(b) A student tested some albumen for the presence of protein using Biuret reagent.
The solution changed colour. It was a positive result.
Describe this colour change.

Answers

Answer 1

Answer:

The colour changes from blue to purple.

Explanation:

Because protein is present in the albumen (egg white.)


Related Questions

The heart has 4 valves. explain how one of them works.
(no plagiarism please!!) i'll mark brainliest!!! (20 points)

Answers

Answer:
Mitral Valve
Explanation:
The valves are made of strong, thin flaps of tissue called leaflets or cusps.
The leaflets open to let blood move forward through the heart during half of the heartbeat. They close to keep blood from flowing backward during the other half of the heartbeat.The Chordae tendineae and papillary muscles keep the leaflets stable to prevent blood from flowing backward. The mitral valve has only two leaflets. The leaflets are attached to and supported by a ring of tough, fibrous tissue called the annulus. The annulus helps to maintain the proper shape of the valve, and of course hold the leaflets in place.

Which of the following is NOT a way that industry can cause pollution?
A. putting smoke into the air
B. using chemicals that can wind up in the water supply
C. burning substances that put chemicals into the air
D. using detergents that put phosphates into the water

Answers

Answer:

A. putting smoke into air

Explanation:

Can't be B. because they are harming the water from dangerous chemicals. Not C. because they are harming the atmosphere from dangerous chemicals. Not D. because phospate is used in fertilisers and if that gets in water it will cause algae bloom a sudden growth in algae which will block light from coming in the river or lake and so hydrophytes(aquatic plants) will die and fish will not get any oxygen so will also die. The algae bloom creates toxic stuff because of competition and will make the river of lake dangerous to be in. We are only left with A. so that is the answer.

Answer:

Its D

Explanation:

Using detergents that put phosphates into water

which pollen grains are involved in insect pollination

Answers

Honey bees and other stuff to

Provide two examples that show how microorganisms help multicellular organisms survive.

Answers

Answer:

microorganisms rarely exist naturally as individuals, because one of their survival mechanisms is the ability to organize themselves into multicellular communities and to differentiate into specialized cell variants.

Explanation:

Microorganisms help living multicellular organisms by breaking down dead plant and animal tissues that help enrich the soil for farming, they also eliminate stocks of harmful bacteria that cause disease, noxious odors, and general unpleasantness. can do.

What are Microorganisms?

A microorganism is a type of organism of microscopic size that can exist in its single-celled form or as a colony of cells. An organism that can only be seen through a microscope includes bacteria, protozoa, algae, and fungi. Although viruses are not considered living organisms, they are sometimes classified as microorganisms.

They operate the basic drug cycles which is necessary for the plants' supply of nutrients through the reaction of organic matter in soil.

Every human body is host to 10 microorganisms for every human cell that contribute to digestion, produce vitamin K, promote immune system development, and detoxify harmful chemicals.

Thus, microorganisms help living multicellular organisms by breaking down dead plant and animal tissues that help enrich the soil for farming, they also eliminate stocks of harmful bacteria that cause disease, noxious odors, and general unpleasantness. can do.

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Explain use of transact​

Answers

The meaning of transact to operate or conduct something or an operation. The use of transact can be done in the sentence of business or transactions.

What is transaction?

It's an instance of selling or buying something. Transaction is related to money.

An exchange of goods to goods or money, or in taking out money. Transaction is used.

An example is taking money from ATM.

Thus, the meaning of transact to operate or conduct something or an operation. The use of transact can be done in the sentence of business or transactions.

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Answer:

The verb transact is almost always used with the word "business." To transact business is to conduct it, as when a shopkeeper sells groceries to a customer.

what happens during digestion of food molecules like carbohydrates fats and proteins?

Answers

Digestion of carbohydrates, proteins, and fats continues in the small intestine. Starch and glycogen are broken down into maltose by small intestine enzymes. Proteases are enzymes secreted by the pancreas that continue the breakdown of protein into small peptide fragments and amino acids.

I’m sorry if it’s a lot I just wanted to extend the explanation

I need help with number 1 and 2

Answers

I'm terrible with this stuff. Look it up?

Which of the following is evidence of evolution?
-Fossil record
-DNA analysis
-Comparative Anatomy
-All of the above

Answers

All of the above is the answer

Please help meeeee!!!!!!!!

Answers

Answer:

b

Explanation:

big brain moment right here

Hydrogen peroxide is a natural byproduct of cellular metabolism in the human body. It sometimes reacts with certain ions in the body to produce a very reactive, electron-grabbing form of hydroxide (OH-) that has been observed to kill healthy cells in vitro. This product can be considered a

Answers

Hydrogen peroxide is a natural byproduct of cellular metabolism in the human body. This product can be considered a free radical.

What is free radical?

A free radical may be described as any molecular species able to impartial life that consists of an unpaired electron in an atomic orbital. The presence of unpaired electron effects in sure not unusualplace homes which can be shared via way of means of maximum radicals. Many radicals are volatile and especially reactive.

These free radicals were recommended to be chargeable for reperfusion-triggered cardiac lovely and reperfusion-triggered arrhythmia. Hydrogen peroxide (H2O2) is frequently used as an experimental supply of oxygen-derived unfastened radicals.

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do stems anchor plants into the earth and draw water and nutrients from the soil?

Answers

Answer:

The roots absorb water and minerals from the soil and anchor the plant in the ground. The stem supports the plant above ground, and carries the water and minerals to the leaves.

Explanation:

HOPE IT HELPS.

PLEASE MARK ME AS BRAINLIEST.

This scientist is cretitded when established the theory of evolution

Answers

Answer:

Charles Darwin

Explanation:

if the speed of a player doubles (2x) his kinetic energy will

Answers

Change to 4x the initial kinetic energy! Hope it helps!

4. Which is an example of artificial selection?
-There are 4 different species of Hyena
-Red fox and Fennec Fox
-Fancy Pigeon breeds raised by Mike Tyson
-A Peacock and a Peahen

Answers

Answer: Fancy Pigeon breeds raised by Mike Tyson

Explanation:

Having 4 species of hyena and having a Red fox and Fennec fox are not artificial selection; they are natural species differences. Having a peacock and a peahen is an example of dimorphism. Fancy pigeon breeds are artificially selected for their most desirable characteristics - humans interfere with natural selection.

Answer:

Fancy Pigeon Breeds raised by Mike Tyson

Explanation:

This is because the selection is being performed by a human for artificial and cosmetic reasons and the pigeons are being bred for their "fanciness." Natural selection happens because an animal needs to adapt for survival reasons, whereas this artificial selection isn't happening "naturally" for survival reasons, only for looks, etc.

hope this helps! :)

Which part of the leaf lets carbon dioxide into the leaf and oxygen and excess
water out of the leaf?
1 chloroplasts
2 epidermis
3 stomata
4 veins
5 none of the above

Answers

The flat surface of the leaf contains many tiny openings called stomata. These are like very small holes that allow carbon dioxide into the leaf, and let oxygen out.

Fun fact: there can be over 100,000 stomata in an inch of leaf!

what happens during translation?

a) each strand of DNA is used as a template to produce a complementary strand of DNA

b) each strand of DNA is used as a template to produce a strand of DNA with the same sequence as bases

c) each strand of DNA is used as a template to produce a complementary strand of mRNA

d) codons coded in the mRNA are used to produce a string of amino acids

Answers

During translation, codons coded in the mRNA are used to produce a string of amino acids. The correct answer is D.

Translation is the process in which the genetic information encoded in the mRNA molecule is used to synthesize a protein. It takes place in the ribosomes, where transfer RNA (tRNA) molecules carrying specific amino acids bind to the corresponding codons on the mRNA. The sequence of codons on the mRNA determines the sequence of amino acids in the resulting protein.

The process begins with the initiation stage, where the small ribosomal subunit binds to the mRNA and the initiator tRNA recognizes the start codon. Then, the large ribosomal subunit joins the complex, and the elongation stage begins.

During elongation, the ribosome moves along the mRNA molecule, reading each codon and bringing in the appropriate tRNA molecule with its attached amino acid.

The ribosome catalyzes the formation of peptide bonds between adjacent amino acids, forming a growing polypeptide chain. This process continues until a stop codon is reached, signaling the termination stage and the release of the completed protein.

In summary, translation involves the decoding of the mRNA sequence by ribosomes, using tRNA molecules and their associated amino acids to assemble a polypeptide chain according to the instructions carried by the codons on the mRNA. Therefore, the correct answer is D.

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Which is true about distillation?

Answers

Distillation is a method for separating the components of a mixture based on boiling point differences

Answer: It may leave some chemicals such as herbicides and pesticides in the water.

A red blood cell is 8um in diameter
A bacterial cell is 40 times smaller
Calculate the diameter of the bacterial cell
tick one box
0.02um
0.2um
2.0um
20.0um

Answers

Answer:  The answer is 0.2 um

Explanation:  This is a simple division problem.  8 um/40 = 0.2 um

Plants' leaves absorb energy from __________, which often comes from the Sun. What word completes the sentence?

Answers

Answer:

Plants' leaves absorb energy from [tex]\boxed{\bf sunlight}[/tex], which often comes from the Sun.

Explanation:

Plants create glucose and oxygen from carbon dioxide and water in the presence of sunlight which provides energy for the reaction to occur.

Sunlight is an essential component during photosynthesis.

What is the chemical formula for love hormone ?

Answers

C8H11NO2 + C10H12N2O + C43H66N12O12S2 is this what you were asking?

BRAINLIEST!!!

What is the regulation of stable internal conditions inside an organism or a cell?
A. Responding to stimuli
B. Obtaining and using energy
C. Homeostasis
D. Cellular respiration

Answers

I think it’s D based off this I also did this exam

Answer:

The answer is (C)Homeostasis

The diagram shows different fossil layers found in central Texas. Which other fossil would also most likely be found in layer C?​

Answers

The other fossils that would be found are horses because over the years they died

constituents of soil
please don't delete my question again​

Answers

Answer:

Soil is a material composed of five ingredients — minerals, soil organic matter, living organisms, gas, and water.

Explanation:

Soil is composed of both biotic—living and once-living things, like plants and insects—and abiotic materials—nonliving factors, like minerals, water, and air

Answer:

Nonliving factors, like minerals, water, and air. Soil contains air, water, and minerals as well as plant and animal matter, both living and dead.

Please use the space below to write a WELL THOUGHT OUT PARAGRAPH as to the question prompt! Question Prompt: Should the US and China be responsible for finding a peaceful solution to this modern day “space race”? Should it be whoever establishes dominance first, sets the rules? Support your answer with details!!!!

Answers

Answer:

Yes

Explanation:

The US and CHINA are known as the world power, they have what it takes for finding a peaceful solution to this morden day "space race".

How do human activities affect the global ocean?

Answers

Answer:

positive affects and negative

Explanation:

Habitat Destruction. Virtually all Ocean habitats have been affected in some way via drilling or mining, dredging for aggregates for concrete and other building materials, destructive anchoring, removal of corals and land “reclamation”.

Which is the principal means of delivering oxygen from the blood to other tissues in the body?.

Answers

The principal means of delivering oxygen from the blood to other tissues in the body is through the circulatory system.

What is Circulatory system?

This system comprises mainly of the heart and blood vessels such as arteries etc.

The lung delivers oxygen which is pumped by the heart in the form of oxygenated blood to other parts of the body.

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What idea did Francis Redi's experiment with the meat and maggots disprove?*
a. biogenesis
b. spontaneous generation
c. endosymbiosis
d. primordial soup​

Answers

Answer:

B.

Explanation:

it’s called the spontaneous generation! It’s the answer to your question since to me it makes sense and I can just tell it’s correct. If you have any other questions just tell me and I’ll help in any way possible!

Olivia looked under a microscope and saw tiny protists moving around on the slide from water in a pond near her house. She remembered what she had leamed about the cell theory as she observed the protists moving. All of the following are included in the cell theory except:

A. New cells are produced from existing cells.

B. Cells are the basic units of structure and function of living organisms.

C. Cells divide when they begin to grow too large to function.

D. All living things are made of cells​

Answers

Answer:

She remembered what she had learned about the cell theory as she observed the protists moving. Which three ideas are included in the cell theory ..

Explanation:

Answer:

C.  Cells divide when they begin to grow too large to function.

Explanation:

A, B, and D are all parts of the Cell Theory.

10)“If Jupiter was not there, there could be more terrestrial planets”. Explain how

Answers

Answer:

Soler system would not be well


How does the scientific naming system help all scientists understand
relationships among organisms?

Answers

Answer:

Scientific names are used to describe various species of organisms in a way that is universal so that scientists around the globe can readily identify the same animal.

Explanation:

Answer:

the different animal species that might have the same name or not so they use scientific description such as habitat genetics and appearance.

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See picThe area of a rectangle is 3 3/4 FIND THE EXACT AREA PLEASE HELPPPP ILL GIVE BRAINLIESTTTT jonah has a recipe thats used 1 1/2 cups of brown sugar and 2 1/3 cups of flour to make 24 muffins. How many muffins can jonah make if he uses all 7 cups of flour? In at least 150 words, describe how the American Utopia that Crevecouer describes is just thata utopia, an imaginary place in which everything is perfect. Which of these things should you make sure you have in your first or second paragraph?A. the claim that your report will prove or explainB. your most convincing evidenceC. the reasons that support your claimHelp Please T-T (Python coding)4.3 Code Practice: Question 2 instructions:Write a program that uses a while loop to calculate and print the multiples of 3 from 3 to 21. Your program should print each number on a separate line.Expected Output:3 6912151821 What information is more likely to appear in a secondhand account instead of a firsthand account?A. What happened minutes before the event?B. How the writer felt like during the event?C. Exactly what was said at the event?D. What happened years later, as a result of the event?(Please help me fast! I am on a exam so I need the answer the fastest I can get it!!!) A health food store has launched a new pack of vitamins for children. The store records the number of packs ordered by a random sample of 100 online customers and the number of packs ordered by a random sample of 100 walk-in customers.Two dot plots are shown one below the other. The title for the top dot plot is Online Customers and the title for the bottom plot is Walk In Customers. Below the line for each dot plot is written Number of Packs. There are markings from 1 to 5 on each line at intervals of one. For the top line there are 0, 0, 1, 4, 5 dots respectively for marks from 1 to 5. For the bottom line there are 3, 6, 1, 0, 0 dots respectively for marks from 1 to 5. On the right side, towards the middle of the two plots is shown a dot symbol equal to 10 customers.Which inference can be drawn about the buying pattern of the online customers versus that of the walk-in customers? Online customers buy an average of 4 packs compared with walk-in customers, who buy an average of 1 pack. Online customers buy an average of 5 packs compared with walk-in customers, who buy an average of 2 packs. Online customers buy an average of 4 packs compared with walk-in customers, who buy an average of 2 packs. Online customers buy an average of 5 packs compared with walk-in customers, who buy an average of 1 pack. How do advertisers mislead consumers regarding the benefits of drinking energy drinks? (ASAP please help) How far is 6:45 A.M to 3:28 P.m As a detective, you have to assume Oswald is guilty of the crime. How can you explain these pieces of evidence? HELP ASAPRefer to your Expeditions in Literature and The Adventure of the Six Napoleons for a complete version of each text.How are The Adventure of the Three Students and The Adventure of the Six Napoleons different?Select the two correct answers.Several people commit crimes in The Adventure of the Three Students, but in The Adventure of the Six Napoleons, only one person commits a crime.In the first story, Holmes takes the case to help a friend; in the second story Holmes takes the case because he is bored.In the first story, no one is physically harmed, but in the second story, someone is murdered as part of the case.Holmes solves the case without the police in The Adventure of the Three Students," but in The Adventure of the Six Napoleons, Holmes works the case with Inspector Lestrade. 4. While blood contains glucose, potassium, albumin, and chloride molecules, a normal urine sample containsonly potassium and chloride molecules. Why do you thing this is so? (1 mark) Which of the following questions ought to be asked during the canon of invention?O How should I organize the information I want to present?O Will elevating or simplifying my language help me better make my point?O What subject should I write my speech about?O What tools can I use to help me remember my main points or supporting evidence?O How is my audience reacting to my speech? What should I improvise? For which value of b will the quadratic equation x^2 bx + 16 = O haveexactly two different integer solutions? Select all that apply. There were at least three reasons why the Japanese attacked Pearl Harbor Write a sentence using the word dissension.Will give brainliest!! as you read lines 86-156, prepare cite text evidence.underline text explains wat the gall bladder and ists bile represent to the parents Which TWO types of waves can transmit energy through a vacuum?A.) radio wavesB.) seismic wavesC.) sound wavesD.) water wavesE.) x-rays Scott Jensen owned two hundred acres of farmland in California. A creek flowed through the land, and Jensen used water from the creek to irrigate his crops. The water was adequate for his needs. Wesley Sarvis purchased farmland upstream from Jensen's property and began using water from the creek to irrigate. Claiming that he had exclusive rights to the water, Jensen filed a lawsuit in a California state court against Sarvis for using the water. The court held that Jensen and Sarvis had to divide their water use equally and that each of them was entitled to use the water every other week. Fifty years later, a similar dispute arose between two more California farmers. Bo Ellis lived upstream from Faye Deason. Deason claimed that she had exclusive rights to the water and filed a lawsuit in a California state court against Ellis for his use of the water. In the second case, Deason v. Ellis, the court will most likely: