Which of the four nitrogen bases of DNA is the most important in the organism’s ability to generate energy to power cellular processes?


Guanine

Adenine

Thymine

Cytosine

Answers

Answer 1
The answer to this is Adenine. 
Answer 2

The correct answer is adenine.

A nitrogen-containing base or nitrogenous base refers to an organic molecule with a nitrogen atom, which possesses the chemical features of a base. The prime biological role of a nitrogenous base is to combine with the nucleic acids together.

Adenine is a nucleobase and its derivatives exhibit numerous functions in biochemistry including cellular respiration, in the form of both the cofactors NAD and FAD and the energy-rich adenosine triphosphate.



Related Questions

What do fungi and arthropods have in common?
a.both groups are commonly coenocytic.
b.the haploid state is dominant in both groups.
c.both groups are predominantly saprobic in nutrition.
d.the protective coats of both groups are made of chitin.
e.both groups have cell walls?

Answers

The correct answer is d: 'the protective coats of both groups are made of chitin'
Chitin is a long-chain polymer derivative of glucose, with a structural function in various groups of animals and plants, such as of cell walls of fungi, exoskeletons of arthropods and the scales of fish. It can be compared in function to keratin found in our hair and nails.
Final answer:

Fungi and arthropods both share the characteristic of having chitin in their protective layers; fungi in their cell walls, and arthropods in their exoskeletons.

Explanation:

The commonality between fungi and arthropods is chitin in their protective layers. While both fungi and arthropods are diverse groups with characteristics unique to each, they share the trait of having structures composed of chitin. Fungi have chitin in their cell walls, which provides rigidity and structural support. This is analogous to arthropods, which have an exoskeleton also made of chitin, a tough carbohydrate that lends them their characteristic rigidity and protection.

Therefore, the correct answer to the question is 'd. the protective coats of both groups are made of chitin.' This is a distinctive feature they share, compared to other characteristics where they differ, such as their predominant nutrition form or the dominance of the haploid state in their life cycles.

True or false? the endosperm tissue that nourishes the developing plant has the same nutritional characteristics regardless of the plant species. view available hint(s)

Answers

that would be false :)

An ecologist is studying the painted turtle population in a small pond. at the beginning of the year, there are 100 individuals. over the course of a year, 40 turtles are born and 60 die. there is no migration. what is the growth rate (r) of the painted turtle population?

Answers

To answer this question, first calculate the birth rate. Out of 100 individuals, 40 were born. Therefore, the birth rate is: 
40/100 = 0.4

Then calculate the death rate. Out of 100 individuals, 60 died. Therefore the death rate is:
60/100 = 0.6

Finally, subtract the death rate from the birth rate to obtain the growth rate:

0.4 - 0.6 = -0.2

Therefore, in this case, the growth rate is negative and the population is in decline.

An 80-year-old client with a history of coronary artery disease is admitted to the hospital for observation after a fall. during the night the client has an episode of paroxysmal nocturnal dyspnea. in what position should the nurse place the client to best decrease preload?

Answers

Orthopneic

The client's paroxysmal dyspnea was probably caused by sleeping in bed with the legs at the level of the heart; this position increases venous return from dependent body areas, increasing the intravascular volume. Sitting up and leaning forward while keeping the legs dependent slows venous return as well as increases thoracic capacity. Although the contour position elevates the client's head, it does not place the legs in a dependent enough position to substantially decrease venous return. The recumbent position is contraindicated. Venous return increases when the lower extremities are at the level of the heart. Also, the pressure of the abdominal organs against the diaphragm decreases thoracic capacity. The Trendelenburg position is contraindicated. Venous return increases when the lower extremities are higher than the level of the heart. Also, the pressure of the abdominal organs against the diaphragm decreases thoracic capacity.

True or false: student loans often don't require you to start paying them back until after you've completed the course(s).
a.true
b.false

Answers

That would be true you don't have to pay them back until you have completed your course

Which of these statements is true for restriction enzymes? each restriction enzyme is able to make a staggered cut at its recognition site. a given restriction enzyme will always recognize the same dna sequence, but it will cut differently depending on the species of origin of the dna. a different restriction enzyme must be used to open the vector dna than to excise the gene sequence to be cloned. any restriction enzyme can cut any piece of dna. restriction enzymes are useful in genetic engineering when they make staggered cuts in dna?

Answers

the 1st one is correct.:) 

A caregiver of a toddler has called the poison control nurse to report that the child licked a small amount of petroleum jelly. the caregiver states that the toddler is sitting on the floor, watching a cartoon, and playing with a toy. which information will the poison control nurse provide?

Answers

The correct answer is to "dilute with milk and water". The patient should not be induced to vomit to prevent aspiration as this can lead to another condition which is aspiration pneumonia. The patient should be given either a glass of milk or a glass of water for ingestion of petroleum jelly.

The correct answer is to "dilute with milk and water". The patient should not be induced to vomit to prevent aspiration as this can lead to another condition which is aspiration pneumonia.

What is pneumonia?

Pneumonia is a respiratory disease which affects the lungs. Pneumonia is an infection that inflames the air sacs in one or both lungs.

The air sacs may fill with fluid or pus (purulent material), causing cough with phlegm or pus, fever, chills, and difficulty breathing. A variety of organisms, including bacteria, viruses and fungi, can cause pneumonia.

Pneumonia can range in seriousness from mild to life-threatening. It is most serious for infants and young children, people older than age 65, and people with health problems or weakened immune systems.

Therefore, The correct answer is to "dilute with milk and water". The patient should not be induced to vomit to prevent aspiration as this can lead to another condition which is aspiration pneumonia.

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______ are structures that allow for one-way blood flow through the heart.

Answers

Valves are structures that allow for one-way blood flow through the heart.
The answer is valves. Valves exist all throughout the cardiovascular system, but are especially important in the heart. 

Scientist classify plants based on their height and how they reproduce

Answers

The statement given above is FALSE.
Scientists do not classify plants based on their height and method of production but rather scientists classify plants based on HOW THEY TRANSPORT WATER AND NUTRIENTS AND HOW THEY REPRODUCE.
Based on water and nutrients transportation, plants are classified as vascular and non vascular plants. Based on their manner of reproduction, plants are classified as sexual and asexual.

The region of our solar system between mercury and mars has very few asteroids, while the region between mars and jupiter has many asteroids. based on what you have learned, what is the most likely explanation for the lack of asteroids between mercury and mars?

Answers

The shorter distance between out planets

A warning sign of the female athlete triad includes:

Answers

A warning sign of a female athlete triad includes fatigue, weight loss, and bone loss. 

The permanent cessation (stopping) of menstrual cycle is known as

Answers

Menopause is the Answer

Each cell expresses, or turns on, only a fraction of its genes. the rest of the genes are repressed, or turned off. the process of turning genes on and off is known as gene regulation. gene regulation can occur at any point during gene expression, but most commonly occurs at the level of _________, when the information in a gene's dna is transferred to mrna.

Answers

the answer is ....at the level of transcription

The process takes place during the transcription only when the genes are being switched on and switched off on the basis of the requirement of genes that are being synthesized on the basis of requirement as well.

What are various models that explain the functioning of the same ?

It is Lac operon model that is by Jacob and Monad that explains the various mechanisms on the basis of the requirement for the same.

The central dogma is like that there is synthesis of RNA from DNA through the transcription and the translation through the mRNA into the proteins but that is through the ribosomal units where that is happening.

In the case of the transcription there is a specific unit that is like that when the requirement is there then the switch is on but as the requirement is gone then they automatically gets switched off.

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When lung tissue retains an excessive amount of fluid, this is called:?

Answers

This is called pulmonary edema. The accumulation of fluid in the tissue and air spaces of the lungs can can occur either because of a failure of the left heart ventricle to completely remove blood from pulmonary circulation or because of an injury to the lung tissue. Pulmonary edema leads to impaired gas exchange and can result in respiratory failure.

Which symptoms should the nurse expect to observe during the physical assessment of an adolescent girl with severe weight loss and disrupted metabolism associated with anorexia nervosa?
a. lowered body temperature and brittle nails
b. tachycardia and tachypnea
c. heat intolerance and high blood pressure
d. dysmenorrhea and oliguria?

Answers

a lowered body temperature..........
I would say A, lowered body temperature and brittle nails.

Besides, severe weight loss, decreased blood pressure, dry skin, brittle nails, altered metabolic activity, and presence of lanugo hair also the symptoms of Anorexia Nervosa.

Give one example of a bird and one example of a reptile. Describe one defining characteristic of each. What is a significant similarity between birds and reptiles?  

Answers

Answer:

Birds, such as owls and eagles, have feathers and thin, hollow bones. Reptiles, such as snakes and lizards, have scaly skin and are ectothermic animals. Both possess a unique kind of egg called the amniotic egg.

!Hope It Helps!

The average threshold for human hearing is the tick of a watch from ______ under very quiet conditions.

Answers

I believe the answer is 20 feet. According to McBurney and Collings, the average threshold of human hearing is the tick of a watch from 20 feet in very quiet condition.
The human hearing range is a description of the pitches and loudness levels a person can hear before feeling discomfort. There is a variety of sounds in our environment, ranging from faint sounds like birdsong and rustling leaves to louder sounds like music, yelling, and industrial noise.

Which one of these is characteristic of cancer cells ?

Answers

Cancer cells do not undergo apoptosis, which is where where the cells are signaled to self destruct. They do not respond to growth inhibitors. The only answer choice left is that they exhibit metastasis, which they do.

Answer:

The answer is A

undergo apoptosis

Explanation:

I hope this helped

What is unique about transduction compared to normal bacteriophage infection? what is unique about transduction compared to normal bacteriophage infection? the bacteriophage takes fragments of the cell with it during transduction. the bacteriophage does not erupt from an infected cell during transduction. transduction transfers dna from the chromosome of one cell to another?

Answers

The correct answers are:
(1) The bacteriophage takes fragments of the cell with it during transduction
(2) The bacteriophage does not erupt from an infected cell during transduction.
(3) Transduction transfers DNA from the chromosome of one cell to another.


Transduction is the process wherein a bacteriophage (a virus) injects foreign DNA to be incorporated in the bacterial genetic material. Usually the most common differentiating feature between bacteriophage infection and transduction is that infection is usually destructive and lytic as the bacteriophage uses the bacteria for its own self-replication then it will erupt from the bacteria.
Final answer:

Transduction is a mechanism of horizontal gene transfer in bacteria where the bacteriophage takes fragments of the infected cell's DNA and transfers it to another bacterium. This is unique compared to normal bacteriophage infection where the bacteriophage does not take fragments of the cell with it and it erupts from the infected cell.

Explanation:

Transduction is a mechanism of horizontal gene transfer in bacteria where genes are transferred through viral infection. It is unique compared to normal bacteriophage infection because, during transduction, the bacteriophage takes fragments of the infected cell's DNA and transfers it to another bacterium. This results in the transfer of DNA from the chromosome of one cell to another. In normal bacteriophage infection, the bacteriophage does not take fragments of the cell with it and it erupts from the infected cell.

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The survival of some plants depends on their ability to have seeds transported to a favorable environment. Describe three different ways seeds can be transported from one location to another?

Answers

Three different ways in which seeds can be transported from one location to another are;
1. Through wind – Seeds such as sycamore and dandelions have wings and fruits that can be easily blown about and carried over distances by winds.
2. Through water – Some seeds that float in water are carried by water from one location to another. An example is the fruit of original coconut palms on South Sea Islands which were transported there from the mainland by ocean currents.
3. Through explosions - Some plants such as peas and laburnum disperse their own seeds. Their pods become dry and split open suddenly with a large force which throws their seeds to another location.

Answer:

The three different ways are mentioned as under:

1) Wind dispersal

2) Dispersal by water

3) Dispersal by animals

Explanation:

1) Wind dispersal: Wind dispersal is very common mode of seed transfer from one plant to another plant. Seeds of some plants are light in weight. Therefore, they can be easily blown away from one plant at a particular region to another region which is distantly located. Some examples of such plants are kauri, maple trees etc.

2) Water dispersal: The seeds of some plants are dispersed by water. In this way of dispersal, the seeds are blown away by flowing water. This mode of seed dispersal is not very common. The seeds of vallisneria, sea grass etc. are dispersed by water.

3) Dispersal by animals : Seeds can be dispersed by animals too. When animals pluck the fruits from a plant and eat the fruit, the seed of that fruit enters their digestive tract. When those animals excrete, that time the seed comes out of their digestive tract and grow as an independent plant. Some animals pluck the fruit and eat the pulp and throw the seed at far away place from the tree. That seed then grows as an independent tree at a distantly located area. Examples are : Mango tree, raspberry etc.

A patient who has been diagnosed with tuberculosis states, "i am not taking my medication, because i cannot afford it." which ethical practices does the nurse demonstrate by implementing a social service consult to assist the patient in obtaining the medication needed for treatment? select all that apply.

Answers

The nurse who implements a social service consult to assist a patient, who cannot afford his/her medication in obtaining the medication needed for treatment is demonstrating:
1. Patient Advocacy
2. Community Advocacy

Although the actions of the nurse, as described above will ensure that the patient obtains the required medication, it cannot in any way ensure the patient's adherence to the treatment plan.

Match each field of study to the correct piece of evidence. Tiles molecular biology comparative anatomy developmental biology Pairs embryo of a pig and a calf arrowBoth DNA of a pig and a calf arrowBoth limb structure of a pig and a calf arrowBoth

Answers

molecular biology - DNA
development biology - embryo
comparative anatomy - limb of pig and calf

Ans.

Molecular biology can be defined as a branch of biology that includes study of molecular basis of cells, interaction between biomolecules, such as proteins, DNA, and RNA, their synthesis, functions, and regulation. Thus, it is correctly matches with 'DNA of a pig and a calf arrow.'

Comparative anatomy involves study of similarities and dissimilarities between the anatomy of organisms of different species. Thus, it is correctly matches with 'limb structure of a pig and a calf arrow.'

Development biology is a branch of biology, which concerns the growth and development of organisms. Thus, it is correctly matches with 'embryo of a pig and a calf.'

How long would it take to walk to florida from pennsylvania?

Answers

It Would take 369 Hours

The distance and time it takes to walk from Pennsylvania to Florida can vary depending on the specific starting and ending locations, the route chosen, and the walking pace of the individual.

However, to provide a rough estimate, let's consider a popular route from Philadelphia, Pennsylvania, to Miami, Florida, which covers a distance of approximately 1,180 miles (1,900 kilometers) along major highways.

The average walking speed for a person is typically around 3 to 4 miles per hour (4.8 to 6.4 kilometers per hour). Assuming an average walking speed of 3.5 miles per hour (5.6 kilometers per hour), we can calculate a basic estimate of the walking time:

Distance to walk: 1,180 miles

Walking speed: 3.5 miles per hour

Time = Distance / Speed

Time = 1,180 miles / 3.5 miles per hour

Time ≈ 337.1 hours

Time in days ≈ 337.1 hours / 24 hours per day

Time in days ≈ 14.05 days

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The four Galilean moons were discovered in the year 1610, but the next moon of Jupiter to be discovered, Amalthea, was not found until 1892. The distinction that was most responsible for the early discovery of the Galilean moons was their: A. orbital speeds. B. orbital periods. C. average orbital radii. D. diameters.

Answers

Final answer:

The early discovery of the Galilean moons was due to their orbital periods, which were observed to be different by Galileo. This discovery challenged the geocentric view and showed that objects could revolve around a planet other than Earth.

Explanation:

The distinction that was most responsible for the early discovery of the Galilean moons was their orbital periods. When Galileo observed these moons with his telescope, he noticed that they had different orbital periods, ranging from just under 2 days to about 17 days. This discovery was significant because it showed that objects could revolve around a planet other than Earth and that there could be centers of motion that are themselves in motion.

The peak of synaptic overproduction in the _____ takes place at around one year of age.

Answers

The answer is prefrontal cortex. To simplify, the top of synaptic overproduction in the prefrontal cortex takes place at around one year of age. The prefrontal cortex is the area of the brain where higher-level thinking and self-regulation occur. In addition, the prefrontal cortex is a part of the brain situated at the front of the frontal lobe. It is concerned in a diversity of complex behaviors as well as planning and greatly contributes to character development in which the prominent version of prefrontal cortex purpose is that single neurons within the prefrontal cortex uphold illustrations of task-relevant stimuli in working memory. 

When an herbivore eats a plant, what happens to 90% of the energy obtained from that plant?

Answers

I believe that about 90% of the energy obtained from the plant is lost inform of heat energy.The total energy passed from one level to the next is only about one-tenth of the energy received from the previous organism. This means that herbivores will only get about ten percent of the energy that the plant gets from the sun. The remainder of the plant's energy is unusable as energy by the animal. Therefore, as you move up the food chain, there is less energy available.

One group of reptiles, exemplified by the fossil archaeopteryx, led to the evolution of ________.

Answers

The correct answer to this question is modern-day birds. Archaeopteryx is generally regarded as the oldest known bird and the transition between dinosaurs and birds. This was a genus of bird-like dinosaurs that lived during the Late Jurassic 150 million years ago.

Traits will sort themselves into gamete independently of what other traits are doing.” This is Mendel’s law of __________.

Answers

"Traits will sort themselves into gamete independently of what other traits are doing."  This is Mendel's law of Independent Assortment. 

Answer:

d.  independent

Explanation:

A registered nurse is teaching a nursing student about lawrence kohlberg's theory of moral development. which information provided by the registered nurse regarding postconventional reasoning needs correction?

Answers

The correct answer is that "In this level, emphasis is given on social rules and a community-centered approach."
Lawrence Kohlberg's tiers of moral development represent an adaptation of a psychological theory initially conceived by the Swiss psychologist Jean Piaget. Kohlberg started out paintings in this topic whilst a psychology graduate pupil at the university of Chicago in 1958, and improved upon the concept at some point of his lifestyles.

Milk has a pH of 6. Tomato juice has a pH of 4. Therefore, tomato juice is:
a.20 times more acidic than milk.
b.100 times more acidic than milk.
c.100 times less acidic than milk.
d.20 times less acidic than milk

Answers

B) 100 times more acidic :)

Tomato juice is 100 times more acidic than milk since it has a pH of 4 compared to milk's pH of 6, and lemon juice is 100 times more acidic than tomato juice as it has a pH of 2.

The pH scale is logarithmic, meaning that each whole pH value below 7 is exponentially more acidic than the one above it by a factor of 10. Therefore, a pH difference of 2, such as from pH 6 to pH 4 is 10 x 10, or 100 times more acidic. In this case, tomato juice with a pH of 4 is 100 times more acidic than milk with a pH of 6. Answering the student's question, tomato juice is 100 times more acidic than milk, which corresponds to option b.

Comparing Lemon and Tomato Juice

When comparing the hydrogen ion concentration of lemon juice at pH 2 to tomato juice at pH 4, the difference is 2 pH units. This indicates that lemon juice's hydrogen ion concentration is 100 times higher than that of tomato juice, which corresponds to option c above.

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