It is believed that RNA evolved earlier than DNA, but it is still not clear. Therefore, this topic interests scientists.
What is nucleic acid?Nucleic acid is a macromolecule that is a polymer of nucleotide. It is made up of pentose sugar, phosphate group, and nitrogenous bases (purines and pyrimidines) which include adenine, guanine, thymine, uracil, and cytosine.
It is of two types, DNA (deoxyribose nucleic acid) and RNA (ribose nucleic acid). They play a very important role in heredity and protein synthesis in all living organisms. It is found in the cell.
DNA is a double helix, while RNA is a single helical structure. DNA is converted into RNA through the process of transcription and RNA is converted into DNA by reverse transcription. It is believed that RNA evolved earlier than DNA, but it is still not clear. Therefore, this topic interests scientists.
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How can chemical differentiation be used to explain the distribution of elements on Earth OR within our solar system?
Answer:
Substances in nature rarely exist as single element but combination of more than one elements.
This combination of element is referred to as compounds.
These compounds can breakdown from temperature change or change in pressure and so on ,these atmospheric change exist in nature and with long climatic change over a period and could lead to elements recombining and could be transported to other areas from weathering.
is the trans pecos ecoregion of texas considered a desert ? true or false
Answer:
false
Explanation:
Body systems in the human body work together to support the essential life functions of the body. The urinary system interacts with the cardiovascular system in several significant ways. Which of these is NOT an accurate interaction between the two body systems?
A) The kidneys secrete an enzyme called rennin that helps control blood pressure.
Eliminate
B) The kidneys filter metabolic waste products and toxins from blood for excretion from the body in urine.
C) The kidneys excrete a great amount of sodium and water helping control sodium concentration and blood pressure.
D) The kidneys secrete erythropoietin, a hormone which stimulates the production of white blood cells in the body.
Answer:
a
Explanation:
the kidney secretes an enzyme called rennin that helps to control blood pressure is not true the kidney does not secret rennin
2. What are the two types of ecological succession?
Answer:
There are two main types of succession, primary and secondary. Primary succession is the series of community changes which occur on an entirely new habitat which has never been colonized before. For example, a newly quarried rock face or sand dunes.
Explanation:
Answer:
Ecological succession is a process of change in ecosystems that takes place over time, and that we can observe both in time and in space. ... There are two types, the primary sequence and the secondary sequence.
"I hope it helps you it was a pleasure to help you".
Explanation:
Name the MAIN abiotic and biotic factors which affect prairie ecosystems
and describe their effects on those systems.
Answer:
Aboitic means non living and biotic means living.
Explanation:
For example a bench is aboitic because it is not living but once was. Something biotic would be grass because it is living presently.
what are the advantages of housing a telescope inside mountain of observatories?
the following facts are true about resource A
. it grows in nature and takes about five years to reach a mature size.
.it can be replanted after it is cut down
resource A is most likely an.
A. inexhaustible resource
B. nonrenewable resource
C. recycled material
D. renewable resource
Answer:
Option D, renewable resource
Explanation:
A renewable resource is the resource which can be replenished after every use. Or in general the time taken by it to replenish must be small. For instance, fossil fuels too are renewable but the time taken by them to renew is too high and hence they are also considered as non-renewable.
Also renewable resources can be used again and again.
Hence, option D is correct
Biogeochemical cycles _______.
Answer:a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth.
Explanation:
Approximately how many elements are there that combine chemically in a great number of ways to produce compounds?A.25B.50C.75D.100 plssss help meee
Answer:
D.100
Explanation:
There are A lot so 100 is the most.
Answer:
The structures of chemical compounds are influenced by complex factors, such as bond angles and bond length.All the matter in the universe is composed of the atoms of more than 100 different chemical elements, which are found both in pure form and combined in chemical compounds.
A formula shows the types of elements present and the proportion of each element ... microbe or a multicellular animal or plant, can be compared with a chemical factory. ... In many living organisms, the elements carbon, hydrogen, and oxygen are ... The various elements can combine to form a great number of compounds.
Explanation:
Atoms are the smallest particles of matter that can enter into chemical reactions. ... The mass number of the most abundant isotope of any element is determined by ... Compounds with a significant percent of polar covalent bonds are called polar ... Fatty acids are organic acids that have very long hydrocarbon chains making. HOPE THIS HELPS!!
this is the condition in which one living organism serves as a food source for another
Answer:
Producer
Explanation:
A producer provides food for other organisms and a consumer is an organism that eats the producer.
Which technology collects Dara for weather, climate, and environmental monitoring from space?
Answer:
A partnership of NOAA, NASA and the U.S, Air Force, DSCOVR collects data on Earth's atmosphere and maintains real-time solar wind monitoring capabilities. With this information, NOAA generates space weather forecasts and alerts for events such as geomagnetic storms caused by changes in solar wind.
Explanation:
~+*PLEASE ANSWER ASAP! BRAINLIEST AND 20 PTS!*+~
How does reproductive isolation differ in sympatric modes and allopatric modes of speciation?
Answer:
In allopatric speciation the groups are reproductively isolated and diverge due to a geographic barrier. In sympatric speciation, reproductive isolation and divergence occur without geographic barriers, for example polyploidy.
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Explanation:
Leslie argues that an organism called a Euglena is a plant because it is eukaryotic, has a nucleus, makes its own food, and is unicellular.
Where is Leslie’s error?
Plants do not make their own food.
Plants are multicellular.
Plants are prokaryotic.
Plants do not have a nucleus.
Answer:
B. Plants are multicellular.
Explanation:
Which of the following year graphs represent hours of daylight and solar energy at 45° S?
Answer:
The answer is D
Explanation:
In a certain state, electricity is generated by using the earths heat. Wells drilled and natural steam is taken out through pipes. This natural steam powers the generator and the electricity generated. What type of energy is being used and what type of power plants are set up for harnessing this renewable energy?
Answer:
Geothermal
Explanation:
The geothermal energy is generated by the Earth's core that is a region with extremely high temperatures. The heat makes the geothermal power plants to work and thus generate energy from it.
Help, a very strong form of cocaine is ______.
Answer:
baking soda
Explanation:
None I hope this helps you
The researcher had hypothesized that the addition of the vitamin that is similar in structure to NADH would increase the activity of the mutated NADH dehydrogenase enzyme in individuals with the disorder. Explain how the vitamin most likely increased the activity of the enzyme
Answer:
It is expected that the mutation helps the enzyme to bind to the vitamin, and this interaction may be necessary to maintain the activated state of the enzyme.
Explanation:
The NADH dehydrogenase converts nicotinamide adenine dinucleotide (NAD) from its reduced form (NADH) to the oxidized NAD+, thereby this enzyme is required for generating ATP by electron transport.
Describe how gravitropism in roots is different from gravitropism in shoots.
Answer:
Gravitropism is the movement or growth of a plant in response to gravity. ... Plant shoots demonstrate negative gravitropism since they grow in the opposite direction of gravity. Gravity is sensed by specialized cells called statocytes, which have statoliths that sink inside the cell.
Explanation:
the diagram shows three steps in the clotting process.
Which lists the clotting process in the proper order?
o А, С, В
ОВ, А, С
o С, А, В
е В, С, А
Answer:
В, С, А
Explanation:
The process of clotting is known as the hemostasis which takes place in three steps: the vascular spasm, the formation of a plug of platelets and the coagulation.
In the given question, step B shows the process of vascular spasm in which the vascular blood vessels becomes constricted due to injury. After this, the platelets present in the blood starts accumulating at the site of injury. These platelets stick together and form a plug-like structure at the site of injury.
Later, step A takes place that is fibrin protein present in the blood starts forming a mesh-like structure which does not allow the bleeding and this process is known as coagulation.
Thus, the selected option is the correct answer.
(a) If a particular gene is located on the Z chromosome of this lizard species, describe why a lizard with a ZW genotype has a greater probability of expressing the recessive phenotype for the trait than a lizard with the ZZ genotype does.
Answer:
If there is no dominant allele for a trait present on a homologous chromosome to mask the recessive allele, the recessive phenotype will be expressed. In this case, the gene is located on the Z chromosome. In an individual with a ZW genotype (female) there is no homologous Z partner, meaning whatever allele is present on the solitary Z chromosome will be expressed.
Explanation:
What two components are often found as part of a enzyme?
Answer:
2 main components of the reaction are the Enzyme and its substrate.
What is function of the cell membrane ?
Which one is the correct answer?
Answer:
pretty sure it is non contact forces
Explanation:
no touchy-touchy involved so yeah
Non contact forces is the answer of your question.
A non-contact force is a force which acts on an object without coming physically in contact with it. A non-contact force is a force applied on an object by another body without being in direct contact with the object.
Hope it will be helpful to you. ..
what do you think would happen if the AV node could no longer do it’s job? Explain how this would affect the contraction of the heart and movement of blood
Answer:who else is high rn
Explanation:
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Why did the deer start to avoid certain areas of the park, like valleys and gorges?
a They could be trapped easily in those areas
b Their food source ran out of those areas
c Humans built shopping malls and tourist attractions in those areas
dThey did not avoid those areas, they flocked to them
Answer: A I hope this helps
Explanation:
How has shark skin been used to inspired materials that slide faster through the water?
Answer:
Shark skin has been used by many cultures as sandpaper. It's kept shipmates safe in slippery-when-wet conditions. Swimsuits modeled on shark skin are said by Speedo to reduce drag by up to 4 percent. Now, research by two separate groups could lead to synthetic shark skin that would make ships and submarines faster and less expensive to operate.
Plz help!! Which substance is most likely represented by y?
Answer:
glucose
Explanation:
x is carbon dioxide and y is glucose because it's the photosynthesis equation
Answer:
Glucose
Explanation:
The process that occurs in the chloroplast is called photosynthesis. Plants use this process to make food for themselves. This process is:
Carbon dioxide+ water + light energy —> oxygen and glucose
In the photo, we are looking for y. y is next to oxygen, so we can assume that y and oxygen are the products of photosynthesis.
The other product of photosynthesis is glucose.
Therefore, glucose is the correct answer.
Which physical structures are present in amphibians, but not in reptiles, when they first hatch?
Answer:
As compared to reptiles, amphibians have smooth skin. The skin of most amphibians is not water-proof unlike reptiles. Although most of the amphibians have lungs, they usually breathe through their skin and lining of their mouth, whereas most reptiles do not.
Explanation:
If your looking for an answer on edge, the correct answer is C) gills and fins
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What’s the meaning of existence
Answer: Existence definition: The existence of something is the fact that it is present in the world as a real thing. Or The noun existence can be used many different ways, but it always has to do with being alive or with simply "being”.
Explanation:
Existence is the state of being alive or being real. For example, you and your best friend disagree about the existence of Bigfoot if you think it's real and your friend doesn't. Existence is the state of being alive or being real. For example, you and your best friend disagree about the existence of Bigfoot if you think it's real and your friend doesn't.
What is the branch of earth science that puts past events on earth in order by time?
A) geology
B) geography
C) ecology
D) chronology
Answer:
(c) ecology
Explanation:
