Si usted sitúa un grupo de plantas verdes (que realizan fotosíntesis) dentro de un ambiente rico en CO2 (dióxido de carbono) con el carbono marcado radiactivamente, es decir, puedo seguir el rastro del carbono. ¿En qué moléculas espera encontrar la marca al interior del cuerpo vegetal?
Answer: Esperaría encontrar la marca en el interior de moléculas de glucosa ya que el CO2, ya que se utilizan 6 moléculas de CO2 para sintetizar una molécula de glucosa.
Explanation:
La fotosíntesis es un proceso utilizado por las plantas y otros organismos fotoautótrofos para convertir la energía de la luz en energía química que, a través de la respiración celular, puede utilizarse para llevar a cabo distintas actividades metabólicas. Esta energía química se almacena en moléculas de carbohidratos, como los azúcares, que se sintetizan a partir de dióxido de carbono y agua. También se libera oxígeno como producto de desecho.
La energía de la luz es absorbida por unas proteínas llamadas centros de reacción que contienen pigmentos verdes de clorofila. En las plantas, estas proteínas se encuentran en el interior de unos orgánulos denominados cloroplastos, que son los más abundantes en las células de las hojas, mientras que en las bacterias están incrustadas en la membrana plasmática. En estas reacciones dependientes de la luz, se utiliza una parte de la energía para despojar de electrones a sustancias adecuadas, como el agua, produciendo gas oxígeno. El hidrógeno liberado por la ruptura del agua se utiliza en la creación de otros dos compuestos que sirven como almacenamiento de energía a corto plazo, permitiendo su transferencia para impulsar otras reacciones: estos compuestos son el nicotinamida adenina dinucleótido fosfato reducido (NADPH) y el adenosín trifosfato (ATP), la "moneda energética" de las células.
El almacenamiento de energía a largo plazo en forma de azúcares se produce mediante una secuencia posterior de reacciones independientes de la luz denominada ciclo de Calvin. En el ciclo de Calvin, el dióxido de carbono atmosférico se incorpora a compuestos de carbono orgánico ya existentes, como la ribulosa bifosfato (RuBP). Utilizando el ATP y el NADPH producidos por las reacciones dependientes de la luz, los compuestos resultantes se reducen y se eliminan para formar más carbohidratos, como la glucosa.
Entonces, si el carbono en la molécula de dióxido de carbono (CO2) se encuentra marcada radiactivamente, esperaría encontrar la marca en el interior de moléculas de glucosa ya que el CO2, ya que se utilizan 6 moléculas de CO2 para sintetizar una molécula de glucosa.
The Trans-Pecos ecoregion in the western portion of Texas
receive less than 38 cm of rainfall a year and has little soil due
to overgrazing by farm animals. What catastrophic event is
most likely the cause the most weathering and erosion in the
least amount of time in this ecoregion?
1.Wildfire
2.Earthquake
3.Flood
4.Tornado
Answer:
3.Flood
Explanation:
Flood is the catastrophic event which is the main cause of the most weathering and erosion in the least amount of time in this ecoregion because there is no vegetation present in this region and the soil is vulnerable for erosion. Flash-flooding and rapid runoff are agents of erosion in the Trans-Pecos ecoregion of Texas whenever the rainfall occurs. Vegetative is very important for preventing soil erosion so the people of this region has to stop overgrazing in this area in order to avoid more erosion of the soil.
describe properties of minerals.
Which of the following is something that all living organisms have in common ?
A.) They all contain at least one cell .
B.)They all need a source of oxygen .
C.) They all use other organisms for food .
D.)They all find mates to reproduce .
Explanation:
B is absolutely correct answer.
When people work with volatile organic
compounds, why should they wear special masks
that cover their noses and mouths
Answer:
harmful to the lungs........................
Do any varieties of cyanobacteria living today produce stromatolites?
A: Yes
B: No
Answer: yes
Explanation:
Stromatolites, also known as layered rocks, form in shallow waters when biofilms of living microorganisms, like cyanobacteria, trap sediment. Most stromatolites grow in extremely salty lagoons or bays, in places like Australia, Brazil, Mexico and the Bahamas.May 30, 2013
OK THIS IS SO TRUE |
(look in pic)
Answer:
fr
Explanation:
ayyyy check out my last questions
If the ocean current starts near the equator, can it warm up the air of any location it passes? *
Yes
No
Answer:
NO
Explanation:
Areas near the equator receive more direct solar radiation than areas near the poles. However, these areas do not constantly get warmer and warmer, because the ocean currents and winds transport the heat from the lower latitudes near the equator to higher latitudes near the poles
Which catastrophic event would most likely result in trees being knocked over and the
disappearance of most of the plants and animals along a narrow path in a forest
ecosystem?
Answer:
tornado
Explanation:
earthquakes dont cause for the disappearance of most of the plants and animals, flash floods are widespread, between volcanos and tornadoes, tornadoes fits the description better.
The catastrophic event that resulted in trees being knocked should be considered the tornado.
What is a tornado?It is the column that contains the small diameter with respect to the violence that rotated the air developed. It arises the thunderstorms at the time of spring and summer in the mid-latitude.
Also, the earthquake does not leads to the disappearance for mostly plants and animals.
hence,
The catastrophic event that resulted in trees being knocked should be considered the tornado.
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I need help, please.
Answer:
Explanation:
I dont get the question its just a chart
Define The process of respiration.
Answer:
It is the oxidation of food substances to release energy for metabolic activities
Explanation:
it is a biochemical process which involves the breaking down of food substances by the cell with or without oxygen for metabolic activities
Explanation:
Respiration is defined as a metabolic process wherein, the living cells of an organism obtains energy (in the form of ATP) by taking in oxygen and liberating carbon dioxide from the oxidation of complex organic substances.”
state one adaptation of nephron in the kidney of a desert mammal
Answer: The desert animals do not get appreciable amount of water quantity to survive on daily basis instead their body mechanism tries to conserve water by concentrating urine.
Explanation:
The desert mammal like kangaroo rat produces hyper concentrated urine so as to conserve water. It is facilitated by extremely long loop of Henle in their nephron. The long loop of Henle increases the time and space for absorption of water and nutrients from the urine filtrate. Hence, urine so produced is more concentrate and conserve water. Moreover, the kangaroo rat consume their urine to survive in extreme hot desert condition in scarcity of water.
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science
Complete the table below to show the difference between active and passive transport. Put a “X” in boxes that satisfy the statement.
Answer:
Active transport:
requires energymolecules move from low to high concentration sidesNa+ and K+ move by active transportSimple diffusion:
molecules move from high to low concentration sidesmolecules pass between lipids small non-polar and polar moleculesFacilitated diffusion:
molecules move from high to low concentration sidesinvolves channel proteinsmove large moleculesExplanation:
Simple Diffusion is the pathway of only small molecules that freely move through the membrane by momentary openings produced by the lipids' movements. Diffusion is a slow process that requires short distances and pronounced concentration gradients to be efficient. An example of diffusion is osmosis by which water is the transported molecule. Facilitated diffusion is the transport of hydrophilic molecules that can not freely cross the membrane. Channel protein and many carrier proteins are in charge of this transport. When uncharged molecules cross the membrane, they do it according to their concentration gradients, going from the more concentrated side to the lower concentrated one. When ions need to cross the membrane, the process depends on an electrochemical gradient. Glucose is an example of a hydrophilic protein that gets into the cell by facilitated diffusion.Simple diffusion and facilitated diffusion are both passive transport processes because they only depend on electrochemical gradients, so they do not need any energy to occur.
Active transport is the transport of molecules that move against the electrochemical gradient, so it does need energy to happen. Molecules move from the lower concentration side to the higher concentration side of the membrane. Carrier proteins are in charge of active transport. The needed energy might proceed from the ATP molecules or the membrane's electric potential. An example of molecules moved by active transport are the Na and K.In Active transport, molecules or ions move against the concentration gradient by using energy from ATP.
What is Membrane transport?The transfer of molecules across the plasma membrane into or out of the cell.
There are two types of membrane transport,
1. Passive transport:
When molecules move along the gradient. It can be of two types,
Simple diffusion (via phospholipids)Facilitated diffusion (via channel protein)2. Active transport:
When molecules move against the concentration gradient, they require energy. Energy is given by ATP.
Therefore, in Active transport, molecules or ions move against the concentration gradient by using energy from ATP.
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Read the following scenario to answer the following question. Avian influenza is a viral infection with few damaging effects that naturally occurs in wild birds. However, avian influenza is highly contagious and can quickly kill domesticated birds. Some human influenza viruses are similar to the avian influenza. People infected with avian influenza develop typical flu symptoms (fever, cough, muscle aches). However, symptoms may become more severe and life-threatening. If avian influenza evolves into a form that is easily transmissible from person to person, a global pandemic of widespread human death might occur. Which cells would be active during an immune response to a viral infection
Answer:
T lymphocytes, ADCC, macrophages, natural killer (NK) cells, lymphokines, and monokines.
Explanation:
T lymphocytes, ADCC, macrophages, natural killer (NK) cells, lymphokines, and monokines are the cells that are active during an immune response to a viral infection. These cells attack on the virus that is responsible for the infection. If the immune system is strong and these cells kills all viruses then no viral infection occurs while on the other hand, if these cells can't control the virus, the virus will cause infection in the body so these cells plays a vital role in prevention of infection.
what do we call the flight in bees whereby the go and mate and the drones are killed after mating has occurred?
Answer:
I believe it's called mating flight
Which of the following is NOT made up of atoms?
“Heat”
“A gas”
“A cell”
“A solid”
Answer:
A solid or Heat.
Explanation:
i think it is a solid.
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Help plz asap asap plz
Answer:cholem im pretty surw
Explanation:
A newborn puppy has 2 alleles for floppy ears. During which part of the reproductive process did the
alleles separate as the puppy was developing?
O meiosis
O mitosis
O DNA replication
O fertilization
Answer:
the answer is meiosis
dat the answer
Please help me. no links I report you
Answer:
c
Explanation:
because if it is constant that mean it has the same forward and backward force.
How does an ATP molecule release
energy for cells?
A. hydrolysis
B. breaking the bond between the 2nd and 3rd phosphate
C. removing the ribose sugar
Answer:
B
Explanation:
when one phosphate group is removed by breaking a phosphoanhydride bond in a process called hydrolysis, energy is released.
The ATP molecule releases energy for cells by breaking the weak phosphate bond and converting it to ADP. This process is called A. hydrolysis.
What is the hydrolysis of ATP? Our body requires energy to perform various body activities and functions. This includes muscle contraction, digestion, transportation of molecules etc. This energy comes from the breakdown of ATP. The ATP molecule that is generated during the respiration process is broken down into ADP. This process is called the hydrolysis of ATP. The energy that is released during the breakdown of ATP is used to perform the required functions. Out of the three phosphate bonds, the weak phosphate bond is broken down to fulfil the energy needs of the body.Thus, whenever the cell requires energy, the ATP is broken down into ADP by the process of hydrolysis.
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Why are viruses not considered living organisms by most people?
Answer:
Viruses are not considered living organisms because they require a host cell to replicate, unlike living organisms which can replicate on their own.
What is true about electromagnetic waves from the sun? A. They travel through space without a medium B. They consist of electric change emitted by the sun C. They are attracted to Earth's north and south magnetic poles D. They consist entirely of infrared waves
Answer:
Option A) is correct.
Explanation:
Electromagnetic waves refer to waves that are created due to vibrations between a magnetic field and an electric field.
Electromagnetic waves do not require a medium to travel through space without a medium. Electromagnetic waves can travel through air, vacuum of space and solid materials.
So,
Option A) is correct.
Which one:
-a autosomal recessive trait
-a sex-linked trait
-a polygenic trait
-a autosomal dominant trait
A scientist thinks he has discovered a drug that
interferes with the functioning of a virus in the
human body. To effectively block infection, the
drug can
I
A weaken viral respiration.
B destroy viral mitochondria.
C reduce the ability of the virus to absorb cells.
D prevent the virus from entering cells.
Answer:
DExplanation:
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Gressel the Goblin is making an inventory of Darklord Ganondorf’s treasure horde following a raid by some violent fellow named link. The horde now contains only 2150 gems (as in $). Gressel notices that there were twice as many green-gems (worth 1) as blue-gems (worth 5) and 13 fewer blue gems than red-gems (worth 20). How many red, blue and green gems are there remaining in the horde?
➥ Let the number of blue gems be x, green gems be 2x and red gems be x + 13.
According to question,
5x + 1 × 2x + 20(x + 13) = 2150
On solving equation, we get
27x + 260 = 2150
27x = 2150 - 260
27x = 1890
x = 1890/27 = 70 blue gems.
2 × 70 = 140 green gems.
70 + 13 = 83 red gems.
Hence, We have 70 blue gems, 140 green gems and 83 red gems.
Which statement describes a difference between predators and prey? Choose the correct answer. A Prey are types of plants, whereas predators are types of animals. B Prey remain in one place, but predators move around within the ecosystem. C Prey get energy only from plant materials, and predators eat only animals. D Prey are hunted for food, and predators capture and eat other animals to get energy.
Answer:
D
Explanation:
The rest can all be ruled out
-best of luck!
Answer:
D Prey are hunted for food, and predators capture and eat other animals to get energy.
Please help!!!!! Also please no links very annoying
Which description best contrasts the roles of the small and large intestines?
The small intestine breaks down compounds, while the large intestine absorbs water
The small intestine stores food waste, while the large intestine removes food waste.
The small intestine takes In nutrients, while the large intestine eliminates waste.
The small intestine excretes Juices to digest food, while the large intestine absorbs nutrients.
Answer:
The small intestine takes in nutrients, while the large intestine eliminate waste.
Explanation:
Small intestine doea not break down compounds, it is stomach's job. It is good at absorbing nutrients. Large intestine does not usually absorb nutrient, it absorbs water and eliminate waste. So combine all of this, the best answer is the third one.❤️
Do hurricanes occur in the Midwest? Why or why not?
Answer:
Hurricanes are not common in the Midwest. However, if a hurricane is particularly strong, it can move far enough northward and inland to cause a significant rain event for areas in the Midwest.
Why do animals need carbohydrates in their diets?
A) Carbohydrates can be used by the cells in the body for energy.
(В)
Carbohydrates are the building blocks for muscles and tissues.
©
Carbohydrates are used in the absorption of water molecules.
D
Carbohydrates provide insulation for organs in the body.
Answer:
A. Carbohydrates can be used by the cells in the body for energy.
Explanation:
Carbohydrates are the basic source of energy for all animals. Animals obtain their carbohydrates from the external environment (compared with plants, which synthesize carbohydrates by photosynthesis). About one-half to two-thirds of the total calories every animal consumes daily are from carbohydrates.
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Complete the table to describe the processes and outcomes of the different types of gene (point) mutations.
Substitution Insertion:
Deletion:
Answer:
Insertions are mutations in which extra base pairs are inserted into a new place in the DNA. Deletions are mutations in which a section of DNA is lost, or deleted.
Explanation:
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