Answer:
36 because chromosome comes of from father 18 and from mother 18 in equal number so the new one will have 36
Match the correct ones together
Hello-
The Biosphere option would match with the answer concerning plants (the bottom right box) since the biosphere concerns living things.
The Hydrosphere option would match with the answer concerning rain (the middle right box). Hydro = water.
The Lithosphere option, then, would go with the last remaining answer, concerning volcanoes (the top right box).
I hope this answers your question.
The shape of cells doesn't matter when it comes to doing their jobs.
True
False?
Answer:
true, because there are the basis of life
describe photosynthesis
Answer: photosynthesis is a process in which light energy is converted to chemical energy and used to produce organic compounds
Explanation:
Photosynthesis is the process through which plants make their own food using Sunlight, Groundwater and Carbon Dioxide.
Explanation:In the Chloroplast of plant cell, there is a green pigment known as chlorophyll. The chlorophyll captures the sunlight and with the help of soil water and Carbon Dioxide present in environment, it creates Carbohydrate which is Glucose (a form of sugar).
The above mechanism can be compressed in a single reaction given below.
[tex] \sf \: 6CO_2 +6H_2O \xrightleftharpoons{photosynthesis} C_6H_{12}O_6 + 6O_2[/tex]
The above reaction along with photosynthesis also explains how plants Convert toxic Carbon Dioxide to life saviour Oxygen.
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