A student conducted an experiment on an unknown food to determine the presence of macromolecules. The results are as follows: Benedict’s test= blue, Iodine test= dark red, Biuret test= violet, Sudan IV= dark red. Using the indicator chart below and the information in the chart above, which macromolecules were present? Select all that apply.

a. carbohydrates

b. lipids

c. nucleic acids

d. proteins

INDICATOR
Benedicts
Iodine
Biuret
Sudan IV
NEGATIVE
TEST
blue
dark red
blue
dark red
POSITIVE
TEST
orange
black
violet,
reddish-
orange


To get into Challenge 2 you must know the monomer of the macromolecule from the correct answer.

Answer:

The Myelin Sheath allows neurons to speed up the transmission of nerve impulses.

Answer:

False, otherwise N/A

Explanation:

False because that statement is false, and N/A because if I am incorrect, the question is not applicable. Please edit your question.

Statements 1 and 3 are true, while statements 2 and 4 are false.The first energy transformation in the scenario is chemical energy to kinetic. - True.

The archer converts chemical energy stored in their muscles into kinetic energy when they release the string and propel the arrow forward.From the time the archer draws the bow until the thud is heard, entropy increases in the universe. - False. Entropy is a measure of disorder or randomness in a system. In this scenario, the archer's actions do not necessarily lead to an increase in entropy.

The energy of the arrow at the end of the scenario is equal to the energy exerted by the muscles of the archer. - False. Energy is conserved in a closed system, but some energy is lost as heat and sound during the process. Therefore, the energy of the arrow at the end may be less than the energy exerted by the archer's muscles.

When the arrow sticks into the tree, the original energy has all been used up. - False. Energy is not created or destroyed but rather transformed from one form to another. Some of the initial energy from the archer's muscles is transferred to the arrow's kinetic energy, but it is not entirely used up.In summary, statements 1 and 3 are true, while statements 2 and 4 are false.

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Answer:

Gold

Explanation:

Gold is a singular element according to the periodic table. (Labeled Au), and it does not result from chemical bonds or multiple elements, like all other items listed here do.

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Answer:

Here are four traits that would make it hard for a vaccine to be used:

1. Rapid mutation rate. If a pathogen mutates rapidly, it will be able to evade the immune system's defenses, including the antibodies produced by a vaccine. This is a particular problem with viruses, which can mutate very quickly.

2. Ability to evade the immune system. Some pathogens are able to evade the immune system by hiding inside cells or by changing their surface proteins so that they are no longer recognized by the immune system. This makes it difficult for the immune system to mount an effective response to the infection.

3. Ability to spread easily. If a pathogen is easily spread from person to person, it will be more difficult to prevent infection through vaccination. This is a particular problem with respiratory viruses, which can be spread through coughing and sneezing.

4. Lack of animal reservoirs. If a pathogen does not have animal reservoirs, it will be more difficult to develop a vaccine against it. This is because vaccines are typically developed using weakened or killed versions of the pathogen. If there are no animal reservoirs, there will be no source of the pathogen to use for vaccine development.

It is important to note that these are just a few of the traits that can make it difficult to develop a vaccine against a pathogen. There are many other factors that can contribute to the difficulty of vaccine development, such as the cost of vaccine development, the availability of funding, and the political will to support vaccine development.

Answer:

The third answer

Explanation:

................ ..

Answer:

Hey bud, I saw this was your first question. You need to attach some files to your question in order for us to see it. You can do that by using the Paperclip shaped icon on the bottom when you are making a question.

Explanation:

The following is a safety consideration when hunting wild turkey is  Use a rooster call, avoid using a hen call.

If you do see another hunter, don't move. Stay perfectly still, and either speak to the hunter in a normal voice or call out loudly if the hunter is farther out.

Make absolutely sure that the hunter knows you're there before you move. If you use camouflage, cover your entire body, contain your face.

Thus, option "A" is correct,  Use a rooster call, avoid using a hen call.

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Answer:

А Use a rooster call, avoid using a hen call 

Explanation:

I took the module exam

An air mass is primarily classified based on its temperature and humidity characteristics. The classification of air masses takes into account both temperature and humidity, as these two factors greatly influence the properties and behavior of the air mass.

Temperature: The temperature of an air mass is a key factor in its classification. Air masses are categorized as either warm or cold, depending on their temperature relative to the surrounding air.

Humidity: Humidity, which refers to the amount of moisture present in the air, is another crucial factor in classifying air masses. Air masses can be classified as either dry (low humidity) or moist (high humidity), depending on the moisture content they contain.

Location: The location of an air mass is considered in its classification to provide a geographical reference. For example, if an air mass originates in the polar regions, it may be referred to as a polar air mass.

Density: While temperature and humidity are the primary factors in air mass classification, density is indirectly related to these factors. Cold air is denser than warm air, so a cold air mass tends to be denser and has a greater tendency to sink and displace warmer, less dense air.

In summary, air masses are primarily classified based on temperature and humidity. However, factors such as location and density are considered to provide additional information about the air mass and its behavior within the atmosphere.

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Answer:

because they sex with their mother

Answer:

B. observation

Explanation:

Answer:

A

Explanation:

Understanding natural phenomena is by Experimentation

Answer:

The balloons repelled each other because they both are electrically charged.

electrically charged object produces electrostatic force . Two electrically charged object repels each other . So both balloons are charged

The balloons repelled from each other because they both are electrically charged and as we know electrically charged object produces electrostatic force, they repels each other .

The electrostatic force attraction or repulsion is defined as the force exists between two charged particles which is also known as Coulomb’s interaction or force, the atom's stability can be maintained by  the electrostatic force between protons and electrons.

For example,  a balloon is rubbed with human hairs and come close to another balloon, so they stick together, Lightning  due to electrostatic force, ironing a silk ,  it clings to the body due to electrostatic force.

Coulomb’s Force  can be applied to perform magic tricks, Photocopiers, Electrostatic air filters, Ink-jet and laser printers

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Answer:

flagella

chlorophyll

parasitic

Scientists have recently rejected "Protista" as a kingdom because as evolutionary and molecular knowledge continues to increase, the relationships among organisms are strengthened that weren't previously considered. It continues to be found that many protists don't share common ancestry with other protists that don't exclude other groups, such as plants, animals, and fungi. Protists had been previously classified through what they are not: plants, fungi, or animals. They share no characteristics that aren't also shared by "nonprotists."

The three main ways protists can move are through cilia, flagella, and pseudopods. All of these structures help protists to move in different ways through their environment.

The eukaryote that causes red tide is known as a dinoflagellate.

The eukaryotes that push carbon to the bottom of the ocean are known as diatoms. This is important to the ecosystem because it lowers the overall carbon dioxide levels in the air and buries the carbon deep in the sea.

The endosymbiotic theory posits that eukaryotes emerged when one or more prokaryotic cells ingested another prokaryotic cell, leading to the eventual eukaryotic cell.

Explanation:

Answer:

1. flagella

2. chlorophyll

3. parasitic

4. Scientists have recently rejected "Protista" as a kingdom because as evolutionary and molecular knowledge continues to increase, the relationships among organisms are strengthened that weren't previously considered. It continues to be found that many protists don't share common ancestry with other protists that don't exclude other groups, such as plants, animals, and fungi. Protists had been previously classified through what they are not: plants, fungi, or animals. They share no characteristics that aren't also shared by "nonprotists."

5. The three main ways protists can move are through cilia, flagella, and pseudopods. All of these structures help protists to move in different ways through their environment.

6. The eukaryote that causes red tide is known as a dinoflagellate.

7.The eukaryotes that push carbon to the bottom of the ocean are known as diatoms. This is important to the ecosystem because it lowers the overall carbon dioxide levels in the air and buries the carbon deep in the sea.

8.The endosymbiotic theory posits that eukaryotes emerged when one or more prokaryotic cells ingested another prokaryotic cell, leading to the eventual eukaryotic cell.

Explanation:

Answer:

pancreatic enzymes.....

Answer:

hope it helps mate

Explanation:

a) Two factors they need to keep the same in their investigation are the type of plant they are using and the amount of water and light they give each plant.

b) The factor they change is the amount of water and light they give to each plant.

To get their results, they measure the growth of each plant over a set period of time. They may also measure other factors such as the number of leaves, the height of the plant, or the color of the leaves to determine the overall health of the plant.

a) In their investigation, the students need to keep two factors the same:

1. Temperature: They must maintain a constant temperature of 25°C throughout the experiment.

2. Control substances: They need to keep the substances used in the control situation the same.

b) The factor they change is:

The students change the conditions related to the pH of the reaction mixture, the amount of yeast added, and the type of sugar used.

a) In their investigation, the students need to keep two factors the same:

1. Temperature: They must maintain a constant temperature of 25°C throughout the experiment. This ensures that any changes in the rate of fermentation are solely attributed to the variables they are testing.

2. Control substances: They need to keep the substances used in the control situation the same. This includes using 25 ml of buffer pH 7, 2 grams of sucrose, and 2 grams of yeast. Keeping these constant allows for a baseline comparison against the experimental conditions.

b) The factor they change is:

The variable being tested: The students change the conditions related to the pH of the reaction mixture, the amount of yeast added, and the type of sugar used. These variables are altered to observe their effect on the rate of fermentation.

To obtain their results, the students measure the pressure generated during the fermentation process. They use a Vernier Equipment Pressure sensor connected to a LabPro interface to record the pressure values over time.

By collecting and analyzing the pressure data, they can assess the rate of fermentation under different experimental conditions. The pressure readings indicate the gas produced as a byproduct of fermentation, providing a quantitative measure of the fermentation rate.

This allows the students to determine the optimal conditions for the new fermentation process to be used at the local bakery.

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Answer:

Linda's immune system will produce antibodies against the flu virus

Answer:

Linda's immune system will produce antibodies against the flu virus

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The flexibility of spider silk determined by the structure of its molecules is quite strong.

The components that make up spider silk are what give it its flexibility. Proteins called fibroins, which are made up of amino acids organised in a certain sequence, make up spider silk. The arrangement of amino acids in fibroin proteins results in a helical structure, which is held together by hydrogen bonds between the amino acids.

The fibroin protein chain's exact arrangement of amino acids and hydrogen bonds produces a special blend of strength and flexibility. The silk is flexible enough to stretch and absorb energy without breaking and robust enough to resist significant stress. Spider silk is a fantastic material for many uses, including clothes, medical equipment, and even bulletproof vests, thanks to its unique mix of qualities.

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Answer:

Double pane windows significantly reduce your energy use (and costs), particularly in the winter, when you can see significant energy savings, depending on your specific windows and technologies.

Explanation:

Answer:

What subject is it, and could you please show the formula?

Explanation:

Answer:

I can but umm I don't understand so sorry

Explanation:

I can't read that and don't know what it is about

Answer:constants

Explanation:The factors that can change value during an experiment or between experiments, such as water temperature, are called variables, while those that stay the same, such as acceleration due to gravity at a certain location, are called constants.

Answer:

pretty sure its d im so sorry if im wrong I greatly apologize

The relationship seen between the elk and wolf populations is that the elk population goes down when the wolf population goes up.

What we see reflected in the graph is that when the wolf population is low, the elk population is higher than this, but in 2003, when the wolf population increased, the elk population decreased. This makes us understand that the wolf population has an impact on the elk population since it may be that they feed on the elk by hunting them.

When there was a peak in the wolf population between 2004 and 2005 we see that the elk population drops suddenly, after this the wolf population drops and it could be assumed that it is because there is no longer enough food (elk) to maintain the population of these.

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Answer:

In RNA, instead of a T, there's a U.

Explanation:

TGAC will be translated as ACUG. Instead of thymine in RNA, there's uracil. Similar to DNA, G = C, but the only difference is A = U.

The term engineering as used in this process applied by the use of biology, medicine, and engineering to produce a material.

What is medicine?
Medicine is a field of science that studies the diagnosis, treatment, and prevention of diseases and other physical and mental impairments in humans. It includes the study of anatomy, physiology, pharmacology, and pathology. Medicine is a profession that requires extensive training and knowledge, and many medical professionals specialize in particular fields such as surgery, neurology, cardiology, oncology, gynecology, and pediatrics. Medicine is also used to prevent and treat ailments, as well as to improve and maintain physical and mental health. In addition, medicine is used to diagnose, treat and manage medical conditions and diseases.

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To create a knockout mouse, after introducing to ES cells a DNA construct in which a specific gene is mutagenized by the insertion of a drug resistance marker, the cells, that have incorporated the transgene by homologous recombination grow in the presence of the drug and these are injected into a host blastocyst. The correct option is A.

A biomarker is an objective measure of what is going on in a cell or organism at any given time. Biomarkers can serve as health-related early warning systems.

To create knockout mice, researchers insert artificial DNA into the chromosomes contained in the nuclei of ES cells using one of two methods.

Both methods are performed in vitro, that is, on cultured cells grown in a laboratory setting.

After introducing a DNA construct into ES cells that mutagenizes a specific gene by inserting a drug resistance marker, the cells that have incorporated the transgene via homologous recombination grow in the presence of the drug and are injected into a host blastocyst.

Thus, the correct option is A.

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Answer:

Mutualism and Commensalism

Explanation:

Answer:

1. No, cows don't get energy from sunlight.

2. 2 living parts are flowers and trees and 2 non-living parts are fences & houses

3. No, flies don't develop from garbage.

4. The populations in that living space will decline, because there won't be enough space.

5. A polar bear lives in a cold,arctic habitat.

6. A niche is the match of a species to a specific environmental condition.

Explanation:

Best guess is "The populations of the world would soon crowd one another out and make conditions unlivable."