⚠️⚠️⚠️ i will mark brainliest identify one level above and below alveoli, and list the levels of organisation in humans

Mitosis of fertilized eggs is not a source of genetic variation.

Genetic variation consequences in different forms, or alleles of genes. For example, if we look at eye color, people with blue eyes have one allele of the gene for eye color, whereas people with brown eyes will have a dissimilar allele of the gene. examples of genetic variation include eye color, blood type, camouflage in animals, and leaf moderation in plants.

The most usual form of genetic variants among individuals is the smallest, known as single nucleotide polymorphisms (SNPs) Mutations are the original source of genetic variation that happens when there is an error during DNA replication that is not corrected by DNA mend enzymes.

So we can conclude that Genetic variation is a term used to explain the variation in the DNA sequence in each of our genome

Learn more about Genetic variation here: https://brainly.com/question/14926046

#SPJ1

Option A is the correct option.

The mitochondrial cell organelles are in charge of obtaining energy from carbohydrates and converting it to ATP.

Adenosine triphosphate, or ATP, is the primary energy source used by cells to fuel their different processes. It is created via a process known as cellular respiration, which includes the release of energy through the breakdown of organic substances like glucose.

Eukaryotic cells include organelles called mitochondria, which are in charge of manufacturing the majority of the cellular ATP through cellular respiration. Because they generate the bulk of the cell's ATP through the process of oxidative phosphorylation, they are sometimes referred to as the "powerhouses" of the cell. During oxidative phosphorylation, energy is released that is used to make ATP as a result of the transfer of electrons from the breakdown of organic molecules to oxygen through a number of enzymes.

For such more question on mitochondrial

https://brainly.com/question/29023526

#SPJ4

Based on value of change in shoot biomass, the study reveals that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.

Ecology is the study of living organisms and their interactions with one another and their non-living environment.

From the observation of the study conducted:

Therefore, it can be concluded from the study that late plants benefited most from the introduction of soil invertebrates whole the early plants were worst affected.

Learn more about biomass at: https://brainly.com/question/82777

#SPJ1

In comparison to pandemic influenza virus strains, seasonal influenza vaccinations are not very effective. Since the influenza virus subtype that will cause the next pandemic is unknown, developing effective pre-pandemic vaccinations is challenging.

In the current study, we created a messenger RNA (mRNA)-lipid nanoparticle vaccine that encodes hemagglutinin antigens from each of the 20 known influenza A virus subtypes and influenza B virus lineages. Mice and ferrets that responded to all 20 encoded antigens were immunised with this multivalent vaccine, which resulted in significant levels of cross-reactive and subtype-specific antibodies. After being exposed to both matched and mismatched virus strains, vaccination shielded mice and ferrets, and this shielding was at least largely dependent on antibodies. Our research suggests that by simultaneously generating antibodies against several different antigens, mRNA vaccines can defend against viruses with varied antigens.

Learn more about mRNA here:

https://brainly.com/question/22664176

#SPJ4

Answer:

Pollution, climate change, and population growth are all threats to biodiversity. These threats have caused an unprecedented rise in the rate of species extinction. Some scientists estimate that half of all species on Earth will be wiped out within the next century.

Explanation:

The Making of the Fittest: Natural Selection in Humans: The evolution of human beings is thought to have occurred over a long period, with natural selection playing an important role.

Natural selection is a fundamental mechanism of evolution in which individuals with characteristics that are advantageous in a particular environment survive and reproduce more effectively than those without these characteristics.

In the case of humans, natural selection has led to a variety of characteristics that make them better suited to their environment. For example, humans have evolved larger brains than other primates, which allows them to develop more complex societies, create and use tools, and communicate more effectively. Additionally, humans have a unique ability to walk upright, which has allowed them to move more efficiently across the landscape and access new food sources.

Natural selection has also played a role in human disease resistance. Individuals with certain genetic traits that confer resistance to diseases such as malaria or smallpox are more likely to survive and reproduce than those without these traits. Over time, these traits become more common in the population, leading to greater resistance to these diseases.

Natural selection is an ongoing process that continues to shape human evolution. As humans continue to adapt to changing environments, new traits and characteristics will emerge, leading to further diversification of the species.

Learn more about Natural Selection here:

https://brainly.com/question/30261751

#SPJ11

Answer: First, we'll look at several types of evidence (including physical and molecular features, geographical ... It's unlikely that such similar structures would have evolved independently in each species

Explanation:yo ayeeeeeeeeeeeee

Answer:

Just like in humans animals like monkeys for example share DNA. They evolve over time for whatever reason to survive. Think about bears and the similarities and differences based on where they live or animals being able to eat certain things they wouldn't have been able to before, because that plant life is now extinct.

The event that initiates the contraction cycle is the arrival of calcium ions within the zone of overlap. When calcium ions bind to troponin, the troponin-tropomyosin complex undergoes a conformational change, exposing the binding site on actin. This allows myosin heads to bind to actin, forming cross-bridges.

The myosin heads then pivot toward the M line, pulling the actin filaments toward the center of the sarcomere. During this process, the free myosin head splits ATP into ADP and Pi, providing the energy needed for muscle contraction. Overall, the initiation of the contraction cycle involves a complex series of events that ultimately lead to the sliding of actin and myosin filaments.

The event that initiates the contraction cycle is C. Calcium ions arrive within the zone of overlap. This event triggers the process of muscle contraction, which involves a series of steps such as cross-bridge formation, myosin head pivoting, and ATP splitting. Calcium ions play a crucial role in activating the muscle proteins required for contraction, ultimately leading to muscle movement.

To know more about Myosin visit-

https://brainly.com/question/14988876

#SPJ11

The event that initiates the contraction cycle is the arrival of calcium ions within the zone of overlap. This triggers the movement of tropomyosin, exposing the binding sites on actin. Myosin heads then bind to the actin, forming cross-bridges.

The free myosin head splits ATP into ADP, providing the energy for the myosin heads to pivot towards the M line, causing the actin filaments to slide towards the center of the sarcomere. This process continues as long as calcium ions remain within the zone of overlap and ATP is available. In summary, the contraction cycle is initiated by the arrival of calcium ions within the zone of overlap.
The event that initiates the contraction cycle is C. Calcium ions arriving within the zone of overlap. When an action potential reaches the muscle cell, it triggers the release of calcium ions from the sarcoplasmic reticulum. These calcium ions then bind to troponin, causing a conformational change that moves tropomyosin, thus exposing the binding sites for myosin on the actin filaments. This allows the myosin heads to form cross-bridges with actin, and the subsequent steps in the contraction cycle, such as pivoting toward the M line and ATP splitting, can occur. This process ultimately leads to muscle contraction.

To know more about Cross-bridges visit-

https://brainly.com/question/7031861

#SPJ11

Answer:

Tree frogs use plants as protection. Golden jackals, once they have been expelled from a pack, will trail a tiger to feed on the remains of its kills. Goby fish live on other sea animals, changing color to blend in with the host, thus gaining protection from predators.

Explanation:

Answer:

Since sexual reproduction needs two individual animals for it to occur and genes from both, the offspring won’t be exactly like one or the other parent, so, on a larger scale, we will all be unique and diverse.

For further understanding, let’s think of an example. Your dad and mom are different than you are because you are created from both of their genes combined, creating a unique you. This promotes diversity for that we are all unique.

I hope this helps! :)

Answer:

oil

coal

natural gas are the fossil fuels

Answer:

a boiling-water reactor or a pressurized-water reactor.

Explanation:

Reactants for photosynthesis: Carbon Dioxide + Water + Light 

Reactants for cellular respiration: Glucose + Oxygen

Products for photosynthesis: Glucose + Oxygen

Products for cellular respiration:  Carbon Dioxide + Water + Light

6CO₂ + 6H₂O + light → C₆H₁₂O₆ + 6O₂

C₆H₁₂O₆+ 6O₂ → 6CO₂ + 6H₂O + ≅38 ATP

Learn more about the Photosysnthesis with the help of the given link:

https://brainly.com/question/1757345

#SPJ13

Cruz made an error in picking his first step. Therefore, option B is correct.

Aaron's step: Multiplying both sides by 7/4. This step is valid because multiplying both sides of an equation by the same non-zero value does not change equality.

Blaine's step: Using the distributive property to multiply 4/7 by both 7 and -n. This step is also valid because it correctly applies the distributive property to the expression.

Cruz's step: Dividing both sides by 4/7. This step is incorrect because dividing both sides of an equation by a non-zero value does not preserve equality. To solve for 'n', Cruz should have multiplied both sides by 7 - n instead.

Learn more about errors, here:

https://brainly.com/question/30524252

#SPJ1

Answer:

yo

Explanation:

its D

or

All three chose a valid first step toward solving the equation.

EASY

There are three types of experiments you need to know:

Lab Experiment. Lab Experiment. A laboratory experiment is an experiment conducted under highly controlled conditions (not necessarily a laboratory), where accurate measurements are possible. ...

Field Experiment. Field Experiment. ...

Natural Experiment. Natural Experiment.

explain more and then I can answer

The term pertaining to the passage of a sheath through the meninges and into the subarachnoid space is "spinal or lumbar puncture."

A spinal or lumbar puncture is a medical procedure in which a needle is inserted through the meninges in the lower back, specifically in the lumbar region, to access the subarachnoid space. This procedure is commonly performed for diagnostic and therapeutic purposes, such as collecting cerebrospinal fluid (CSF) samples, injecting medications, or measuring pressure within the spinal canal.

During a spinal or lumbar puncture, the patient typically lies on their side or sits hunched forward while a healthcare professional inserts a needle between the vertebrae into the subarachnoid space. The needle is carefully advanced until it reaches the desired location, and then CSF can be collected or medications can be administered. The procedure requires a sterile technique to minimize the risk of infection.

Spinal or lumbar punctures are commonly used to diagnose and manage various neurological conditions, such as meningitis, multiple sclerosis, and certain types of headaches. They can provide valuable information about the composition and pressure of the CSF, helping healthcare providers make accurate diagnoses and guide appropriate treatments.

Learn more about lumbar puncture here

https://brainly.com/question/15347691

#SPJ11

Answer:

yes it still can flow through i hope that helped you

Explanation:

Answer:

Yes

Explanation:

Answer:

60; 40

Explanation:

According to fmr.org, 40% of Minnesota's water is polluted.

100-40=60

Answer: When a plant is exposed to light, photons of appropriate wavelength will strike and be absorbed by the pigment-protein complexes arrayed on the thylakoid membranes. When this happens, the energy of the photon is transferred to the pigment molecule, thus causing the pigment to go into an electronically excited state. :)

Explanation:

Plants have a special pigment called chlorophyll present in the chloroplast of the leaves. This pigment helps to trap the photon of light energy and convert it into chemical energy during the process of photosynthesis.

Chlorophyll is a green-colored pigment present in the leaves of plants and helps in the process of photosynthesis.

When a plant is exposed to sunlight, photons of needed wavelength strike and are absorbed by the pigment chlorophyll on the thylakoid membranes.

When this happens, the energy of the photon is transferred to the chlorophyll and causing the pigment to go into an electronically excited state.

This light energy is then converted into chemical energy which drives photosynthesis.

Thus, the absorption of a photon is done by chlorophyll pigment.

For more details regarding chlorophyll, visit:

https://brainly.com/question/13500580

#SPJ2

During the Cretaceous period, high temperatures and abundant vegetation resulted in increased \(CO_2\) levels, leading to the accumulation of organic matter and the formation of good source rocks for oil and gas.

During the Cretaceous period, spanning from approximately 145 to 66 million years ago, the global carbon-climate cycle played a crucial role in the development of favorable conditions for the formation of good source rocks. The period was characterized by high global temperatures and abundant vegetation, resulting in increased carbon dioxide \((CO_2)\) levels in the atmosphere.

The elevated \(CO_2\) levels fueled vigorous photosynthesis, leading to the accumulation of organic matter in marine and terrestrial ecosystems. As this organic matter was buried and subjected to heat and pressure over millions of years, it transformed into oil and gas, creating potential source rocks. The warm climate and prolific vegetation during the Cretaceous, along with the subsequent geological processes, contributed to the formation of the rich hydrocarbon reserves that are vital to our energy resources today.

To learn more about Cretaceous follow the link:

https://brainly.com/question/2093019

#SPJ4

The correct question is:

Explain the global carbon-climate cycle during the Cretaceous period. (Write only one paragraph describing what happened during the Cretaceous geological period in order to have good source rocks.)

The kinetic energy of the particle is approximately 26.18 gigajoules (GJ).

How to find the kinetic energy of the particle?

To convert the length of the particle from millimetres (mm) to meters (m), we divide by 1000:

Length of particle = 1000 mm / 1000 = 1 m

The velocity of the particle is given as 10,000 m/s.

We can use the equation for kinetic energy (KE) to calculate the energy of the particle:

\(KE = 1/2 * m * v^2\)

where m is the particle's mass and v is its velocity.

To calculate the mass of the particle, we need to know its density. Let's assume it has a density of \(1 g/cm^3.\)

The volume of the particle is:

\(V = (4/3) * pi * r^3\)

where r is the radius of the particle. We know the length of the particle is 1 m, so the radius is:

r = 1/2 = 0.5 m

Substituting the value of the radius into the equation for the volume:

\(V = (4/3) * pi * (0.5)^3 = 0.5236 m^3\)

The mass of the particle is:

m = density * volume\(= 1 g/cm^3 * 1000 kg/m^3 * 0.5236 m^3 = 523.6 kg\)

Substituting the values of mass and velocity into the equation for kinetic energy:

\(KE = 1/2 * m * v^2 = 1/2 * 523.6 kg * (10,000 m/s)^2 = 26.18 GJ\)

Therefore, the kinetic energy of the particle is approximately 26.18 gigajoules (GJ).

To learn more about kinetic energy, visit:

https://brainly.com/question/30910516

#SPJ1

Answer:

B. These places once had a warmer climate.

Explanation:

They're fossils meaning they're extremely old therefore the climate they once grew in was suitable for its needs until the climate changed causing them to die.

Answer:

Ecosystem

Explanation:

Ecosystem is the amount of variation shown by organisms in an ecosystem.

Answer: Energy can be passed up to the rest of the pyramid from plants. Producers are living things that are able to make their own food. Most of them use the sun's light to make their food.

Explanation:

Now if you are all the way at the top, what's at the bottom of this pyramid?  In order for it to stand, it has to have a strong base.  So at the very bottom, we have the living things that can hold themselves up on their own with nothing beneath them.  These are plants that are able to make their own energy from sun, gas, and water.  They do not need much help from other living things.  Energy can be passed up to the rest of the pyramid from plants.

Producers are living things that are able to make their own food.  Most of them use the sun's light to make their food.  They use most of the food they make to grow and stay alive, then store the rest in their bodies.  Have you ever pulled a carrot up out of the ground?  The orange part is the plant's stored energy.  This is a great way to grow and still keep some energy for later.  That is, of course, until a hungry rabbit hops along.

Answer:

Cystic fibrosis is a recessive genetic disorder that affects the mucus-producing glands, digestive enzymes, and sweat glands

Answer:

There are 20 amino acids that make up proteins and all have the same basic structure, differing only in the R-group or side chain they have. The simplest, and smallest, amino acid is glycine for which the R-group is a hydrogen (H).