The backbone of DNA and RNA is composed of sugar molecules. DNA is double-stranded due to interactions between adenine, cytosine, guanine, and thymine, which are nitrogen bases. Uracil is a nitrogen base found in RNA.
What are DNA and RNA?DNA and RNA are nucleic acids that are composed of linear chains of nucleotides. In RNA, the Uracil nitrogen base in the nucleotide sequence replaces the Thymine nitrogen base found in the DNA sequence. Both nucleic acids contain pentose sugar, i.e., ribose in RNA and deoxyribose in DNA.
Therefore, we can conclude that DNA and RNA are formed by nucleotides that contain different nitrogen bases and sugar pentose molecules.
Complete question:
Fill in the blank. The backbone of DNA and RNA is composed of ___. DNA is double-stranded due to interactions between adenine, cytosine, guanine, and thymine, which are _____. Uracil is a ___
Learn more about DNA and RNA here:
https://brainly.com/question/4701650
#SPJ1
prokaryotes divide by binary fission, a form of asexual reproduction in which?
Answer:
Prokaryotic cells can reproduce asexually only through binary fission. Binary fission is the process by which a bacterial cell splits into two identical daughter cells. This is a very fast process and contributes to the rapid growth and replication of bacteria.
Explanation:
Answer:
I agree with the person above this question ^^^^
If the conservative model had been correct, how many generations of bacterial cell division would have had to pass before meselson and stahl would have observed evidence of a band in the cscl gradient corresponding to a hybrid dna molecule containing both 14n and 15n?.
DNA from the first generation has strands that are 15N/14N,One form of DNA in the second generation contains 15N/14N strands, whereas the other type has 14N/14N strands.
Explanation:
One strand of the parental type and another newly generated strand that is formed during DNA replication are both present in the newly formed dsDNA after replication. Semi-conservative DNA replication uses two strands, one of which is paternal and the other fresh.
E. coli was cultured on 14N media and already has DNA that has been tagged with 15N and 15N.Accordingly, during DNA replication, the first generation contains hybrid 15N/14N DNA, wherein one strand (15N) is inherited from the parents and the other (14N) is freshly generated, and the second generation has both hybrid 15N/14N DNA and 14N/14N DNA. It was not possible to find any DNA with 15N/15N strands.
To know more about DNA and Generations Visit here :
https://brainly.com/question/15568680
#SPJ4
In the Northern Hemisphere, climate scientists observe seasonal changes in carbon dioxide concentration with the highest levels measured in May and the lowest levels measured in October. Hypothesize how photosynthesis can affect these changes. Explain your answer in three to five sentences
A plausible hypothesis associated with seasonal changes in carbon dioxide concentration being the highest levels measured in May and the lowest levels measured in October is that the rate of photosynthesis will be higher in May because carbon dioxide is a reactant.
What is the rate of photosynthesis?The rate of photosynthesis refers to the amount of photosynthetic products that are generated in a given unit of time, which are generally measured as units of biomass both for plants and algae.
The rate of photosynthesis depends on the presence of reactants for this process which includes sun light and also carbon dioxide, which is a fundamental substance in order to produce carbohydrates during this process.
Therefore, with this data, we can see that carbon dioxide is a reactant of photosynthesis and therefore its concentration is fundamental to carry out this process.
Learn more about carbon dioxide in photosynthesis here:
https://brainly.com/question/303300
#SPJ1
In the rock cycle, the geosphere and the
interact when rock particles are transported by a flowing river. The geosphere and the
interact when dead organic matter gets mixed with layers of sediments.
According to the research, the correct terms to complete the text are Hydrosphere and biosphere. In the rock cycle, the geosphere and the hydrosphere interact when rock particles are transported by a flowing river. The geosphere and the biosphere interact when dead organic matter gets mixed with layers of sediments.
What is the rock cycle?It is a series of geological processes by which one of the three large groups of rocks from the generation of magma inside the Earth melting the pre-existing rocks.
In this sense, the external dynamics, caused by solar energy and gravity, aims to model said rocks, this modeling is achieved thanks to the action of geological agents (biosphere, hydrosphere and geosphere).
Therefore, we can conclude that in the rock cycle, through the interaction of the geosphere, the hydrosphere and the biosphere, the different rock particles emerge and materialize.
Learn more about rock cycle here: https://brainly.com/question/15619429
#SPJ1
in the last few decades, the use of antibiotics and antibacterial cleaning products has increased. what consequences are being seen now as a result of the overuse or misuse of antibiotics?
consequences of the overuse or misuse of antibiotics.
Sir Alexander Fleming first mentioned the issue of antibiotic misuse in 1945 when he predicted that "the public would desire [the medicine] and thereafter usher in an era of excesses." Antibiotic usage undoubtedly promotes the emergence of resistance. Epidemiological research has shown a link between the use of antibiotics and the establishment and spread of resistant bacterial species. Genes in bacteria can be inherited from close relatives or acquired from unrelated individuals via mobile genetic components like plasmids. Through this horizontal gene transfer (HGT), antibiotic resistance may spread between several bacterial species.Additionally, resistance can evolve on its own through mutation. Drug-sensitive rivals are eliminated by antibiotics, leaving drug-resistant microorganisms remaining to proliferate through natural selection. Worldwide, antibiotics are overprescribed despite warnings against overuse.To know more about Antibiotic visit : https://brainly.com/question/17988226
#SPJ1
the cholesterol synthesized by cells uses which component of the glycolytic pathway as a starting point? glucose acetyl coa pyruvate carbon dioxide
Glucose component of the glycolytic pathway as a starting point.
The chemical formula for glucose is C6H12O6, making it a simple sugar. The most common type of monosaccharide, a subclass of carbohydrates, is glucose. The most prevalent carbohydrate in the world, cellulose, is created primarily by plants and the majority of algae during photosynthesis from water and carbon dioxide. This process uses energy from sunlight.
Throughout all organisms' energy metabolism, glucose is by far the most significant energy source. In both plants and animals, glucose is stored as a polymer, mostly as starch and amylopectin in plants. Animals' blood contains glucose, which circulates as blood sugar. D-glucose, which occurs naturally, is more physiologically active than l-glucose, which is manufactured synthetically in much smaller quantities.
Learn more about Glucose here:
https://brainly.com/question/17132249
#SPJ4
Apricots, butternut squash, cantaloupe, carrots, mangoes, peaches, pumpkin, and sweet potatoes are rich in.
Apricots, butternut squash, cantaloupe, carrots, mangoes, peaches, pumpkin, and sweet potatoes are rich in Beta-carotene.
Beta-carotene is a pigment observed in flora that offers them their caseation. The call beta-carotene is derived from the Latin call for carrot. It offers yellow and orange culmination and greens their wealthy hues. Beta-carotene is likewise used to caseation ingredients consisting of margarine.
In the frame, beta-carotene converts into nutrition A (retinol). We want nutrition A for true imaginative and prescient and eye health, for a robust immune system, and for wholesome pores and skin and mucous membranes.
Taking large doses of nutrition A may be toxic, however your frame most effective converts as an awful lot nutrition A from beta-carotene because it needs. That method beta-carotene is taken into consideration a secure supply of nutrition A.
However, an excessive amount of beta-carotene may be risky for folks that smoke. Getting excessive quantities of both nutrition A or beta-carotene from food, now no longer from supplements, is secure.
Learn more about Beta-carotene here https://brainly.com/question/4339695
#SPJ1
What could be the right answer for this question?
The following traits represent color blindness as an X-linked trait. Option D.
Most people who are colorblind cannot distinguish between certain shades of red and green. Very rarely colorblind people cannot distinguish between shades of blue and yellow. Certain eye diseases and some medications can also cause color blindness. Color blindness is caused by a lack of color-sensing pigments in the cones of the retina, the neural layer at the back of the eye.
People who are colorblind have difficulty seeing red green blue, or mixtures of these colors. The different types of abnormal conditions include protanomalies, which are insensitive to red light deutenomalies which are insensitive to green light the most common form of colorblindness, and tritanopia which is insensitive to blue light. Marie very rare is there.
Learn more about Color blindness here:-https://brainly.com/question/1601607
#SPJ1
5. Maintained by nervous and chemical control.
A. Respiration B. Reproduction C. Excretion D. Regulation
6. The guard cells of a plant leaf swelling shut to prevent water loss. This
keeps the plant hydrated and prevents dehydration.
A. Respiration B. Nutrition C. Homeostasis D. Growth
7. In plants glucose is converted to a large sugar molecule known as
cellulose. In humans, glucose is converted to a large sugar molecule
known as glycogen and stored in the liver. What life function describes
these processes?
A. Growth B. Nutrition C. Homeostasis D. Synthesis
8. The life process which converts chemical energy into a usable form.
A. Reproduction B. Respiration C. Synthesis D. Homeostasis
9. In which process are simple materials chemically combined to form more
complex materials?
A. Respiration B. Reproduction C. Nutrition D. Synthesis
Respiration, excretion , regulation , respiration, homeostasis, growth are maintained by Nervous system.
What what is a neurological system?The brain, spinal cord, and an intricate web of nerves make up the nervous system. The brain and the body communicate with one another through this system. All bodily processes are under the control of the brain. The spinal cord exits the brain through the back and descends.
Nutrition , growth , homeostasis, synthesis all are life functions. Respiration , synthesis , respirations are simple materials to chemically combined to form more complex materials.To learn more about Neurological system refer
https://brainly.com/question/13193407
#SPJ13
this ecg indicates an issue with which electrical node(s) and/or mechanical event(s)? (select all that apply). a. sinoatrial node b. ventricular systole c. atrial relaxation d. atrial depolarization e. purkinje fibers f. atrioventricular node
Option A, B, E,F; sinoatrial node,ventricular systole,purkinje fibers and atrioventricular node all indicate an issue with electrical and/or mechanical events.
Specialized pacemaker cells in the heart initiate the electrical depolarization and repolarization sequence. The term "inherent rhythmicity" or "automatity" refers to this characteristic of heart tissue. The atrioventricular node (AV node), the bundle of His, the right and left bundle branches, and Purkinje fibers are some of the conducting channels through which the electrical signal, which is produced by the sinoatrial node (SA node), spreads to the ventricular muscle.
The contractile cells constrict when the electrical signal of a depolarization reaches them. The cardiac cells relax when the repolarization signal reaches them. Thus, the mechanical heart beating is a result of electrical signals. The SA node starts each electrical and mechanical cycle as the heart's natural pacemaker. The electrical impulse that travels through the atrial muscle as the SA node depolarizes causes the muscle to contract.
Atrial contraction follows the depolarization of the SA node as a result. The internodal fibers also allow the SA node impulse to reach the atrioventricular node (AV node). (Because of the nonconducting tissue dividing the atria and ventricles, the wave of depolarization does not immediately extend to the ventricles.) When the atria contract, the electrical signal is delayed in the AV node for around 0.20 seconds before being transmitted to the ventricles by the Purkinje fibers, right and left bundle branches, and bundle of His.
The electrical impulse is transmitted directly to the ventricular muscle by the Purkinje fibers, which causes the ventricles to contract (ventricular systole). Additionally, the atria and ventricles undergo repolarization of the SA node, kicking off the relaxation phase (ventricular diastole).
To learn more about ECG. Click, https://brainly.com/question/26076971
#SPJ4
Choose all that apply
Answer:
plasmids
b/c it can't have those 4 things
easynotecards which model of the lac operon correctly shows rna polymerase, lactose, and repressor protein when the structural genes are being transcribed?
Model B shows lac operon model which correctly shows RNA polymerase, lactose, and repressor protein when the structural genes are being transcribed.
For the transport and metabolism of lactose in E. coli and other bacteria, the lac operon is an operon, or a collection of genes, with a single promoter.
The Lac Operon model may be used to describe how prokaryotic genes are regulated. Here, it is possible to see how changes in physiology and the environment affect prokaryotes' ability to express certain genes. Monod and Jacob were present and saw it.
The regulatory gene generates repressor protein that binds to the operator when inductor lactose is absent. We can thus rule out all the other models in the possibilities based on this. The picture that is attached shows the illustration.
Here is another question with an answer similar to this about lac operon model: https://brainly.com/question/28197003
#SPJ4
Question correction is attached below:
Collagen is a protein found in several multicellular organisms, including
humans. Which of the following best describes the function of collagen?
A creates genetic information in cells
B builds important cellular structures.
C releases energy for short-term use
D helps to insulate against low temperatures
Answer: B builds important cellular structures
Explanation:
Collagen is a protein that provides structural support to extracellular space in connective tissues.
A is wrong because it has nothing to do with creating genetic information.
B is correct
C is wrong because collagen's purpose is not to provide energy.
D is wrong because this protein does not function to insulate against low temperatures.
marine ecosystems provide important ecological services including . group of answer choices releasing energy from tides moderating the climate being the sources of minerals releasing co2 providing transportation
Marine ecosystems provide important ecological services such as;
releasing energy from tidesmoderating the climatebeing the sources of mineralsreleasing CO₂providing transportationWhat are marine ecosystems?Marine ecosystems refer to the ecosystems that are found in water bodies that contain minerals dissolved in high concentrations.
These water bodies are known as seawater and they include oceans and seas.
Ecological services from an ecosystem are those services or benefits that are derived from a particular ecosystem.
The marine habitat contains the largest number of living organisms such as fishes, crabs, and other marine mammals.
The marine ecosystem also contains the largest volume of water as well as deposits of minerals like calcium.
The marine ecosystem is also the largest reservoir of carbon (iv) oxide, CO₂.
Learn more about marine ecosystems at: https://brainly.com/question/1788473
#SPJ1
Which one of the following is NOT part of the Cell Theory?
Group of answer choices
The cell is the basic unit of life for living organisms
All cells contain a nucleus
All cells come from existing cells
All living organisms are composed of one or more cells
If the dna content of a diploid cell in the g1 phase of the cell cycle is x , then the dna content of the same cell at metaphase of meiosis i will be.
If DNA content of a diploid cell in the g1 phase of the cell cycle is x , then DNA content of the same cell at metaphase of meiosis I will be double that is 2X
The DNA content is duplicated after G1 PHASE IN S phase therefore DNA content during the meiosis I would double that is 2X.
The DNA content of a cell in the G1 phase is 2N, known as diploid. DNA content of a cell in the G2 phase is 4N that is tetraploid. The DNA content of a cell in the S phase varies between 2N and 4N depending completely on the stage of cell replication.
14 chromosomes are present in G1phase initially. In S phase, there is no change in number of chromosomes. Therefore, 14 chromosomes is present again. There is no change at the beginning of M phase.
To know more about cell cycle, refer
https://brainly.com/question/7196669
#SPJ4
Where are the instructions that tell the cell everything it needs to survive?
To what extent do you think income level will determine a person’s access to medical treatments involving bio-technology?
Healthcare professionals can stay in touch via email smartphones SMS and more. Doctors no longer need to send letters to patients reminding them of appointments or tests. Technology has made all of this much easier and much cheaper.
The benefits of healthcare information technology IT include facilitating communication between healthcare providers. Improving drug safety tracking and reporting. Improve the quality of care by improving access to and adherence to guidelines. Intelligent technology streamlines the claims process, significantly reducing costs and dramatically reducing processing times.
This Bio-technology can automate the data collection and communication process while proving the events leading to a claim. The result is lower healthcare costs and a better customer experience. People with poor health are often unable to go to work which can significantly reduce or even affect their income. Health prolongs life.
Learn more about The Bio-technology here:-https://brainly.in/question/414053
#SPJ1
During pcr, where does the energy come from that adds the nucleotide to the growing dna strand?.
During pcr, the energy comes from the incoming nucleotides, that adds the nucleotide to the growing dna strand.
What are nucleotides?
An biological molecule known as a nucleotide has the fundamental building blocks of a nitrogenous base, pentose sugar, and phosphate.
As polynucleotides, DNA and RNA are composed of a chain of monomers with various nitrogenous bases. The execution of metabolic and physiological processes requires nucleotides.
Adenosine triphosphate, or ATP, serves as the energy standard for cells. Numerous metabolic activities require nucleotides, which combine to generate a variety of coenzymes and cofactors such coenzyme A, NAD, NADP, and others.
Therefore, the energy that adds the nucleotide to the growing Dna strand comes from the incoming nucleotides.
To learn more about nucleotides,:
https://brainly.com/question/1569358
#SPJ4
You are studying a gene that, when mutant, causes oligodendrocytes to enwrap sections of axon so that nodes of ranvier are more closely spaced. What is the likely effect on nerve impulses?.
A gene that when mutant, causes oligodendrocytes to enwrap sections of axon so that nodes of ranvier are more closely spaced will make the nerve impulses travel slower.
What is a gene?
A gene is the fundamental physical and functional unit of heredity. A gene is made up of DNA. Some genes but not all genes are also responsible as instructions for producing molecules known as proteins. About twenty thousand to twenty five thousand genes varying in different sizes are thought to be present in humans.
Every gene is present in two copies in every person, one from each parent.
Learn more about Gene here:
brainly.com/question/8832859
#SPJ4
13) What are the 5 ELEMENTS found in DNA and other Nucleic acids, like RNA?
Answer:
Nucleic acids contain the same elements as proteins: carbon, hydrogen, oxygen, nitrogen; plus phosphorous (C, H, O, N, and P). Nucleic acids are very large macromolecules composed of repetitive units of the same building blocks, nucleotides, similar to a pearl necklace made of many pearls.
five different species of warblers, seed-eating birds, live in the same species of conifer trees. all of the birds migrate to coniferous forests during the summer, and different species reside in different areas in the same tree. they feed on the seeds of the conifer trees, but the different species do not mate with each other.
Resource partitioning of the seeds reduces competition, and the five different species can live in the same tree. Thus option C is correct.
What are migrating birds?Migrating birds are defined as the regular seasonal movement of birds between breeding and wintering grounds, often north and south along a flyway.
The various species of warblers, which are seed-eating birds, live in coniferous trees and are all migratory birds. They both feed on tree seeds and live in similar environments. They are all non-residents due to their distinct migration patterns.
According to the passage, the seeds' resource partitioning reduced competition, and the five diverse species can coexist in the same environment.
Thus, Resource partitioning of the seeds reduces competition, and the five different species can live in the same tree. Thus option C is correct.
To learn more about migrating birds, refer to the link below:
https://brainly.com/question/23581258
#SPJ1
Your question is incomplete, but probably your complete question was
Five different species of warblers, seed-eating birds, live in the same species of conifer trees. All of the birds migrate to coniferous forests during the summer, and different species reside in different areas in the same tree. They feed on the seeds of the conifer trees, but the different species do not mate with each other. Which of the following best explains why the different warbler species can all have habitats in the same conifer trees?
a. Not all the warblers are residents in the forest at the same time of the year because of different migration patterns.
b. Physiological differences in beak structure allow the warblers to consume different species of seeds through symbiotic relationships.
c. Resource partitioning of the seeds reduces competition, and the five different species can live in the same tree.
d. Niche overlap occurs between the five different species, and living in the same tree increases competition for seeds.
what is the chance that among the three children in generation ii who have the dominant phenotype, one of them is aa and two of them are aa ? (hint: consider all possible orders of genotypes.)
The other three children are having dominant phenotype but only one among them is homozygous dominant. The chances of the child becoming AA is 0.25 and that of Aa is 0.50.
The phrases homozygous and heterozygous are used to characterize allele pairings. Homozygous people have two copies of the same allele (RR or rr). Individual organisms with several alleles (Rr) are referred to as heterozygous. Those who have the genotypes AA and aa are homozygotes (i.e., they have two copies of the same allele). Genotype Aa individuals are heterozygotes (i.e., they have two different alleles at the A locus).An organism is considered to be homozygous dominant if it carries the same dominant allele in two copies, and homozygous recessive if it carries the same recessive gene in two copies. If a gene has two different alleles, an organism is said to be heterozygous. Homo- means the same, but hetero- denotes difference. A specific zygote type is referred described as being -zygous.
Learn more about homozygous here:
https://brainly.com/question/376455
#SPJ4
If we are to be better stewards of God's creation, we must have a better understanding of plants and animals that share our world. True or false
Answer:
yes
Explanation:
Because we have to understand how plants and animals live their life and help live alongside them in harmony.
the half-life of a pesticide determines its persistence in the environment. a common pesticide degrades in a first-order process with a half-life of 4 days. what fraction (in decimal notation) of the pesticide remains in the environment after 10 days? enter to 4 decimal places.\
the half-life of a pesticide determines its persistence in the environment. a common pesticide degrades in a first-order process with a half-life of 4 days. 0.176 fraction (in decimal notation) of the pesticide remains in the environment after 10 days, enter to 4 decimal places.\
No of half lifes (n) = total time / half life
n= 10/4 = 2.5
Amount of pesticide remains = Ao(1/2)n
Ao is the initial amount
Amount left = Ao(1/2)2.5= Ao(00176)= 0.176 Ao
If we assume Ao=1
Then Amount left = 0.176
A chemical substance's ability to exert negative effects and travel to distant areas can be enhanced by its environmental persistence, which is a crucial feature. The pace of biological and chemical processes, such as photolysis, atmospheric oxidation, hydrolysis, and biodegradation, that remove organic substances from the environment determines how long they remain in the environment.
learn more about persistence in the environment here :
https://brainly.com/question/23125189
#SPJ4
What are the names of these two sedimentary rocks?
The body needs glucose from carbohydrates for major organs and tissues. If dietary carbohydrates are inadequate, the body utilizes other sources to provide energy. What is the only source that can not be used to directly make glucose?.
Glucose cannot be synthesized from fatty acids.
Glucose can not be made using fatty acids or ketogenic amino acids. As acetyl-CoA cannot be transformed back to pyruvate due to the one-way nature of the transition reaction, it cannot be used as a fuel.
Since pyruvate and other molecules with at least three carbon atoms are required for the body's enzymes to function in an energetically advantageous manner, acetyl CoA cannot be converted to glucose since it possesses a two-carbon acetyl group. This indicates that the Krebs cycle will continue to break down acetyl-CoA.
Fatty acids cannot be turned into glucose because they produce acetyl coenzyme A (CoA), which enters the citric acid cycle and is oxidized to carbon dioxide (CO₂).
To learn more about glucose visit the link:
https://brainly.com/question/2396657?referrer=searchResults
#SPJ4
Color-blindness is a recessive x-linked trait. If a color-blind female is and a normal-sighted male have children, what percent of the biologically male offspring will be colorblind?.
Answer:
Most commonly, color blindness is inherited as a recessive trait on the X chromosome. This is known in genetics as X-linked recessive inheritance. As a result, the condition tends to affect males more often than females (8% male, 0.5% female).
Explanation:
Please give a thanks or 5 stars if this helped!
Which summary below correctly describes what occurs during transcription?
O A DNA template is used to create an mRNA strand.
O An mRNA template is used to create a DNA strand.
O A DNA template is used to create a ribosome.
O An mRNA template is used to create a tRNA strand.
Answer: A DNA template is used to create an mRNA strand.
Explanation:
Transcription basically means a written or printed representation of something, if we connect that analogy to DNA, we are using the DNA as our template to write/create an mRNA strand out of it, basically transcribing the DNA.
Food going through the human digestive system (generally) only moves in one direction. However, In some animals, the food goes in two direction and come out of the same opening. In which animals does this happen? Why? Why would this not work for human?
Answer:
This is known as rumination and it takes place in ruminants like cow .this happens because they are herbivore which mostly eat grass and other plants so for easy digestion the food is mostly chewed by them. This would not work for humans because our diet concisest of more variety of our diet, and there intestines are built differently than ours in order to adapt.
Explanation:
Hope it helps! =D