The Sun is not burning through combustion with oxygen but operates through nuclear fusion, which allows it to emit energy for billions of years, unlike combustion which would only sustain it for a very short period.
The Sun does not burn in the way that we think of materials burning on Earth, such as wood or coal. In a combustion reaction, a substance reacts with oxygen to release energy in the form of heat and light. However, the Sun operates through a different process known as nuclear fusion, where hydrogen nuclei combine to form helium, releasing immense amounts of energy in the process.
Assuming the Sun was made entirely of oxygen and combustion was possible, when an oxygen atom combusts, it would release an electron-volt of energy. But given the chemical bond energy typical of combustion reactions (about 1 eV), the Sun would have a very short lifespan, far shorter than what we observe. Even if the Sun were made of the best anthracite coal and oxygen, it could only sustain its current level of heat output for less than 1500 years given the huge amount of energy it emits.
Therefore, it is not combustion that powers the Sun, but rather the process of nuclear fusion, which is capable of producing the Sun's energy for billions of years.
Check all the characteristics below that describe ATP.
Check all that apply.
stands for "adenosine triphosphate" is an energy molecule
contains two phosphates
contains energy in phosphate bonds
Answer: Option A, B and D are correct.
Explanation:
ATP or adenosine triphosphate can be defined as the high energy molecules that is used by all the living organism.
This molecule is released by the combustion of carbohydrates in the presence of oxygen.
The energy is stored in the phosphate bonds and adenosine triphosphate contains 3 phosphate molecules.
Answer:
A- Stands for “adenosine triphosphate”
B- Is an energy molecule
D- Contains energy in phosphate bonds
- I'm doing the assignment mate, no cap
Diastolic describes a measurement of which of the following
Answer:
diastolic is the pressure when the heart relaxes and lets the chambers fill up with blood
Explanation:
Answer:
diastolic is the pressure when the heart relaxes and lets the chambers fill up with blood
Explanation:
The purpose of a vortex instrument is to
Answer:
The vortex created is a similar form of kinetic force to stirring, but minus a component that protrudes into the sample container. A vortex is the preferred choice for a host of microbiology and life science applications with sensitive samples or high throughput operations. A typical stirrer faces several limitations – for instance, it can only mix a single sample container at a time.
Answer:
Vortex instrument is used to suspend cells that is, it is a simple device used to mix small vials of liquid in laboratories.
A population of chimpanzees was separated when the forest that they lived in had a section cut down and a town was built. After a long period of time, the chimpanzees came back into contact but were incapable of breeding. Which of the following best describes the process that occurred?
Answer:
speciation
Explanation:
It is because when the chimpanzees were moved to the new habitat they adopted the characteristics of that are so after a long period they become different from the species in that forest so they are unable to breed with them.
A cell with a 3.5% solute concentration is __ to a solution with 1.5% solute concentration.
A. hyoptonic
B. isotonic
C. hypertonic
D. saturated
A cell with a 3.5% solute concentration is hypertonic to a solution with a 1.5% solute concentration because it has a higher solute concentration.
Explanation:A cell with a 3.5% solute concentration is hypertonic to a solution with a 1.5% solute concentration. This term is used in the field of biology to describe the solute concentration of a solution relative to another solution. By definition, a hypertonic solution has a higher solute concentration compared to another solution. In this case, the 3.5% solute concentration inside the cell is higher than the 1.5% solute concentration of the outside solution, making the cell hypertonic to the solution.
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scientists discovered that new molten materials from inside the eath create new
Answer:
Crust
Explanation:
According to the recently given theory, The theory of Seafloor Spreading the magma or lower most part of the earth's surface which sometimes bursts as (molten lava) plays substantial role in the formation of new crust. This is because when magma or molten lava from the bottom most part of the earth reaches the surface of earth, it cools down and pushes the already existing surface of the earth like rocks from both directions. This pushing of rocks cause the formation of new crust by the molten materials when it cools down.
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Answer:
crust and younger
Explanation:
Plants absorb nitrogen from: the atmosphere the soil water
Answer:
Plants absorb nitrogen from: the soil ( second choice)
ANSWER:
Plants absorb nitrogen from the soil.
EXPLANATION:
Nitrogen is absorbed by the roots of the plants in the form of amino acids, nitrate or nitrite ions. The nitrogen absorbed from the soil by roots is then transported to the various parts of the plants. Plants do not get nitrogen they need directly from the air. This is because the organic nitrogen that is available in the atmosphere is not usable for plants. Plants need non-organic nitrogen which is obtained by changing organic nitrogen into non-organic forms by the bacteria in the soil.How are breathing and cellular respiration similar?
A: Both require water in order to take place.
B: Both use oxygen and produce carbon dioxide.
C: Both involve breaking down glucose to produce ATP.
D: Both involve using ATP to fuel other chemical reactions.
Answer:
(B) Both use oxygen and produce carbon dioxide.
Explanation:
breathing as we know we takeon O2 and give out CO2.
In cellular respiration the cells use the O2
we breathe to produce ATP molecules and then give out CO2
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The decaying plat matter found in bogs results in the production of
Answer:
Peat
Explanation:
The decaying plant matter that is found in bogs results in the production of peat. It is not fully decayed by either acidic or inorganic environmental conditions, rather present or composed of wet-land plant life. it is rich in carbon dioxide. It is also an important source of fuel.
Answer: carbonic acid
Explanation:
Brianna’s doctors advise her to eat no more than 30 grams of carbohydrates per day for her snacks. Because dietary fiber doesn’t negatively affect blood sugar levels, she doesn’t need to count it toward her carbohydrate total. If Brianna eats two servings of each of these foods, will she fall under her doctor’s recommended limit for her snack? Explain your reasoning.
Answer:
No, her dietary consumption won’t fall under the recommended limit. Subtracting fiber, there are 11 grams of carbohydrates per serving in the first snack and 5 grams per serving for the second snack. If she eats two servings of each snack, she’ll consume 32 grams of carbohydrates.
Explanation:
The details given are not enough to determine whether Brianna will fall within the advised carbohydrate limit. This requires knowledge of the carbohydrate content of her snack servings. However, it is essential to note that while carbohydrates are the body's primary energy source, they need to be consumed in moderation.
Explanation:The details provided in the question are not sufficient to determine whether Brianna will fall under her doctor's recommended limit for her snack. To arrive at the correct conclusion, you need to know the amount of carbohydrates, not including fiber, in every serving of the snacks Brianna intends to consume. Remember, carbohydrates are essential as they provide energy to the body, particularly through glucose, a simple sugar. However, excess consumption may lead to health issues. Carbohydrates also contain fiber, an insoluble part which Brianna doesn't need to count toward her carbohydrate total. Fiber is beneficial for promoting regular bowel movement, regulating the rate of blood glucose consumption, and for removing excess cholesterol from the body.
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Explain why water is critically important to most facets of human life.
(good answer gets brainlest give description)
Water is critically important to most facets of human life because it is essential for various cellular processes in our body. Approximately 60-70% of the human body is made up of water. Without water, life would not be able to exist as we know it.
Explanation:Water is critically important to most facets of human life because it is essential for various cellular processes in our body. Approximately 60-70% of the human body is made up of water, including the brain, blood, muscles, and even bones. Water serves as a transportation vehicle, medium for chemical reactions, lubricant/shock absorber, and temperature regulator in our body. Without water, life would not be able to exist as we know it.
which fossil fuel is in greatest supply worldwide
Answer:
i think its gas for cars and stuff
Which of the following correctly compares steroid and nonsteroid hormones
Answer:
do post complete question
A steroid hormone is a steroid that acts as a hormone. Steroid hormones can be grouped into two classes: corticosteroids and sex steroids. Within those two classes are five types according to the receptors to which they bind: glucocorticoids, mineralocorticoids, androgens, estrogens, and progestogens.
Nonsteroid hormones (water soluble) do not enter the cell but bind to plasma membrane receptors, generating a chemical signal (second messenger) inside the target cell. Five different second messenger chemicals, including cyclic AMP have been identified. ... The action of nonsteroid hormones.
(2.08x10^3) x (3.11x10^2)
Answer:
646,880
Explanation:
Start with your exponents.
[tex](2.08*10^3)*(3.11*10^2)\\(2.08*1000)*(3.11*100)[/tex]
Next, multiply within your parentheses.
[tex](2.08*1000)*(3.11*100)\\2080*311[/tex]
Finally, multiply your two terms against each other.
[tex]2080*311\\646880[/tex]
18. In replication of DNA, the helix is opened and what is unzipped?
A. Nitrogen bond
C. Oxygen bond
B. Hydrogen bond D. Phosphate bond
Answer:
B) Hydrogen Bond
Explanation:
Those are the bonds that the restrictive enzymes unzip and the bonds that hold the complementary bases.
Final answer:
In DNA replication, helicases unzip the DNA molecule by breaking the hydrogen bonds between the nitrogenous base pairs.
Explanation:
DNA replication is a process that involves the unzipping of the DNA molecule. During this process, enzymes known as helicases break the hydrogen bonds between nitrogenous base pairs. This action separates the two strands of the DNA double helix and allows each strand to serve as a template for the creation of a new complementary strand. Consequently, the letter corresponding to the correct answer is B. Hydrogen bonds between complementary bases break during the replication of DNA.
Which describes the F2 generation in Mendel's experiments?
O
A. Three times as many tall plants as short plants
O
B. The same number of tall plants and short plants
O
C. Half as many tall plants as short plants
O
D. Twice as many short plants as tall plants
Answer:
(A) is correct option.
The statement that describes the F2 generation in Mendel's experiments is three times as many tall plants as short plants.
MENDEL'S EXPERIMENT:
Gregor Mendel who is referred to as the father of genetics crossed two parents that are pure breeding for specific traits. The F1 generation consists of offsprings that are all dominant. The F1 generation was self-crossed to produce F2 offsprings. The offsprings of the F2 generation has 3 dominant (tall) and 1 recessive (short) trait i.e. 3 tall : 1 short. Therefore, the statement that describes the F2 generation in Mendel's experiments is three times as many tall plants as short plants.Learn more at: https://brainly.com/question/3056662?referrer=searchResults
Experiments in which all variables are identical except for one are called _____ experiments
Answer:
Controlled experiments
Explanation:
Controlled experiments are those experiments where all variables are identical but only one is different. The purpose of such experiments is to test a hypothesis by analyzing the change it brings to results due to change of only one variable when everything else is constant. SO we can say that in such experiments, it is the only changing variable which is influencing the results of an experiment because everything else is just same.
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Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. A few months later, she accomplishes this same task relatively easily. The change in abilities is most likely due to _____.
Answer:
Developmental progression of functional skills
Explanation:
With the passage of time, a kid not only grows physically and mentally but also in his/ her cognitive abilities to perceive and understand the happening around him. He develops a a relationship sense for peers, family members and related adults. Similarly, he also develops the ability to learn the things which are quite basic for us like taking off clothing items.
These things come under the umbrella of developmental progression for functional skills. studies have shown that a kid learns to take off clothing items before he learns to put them on. Same is the case with putting on socks, a kid can take off socks by the age of 12 months which is earlier than he learns to put them off (age of 18 months) with the assistance of any elder and independently by the age of almost 4 years.
This developmental progression helps a kid to modify his behavior and to be more independent.
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The change in Jasmine's abilities, progressing from struggling with tasks like putting on socks at 33 months to accomplishing them relatively easily a few months later, is most likely due to:
A. fine motor skills.
As Jasmine grows and her fine motor skills develop, she becomes more adept at tasks like putting on socks, demonstrating improved coordination and control over her movements. This developmental progression allows her to accomplish previously challenging tasks with greater ease and proficiency.
The change in Jasmine's abilities, progressing from struggling with tasks like putting on socks at 33 months to accomplishing them relatively easily a few months later, is most likely due to her developing fine motor skills. At 33 months, children are still refining their coordination and dexterity, making tasks like putting on socks challenging. However, with continued practice and maturation, Jasmine's fine motor skills improve, allowing her to perform tasks requiring precise hand movements more effectively. This developmental progression is typical as children grow, and their neurological pathways strengthen. The newfound ability to put on socks relatively easily demonstrates Jasmine's enhanced fine motor control and highlights the importance of developmental milestones in acquiring self-care abilities.
The correct question is:
Jasmine, at 33 months of age, is able to engage in some self-care behaviors but still has trouble with tasks such as putting on socks. A few months later, she accomplishes this same task relatively easily. The change in abilities is most likely due to _____.
A. fine motor skils.
B. a non-supportive environment.
C. a lack of motivation.
D. poor language abillies.
How do meiosis I and mitosis similar?
Answer: they are both about cell division, (both involved in making new cells)
Explanation:
Which unit of geologic time is the oldest?
Answer:
Precambrian Era
Explanation:
Two species of guppies show different mating behaviors is it prezygotic or postzygotic isolation
Answer:
Prezygotic
Explanation:
Prezygotic means that the two species cannot reproduce a viable offspring before the two zygotes meet. Since behaivoral isolation is listed under being prezygotic because behaivors prevent their intercourse before the zygotes meet, then it is prezygotic.
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How do you calculate a scale for your drawing when using a microscope?
A. Size of drawing / size of organism
B. Field of view / size of drawing
C. Size of organism x size of drawing
D. Magnification / size of drawing
Answer:
D. Magnification / size of drawing
Explanation:
You would calculate a scale for your drawing when using a microscope by magnification / size of drawing.
which consumers live in the open ocean
Answer: swordfish, dolphins, and sharks
Explanation: Consumers must eat other consumers or producers to survive in the open ocean. Out of the provided answer choices, swordfish, dolphins, and sharks all prey on producers or other consumers to eat.
In the oceanic zone, primary consumers include plankton, with larger predators like whales and dolphins feeding on them. Nutrients are scarce, and the food web complexity decreases with depth. Overfishing has significantly impacted populations of large fish and marine mammals.
Explanation:The open ocean, also known as the oceanic zone, is a marine biome characterized by thermal stratification where warm and cold waters mix due to ocean currents. This zone hosts a variety of consumers, including plankton, which form the base of the food chain, and larger animals such as whales and dolphins that feed on them. Due to the scarcity of nutrients, the oceanic zone is less productive compared to coastal regions. Nonetheless, it supports a diverse array of life forms adapted to this environment.
Photosynthetic organisms are predominantly found in the upper layers where sunlight penetrates, forming the basis for the food chain. When these organisms die, they fall to the ocean floor, providing nutrients for bottom-dwelling creatures in the aphotic zone, such as sea cucumbers. Notable is the absence of a mechanism to recycle nutrients back to the surface in the open ocean, except in areas of upwelling.
Over-exploitation and certain fishing practices have led to dramatic declines in the populations of large fish and marine mammals, which are key components in the ocean's complex food webs.
What are the end products of the light-dependent reactions that need the presence of light to occur?
The end products of the light-dependent reactions, which require light to occur, are ATP and NADPH. These molecules are then used to power the light-independent reactions (Calvin Cycle) where glucose is synthesized.
The light-dependent reactions of photosynthesis are the initial phase where light energy is converted into chemical energy. Specifically, these reactions take place in the thylakoid membranes located within the chloroplasts. The primary function of the light-dependent reactions is to produce energy-rich molecules, which are ATP (adenosine triphosphate) and NADPH (nicotinamide adenine dinucleotide phosphate). These molecules are essential to power the subsequent process, known as the light-independent reactions or the Calvin Cycle.
The overall summary of the light-dependent reactions can be represented as:
12 H₂O + 12 NADP⁺ + 18 ADP + 18 [tex]P_i[/tex] + light → 6 O₂ + 12 NADPH + 18 ATP
In essence, water (H₂O) is split in the presence of light, releasing oxygen (O₂), which is a by-product. The main products, ATP and NADPH, are then utilized in the light-independent reactions to synthesize glucose and other carbohydrates from carbon dioxide (CO₂) and water (H₂O).
What factors are most important when deciding what information to use?
A. It must agree with your ideas and be from secondary data.
B. It must agree with your ideas and be reliable.
C. It must be unbiased and verifiable.
D. It must be verifiable and from primary data.
C is the correct answer.
the information must always be verifiable, but it can still be secondary data rather than primary.
Answer: C. It must be unbiased and verifiable.
Explanation:
The information which is unbiased and verifiable can be considered as most important when deciding it's use. This is because of the fact that the biased information may be generated by manipulation, can be inaccurate or unreliable. The information should be verifiable which means it can be rectified using several sources and experimental trials.
When did oxygen levels start to decline from 35 percent down to today's levels during what period
about 95 million years ago, during the Carboniferous Period
Answer:
During Carboniferous period, part of the late Paleozoic era.
Explanation:
In the geological story oxygen levels have been relatively stable for the las 200 million of years, but 300 million ago there was a dramatic spike in Oxygen levels until 35% in the Carboniferous , next it plunged in 15 percent in the Triassic, 100 million years later. The growth of the forests removed huge amounts of carbon dioxide from the atmosphere, leading to a surplus of oxygen. The higher oxygen concentration is related with the presence of larger bodies in reptile and insects.
Which statements describe the functions of DNA? Check all that apply.
DNA destroys bacteria and viruses that cause sicknesses in organisms.
A. DNA plays a role in the growth and reproduction of organisms.
B. DNA stores energy for the organism to use in the future when food is scarce.
C. DNA guides the formation of an organism's structures.
D. DNA helps organisms function by telling them how to function.
Answer:
DNA plays a role in the growth and reproduction of organisms.
DNA guides the formation of an organism’s structures.
DNA helps organisms function by telling them how to function.
Answer:
b,d,e
Explanation:
Why can two igneous rocks have the same minerals but different names?
-The rocks may have different textures.
-The rocks may be of different sizes.
-The rocks may have different colors.
-The rocks may be found in different areas.
Answer:
The rocks may have different textures
Explanation:
If we have to igneous rocks, and they have the same minerals, that doesn't necessarily means that they will have the same name, thus being classified as the same rock. The reason for this is that the two igneous rocks may have a different texture. One of the rocks may have a foliated, while the other may have porphyritic, giving them different appearance despite the same minerals being in both of them. The reason why two igneous rocks with the same minerlas may appear different, is the process in which they have been formed, the quickness of the cooling, the temperature that they were exposed to, and the pressure they were exposed to.
Answer:
they have different textures
Explanation:
The branch of Earth science that focuses on objects beyond Earth's atmosphere is
A. astronomy.
B. oceanography.
C. geology.
D. meteorology.
Answer:
A.
Explanation:
because it studies the key word Astro which means astrophysics which is stars good luck
why do sex linked traits follow different patterns of inheritance than other traits
Answer:
Because the chromosome linked with sex are XX for women and XY for men.
Explanation:
So the boy can only get Y from his father and X from his mother. While girl can get one from the only X of her father and the other from her mother.
Answer:
Males only have X chromosomes
Explanation: