A tropical rainforest may be unable to return to its original climax community after which of the following disturbances?

A. burning of a forest fire
B. clearing and farming
C. volcanic eruption
D. flooding after a hurricane

The answer is passive transport does not require energy and moves materials from areas of relatively higher to lower concentration.

Passive transport is a movement of ions and other atomic or molecular substances across cell membranes without need of energy input. Unlike active transport, it does not require an input of cellular energy because it is instead driven by the tendency of the system to grow in entropy.

The passive transport does not need energy and transport materials from areas of relatively higher to lower concentration. Thus, the correct option is C.

Passive transport is defined as a movement of ions and other atomic or molecular substances across cell membranes without energy input. Passive transport based on the second law of thermodynamics.

Unlike active transport, it does not need an input of cellular energy because it is instead driven by the tendency of the system in the cell to grow in entropy.

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The carbon cycle is a natural and integral part of life on Earth. A single carbon atom stored in a blade of grass may shift to the body of an animal that eats the grass.

Hemoglobin consists of protein subunits and these proteins are folded chains of a large number of different amino acids called polypeptides. The amino acid sequence of any polypeptide created by a cell is determined by the genes.

Amino acids are combine to make up the protein portion of hemoglobin. Thus option B is correct.

It is a proteinaceous substance composed up amino acids. It is present in red blood cells (RBCs) and play a vital role

Each of these chains of Hemoglobin consist up one iron containing heme ring. The role of heme is to transport oxygen in to blood stream.

The function of hemoglobin  include give a donut shape to RBC,  binds and transports oxygen from the lungs to the tissues in the body and also transports carbon dioxide from tissues to the lungs.

It also carry nitric oxide and carbon monoxide and transport it.

Hence, option B is correct.

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Your question was incomplete. So the probable question was

Which type of molecules combine to make up the protein portion of hemoglobin?

A. fatty acids

B. amino acids

C. monosaccharides

D. polysaccharides

it means you have one atom of each element in the formula

Answer:

When a compound chemical formula does not include any number it means that compound has only one atom of the elements the compound is made up of.

For example, HCN is a compound made up of one atom of hydrogen, carbon, and nitrogen so it does not contain any number in its chemical formula.

The number present in front of any chemical formula of a compound signifies that there are that many molecules of the element is present in the compound. For example, 3O₂ contains 3 molecules of oxygen not 3 atoms of oxygen.

Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge. Seafloor spreading helps explain continental drift in the theory of plate tectonics.

Denser materials sank to the earths center and less dense materials were forced to the outer layers, forming a thin crust. Atmosphere: Less dense molecules rose to the surface. Oceans: As earth cooled, water vapor condensed to form rain which lead to the formation of oceans.

Answer:

1.5 billion years ago

Explanation:

Protists are a collection formed up of protozoa, unicellular algae, and fungus forms. We will focus on the being part of this society: the protozoa (proto = first, zoa = beings). Protozoa are the earliest discovered collection of heterotrophic living that utilize and modify complicated meal particles into power. Although protozoans are only made up of a single cell, these organisms control to perform all the necessary responsibilities of life.  The protozoa are split into four principal associations: the ciliates, the flagellates, the heliozoans, and the amoebas.

Answer:

Option (C)

Explanation:

Protists are the kingdom that includes unicellular organisms. These organisms are eukaryotic in nature which means that it has a well-defined nucleus. They may be present in colonies or biofilm. But they re self-sufficient. Since the time of formation of these organisms, they have constantly undergone evolution forming a more complex type of organisms.  

The first protists appeared during the proterozoic age at about 1.8-1.5 billion years back.

Hence the most appropriate answer is 1.5 billion years ago i.e option (C)

The answer is C. A catalyst speeds up the rate of a chemical reaction. However, it is not consumed during the course of the day.

If there weren't  secondary consumers, then the primary consumers population would increase. Also,  plant life would be threatened, which would cause increased difficulty for primary consumers to survive after they overpopulate.So the population increases in producer (and probably producer diversity) and decreases in secondary, tertiary and higher order consumer populations.

question answered by

(jacemorris04)

There would be a lot of herbivores. Also their would be a lack of vegetation eventually in their area because the secondary consumers will not eat most of the primary consumers like deer and squirrels which in turn will eat all of the vegetation.  This would conclude that the herbivores would eventually die do to starvation, that is why the meat eaters are needed in a ecosystem.

Hope this helps just took this quiz today and got a 4/4 on my answer so hopefully this will help you guys.

Cheers!

The first stage is called glycolysis and does not require oxygen. In this stage, ATP molecules are used to help break down glucose into a substance called pyruvate, a molecule that transports electrons called NADH, two more ATP molecules, and carbon dioxide. ... The final stage is called electron transport phosphorylation.

Final answer:

While glycolysis does not require oxygen, oxygen is critical in the steps that follow. It serves as an 'electron magnet' in the electron transport chain and helps regenerate NAD+ from NADH, thereby enabling the continuation of cellular respiration and the production of a significant amount of ATP.

Explanation:

Glycolysis is an anaerobic process and does not require oxygen to proceed. However, oxygen plays a critical role in the later steps of cellular respiration, where the NADH produced in glycolysis can be oxidized. In the presence of oxygen, this process is efficient and leads to the production of much more ATP than glycolysis alone. The oxygen acts as an 'electron magnet' in the electron transport chain, helping to drive electron flow, which is crucial for ATP synthesis. It also regenerates NAD+ from NADH, which is essential for both glycolysis and the citric acid cycle to continue.

eukemias that are caused by a mutation called Philadelphia chromosome are CML and Philadelphia chromosome-positive ALL. The mutation is a translocation, identified as, t(9;22)(q34;q11). This abnormal chromosome contains a fusion gene, consisting of the ABL gene and the BCR gene, producing the BCR-ABL oncogene.

Final answer:

Damian's plant reproduced through vegetative propagation, an asexual reproduction method that allows a new plant to grow from a fragment of the parent plant, ensuring that it is genetically identical to the parent.

Explanation:

Damian grew a plant from a leaf cutting. This method of reproduction is known as vegetative propagation, which is a form of asexual reproduction. In this process, a new plant grows from a fragment of the parent plant, such as a leaf, stem, or root, without the involvement of sexual reproduction. The new plant is genetically identical to the parent plant, and this can be a natural or artificial method. Examples of natural vegetative propagation include the growth of plants like ginger, sweet potato, and kalanchoe, which can reproduce from parts such as buds on the stem or leaves. In contrast, artificial vegetative propagation includes methods like cutting, grafting, and layering, often used by gardeners and horticulturists to propagate plants.

Not even understanding the question tbh

Answer:

A. Archaea lack peptidoglycan

Explanation:

Mark my Answer as the Brainliest!

HOPE MY ANSWER HELPED YOU!!!

Answer:

A. Archaea lack peptidoglycan

Explanation:

Phosphorus runoff from farming practices into water bodies such as oceans and lakes can result in harmful eutrophication. This excess nutrient can encourage the rapid growth of algae which, when they decompose, deprive the water of oxygen. This can be harmful or lethal to aquatic species, disrupting the ecosystem.

Phosphorus runoff from farming practices can negatively affect the ecosystem of bodies of water, such as oceans and lakes. When excessive phosphorus enters these water bodies, it can cause a process known as eutrophication. Eutrophication refers to the enrichment of a water body with nutrients, which encourages the rapid growth of algae, also called algal blooms. As these algal blooms die off, they are decomposed by microorganisms that use up oxygen in the water. This depletion of oxygen can be harmful, if not deadly, to fish and other aquatic species and therefore disrupts the balance of the ecosystem.

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Red blood cells play a huge part in the human body

Red blood cells transport oxygen throughout the body

They are able to carry oxygen because of an important protein called haemoglobin.

Not only does haemoglobin carry oxygen, but it's also responsible for the red color of our blood.  

If red blood cells didn't contain haemoglobin the cells wouldn't be able to do their job properly. If this happens we would slowly die

The role that red blood cells play in the human body is that they transport oxygen throughout the body.

Red blood cells, also known as erythrocytes, are the most abundant cell type in the blood. Their primary function is to carry oxygen from the lungs to the body's tissues and return carbon dioxide from the tissues back to the lungs to be exhaled. This oxygen transport is facilitated by haemoglobin, a protein within red blood cells that binds to oxygen.

While red blood cells are not directly involved in protecting against injury or disease-carrying microorganisms, they do contribute to the body's overall health by ensuring that tissues receive the oxygen they need to function properly. Additionally, red blood cells are not primarily involved in blood clotting; that process is mediated by platelets and a cascade of clotting factors.

The complete question is-

What role do red blood cells play in the human body?

They protect against injury.

They protect against disease-carrying microorganisms.

They transport oxygen throughout the body.

They aid in blood clotting.

We need to protect our oceans from pollution because it harms marine ecosystems, affects human health and livelihood, and contributes to climate change.

Climate change exacerbates other ocean problems, such as coral bleaching, which affects the rich biodiversity within coral reefs, important nutrients for marine life, and the provision of protein for millions of people. Furthermore, coral reefs serve as natural barriers against disasters like tsunamis, and they greatly contribute to tourism.

Ocean water pollution illustrates that despite their vastness, oceans are highly susceptible to pollution. Trash, including plastics, not only contaminates coasts but can also create hazards for marine animals, leading to entanglement or ingestion of inedible materials. Oil spills, like the incident in the Gulf of Mexico in 2010, can devastate marine species and destroy coastal habitats.

Human activities, driven by our standard of living and neglect of coastal pollution controls, also play a significant role. Runoff from land carries pollution to the sea, compounded by direct waste disposal into coastal waters in certain regions. Plastic pollution is a challenge that could be mitigated by banning single-use plastics and improving recycling programs

Color diversity within a butterfly species affects its survival and evolution, allowing for natural and diversifying selection that can influence the population's genetic variance. Studies, such as those on yellow buntings' responses and the dependence of Karner blue butterflies on wild lupine, illustrate how color variation can impact ecological dynamics and conservation.

Color diversity within a butterfly species can have significant effects on the population's survival and evolution. In a hypothetical scenario, where butterflies exhibit varying colors, these colors may play a role in the butterflies' ability to avoid predators, seek mates, or exploit different ecological niches. For example, in the case of yellow buntings showing fleeing behavior from butterflies with eyespots, the data could suggest that these butterflies have developed a defensive trait that can influence natural selection. Predators avoiding butterflies with eyespots may lead to an increased frequency of this trait within the butterfly population.

This selective pressure could cause a shift in the population's genetic variance, favoring butterflies with eyespots. Likewise, diversifying selection might occur if different colors confer advantages in different environments (e.g., light-colored butterflies in sandy areas and dark-colored ones in dark forests). Counting and observing the impact of color diversity on a specific butterfly population, such as the federally endangered Karner blue butterfly, can inform conservation efforts and aid in understanding ecological dynamics.

Additionally, human activities such as the selective capture of colorful fish, or pollution altering habitats, can induce artificial selection or environmental changes that rapidly shift the phenotype distribution in animal populations. The key to a species' long-term survival could heavily rely on the biodiversity reflected in color variations amidst different environmental pressures.

Answer:

genus and species

Explanation:

i took test just yesterday

Hey lassie. Here is your answer for this question.

The genetic material is replicated in S phase. It will grow again in the G2 and then go into meiosis.

So your answer is B. The cell is undergoing meiosis and will cross over the genetic material next.

Hope this helps!

Answer: B. The cell is undergoing meiosis and will cross over the genetic material next.

Good luck!!!!! ☺☺☺

i cannot see the diagram but you mentioned medels law so it is for a fact -(segregation)-

The diagram represents one of Mendel’s laws or principles of inheritance. Which law or principle does the diagram represent?

Answer:

segregation

They are both Homo Sapiens, so we know that their amino acid sequence will be the same making the DNA of both individuals very similar. According to studies, our DNA's are 99,4% - 99,9% similar, having only a 0,1% - 0,6% variation between two human individuals.

Hope it helped,

BioTeacher101

" Annika and Pedro share approximately 99.9% of their DNA.

Humans share a vast majority of their DNA with one another, regardless of their cultural or geographical differences. On average, any two humans will have DNA that is 99.9% identical. This means that Annika and Pedro, as two individuals selected at random from the human population, would also share about 99.9% of their DNA.

The 0.1% difference in DNA accounts for the unique characteristics that make each person distinct, such as hair color, eye color, height, and other physical traits, as well as susceptibility to certain diseases. This variation is due to differences in the DNA sequence known as single nucleotide polymorphisms (SNPs), insertions, deletions, and copy number variations.

It's important to note that while the average genetic similarity between humans is 99.9%, this does not mean that any two individuals are exactly 99.9% similar. There is a small range of variability around this average. However, for the purpose of understanding the genetic similarity between Annika and Pedro, or any two unrelated individuals, the figure of 99.9% is a useful and accurate estimate.

In summary, the genetic similarity between Annika and Pedro is reflective of the genetic similarity shared by all humans, which is approximately 99.9%. This high degree of similarity is a testament to the shared ancestry and close relatedness of all people within the human species."

carbon dioxide

Explanation:

i took the same test

The first one is 2

The second one is 1

The third one is 2

The fourth one is 3

The last one is 1

They're all common in the fact that they have to eat others that have energy, because they in themselves cannot produce their own energy. All animals are multicellular.

A common feature of all organisms in the animal kingdom is that they are multicellular. This means that they are composed of multiple cells that work together to perform various functions and support the organism's life processes.

Unlike single-celled organisms such as bacteria and protists, animals are made up of specialized cells organized into tissues, organs, and organ systems, allowing them to exhibit a wide range of complex behaviors and functions. Animals are composed of multiple cells that work together to form tissues, organs, and organ systems. Multicellularity allows animals to exhibit a higher level of complexity and specialization, enabling them to perform various functions essential for survival and reproduction.

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microbiology is the study of microorganism like viruses, bacteria and another microbes that are invisible for the human naked eye.  

Its the study of microorganisms, which are the smallest living organims, most of them being unicellular.

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BioTeacher101

Since domestic cats reproduce through meiosis, each parent gives off half of their genetic code (or DNA) to their offspring. The answer would be B, 19 chromosomes because that is half of 38. That is why when a parent gives birth to their child, they don't look exactly the same or act exactly the same as either of their parents. They are a mix of both, which is another explanation for why no two people look exactly alike.

You may wonder, a domestic cat births more than one offspring at a time. If multiple offspring share the same parents, why don't they look the same? The reason for that is because the half DNA that the parent is giving off is a different half than they gave to another offspring, if that makes any sense.

Hope that helped you! :)

Scientists use a variety of methods, including physical evidence analysis, eyewitness accounts, the principle of inference, and statistical analysis, to determine facts such as the presence of a second victim.

In science, evidence takes center stage in determining facts and conclusions. In regard to determining the presence of a second victim, scientists used a combination of methods. These include analyzing physical evidence, such as marks left on the site of incident, physical remains, or technological instruments used to track physical changes or emittances. In situations related to crime, DNA analysis can serve as an example of such method. Eyewitness accounts, as unreliable as they may be, also contribute evidence. Just as Donald Thomson was falsely identified as the perpetrator due to the victim's confusion between him and the real criminal she saw on television, valid identifications can narrow down possibilities as well.

Another significant method involves the principle of inference. Scientists consider each piece of evidence and draw conclusions based on them, just as was done in the quark hypothesis. Even if these conclusions are not definitive, they provide a launchpad for further investigations and can be revised as techniques become more reliable. Statistics are also of great importance. Through statistical analysis, patterns can be identified, and factors overlooked before can become clear, sometimes altering conclusions radically.

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78 seconds is most likely an outlier.

This is because 66, 68, and 70 seconds are all within 2 seconds apart from each other. Whereas 78 seconds is 8 seconds more than 70 seconds making it an outlier.

Answer:

78s

Explanation:

got 100 on edge