he enzyme pepsin breaks down proteins from food into peptides and originates from cells lining the stomach. what mechanism prevents pepsin from digesting the stomach's own cells

Answer:

Explanation:

Organic molecules are the molecules which exist in all living things. They are life's building blocks. All things are formed from these organic molecules.

Also known to raise the risk of schizophrenia are genetic duplications or deletions that can impact several genes on any one of many chromosomes.

There is no known precise aetiology of schizophrenia. According to research, a person may be more susceptible to acquire the illness if a combination of physical, genetic, psychological, and environmental variables are present. Because certain people are predisposed to schizophrenia, a difficult or upsetting life experience might set off a psychotic break.

Serotonin, dopamine, and glutamate, three neurotransmitters (brain chemicals), are thought to be out of balance in schizophrenia sufferers. These neurotransmitters enable communication between nerve cells in the brain.

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Answer:

An onion cell

Explanation:

Both are eukaryotic cell. An onion cell is a plant cell having cell wall but cheek cell is an animal cell lacking cell wall.

they are both cells but, Onion cell is a plant cell with a cell wall and a large vacuole. While the human cheek cell is an animal cell with a prominent nucleus. Onion cells are brick-like in shape while human cheek cells are rounded. Human cheek cells do not have a cell wall or a large vacuole.

whether frame +2 has an ORF in the coding region of this exon depends on the sequence of the exon. There are three stop codons out of 64 possible codons, so the chance of having a stop codon at any given position in a random sequence is 3/64, or approximately 0.0469 or 4.69%.

To determine whether an ORF is present in frame +2, the exon sequence needs to be translated in that reading frame, starting at a valid start codon (usually AUG). If the translation produces a peptide chain of sufficient length (typically at least 100 amino acids) that does not contain a stop codon, then an ORF is present.

If a stop codon occurs within the coding region, then the ORF is terminated. Therefore, without knowing the specific sequence of the exon, it is impossible to determine whether frame +2 has an ORF in the coding region.

Similarly, the same approach can be used to determine whether frame +1 and frame +3 have ORFs in the coding region, depending on the exon sequence and the presence of a valid start codon.

The chance of having a stop codon at any given position in a random sequence is 0.0469 or 4.69%. This assumes that each of the 64 codons is equally likely to occur at any given position, which may not always be the case in real sequences due to biases in codon usage or other factors. However, in general, stop codons are relatively rare compared to other codons, which are more likely to encode for amino acids.

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Answer:

Carbon dioxide enters the alveoli, and oxygen enters the capillaries.

Explanation:

This describes the exchange of gases in the lungs. When blood from the rest of the body gets to the lungs through the capillaries, oxygen flows from the alveoli which are tiny air sacs in the lungs, into the blood in the capillaries.

Carbon dioxide from the blood brought to the lungs will then flow into the alveoli which will then expel it through the nose. This repeated process ensures that the body keeps getting oxygen and expelling carbon dioxide.

Answer:

Exchange of Gas takes place in lungs between the alveoli and capillaries which are tiny blood vessels, placed at the walls of alveoli. The rate of diffusion depends on the thickness of the biological membrane which forms the boundary between the external environment and organisms.

Explanation:

Hope it helps

have a good day

Answer:

cells

Explanation:

cells makeup every single living thing on Earth including us humans they are the main structure of every human thing on earth will every living thing on Earth including us humans

Answer: Plants are autotrophs, which means they produce their own food. They use the process of photosynthesis to transform water, sunlight, and carbon dioxide into oxygen, and simple sugars that the plant uses as fuel.

Answer:

fertile soil is the renewable source

The ribosome is where ribosomal RNA, commonly known as rRNA, is found. Strands of DNA are unzipped.

80% of the total RNA in a cell is made up of rRNAs, which are located in ribosomes. The 50S subunit, which is a substantial component of ribosomes, and the 30S subunit, which is a smaller component, are each made up of unique rRNA molecules.

an RNA ribosome All living things need ribosomal ribonucleic acid (rRNA), which is the RNA component of the ribosome and crucial for protein synthesis. About 60% of the ribosome's mass is made up of rRNA, and the remaining 40% is made up of protein.

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Answer: It helps mRNA move along the ribosome

Explanation:

Explanation:

Rainfall and surface runoff

Rainfall, and the surface runoff which may result from rainfall, produces four main types of soil erosion: splash erosion, sheet erosion, rill erosion, and gully erosion.

Answer:

true

Explanation:

The law of conservation of energy only applies to physics. The given statement is true.

"The law of conservation of energy states that energy cannot be created or destroyed, but it can be transformed". The law of conservation of energy is one of the fundamental laws of physics, and it states that energy cannot be created or destroyed, however it can be transformed.

We have many examples in daily life that shows the application of this law. An example is when an object falls to the ground: initially, the object has gravitational potential energy, and when it falls down, this potential energy is converted into kinetic energy (because the object gains speed).

There are some situations, however, where energy seems to be created or destroyed for example, during a car accident, it seems that the whole initial kinetic energy of the car has been destroyed when the car stops after the crash. This is not true in fact, the kinetic energy of the car has just transformed into thermal energy and sound energy during the crash.

Therefore, The law of conservation of energy only applies to physics. The given statement is true.

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1) Cell theory includes all the following except: D.all cell are of similar shape and size. The correct option is option D.

2) The organelle that is responsible for ATP production is: mitochondria. The correct option is option C.

3)The DNA of the cell in found in the: nucleus. The correct option is option A.

4) the organelle which makes proteins is: endoplasmic reticulum. The correct option is option B

5) the functions of the rough endoplasmic reticulum is to: make protein. Option B is the correct option.

6) the cell membrane is composed of two layers of: phospholipids with interspersed protein an sugar. Option B is the correct option.

7)the functions of the embedded integral protein is to: A improve the fluidity of the cell membrane. A is the correct option.

8) The cytoskeletal elements responsible for cellular locomotions during mitosis: microfilaments. A is the correct option.

9)when vessels are created in the endoplasmic reticulum they: fuse with the Golgi apparatus for protein packaging. The correct option is option D.

10) DNA can be found in both the? nucleus and mitochondria. A is the correct option.

11) paracrines is one way in which cells communicate. These chemical messengers: allow for gap junction communication. Option C is the correct option.

12) the main difference between eukaryotic and prokaryotic cell is: eukaryotic cells have a nucleus and prokaryotic do not. Option C is the correct option.

13) the movement of water h20 from an area of high water concentration to an area of low water concentration is? Osmosis. Option B is the correct option.

14) the form of transport that used energy (ATP) and moves molecules against their concentration gradient is: active transport. Option C is the correct answer.

15) the purpose of cellular respiration is: ATP production. The correct option is option A.

16)the type of tissue that lines the body cavities: Epithelial. The correct option is option A.

17) what would you expect to find lining the digestive tract which is responsible for nutrient absorption: microvilli. Option C is the correct answer.

18) what two word are used to classify epithelium in term of the number of cellular layers: simple and stratified. Option B is the correct option.

19)what component of connective tissue is designed for strength? collagen fibres. Option C is the correct option.

20)which type of cartilage is found in the fetal skeleton?hyaline cartilage. Option C is the correct option.

21)the function of the neuron is to: transmit impulses. Option C is the correct option.

22)which of the following organ system is involved in immunity? lymphatic. Option C is the correct option.

23)what is the function of the endocrine system? regulating growth and development. Option B is the correct option.

24) the two major divisions of the skeletal system: axel and appendicular. Option C is the correct option.

25) which of the following osteocytes is responsible for increased calcium levels in the blood? parathyroid. Option C is the correct option.

Cell biology is a branch of biology that studies the structure, function, and behavior of cells. It focuses on the physiological properties and how the cell works to provide life.

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Sun->Plant->lizard->snake->owl

For the terrestrial carbon cycle, approximately 60% of the carbon captured by photosynthesis is lost during plant respiration.

Plants absorb carbon dioxide from atmosphere during photosynthesis and use the process of carbon fixation to transform it into organic compounds like glucose. Plants do, however, also engage in respiration, which entails the breakdown of these organic molecules to provide energy for metabolic functions. Carbon dioxide, which is a byproduct of respiration, is released back into atmosphere.

About 60% of the carbon that plants capture during photosynthesis is expected to be lost through plant respiration in the terrestrial carbon cycle. This indicates that roughly 60% of carbon fixed by photosynthesis is released back into the atmosphere through plants' respiration. The recycling of stored energy back into a form that plants can use during respiration is a normal process that occurs as part of the carbon cycle. The fact that not all of the carbon fixed by photosynthesis is lost through respiration should not be overlooked.

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Answer:

b. plants and animal cells only

Explanation:

Answer:

I would say d. Electrons move quickly around the nucleus in an atom.

Explanation:

Eggs hatch under the conditions that are feasible.

Your question is incomplete  but I will tell you something about bhow eggs hatch.

Temperature: The temperature of the environment surrounding the egg is critical for hatching. Eggs must be kept at a specific temperature range that is optimal for the species of egg in question. For example, chicken eggs typically hatch at a temperature between 99-102°F.

Humidity: The humidity of the environment also plays a role in hatching. Eggs must be kept at a specific humidity range that allows the egg to lose or gain moisture as needed to prevent the embryo from drying out or becoming overhydrated.

Incubation time: Most eggs have a specific incubation time, which is the time the egg must be kept at the optimal temperature and humidity before hatching will occur. This time can vary widely depending on the species of animal and the type of egg.

Turning: Eggs must be turned regularly to prevent the developing embryo from sticking to the shell and to ensure that the egg receives equal amounts of heat and oxygen.

Nutrition: Some species of animals, such as birds, will lay eggs that contain a yolk that provides nutrition to the developing embryo. The yolk must be properly nourished and utilized for the egg to hatch.

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Rates of oxygen consumption were lower than rates of photosynthesis. As there is more oxygen in the atmosphere than carbon dioxide, photosynthesis happens more quickly than oxygen is used up.

The most advanced life on earth would have been green microbial slime without oxygen, according to research author David Catling. Fortunately, some bacteria were able to split water into hydrogen and oxygen in the early oceans. In fact, photosynthetic organisms still undergo this separation today.

They use the sun's energy to split the molecules of water, using the hydrogen they release as a byproduct to make organic compounds like carbohydrates.

According to conventional thinking, enormous amounts of this hydrogen-rich organic waste eventually became buried under the ground, allowing oxygen to build up in the atmosphere.

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Answer:

its naturally found in lightning and the northern and southern lights

Explanation:

Answer:

Answer: Oxygen = passive Carbon Dioxide = passive Fructose = Endosytosis glutamine = Active Sodium ion = Active Potassium ion = Active Protein molecule = Passive or Endocytosis

Explanation:

js trynna get points lol

The molecules can pass into the cell by passive transport, active transport, or endocytosis.

Molecule | Concentration Outside | Concentration Inside | Size | Polarity | Transport | Mechanism

Glucose High Low Small Polar Diffusion

Oxygen High Low Small Nonpolar Diffusion

Sodium High Low Small Ion Active transport

Chloride Low High Small Ion Active transport

Amino acids Low High Medium Polar Carrier-mediated transport

Large protein Low High Large Polar Endocytosis

Glucose and oxygen can pass into the cell by diffusion. Diffusion is the movement of molecules from an area of high concentration to an area of low concentration. Glucose and oxygen are both small molecules, and they are both polar. This means that they can dissolve in the phospholipid bilayer of the cell membrane.

Sodium and chloride can pass into the cell by active transport. Active transport is the movement of molecules from an area of low concentration to an area of high concentration. Sodium and chloride are both ions, which means that they are charged particles. This means that they cannot dissolve in the phospholipid bilayer of the cell membrane. Instead, they need to be transported across the membrane by special proteins called ion pumps.

Amino acids can pass into the cell by carrier-mediated transport. Carrier-mediated transport is a type of passive transport that uses carrier proteins to transport molecules across the cell membrane. Amino acids are polar molecules, but they are larger than glucose and oxygen. This means that they cannot simply diffuse across the cell membrane. Instead, they need to be transported across the membrane by carrier proteins.

Large protein can pass into the cell by endocytosis. Endocytosis is a process by which the cell engulfs large molecules or particles. The cell membrane forms a pocket around the molecule or particle, and then the pocket pinches off to form an endocytic vesicle. The endocytic vesicle then fuses with a lysosome, where the molecule or particle is broken down.

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Answer:

Population density naturally varies a great deal within each country according to climatic conditions, topography, mineral deposits, rainfall, soil cultivation, etc

Answer:

(C.) Make a graph for better visual representation.

Explanation:

The other answer is wrong, I just took the test.

Answer:

(C.) Make a graph for better visual representation.

Explanation:

right on EDGE 2021

Answer:

This question lacks options, however, it can be answered based on general understanding.

The green plant died because of absence of LIGHT

Explanation:

Plants (green) are autotrophic organisms i.e. organisms that are capable of synthesizing their own food via a process called PHOTOSYNTHESIS. However, on the other hand, mushrooms (kingdom FUNGI) are heterotrophic organisms i.e. rely on other organisms for energy source and cannot make their own food.

Green plants strictly require light energy from the sun in order to perform the process of photosynthesis. According to this question, a set of 25 green plants and 25 mushrooms were put in a cool, dark room for two weeks and watered daily with 50 mL of a 0.1% fertilizer solution. The green plants, despite the nutrients and regular watering dies because they were not exposed to LIGHT in order to make their food via photosynthesis. However, since light is not a requirement for mushrooms to obtain food, they will surely survive.

Answer:

False

Explanation:

An acquired trait is the character developed in an individual as a result of environmental influence. These traits are not coded by the DNA of a living organism and therefore cannot be passed on to future generations.

Answer:

its correct option is A)Nucleus

Explanation:

The Hardy-Weinberg condition that is most difficult to meet is most likely the no mutation condition.

The Hardy-Weinberg principle states that the frequencies of alleles and genotypes in a population will remain constant from generation to generation in the absence of evolutionary forces such as genetic drift, selection, gene flow, and mutation. In a laboratory setting where the population is controlled and isolated, the other three conditions (no genetic drift, no selection, and no gene flow) can be relatively easily met.

However, mutations are spontaneous changes in the genetic material that can introduce new alleles into a population. Since mutations occur randomly, they can disrupt the equilibrium predicted by the Hardy-Weinberg principle. Thus, it is challenging to prevent mutations from occurring in a laboratory setting, making it difficult to meet the "no mutation" condition.

Hence, the correct option is D.

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Answer:

It looks to me that those are plant genes. And plant genes use the atmosphere and the hydrosphere to take in carbon dioxide. CO2 is in the atmosphere and once consumed, sugar ( Glucose ) is created. H2O is part of the hydrosphere and when water is consumed, Oxygen is the output. All of the spheres of the earth ( biosphere, hydrosphere, geosphere, and atmosphere ) are interconnected to create the things we know and see.

Answer:

Most food webs have between 4 and 5 trophic levels

Explanation:

Energy flow: From the whole quantity of energy that reaches the earth's surface, autotroph organisms or producers only absorb 0.1 or 1%.

From the input of solar energy begins a unidirectional energy flow. It passes through all the organisms in the ecosystem, from autotrophs to heterotrophs, until it is eventually dissipated in the environment.  

There is an energy transfer from each trophic level to the next, and each level only uses 10% of this energy. This assessment is called "The 10% rule". As a general rule, only about 10% of the energy stored as biomass at one trophic level, per unit time, ends up as biomass at the next trophic level, in the same unit of time. The rest of the energy is used by the organisms in their own metabolism or dissipated as heat to the environment.

The progressive reduction of energy determines the number of trophic levels, which, in general, turns to be between 4 and 5.