Answer:
DNA is double-stranded, so there must be equal numbers of C and G because they pair to each other on the complementary strands.
RNA is only single-stranded, so there can be any number of C and G. They don't pair to each other, because there's only one strand.
Equal numbers of guanine and cytosine would be expected in a molecule of DNA, but not RNA because:
DNA is double stranded with the first strand being a complimentary copy of the other. The two strands are also associated with each other by hydrogen bond.RNA is single strand.In the double strand DNA, Adenine always pair with Thymine while Guanine always pair with Cytosine. Hence the number of Adenine must be equal to that of Thymine while that of Guanine must be equal to Cytosine.
The single strandness of RNA means that it can contain an arbitrary amount of any of the bases without following a particular rule.
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PLEASE HELP!!! Why is meiosis necessary for sexual reproduction?
Can someone help me with this question please?
Answer:
How you should explain so it wont look plagerized:
Explanation:
I believe that the most important part of a plant is the roots and the stem because the roots carry the nutrients and the stems process it so the plant stays healthy and alive!
Hope this helps.
Have a good day!
(Brainliest would be appreciated)
Some adaptations, on the other hand, become useless. These adaptations are vestigial: remaining but functionless. Whales and dolphins have vestigial leg bones, the remains of an adaptation (legs) that their ancestors used to walk. Why did the author include this selection?
Answer:
This is because vestigial parts are usually homologous to most of the structures that are functional in other species of organisms. E.g.. the Vestigial legs which are non functional in whale and Dolphins, are useful to other organisms. Hence, if these organisms possessed these structures, they should share certain characteristics with each other.Therefore these organisms can be said to evolved from one another.Thus their vestigial organism should be included by the author as evidence of evolution.
Explanation:
A carefully placed paper clip can float on top of water without sinking Which property of water allows the paper clip to float
Answer:
High surface tension or just Surface tension
What is heart attack? What are its causes?
Answer:
MEANING
A heart attack is a medical emergency. A heart attack usually occurs when a blood clot blocks blood flow to the heart. Without blood, tissue loses oxygen and dies.
A heart attack occurs when one or more of your coronary arteries become blocked. Over time, a coronary artery can narrow from the buildup of various substances, including cholesterol (atherosclerosis). This condition, known as coronary artery disease, causes most heart attacks.
CAUSES:
Chest Pain, Pressure, Fullness, or Discomfort.
Discomfort in other areas of your body.
Difficulty breathing and dizziness.
Nausea and cold sweats.
A new development involves a network of plastic tubes being printed within an organ. After the whole organ is printed, these plastic tubes are dissolved, leaving a network of empty tunnels.
Why does the organ need to have the empty tunnels within it?
Answer:
These are needed to mimic the blood vessels which these organs will use for the supply or drainage of fluids e.g blood.
In addition the empty tunnels serve as the routes for nutrients and oxygen supply for the organ.
In summary the tunnels provided a vascular structure to support the organ
Explanation:
Japanese honeysuckle is found in the United States. It outcompetes other plants by blooming early and dying off late. This is an example of
Answer:
nonnative species
Explanation:
just learned about it on Edge
Energy released by fusion in the Sun is initially in the form of
visible light
gamma rays
ultraviolet light
infrared radiation
Answer:
gamma rays
Explanation:
Energy released by fusion in the sun is initially in the form of gamma rays.
[A gamma ray designates the high frequency electromagnetic radiation of a photon whose wavelength is less than 1 picometer which corresponds to frequencies greater than 300 exahertz.]
Answer:
gamma rays
Explanation:
What are biogeochemical cycles?
Answer:
In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical substance moves through biotic and abiotic compartments of Earth.
Explanation:
Unknown source.
A stream of waters holds thriving bacteria. If drought conditions caused the stream to dry up, how would the bacteria most likely respond to survive?
Is domestication the process where animals are trained to do tricks useful for human needs?
Answer:
Not exactly, Domestication is the process of adapting wild plants and animals for human use.
Explanation:
domestication is not the process where animals are trained to do tricks useful for human needs instead it is the process of adapting wild plants and animals for human use.
How are natural communities structured?
Which of the following statements is correct?
DNA reads and translates the RNA code.
DNA synthesizes protein.
RNA reads and translates the DNA code.
RNA contains the genetic code.
Answer:
3rd
Explanation:
O fitoplâncton é a base das cadeias alimentares marinhas ,estando presente apenas na zona fótica . Vc concorda com a afirmação justifique a sua resposta
Answer:
El fitoplancton se basa en la cadena alimentaria marina. Sin embargo, el fitoplancton significa mucho más porque forman la base y la base de la cadena alimentaria marina. Se les conoce como fitoplancton porque dependen de la luz para el crecimiento y el sustento de la vida fuera del hábitat marino. Se sabe que son responsables del 50% de la fotosíntesis de la Tierra, por lo tanto, son cruciales para la supervivencia humana. Las algas son un grupo importante de fitoplancton. Otros ejemplos incluyen cianobacterias y diatomeas.
Explanation:
A red flower (RR) and a red flower (Rr) have the same:
A. genotype
B. haplotype
C. Phenotype
Answer:
the answer is a. genotype
HELPPP ASAPPP!!!! 20 POINTSS!!!
Why do cells use fat and starch for long-term energy storage instead of ATP molecules?
A.) ATP is used for long-term storage, while fat and starch are used for immediate energy.
B.) ATP is used for short-term energy and to build molecules of starch and fat.
C.) Fat and starch are unstable and can be stored short-term, while ATP molecules are stable and stored long-term.
D.) Fat and starch are stable if used as energy immediately, while ATP is used as long-term storage
Answer:Cells use fat and starch for long term energy storage instead of ATP molecules because it is hard to breakdown fat in a very short time while ATP can be broken down in a very short time. ATP is mainly used while doing short bursts of exercises. Fats have a very strong bond of molecular chains and this makes it hard to breakdown quickly.
Explanation:
Answer:
ATP is used for short-term energy and to build molecules of starch and fat.
Which of the steps of cellular respiration occur IN the mitochondria? Choose ALL that apply. A) Krebs Cycle B) Glycolysis C) Electron Transport Chain
Answer:
The answer is option A
Kreb's cycle take place in mitochondria
Whereas electron transport chain in the inner membrane
And glycolysis occurs in cytoplasm
Explanation:
The steps of cellular respiration that occur in the mitochondria are:
A. Krebs Cycle
C. Electron Transport Chain
Cellular respiration can be defined as series of metabolic reactions typically occurring in all living cells, so as to produce energy in the form of adenosine triphosphate (ATP).
Basically, there are three (3) main steps involved in cellular respiration and these include:
GlycolysisKrebs cycleElectron transport chainKrebs cycle is an aerobic reaction that occur in the mitochondria of both prokaryotic and eukaryotic cells and in the presence of oxygen, to produce carbon dioxide (), two (2) adenosine triphosphate (ATP), six (6) NADH, and two (2) FADH.
Similarly, electron transport chain is also an aerobic reaction that occur in the mitochondria.
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Complete the sentence choosing from the following words:
catalyse, denatured, digest, soluble, insoluble, energise, excreted, ingested
Digestion is the process of breaking down large food molecules into smaller molecules that are ________ .
Enzymes help to break down food because they ________
chemical reactions.
If the temperature of an enzyme gets too high, the enzyme is ________ .
Answer:
1. Soluble
2. Catalyze
3. Denatured
Explanation:
1. We eat in order to obtain energy. However, this food is often in a complex state and needs to be broken down into its simplest form. The process of digestion ensures this occurs in living organisms. Digestion is the process of breaking down large food molecules into a much more simpler molecule that can be passed on to the blood stream for absorption by cells. These simpler molecules must be SOLUBLE in water for them to be transported into each cell via the bloodstream.
2. The breaking down of food molecules described above is facilitated by certain proteinous chemical agents called ENZYMES. Enzymes are biological catalysts i.e. they help speeden up the rate of biochemical reactions in living systems. In the case of digestion, specific enzymes chemically acts on specific food molecules. For example, amylase acts on carbohydrates, protease acts on proteins etc.
3. As stated above that enzymes are proteinous, it means they possess the characteristics of proteins. One of those characteristics is the ability to get denatured by increase in temperature. High temperature causes an enzyme to lose its specific 3D shape, affecting its functionality. Hence, the enzyme is said to be DENATURED.
Describe what occurs between water molecules in hydrogen bonding. Draw a diagram, labeling the hydrogen bond.
Answer:
The molecules are attracted to their less negative side.
Explanation:
The Oxygen in the water molecule will share or the hydrogens lone atom leaving the hydrogen with a more positive charge like in the picture I've added. This happens with all water molecules leaving the oxygen with more electrons and ultimately the more negative side. And positive and negative forces attract, so the now "positive" hydrogens will bond with the now "negative" oxygens. They form bonds using polarity, and use a very strong dipole dipole effect.
Some salmon have been genetically modified to grow bigger and mature faster than wild salmon. They are kept in fish facilities. Which statement regarding genetically modified salmon is correct
Salmon that have been genetically engineered have generated debate because of worries about the potential environmental and health effects if they were to escape and interact with native populations.
How is the genetic makeup of salmon altered?Canadian researchers patented genetically altered (GM) salmon after introducing a promoter—the genetic equivalent of a "on-off" switch—from an ocean pout and a gene that controls growth hormones in Pacific Chinook salmon into the genetic makeup of an Atlantic salmon.
Do wild salmon contain genetically engineered fish?All Atlantic salmon, including genetically modified (GM) salmon, is farmed salmon. Because Atlantic salmon is an endangered species, there is no natural fishery.
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Leeches often attached to the tongue of a crocodile and consume the crocodiles blood as food the Egyptian Plover is a bird that flies into the mouth of the crocodile and eats the leeches the crocodile do not harm the plovers the relationship between a crocodile and the leech is an example of _________?
Answer: mutualism
Explanation:
According to the information given in the question, the relationship between a crocodile and a leech is an example of Commensalism.
What do you mean by Species interaction?Species interaction may be defined as a type of biological phenomenon through which the population of one species interacts with populations of other species that live in the same locality. There are various types of species interaction that can commonly be found in the nature and ecosystem.
According to the context of this question, the individuals of leeches attached to the tongue of a crocodile consume the crocodile's blood as food. In this way, the population of leeches gets benefits from the crocodile by taking their blood as a source of food and energy.
The Egyptian Plover is a bird that flies into the mouth of the crocodile and eats the leeches the crocodile does not harm the plovers. In this way, crocodiles do not get any harm or benefit from the population of leeches. So, this type of + and 0 interaction is known as Commensalism.
Therefore, the relationship between a crocodile and a leech is an example of Commensalism.
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Identity which questions can be answered through science and which cannot.
Is it right or wrong to use genetic
engineering to produce new food
products?
If a new gene is added to the genome
of a tomato species, will that species
be more resistant to insects?
Are Michelangelo's paintings more
impressive than Rembrandt's?
Should humans use biotechnology
to bring extinct organisms from the
fossil record back to life?
What are the most common social
settings that tend to produce
accomplished artists?
Do the types of organisms found in
the fossil record appear in consistent
sequences in different parts of
the world?
can be answered
through science
cannot be answered
through science
rights reserved.
Answer: Those questions that can be answered using experimentation procedures and observations can be answered through science and those that cannot be answered by experimentation cannot be answered through science.
Explanation:
1. It cannot be answered through science because right or wrong to use genetic engineering may be dependent on other parameters like ethical basis.
2. This can be answered through science. This can be answered while placing the resistant species to insects and observing the effect.
3. This cannot be answered through science. This can be answered on qualitative comparison which does not require scientific experimentation.
4. This can be answered scientifically by tracing the primitive life forms and using the residues to develop a new organism with the help of biotechnology.
5. This cannot be answered through science. This is because social factors must be looked upon to understand how they are responsible for producing accomplished artists.
6. This can be answered through science by analyzing the fossil record with respect to the strata were they were found beneath the earth.
how life gets and shares energy?
Answer: Photosynthesis and the food chain.
4. Does natural selection act on an organism's
An idea that is supported by some evidence, but is not yet the basis for a field
of study is called a
Answer: trite a hypothesis
Explanation:
The basic idea of a hypothesis is that there is no pre-determined outcome. For a hypothesis to be termed a scientific hypothesis, it has to be something that can be supported or refuted through carefully crafted experimentation or observation.
Why do we have ACE2 proteins?
Answer: It is the key to blocking infections
Explanation: I hope this is right :)
Which describe the effects of climate on the rate of weathering? Select three options.
Answer:
Warm climates favor chemical weathering.
Cold climates favor mechanical weathering.
Chemical reactions occur faster at higher temperatures.
Which statement best describes the events that take place within the
mitochondrial membrane?
O A. Electrons gain energy as they move.
OB. The electron transport chain produces ATP.
O C. The Krebs cycle breaks down glucose.
O D. Kinetic energy is produced by pyruvate.
Answer:
B
Explanation:
took the quiz
Have a good one
Electrons flowing along a protein pathway help produce ATP, according to the best description of what happens within the inner mitochondrial membrane. The correct option is B.
What is an electron transport chain?The electron transport chain is a collection of four protein complexes resulting in an electrochemical gradient that leads to the formation of ATP in a process known as oxidative phosphorylation.
It occurs in mitochondrial membranes during both cellular respiration and photosynthesis.
Thus, the correct option is B.
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what are the raw mineral needed for photosynthesis
Answer:
Water and carbon dioxide
Explanation:
Water and carbon dioxide in the presence of light, enter the cells of the leaf, where, in the presence of chlorophyll, photosynthesis takes place and sugar and oxygen are produced.
How much do you think your pulse will increase during the two activities?
Answer:
what activities are you talking about
Explanation: