You will know a test is positive for glucose and starch when Benedict's reagent will give a positive test result for glucose but not for starch.
Explanation:
Benedict's Test is used to test for simple carbohydrates. The Benedict's test identifies reducing sugars which have free ketone or aldehyde functional groups. Food scientists can test for starch in food using iodine solution. If starch is present, the iodine will turn dark blue. Testing for sugar can be performed with Benedict's solution. The Benedict's solution is added to the sample, and heated for five minutes. The test involves heating a solution of the sugar to be tested with Benedict's reagent and observing the colour change of blue to orange. Benedict's reagent will give a positive test result for glucose but not for starch.Benedict's solution can be used to test for the presence of glucose in urineWhich of the structures shown below is NOT homologous with the others?
Answer:
i think is c
Explanation:
it has less bones then the others
How could you investigate the idea that DNA is found only in living or once-living things?
Answer:
Yes, DNA is present in all living and once living cells. Scientists can use DNA from mummies or seeds that are thousands of years old and identify the genetics of those plants and animals using their DNA.
Explanation: I don't think this is right but I have to believe in myself so this is right I know that it is right
During the Calvin cycle of photosynthesis, a plant cell uses carbon dioxide to synthesize large carbohydrates.
Which statement about this reaction is true?
A. energy is consumed.
B. It is a catabolic pathway of metabolism.
C. ATP is produced.
D. It is an exergonic reaction.
The true statement is that A. energy is consumed.
Where is the energy consumed?People use a whole lot of electricity in homes, in organizations, and in enterprises, and to travel and deliver goods. There are four end-use sectors that purchase or produce power for their own consumption and now not for resale: The residential zone consists of houses and apartments.
General energy intake is made of production plus imports, minus exports, minus global marine bunkers plus/minus stock modifications. It's also known as general primary energy delivery or Gross inland energy intake and represents the quantity of all strength necessary to satisfy inland intake.
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Cardiac muscle causes movement in the
A) bone
B) tendon
C) ligament
D) organ
Answer: d organ
Explanation: for shoure [not a good spell'er]
So how do we get chickens with white and black spots? Shouldn’t they be only white or black?
Answer:
Codominance
Explanation:
This is an example of codominance.
Basically with this type of genetics, both alleles for that trait, in this case feather color, are dominant. This means that both will appear in the phenotype, instead of a dominant phenotype overshadowing a recessive phenotype.
Here, the two dominant alleles are the one that governs white pigment and the one that governs black pigment. Since codominance is occurring, we see a speckled chicken instead of just an entirely white one or an entirely black one.
Hope this helps!
What point is Huxley making about human nature and the nature of human communities?
The point that makes is that these are problems which can not be solved.
Explanation:
The point that Huxley makes about the nature of human and the nature of the communities of the human is that these are certain problems and such problems are not solvable.
Social engineers like Mustapha Mond ends up asking the questions like what is that thing which prevents the people from being happy in their lives. And after knowing that thing, there should be efforts made to remove the source of unhappiness of the people.
A student and their pet (is mutualism, commensalism, or parasitism.)
Answer:
mutualism
Explanation:
nothing is gained from either side besides the student taking care of the pet and loving it
Answer: Commensalism
Explanation: Commensalism by definition means "biological interaction in which members of one species gain benefits while those of the other species neither benefit nor are harmed". The student is benefiting the pet by giving food and love while the pet is not giving the student anything back.
A plant heterozygous for yellow pod color (Yy) is crossed with a plant homozygous for green pod color (yy). Which trait is dominant? Which trait is recessive?
Answer: edge2020: B) yellow pod color
Explanation:
Which of the following would cause only a chemical change with a sugar cube
Answer:
Which would cause only a chemical change in a sugar cube is heating the sugar cube with acid.
Explanation:
The complete question is:
Jolene wants to experiment with sugar cubes. Which of the following would cause only a chemical change with a sugar cube
Burning the sugar cube with a matchstick .Crushing the sugar cube and dissolving it in water .Heating the sugar cube with acid.The addition of acid to sugar (sucrose) is a known reaction that produces the chemical change of this carbohydrate into carbon, by a process of dehydration.
In the reaction of dehydration of sucrose with sulphuric acid - which is exothermic - the acid extracts water from the sugar molecule, producing gases, such as CO₂ and SO₂, which consumes the acid and converts the sucrose into carbon. The chemical reaction is:
C₁₂H₂₂O₁₁ + H₂SO₄ + 1/2 O₂ ----------→ 11C + CO₂ + 12H₂O + SO₂
Sucrose + Sulfuric Ac. + Oxygen → Carbon + Carbon dioxide + water + sulfur dioxide.
This reaction involves only a chemical change of the sucrose, when converted into carbon.
(1) During the Spanish-American War, U.S. soldiers were supplied with tin cans containing decayed meat. (2) Due to a lack of food safety standards, vendors in the 1800s often sold food that would not today be considered fit for people to eat. (3) Store-bought butter was often stale and mixed with gelatin, fat, and even mashed potatoes. (4) To improve the color of milk from diseased cattle, dairymen sometimes added molasses, chalk, or plaster of Paris. Which sentence is the point of the argument?
Answer:
It will be 2.
Explanation:
It is the start and introduction to the Arguement.
The point of the argument is the lack of food safety standards in the past, as highlighted by sentence (2) which directly mentions the sale of unfit food. It underscores issues from the Spanish-American War to the broader historical context of food processing.
The point of the argument in the given sentences is that food safety standards in the past were inadequate, leading to the consumption of contaminated and adulterated foods. Sentence (2) articulates this point directly by stating that vendors sold food not considered fit to eat by today's standards. Historical context shows that during times of war and industrialization, there was often a compromise on the quality of food, which was processed in unsanitary conditions or adulterated to make it seem more appealing. Troops during the Spanish-American War faced similar issues with contaminated supplies, which sometimes had dire health consequences. At the same time, the mass production of food using industrial methods and the necessities of war sometimes led to improved access to various foodstuffs, even if the quality was compromised.
Hence, the correct answer is (2) Due to a lack of food safety standards, vendors in the 1800s often sold food that would not today be considered fit for people to eat.
which of the following must happen for a transcript of the lac operon genes to take place?
a.the repressor proteins bind to the dna molecules, and rna polymerase falls off.
b.lactose removes from the system.
c.the repressor proteins bind to the promoter sequences.
d.the repressor proteins falls off the dna molecules, and rna polymerase binds to.
Answer:
a
Explanation:
Name three ecosystem services provided by
biodiversity.
Answer:
Ecosystem services, such as Protection of water resources Soils formation and protection Nutrient storage and recycling Pollution breakdown and absorption Contribution to climate stability Maintenance of ecosystems Recovery from unpredictable events Biological resources, such as Food Medicinal resources and pharmaceutical drugs Wood products Ornamental plants Breeding stocks, population reservoirs Future resources Diversity in genes, species and ecosystems Social benefits, such as Research, education and monitoring Recreation and tourism Cultural values
Explanation:
food
medicine
wood products
ornamental plants
breeding stocks
future resources
genetic diversity
Answer:
food
medicine
wood products
ornamental plants
future resources
genetic diversity
Explanation:
any of these answers are ecosystem services provided by biodiversity.
correct on edg
In wich structure is all genetic information of an organisism found
Answer:
The nucleus / DNA
Explanation:
The DNA is where all genetic information is and it is stored in the nucleus of each cell.
Which substance is comprised of more than one element?
aluminum
helium
silver
steel
Answer:
steel
Explanation:
use a periodic table
Steel. It's a metal made of mainly iron and carbon, as well as other metalloid elements.
Viruses are sometimes triggered into an active state by overexposure to sun, sickness or stress
Answer:
True
Explanation:
True because bacteria multiplies in the heat more rapidly
Final answer:
Viruses can remain dormant or become activated by stress, leading to a range of diseases, including cancer. They are treated with antiviral drugs and vaccines but can sometimes resist treatment by mutating or evading the immune system.
Explanation:
Viruses are known to cause a wide range of effects in host organisms, and certain environmental factors like overexposure to sun, sickness, or stress can trigger them into an active state. This active state can lead to abnormal growth of the cell or cell death, and sometimes, viruses lay dormant for extended periods without causing noticeable symptoms. When activated, some viruses are associated with serious diseases, ranging from the common cold to more serious ailments like meningitis and cancer. In the latter, viruses such as oncoviruses contribute to cancer by inactivating tumor suppressor proteins, leading to uncontrollable cell growth. Treatment for viral diseases includes antiviral drugs and vaccines, although some viruses can evade immune responses or develop drug resistance.
All of the following are examples of biofuels EXCEPT
Biodiesel
Propane
Ethanol
Methanol
Answer:
propane
it's propane because biodiesel is a form of diesel fuel, ethanol is a chemical compound and methanol is the simplest alcohol.
Answer:
Propane
Explanation:
Which statements show the importance of clean air?
The statements that show the importance of clean air are:
Air is a natural resource.
Governments manage air pollution to provide clean air.
Ultrafine particles contribute to 17,000 deaths per year in the United States.
Particles in the air cause health problems.
These statements highlight the significance of clean air for human health, the role of governments in managing air pollution, and the detrimental effects of air pollution on both individuals and society.
Air is an essential natural resource that is composed of various gases, including oxygen, nitrogen, carbon dioxide, and trace elements. It is necessary for the survival of all living organisms, including humans, animals, and plants.
Governments manage air pollution to provide clean air: Governments around the world recognize the importance of clean air and take measures to manage and reduce air pollution. They implement regulations, policies, and standards to control emissions from industries, vehicles, and other sources, aiming to improve air quality and protect public health.
What is a nucleotide?
Answer:
A nucleotide is a compound consisting of a nucleoside linked to a phosphate group. Nucleotides form the basic structural unit of nucleic acids such as DNA.
Explanation:
Answer:
Definition of nucleotide. : any of several compounds that consist of a ribose or deoxyribose sugar joined to a purine or pyrimidine base and to a phosphate group and that are the basic structural units of nucleic acids (such as RNA and DNA) — compare nucleoside.
Explanation:
Which chemical can be toxic to the cells if it is not removed?
O oxygen
O glucose
O water
O carbon dioxide
Answer:
Carbon Dioxide
Explanation:
Your body's organs, such as your heart and brain, need oxygen-rich blood to work well. Respiratory failure also can occur if your lungs can't properly remove carbon dioxide from your blood. Too much carbon dioxide in your blood can harm your body's organs.
Which of the following is true of penguins?
A. They live in the polar regions of the Northern and Southern hemispheres.
B. They can be found as far north as the Equator.
C. They are ectotherms.
D. They time their reproduction so that eggs hatch during the winter.
E. They are able to fly when disturbed.
A. They live in the polar regions of the Northern and Southern Hemispheres.
Final answer:
Penguins can be found as far north as the Equator, with the Galapagos penguin living near that region (option B). They are not ectotherms but endotherms, and they do not fly as they are flightless birds who are adapted for swimming and diving.
Explanation:
Of the options provided about penguins, B. They can be found as far north as the Equator is true. Penguins primarily live in the Southern Hemisphere, particularly in Antarctica, though not exclusively so. One species, the Galapagos penguin, lives near the Equator. Penguins are endotherms (warm-blooded), which allows them to maintain a stable body temperature despite environmental fluctuations. Therefore, it is incorrect to say they are ectotherms. Regarding their breeding habits, many penguin species time their reproduction so that the chicks are hatched and reared during the warmer months when food is more abundant, not in the winter. Finally, penguins are flightless birds, so they cannot fly when disturbed or under any circumstance. They are well-adapted to swimming and diving instead.
will give brainliest
can choose more than one
Which of the following statements about genes and traits is true?
A single gene can control a single trait.
A single gene can influence multiple traits.
A single trait can be controlled by multiple genes.
A single trait can alter multiple genes.
Answer: A single gene can influence multiple traits
Explanation: One Gene Can Affect Multiple Traits. How can a mutation in one single gene cause a disease with a wide range of symptoms? This situation is referred to as pleiotropy, and it has been identified in a wide range of species, even humans. ... A pleiotropic gene is a single gene that controls more than one trait.
Chunks of rock and metal from planetary bodies that survive their journey through the atmosphere and fall to the ground are called meteorites and scientists have found over 50,000 on Earth's surface. What is the origin of the majority these meteorites?
A. They are pieces of a planet that have broken off.
B. They are the original materials from which the planets formed.
C. They are bits of our moon that have eroded and fell back to Earth.
D. They are jarred loose from a meteor belt found among the outer planets.
Final answer:
The majority of meteorites are fragments from asteroids and are primitive objects that date back to the formation of the solar system. Some may also originate from impacts on planets like Mars or our Moon.
Explanation:
The majority of meteorites originate from the debris of space, mostly fragments of asteroids, and to a lesser extent, from impacts on Mars or our Moon. Meteorites represent primitive objects that are dated back to the origin of the solar system around 4.5 billion years ago and are considered remnants of the solar nebula from which the solar system formed. These remnants, which include asteroid fragments and possibly pieces from planetary impacts, have managed to survive the fiery journey through Earth's atmosphere and reach our planet's surface.
Please answer both questions
In plants, gymnosperms have cones and angiosperms have flowers. What are both of
these plant structures specialized for?
Ophotosynthesis
food production
water absorption
O sexual reproduction
Answer:
O sexual Reproduction
Explanation:
The cones and flowers of gymnosperms and angiosperms are respectively specialized structures for se*ual reproduction.
What is se*ual reproduction?Se*ual reproduction is the process whereby a new organism is created by combining the genetic material of two organisms.
Higher plants, which consists of angiosperms and gymnosperms reproduce via se*ual means.
Angiosperms also called flowering plants produce flowers while gymnosperms produce structures called cones.
These structures (cones and flowers) produced by gymnosperms and angiosperms respectively are used for se*ual reproduction.
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Biodiversity is the variety of life in an area that is determined by the number of different species in that
area.
True or false
Answer:
True
Explanation:
Because Bio means life, and diversity means the different species in one area.
Drag each label to the correct location
Claire had a heavy breakfast early in the morning. Then she went to the gym to exercise. After the gym. Claire went to class.
While exercising the body requires a continuous supply of energy and uses up blood sugar at a faster rate. How will hormones maintain the
sugar balance in the body from breakfast until Claire has lunch?
high blood sugar
secretion of glucagon
secretion of insulin
glycogen breaks down
to glucose
after breakfast
blood sugar low
pancreas
pancreas
intake of sugar
by liver cels
The Langerhans cells in the pancreas secrete the polypeptide hormone insulin, which has a hypoglycemic impact. The function of the pancreatic hormone glucagon is to promote the conversion of glycogen to glucose.
What is an Insulin Hormone?Insulin primarily a peptide hormone that is secreted by the islets of the pancreas of Langerhans cells. It regulates carbohydrate, lipid, and protein metabolism, facilitates cellular glucose uptake, and promotes cell division and proliferation via its mitogenic effects.
Following a meal, carbohydrates decompose to produce glucose, a sugar that serves as the body's main source of energy. After then, glucose enters the bloodstream. In response, the pancreas produces insulin, allowing glucose to get into the body's cells and fuel them with energy.
Therefore, the Langerhans cells in the pancreas secrete the polypeptide hormone insulin, which has a hypoglycemic impact. The function of the pancreatic hormone glucagon is to promote the conversion of glycogen to glucose.
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Please help!
Use the drop-down menus to select the correct reactant or product.
__________ enters the stomata.
__________ exits the stomata.
___________ is absorbed by the roots.
Answer:
1 Carbon dioxide (CO2) enters
2 Oxygen exits
3 water H2O is absorbed
Answer:
1. carbon dioxide
2. oxygen
3. water
Which supports the idea that birds and butterflies both have wings but they do not have a common ancestor with wings?
The wings are analogous structures that evolved differently and do not have a similar internal structure.
The wings are homologous structures that evolved differently and do not have a similar internal structure.
Wings of birds are vestigial structures, but the wing structures of bats are not vestigial.
Wings of bats are vestigial structures, but the wing structures of birds are not vestigial.
Answer:
The wings are analogous structures that evolved differently and do not have a similar internal structure.
Explanation:
The wings have the same function, but birds and butterflies evolved in different ways, so the internal structures are not the same.
Male-pattern baldness is a X-linked recessive trait, labelled X^{\text{b}}
b
start superscript, start text, b, end text, end superscript, with the dominant normal hair gene being X^{\text{B}}
B
start superscript, start text, B, end text, end superscript.
A father with the genotype X^{\text{B}}
B
start superscript, start text, B, end text, end superscriptY and a mother with the genotype X^{\text{b}}
b
start superscript, start text, b, end text, end superscriptX^{\text{b}}
b
start superscript, start text, b, end text, end superscript have a son.
What is the percent chance that the son will inherit male-pattern baldness?
Answer:
100%
Explanation:
Pattern baldness if X linked and recessive.
A father with [tex]X^BY[/tex] and a mother with [tex]X^bX^b[/tex] have a son.
First, let us look at the result of the cross between the two:
[tex]X^BY[/tex] x [tex]X^bX^b[/tex]
male progeny: [tex]X^bY, X^bY[/tex]
female progeny: [tex]X^BX^b, X^BX^b[/tex]
The two sons resulting from the cross inherited male pattern baldness. Hence, the percentage chance that the son will inherit male pattern baldness is 100.
what describes the similar functions of capsids and nuclear membranes
Answer:
Both protect genetic information for the structures.
Explanation:
The capsid is defined as the polyhedral structure which is made up of a different protein shell which is known as capsomers, and that helps to surround the viral genome (DNA or RNA). The important function of the capsid is, it protects the nucleic acid by the digestion of enzymes.
Every nucleus is surrounded by a nuclear membrane. The nuclear membrane also protects the genetic material (DNA) from the substances which are present in the cytoplasm of the cell and keeps DNA inside the nucleus.
Answer: C both protect genetic information for the structures.
Explanation: