what type of organism uses photosynthesis ​

Answer:

power plant? ( sorry if it wrong)

Answer:

Explanation:

Chemical thesis something like that

Answer:

B

Explanation:

I took the test:)

The sharp thorns are present in the acacia plant as an adaptation for defense.

The correct option is option C.

The acacia plants has some very useful behavioral as well as physical adaptations in order to discourage animals from eating the leaves. The plant has adapted to developed long as well as sharp thorns to defend itself.

It also shows a symbiotic relationship with the stinging ants. These stinging ants basically live inside the thorns of the acacia plant which they have hollowed out. They defend the plant and in return they feed on the nectar which is produced by the plant.

Hence, the correct option is C.

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The form correct pairs can be matched with the parts of fruits as;

The epicarp, which is the outermost layer, the mesocarp, which is the middle layer, and the endocarp, which is the inner layer enclosing the ovaries or the seeds, are the three separate layers that make up the pericarp in fleshy fruits.

The fruit's exterior surface is made up of the exocarp, the fruit's top layer. The tissue between the exocarp and endocarp is called the mesocarp. The innermost layer, called the endocarp, is situated just outside the seed coat.

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Answer:

EM waves do not require a medium to propagate. They can travel through a vacuum, such as the empty space between stars or in outer space. This is in contrast to mechanical waves, such as sound waves, which require a medium through which to propagate.

This pattern can be explained by the action of  Option 1: Memory cells that trigger a secondary immune response.

When a person is infected with a virus for the first time, their immune system must mount a primary response to fight off the infection. This response takes time to develop, and the person may experience more severe symptoms as their body tries to eliminate the virus. However, after the infection is resolved, the immune system retains memory cells specific to that virus. If the person is infected with the same virus again, these memory cells can quickly recognize and respond to the virus, triggering a secondary immune response. This secondary response is much faster and more efficient than the primary response, allowing the person to fight off the infection before it can cause serious harm. Therefore, subsequent infections of the same virus often produce only mild symptoms or go unnoticed.

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Electrophoresis is a technique commonly used in the lab to separate charged molecules, like DNA, according to size.

Gel electrophoresis is a technique commonly used in laboratories to separate charged molecules like DNA?, RNA? and proteins? according to their size.

Charged molecules move through a gel when an electric current is passed across it.

An electric current is applied across the gel so that one end of the gel has a positive charge and the other end has a negative charge.

The movement of charged molecules is called migration. Molecules migrate towards the opposite charge. A molecule with a negative charge will therefore be pulled towards the positive end (opposites attract!).

The gel consists of a permeable matrix, a bit like a sieve, through which molecules can travel when an electric current is passed across it.

Smaller molecules migrate through the gel more quickly and therefore travel further than larger fragments that migrate more slowly and therefore will travel a shorter distance. As a result the molecules are separated by size.

Gel electrophoresis and DNA

Electrophoresis enables you to distinguish DNA fragments of different lengths.

DNA is negatively charged, therefore, when an electric current is applied to the gel, DNA will migrate towards the positively charged electrode.

Shorter strands of DNA move more quickly through the gel than longer strands resulting in the fragments being arranged in order of size.

The use of dyes, fluorescent? tags or radioactive? labels enables the DNA on the gel to be seen after they have been separated. They will appear as bands on the gel.

A DNA marker with fragments of known lengths is usually run through the gel at the same time as the samples.

By comparing the bands of the DNA samples with those from the DNA marker, you can work out the approximate length of the DNA fragments in the samples.

How is gel electrophoresis carried out?

Preparing the gel

Agarose gels? are typically used to visualise fragments of DNA. The concentration of agarose used to make the gel depends on the size of the DNA fragments you are working with.

The higher the agarose concentration, the denser the matrix and vice versa. Smaller fragments of DNA are separated on higher concentrations of agarose whilst larger molecules require a lower concentration of agarose.

To make a gel, agarose powder is mixed with an electrophoresis buffer and heated to a high temperature until all of the agarose powder has melted.

The molten gel is then poured into a gel casting tray and a “comb” is placed at one end to make wells for the sample to be pipetted into.

Once the gel has cooled and solidified (it will now be opaque rather than clear) the comb is removed.

Many people now use pre-made gels.

The gel is then placed into an electrophoresis tank and electrophoresis buffer is poured into the tank until the surface of the gel is covered. The buffer conducts the electric current. The type of buffer used depends on the approximate size of the DNA fragments in the sample.

Preparing the DNA for electrophoresis

A dye is added to the sample of DNA prior to electrophoresis to increase the viscosity of the sample which will prevent it from floating out of the wells and so that the migration of the sample through the gel can be seen.

A DNA marker (also known as a size standard or a DNA ladder) is loaded into the first well of the gel. The fragments in the marker are of a known length so can be used to help approximate the size of the fragments in the samples.

The prepared DNA samples are then pipetted into the remaining wells of the gel.

When this is done the lid is placed on the electrophoresis tank making sure that the orientation of the gel and positive and negative electrodes is correct (we want the DNA to migrate across the gel to the positive end).

Separating the fragments

The electrical current is then turned on so that the negatively charged DNA moves through the gel towards the positive side of the gel.

Shorter lengths of DNA move faster than longer lengths so move further in the time the current is run.

The distance the DNA has migrated in the gel can be judged visually by monitoring the migration of the loading buffer dye.

The electrical current is left on long enough to ensure that the DNA fragments move far enough across the gel to separate them, but not so long that they run off the end of the gel.

Illustration of DNA electrophoresis equipment used to separate DNA fragments by size. A gel sits within a tank of buffer. The DNA samples are placed in wells at one end of the gel and an electrical current passed across the gel. The negatively-charged DNA moves towards the postive electrode. Image credit: Genome Research Limited

tank.

In the induced-fit model of substrate binding to enzymes, the correct statement is: "when the substrate binds, there is a conformational change in the enzyme, and the active site changes its conformation to fit the substrate.

According to this hypothesis, the interaction between the enzyme and substrate is initially only moderately strong, but as soon as the substrate hits the active site, it causes the enzyme to change shape, resulting in a closer match. The enzyme's conformational change enables the active site to better match the shape and chemical characteristics of the substrate, which speeds up the chemical process.

The induced-fit model makes no mention of the aggregation of many enzyme molecules. Additionally, the active site modifies its conformation to match the substrate rather than the substrate changing its conformation to fit the active site.

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Correct question is:

In the induced-fit model of substrate binding to enzymes: group of answer choices

there is aggregation of several enzyme molecules when the substrate binds

there is a conformational change in the enzyme when the substrate binds

the active site changes its conformation to fit the substrate

the substrate changes its conformation to fit the active siteate."

Answer:

D.) saprophytic

Explanation:

Saprophytic fungi break down dead matter by releasing enzymes. This allows for the matter to be taken up by the fungi as a food source.

Answer:

Hmm...

Explanation:

Think plants, grass, algae, etc. Base of the food chain.

\( \large{ \underline{ \bf{Primary \: Producers}}}\)

The NADPH (nicotinamide adenine dinucleotide phosphate) produced during the Pentose Phosphate Pathway (PPP) serves as a reducing agent and is involved in various metabolic processes. While it is not directly involved in the synthesis of oxaloacetate, pyruvate, acetaldehyde, or glucose, NADPH does play a crucial role in the synthesis of fatty acids.

Fatty acid synthesis occurs in the cytoplasm of cells and requires NADPH as a reducing agent for the conversion of acetyl-CoA to fatty acids. During fatty acid synthesis, acetyl-CoA is carboxylated to form malonyl-CoA, which is then elongated through a series of reactions catalyzed by enzymes called fatty acid synthases. The reduction of these fatty acid intermediates to form fatty acids requires NADPH as a source of reducing power.

To summarize, NADPH produced during the Pentose Phosphate Pathway is primarily used as the reducing power for the synthesis of fatty acids, rather than for the synthesis of oxaloacetate, pyruvate, glucose, or acetaldehyde.

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The endocrine gland that sits atop the kidneys is called the adrenal gland. The adrenal gland has two main parts: the outer cortex and the inner medulla. The innermost portion of the adrenal gland is the adrenal medulla.  The correct answer is (c)

The adrenal medulla is responsible for releasing hormones called catecholamines, which include adrenaline (epinephrine) and noradrenaline (norepinephrine). These hormones play a crucial role in the body's response to stress, known as the "fight or flight" response.

They help increase heart rate, elevate blood pressure, and mobilize energy stores to prepare the body for immediate action. These hormones are involved in regulating metabolism, blood pressure, fluid balance, and sexual development The correct answer is (c)

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Connective tissues are an appropriate name for the types of tissues found in this class because they are responsible for connecting various types of tissues to each other.

They are also responsible for providing structural support to the body and protecting vital organs.

Some examples of connective tissues include bone, cartilage, adipose tissue, blood, and lymphatic tissue.

Connective tissues are the most abundant and diverse type of tissue found in the human body.

They are characterized by their ability to connect and support different types of tissues and organs.

They are made up of a network of cells and fibers that work together to provide strength, elasticity, and flexibility to the body.

Connective tissues are also responsible for producing and secreting various substances such as collagen, elastin, and glycosaminoglycans. These substances play an essential role in maintaining the structure and function of the body's organs and tissues.

Connective tissues are a vital component of the body's overall structure and function.

They play a crucial role in maintaining the body's physical integrity, providing support and protection to the organs, and ensuring that the various tissues of the body are connected and working together properly.

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Answer:

Explanation:

i tack test

The answer is B. Non-toxic proteins purified from rabbit blood are not considered biohazards.

Biohazards refer to biological substances that have the potential to harm living organisms, including humans.

They can be infectious agents, biological toxins, or invasive organisms.

In this case, non-toxic proteins purified from rabbit blood do not pose a threat to human health or the environment.

These proteins are derived from a non-infectious source (rabbit blood) and do not have inherent toxic properties.

Therefore, they are not considered biohazards.

It is important to properly handle and dispose of biohazardous materials to prevent the spread of infectious diseases and ensure safety in laboratory or healthcare settings.

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Answer:

Saliva

Lipase

Amylase

Trysin

Pepsin

Erepsin

Explanation:

Substances? Just any substances?

Answer: Support the weight of your body and help you move.

Explanation:

Answer:

move, be still

Explanation:

not sure if your looking for something more in depth but this is the basics

Biological Agent: Mold

Chemical Agent: Cleaning Disinfectants

Mold is a biological agent that I may have come into contact with at home, school, or work in recent weeks. Mold is a type of fungus that thrives in damp and humid environments. It can grow on various surfaces such as walls, ceilings, carpets, and even food. Mold spreads through tiny spores that are released into the air and can be inhaled or come into contact with the skin.

In homes, mold can be found in areas with water leaks, high moisture levels, or poor ventilation. It can cause respiratory issues, allergies, or aggravate existing respiratory conditions. However, molds also play an essential role in nature by breaking down organic matter and aiding in the decomposition process.

Cleaning disinfectants are chemical agents that I may have come into contact with at home, school, or work in recent weeks. These disinfectants are used to kill germs, bacteria, and viruses on various surfaces. Commonly used disinfectants include alcohol-based solutions, hydrogen peroxide, quaternary ammonium compounds, and chlorine-based products. They can be applied on surfaces, objects, or even used as hand sanitizers.

Cleaning disinfectants help in preventing the spread of infectious diseases and maintaining hygiene. They are particularly important in healthcare settings, schools, and public places to reduce the risk of infections. However, it's important to use disinfectants according to instructions, ensuring proper ventilation and avoiding excessive exposure, as some disinfectants can be harmful if misused or used in high concentrations.

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The complete question is:

Choose one biological and one chemical agent that you have come

into contact with at home, school or work in recent weeks. Consider

and describe the source and path of each agent and its potential

important uses.

Water-soluble proteins such as myoglobin tend to fold in a way that of option a) hydrophobic amino acid R-groups are on the interior of the protein, and hydrophilic groups are on the outside.

This is because water is a polar molecule and interacts well with hydrophilic groups. Hydrophobic amino acids are non-polar and tend to clump together in the interior of the protein to avoid contact with water. This folding arrangement creates a stable structure for the protein, which is necessary for its function.

In contrast, if hydrophilic amino acid R-groups were on the interior of the protein and hydrophobic groups on the outside, the protein would not be stable in water. This is because the hydrophilic groups would interact with water, causing the protein to unfold and denature.

It is also important to note that not all peptides form hydrogen bonds with water. Hydrogen bonds are formed between water molecules and polar groups on the protein, such as amino and carboxyl groups. Hydrophobic groups do not form hydrogen bonds with water.

In summary, the folding of water-soluble proteins such as myoglobin is crucial to their stability and function. Hydrophobic amino acids tend to be on the interior of the protein, while hydrophilic groups are on the outside to interact with water and stabilize the protein structure.

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Tropical Rain Forest is the biome that include ferns, large woody vines, monkeys, sloths, and boa constrictors.

Tropical rainforests are the rainforests that occur in the regions of tropical rainforest climate where there is no dry season. Due to such type of climate, there is greater amount of biodiversity.

So we can conclude that Tropical Rain Forest is the biome that include ferns, large woody vines, monkeys, sloths, and boa constrictors.

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Answer:

option A is correct answer hope it helps

A cladogram is a diagram that depicts evolutionary connections between various organisms by showing how they diverged from their common ancestor over time. In this context, interpreting cladograms can help determine which organisms evolved from a common ancestor like Pakicetus. The answer to the question, which organisms evolved from the common ancestor Pakicetus, is whales and hippos.The question asks which organisms evolved from the common ancestor Pakicetus.

Cladograms generally indicate how different groups of organisms are related, based on the similarities and differences between them. Pakicetus is an ancestor of cetaceans, which includes whales and dolphins. Based on the evolutionary relationships shown on a cladogram, we can see that the hippos are the closest living relatives of cetaceans. Therefore, we can infer that whales and hippos evolved from the common ancestor Pakicetus. Hence, the correct answer to the question is "whales and hippos."

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Answer:

What is better, waffles or cake?

Explanation:

It cant be answered by doing an experiment. Its purely based around opinions.

Answer:

Living things must be capable of transporting nutrients, wastes and gases to and from cells. ... Multicellular organisms have developed transport and circulatory systems to deliver oxygen and food to cells and remove carbon dioxide and metabolic wastes.

Answer:

that my answer thank you

B. Prediction of weather. Science  technology are used to predict atmospheric conditions at a certain area and time. Computer-based models that take into consideration a variety of atmospheric elements.

Quantitative data on the condition of the atmosphere, land, and ocean at a particular site are collected in order to make weather predictions, which then use meteorology to anticipate how the atmosphere will change there.

Forecasts were previously made manually using a combination of factors, including changes in barometric pressure, the current state of the weather, and the state of the sky or cloud cover.

Still requiring human input, selecting the best model to serve as the forecast's underlying framework involves understanding of model bias, model performance, and pattern identification.

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The active site of an enzyme is the specific region where the substrate binds, and where the catalysis occurs.

An enzyme is a biomolecule responsible for the acceleration of chemical reactions. The enzyme works on a substrate, which is a molecule upon which an enzyme acts.

The active site of an enzyme is the specific region where the substrate binds, and where the catalysis occurs. The active site is created when the enzyme folds into a three-dimensional structure. This site is not permanently altered by the reaction and it lasts long enough to catalyze only one reaction.

The active site is created when the enzyme folds into a three-dimensional structure. The site is not permanently altered by the reaction and it lasts long enough to catalyze only one reaction. The active site of an enzyme is the part that binds to the substrate.

In conclusion, the active site of an enzyme is the part that binds to the substrate.

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Colony Collapse Disorder (CCD) is a phenomenon characterized by the sudden disappearance of worker bees from beehives, leaving the queen and a few immature bees behind.

The causes of CCD are not fully understood, but prevailing hypotheses include pesticide exposure, parasites and diseases, poor nutrition, and various stress factors. These factors likely interact and contribute to the decline of honeybee populations.

Understanding CCD is crucial for implementing effective strategies to mitigate its impact, including promoting sustainable agricultural practices, reducing pesticide use, improving beekeeping management, and enhancing habitat and forage availability.

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Honeybees provide one of the most important ecosystem services: pollination - and they do this for free! We are experiencing huge losses in pollinator populations throughout the United States and the rest of the world. The decline is so great that many farmers now must import European honeybees to pollinate crops. In 2006, an emerging issue called Colony Collapse Disorder (CCD) caused massive declines in beehives. These declines are still a problem today. Respond to the following prompts in your initial post this week: 1. What is Colony Collapse Disorder and what are the prevailing hypotheses for what causes CCD?

Answer: A) Fat is to a lipid.

Explanation: