what is the answer for this question?

Four classes of organic compounds containing carbon are carbohydrates, proteins, lipids, and nucleic acids. The carbon cycle involves photosynthesis which gives proteins to plants and animals. plants get their carbon from the air and their nitrogen from the soil.

Every living thing contains organic molecules like lipids, proteins, carbohydrates, and nucleic acids. Large carbon-based structures make up these macromolecules.

Carbon is shared between living things and their environment during the carbon cycle. It describes how carbon moves when it is recycled and used again. Since carbon is the primary component of biological compounds, it is crucial for photosynthetic organisms to absorb carbon dioxide (CO₂) from the atmosphere, use it to make organic molecules like carbohydrates, lipids, proteins, and nucleic acids, and then release it back into the atmosphere as CO₂ during respiration.

On the other hand, plants cannot absorb nitrogen from the atmosphere in the form of the gas N₂. It is transformed by bacteria into ammonia (NH₃), a type of nitrogen that plants may use, as part of the nitrogen fixation process. Animals ingest useable nitrogen molecules when they consume plants.

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The initial mass of iodine decay after t days is 6 g

How much of the mass remains after 20 days is 1.053 g

Here's the complete question:

Doctors use radioactive iodine as a tracer in diagnosing certain thyroid gland disorders. This type of iodine decays in such a way that the mass remaining after

m(t) = 6e−0.087t

where m(t) is measured in grams.

a) Find the initial mass (mass at time t = 0).

b) How much of the mass remains after 20 days?

a) Find the initial mass (mass at time t = 0).

m(t) = 6e-0.087t

The unit t  is assume to be in  days.

m(0) = 6e⁰ g = 6 g

b) How much of the mass remains after 20 days?

Using the equation

m(x) = ne⁻⁰°⁰⁸⁷⁽²⁰⁾

m(20) = 6e⁻⁰°⁰⁸⁷⁽²⁰⁾  g ≅ 1.053 g

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The number of half lives that have passed is obtained from the question is 3 half lives.

We know that many times, the scientist is faced with the issue of trying to date a material. This is because, we often need to know the exact period in which the material may be rightly said to belong. This have helped us to decode the age of so many materials that we have in the world today.

The half life is the time that it takes for only half of the radioactive materials to remain in a sample. We have been told that Potassium-40 decays into Argon-40, known as K-Ar dating. Potassium-40 has a half-life of 1.25 billion years. The task that we now have is to be able to Identify the number of half-lives passed after 3.75 billion years.

We can now say that the number of the half lives is;

3.75 * 10^6 years/ 1.25 *  10^6 years

= 3 half lives

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Certain species of Lactobacillus ferment glucose into mainly lactic acid in a process termed homolactic fermentation, while other species of Lactobacillus ferment a mixture including lactic acid, acetic acid and carbon dioxide in a process termed heterolactic fermentation.

Through the activity of enzymes, the metabolic process of fermentation causes chemical changes in organic substrates. In biochemistry, fermentation is specifically described as the process of obtaining energy from carbohydrates without the presence of oxygen. In the context of food production, the term may be used more broadly to describe any procedure in which the action of microbes results in a desired modification to a food or beverage. Zymology is the field that studies fermentation.

By anaerobically degrading organic resources, fermentation is the main mechanism by which microbes produce adenosine triphosphate (ATP).

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It appears to be in charge of many of the processes that support creative thinking, the frontal cortex has been referred to as the hub or center of creativity.

The brain is a complex organ that manages every bodily function as well as thought, memory, emotions, touch, motor skills, vision, breathing, temperature, and hunger. The central nervous system or CNS, is made up of the spinal cord that emerges from the brain.

Billions of nerve cells in your brain are organised in patterns that help you think, feel, act, move, and sense things. Your brain and the rest of your body are connected by a vast system of nerves that allow for rapid communication.

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The image depicts erosion, specifically soil erosion. Soil erosion is the gradual deterioration of soil caused by the impact of water or wind on soil particles.

Ways to prevent soil erosion :

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When R is doubled, the charge will become 4 times the origInal charge.

The quantity of electric charge that may be stored for every unit change in electric potential is known as capacitance. When two parallel plates are placed over a battery and separated by a certain distance, the given plates begin to charge progressively, and an electric field is created between them.

Q = CV

Q is the charge

C is capacitance

V is voltage passed

C= (Aϵ0)/d

A is the area of the plate

d is distance between the plates

Since its a circular disc, A = πR^2

R is the radius of the plate

C= ((πR^2)ϵ0)/d

When R is doubled it becomes 2R

C= ((π(2R)^2)ϵ0)/d

C= ((π4R^2)ϵ0)/d

C= 4(((πR^2)ϵ0)/d)

Recall that

((πR^2)ϵ0)/d = C

Therefore, the new

C = 4C

Q = CV

When C = 4C

Q = 4CV

Put Q = CV

Q = 4Q

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This model best represents the role of carbon dioxide in trapping heat from radiation in the green house effect.

What is the green house effect?

By means of "greenhouse gases," heat is held in close proximity to the Earth's surface, creating the greenhouse effect. The world is kept warmer than it would be without the help of these heat-trapping gases, which act as a blanket surrounding the planet.

Most of the sun's visible light can travel through the atmosphere and reach the surface of the Earth. When sunlight heats the Earth's surface, some of the energy is radiated back into space as infrared radiation. Contrary to visible light, this radiation has a tendency to be absorbed by the greenhouse gases in the atmosphere, increasing its temperature. Infrared radiation is sent back toward the surface of the Earth by the heated atmosphere. (Despite its name, the greenhouse effect is not the same as the warming in a greenhouse, where glass panes transmit visible sunlight but hold heat inside the building by trapping warmed air.)

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Answer:

C

Explanation:

because there is uracil instead of thymine. thymine is found in dna and uracil is found in rna

The cause of lactic acid build-up in our muscles is a lack of oxygen to metabolize or break down glucose. When anaerobic respiration takes place, the ph of the blood decreases. The substance found in the blood when anaerobic respiration takes place is lactic acid. When lactic acid fermentation occurs, lactic acid gets deposited into the blood, which leads to an increase in blood acidity and reduction of blood ph. Alchoholic fermentation doesn't occur in humans but is a form of anaerobic respiration that occurs in yeasts. The form of respiration that involves oxygen and carbon dioxide is aerobic respiration.

Our body derives energy by metabolizing glucose in the presence of oxygen in the cytosol and mitochondria of the cell. This form of respiration is called aerobic respiration. However, when oxygen is absent, the body undergoes anaerobic respiration in the form of lactic acid fermentation.

Lactic acid fermentation mainly occurs in muscle cells. Here, one glucose molecule is broken down to produce two molecules of lactic acid and energy. The body cannot further metabolise lactic acid, hence, it builds up in the muscle cells and the blood. The blood is normally slightly alkaline, but when it contains excess lactic acid, it becomes more acidic, leading to a medical condition called lactic acidosis.

Alchoholic fermentation doesn't occur in humans. It occurs in yeasts and some other bacteria. Carbohydrates are broken down by various enzymes to produce energy, alchohol and carbon dioxide.

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In epithelial tissues there is little or no intercellular space between the cells.

The correct option is D.

There are many epithelial tissues in the human body. They make up the majority of the tissue in glands, line body cavities and hollow organs, and cover all of the body's surfaces. Protection, secretion, absorption, excretion, filtration, diffusion, and sensory reception are just a few of the many tasks they carry out.

The body's fundamental tissue barriers are the epithelia; they divide tissue into compartments, allow for the exchange of nutrients and waste products, and shield the body from the outside environment.

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The complete question is-

In epithelial tissues ________.

A) cells that are damaged or lost at the surface cannot be replaced

B) cells obtain nutrients via blood vessels found in the tissues

C) extracellular fluid or fibers separate the individual cells

D) there is little or no intercellular space between the cells

E) the organelles and other cytoplasmic components are evenly distributed between the exposed

Answer:

Gluconeogenesis and glycogenolysis

Photons of light are absorbed by electrons in NADPH, increasing its energy.

Although it operates similarly, photosynthesis requires the distinct fuel NADPH. A high-energy electron and proton are taken up by the low-energy form NADP+ and transformed into NADPH. NADPH changes back to NADP+ when one electron is lost. Overall, this process transforms light energy into chemical energy in the form of ATP and NADPH.

The Calvin cycle, the following stage of photosynthesis, uses ATP and NADPH from the light-dependent process to produce carbohydrates. Two electron transport chains work together to make ATP and NADPH. During the photoreaction, oxygen and water are both consumed. Since the process starts with sunlight, these reactions can only occur in the sun. the moment the photosystem is reached by an electron from the electron transport chain.

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Answer:

The point at which you are no longer human is subjective to yourself.

Explanation:

If you replace the broken parts of a ship over decades and decades as it slowly breaks down, you don't ever have a completely different ship, even after all the parts have been replaced. Fixing something thats broken doesn't detract from what it was originally.

Explanation:

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A molecule of oxygen needs to cross three (3) phospholipid bilayers when moving from outside of a eukaryotic cell to eventually be reduced by complex iv of the electron transport chain.

Cellular respiration is a cellular process that involves oxide reduction reactions of oxygen molecules, which occur inside the mitochondria, a type of cell organelle that has two membranes.

Therefore, we can conclude that a molecule of oxygen needs to cross 3 phospholipid bilayers during the electron transport chain, which are represented by the cell membrane and external and internal membranes of the mitochondria.

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Adhesive force is the force of attraction that exists between the molecules of two different substances. This force helps to bind the two objects together.

3 everyday examples of adhesive properties of water:-

Painting: Applying a coat of paint on the walls or any furniture is the perfect example of adhesive force in action.

Wet Surface: When water falls on any surface, it spreads out thoroughly. This spreading of water causes an intermolecular attraction to get developed between the water molecules and the surface molecules.

Capillary Action: If you place a thin straw in a glass of water, the water will be attracted to it. If the adhesive attraction between the water and straw is stronger than the water's cohesive attraction with itself, water will move up the straw unassisted. This is how plants bring water from the soil up into their leaves.

Cohesion on the other hand is the intermolecular (between-molecules) attraction between molecules of the same type, which in this case is the attraction between molecules of water.

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Answer: photovoltaic devices

Explanation:

Answer:

ATP production depends upon respiration

oxygen requirement depends on the type of respiration (aerobic or anaerobic) the cell does.

Explanation:

for anaerobic --->no oxygen is required e.g.red blood cells do not respire aerobically, only glycolysis produces ATP are utilized

for aerobic ----->oxygen is required.e.gliver cell

Answer:

To warm up the Earth.

Explanation:

Carbon dioxide in the atmosphere warms the planet causing climate change.

Answer:

What are multiple alleles? In biology, multiple alleles are three or more alleles for a particular gene. Multiple allelism (biology definition): The condition of the presence of multiple alleles. An example of multiple alleles is the ABO blood group system in humans.

Answer:

1.Reduce, reuse, and recycle. Cut down on what you throw away. ...

Volunteer. Volunteer for cleanups in your community. ...

Educate. ...

Conserve water. ...

Choose sustainable. ...

Shop wisely. ...

Use long-lasting light bulbs. ...

Plant a tree.

Acetyl call age is the major precursor to all glycerophospholipids.

Glycerophospholipids are detergents and, as such, they reduce water surface tension and stabilize the dispersion of hydrophobic compounds (cholesterol and neutral fats) in aqueous solutions. The capacity of phospholipids to function as detergents is important in bile, where they favor the solubility of cholesterol.

in the given question, this is part of the concept of a cycle basically in biology. So this compound is not considered a precursor for the production of glucose neurogenesis in humans, which is the correct answer, we have the Acetyl Call Age. The reason is that always remember that the gluconate eugenic pathway converts pyre of eight two glucose and non-carbohydrate precursors of glucose are first converted into paraguay or even in the pathway at later intermediates such as axel acetate and the hydro accident phosphate, the main non-carbohydrate precursor, our lactate, we have lock band, we have amino acids and also glycerol. In the human body, glucose cannot be synthesized from fatty acids because they are converted by beta-oxidation to acetyl coenzyme, which then enters the citric acid cycle where it is oxidized to carbon dioxide. The starting materials for glucose neurogenesis. Our three carbon compounds including lactate pyre of it and we also have glycerol and certain amino acids, fatty acids and ketogenic amino acids cannot be used to synthesize glucose. The transition reaction is a one-way reaction, which means that the acid still cannot be converted back to piracy. Consequently, fatty acids cannot be used to synthesize glucose because better oxidation will produce acidic alkalis. Acetylcola is therefore not considered a precursor for the production of glucose.

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Answer:

true

Explanation:

Explanation:

An endothermic reaction is a chemical reaction that absorbs (or use) energy overall.

An exothermic reaction is a chemical reaction that releases energy by light or heat.

'Along with major storms, humans (biosphere) constructed a dam out of rock materials' (lithosphere). The lake's water (hydrosphere) seeps into the cliff walls behind the dam, eventually becoming groundwater (lithosphere) or evaporating into the atmosphere (atmosphere).

Hence, 'Along with major storms, humans (biosphere) constructed a dam out of rock materials' (lithosphere).

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Answer: In metaphase of meiosis the homologous pairs of chromosomes line up on the metaphase plate, near the center of the cell. This step is referred to as a reductional division. The homologous chromosomes that contain the two different alleles for each gene are lined up to be separated.

Explanation: Don't know if it helps

The name of the naturally occurring salt Na CI is Halite.

What is Na Cl?

One of the most prevalent minerals on Earth is sodium chloride (NaCl), more generally known as salt. Many animals and plants require salt as nutrition. Seawater and subterranean rock formations both naturally contain sodium chloride.

Salts are ionic substances in chemical language. Most people understand salt to be the sodium chloride compound found in table salt. Ionic bonds between sodium ions and chloride ions produce sodium chloride. NaCl is the chemical formula because there is one sodium cation (Na+) for every chloride anion (Cl-). Every cell in our body depends on salt and, more specifically, the sodium ions (Na+) that are part of the salt's NaCl structure. Sodium and potassium-containing compounds are electrolytes, which are chemicals that dissolve in water and release ions.

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Answer:

I think its c or d

Explanation: