Answers
Answer:
2.41 × 10^24 molecules
Explanation:
To calculate the number of molecules of a substance (nA), we multiply the number of moles of such substance (n) by Avagadro's number or constant, which is 6.02 × 10^23.
That is; nA = n × 6.02 × 10^23.
In this question, 4 moles of glucose were given. The number of molecules in 4 moles of glucose is as follows:
nA = 4 × 6.02 × 10^23
nA = 24.08 × 10^23
nA = 2.41 × 10^24 molecules.
Related Questions
Which of the following provides evidence of the Golgi apparatus and endoplasmic reticulum interacting to allow the cell to maintain homeostasis?
OPTIONS
When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell.
Chemical messages are transported to all parts of the cell to signal the increase of protein synthesis and excretion of excess water.
Specific instructions code for the manufacturing of proteins, which are assembled and used as enzymes for the production of the cell’s energy.
Waste produced as a result of cellular respiration is packaged and stored for eventual release out of the cell through active transport.
Answers
"When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell."
What is protein modification?The process of protein modification and transport, which involves the Golgi apparatus and endoplasmic reticulum working together. In this process, proteins synthesized in the endoplasmic reticulum are modified by the Golgi apparatus and packaged into transport vesicles for delivery to other parts of the cell.
This interaction between the Golgi apparatus and endoplasmic reticulum is important for maintaining cellular homeostasis by ensuring that proteins are correctly modified and delivered to their intended destinations within the cell.
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Answer:
The correct answer is When transport vesicles are received, chemicals are modified; the resulting products are packaged for transport to other parts of the cell. This statement provides evidence of the Golgi apparatus and Endoplasmic Reticulum interacting to allow the cell to maintain homeostasis because it describes the process in which chemicals are modified by the Golgi apparatus, packaged by the Endoplasmic Reticulum, and transported to other parts of the cell.
What is the ethical value of using a model organism, such as zebrafish for doing marine research on pathogens?
Answers
The correct option is the last one: "The organism (zebrafish shares its physiology with humans..." This is importante, since several drugs or experimental treatments, whose consequences are unpredictable, are able to be tested without harming people. Assessing risk-effectiveness of new treatments is critical for the final decision upon they will be massively used or not. Besides, zebrafish is a low cost organism that could be maintained with few cares and it can produce a lot of individuals, which is desirable in scientific experimental design.
List the following terms, from larger to smaller in size, of the following substances: compound, atom, neutron, molecule, electron, and matter.
Answers
Answer:
Neutrons, protons, electrons, elements and compounds
Explanation:
The above graph shows how temperature affects the rate of a reaction that uses the catalase enzyme. What trend is shown by the graph?
A.
Between zero and twenty-seven degrees Celsius, the rate of the reaction increases as the temperature increases.
B.
Between thirty-seven and sixty degrees Celsius, the rate of the reaction increases as the temperature increases.
C.
Between zero and twenty-seven degrees Celsius, the rate of the reaction decreases as the temperature increases.
D.
Between sixty and one hundred degrees Celsius, the rate of the reaction decreases as the temperature increases.
Answers
Answer:
the answer is A.
Explanation:
B and C are wrong because they are describing the opposite of what is happening in the graph. D is wrong because there is no change in the reaction rate between 60 degrees and 100 degrees.
The rate of the reaction rises with temperature between zero and twenty-seven degrees Celsius, hence option A is correct.
How does enzyme activity is affected?At various temperatures, catalase functions in different ways. The catalase enzyme becomes more active as the temperature rises from 0°C to about 30°C Up to 100°C, and catalase activity declines as the temperature rises.
The hydrogen bonds between molecules of hydrogen peroxide relax as the temperature rises toward the optimal point, facilitating catalase's reaction with the molecules.
Temperature raising speeds up a process, and lowering temperature slows it down. If the temperature rises over the optimal range, the enzyme denatures and its structure is destroyed.
Therefore, but extremely high temperatures can denature an enzyme, causing it to lose its form and cease functioning. Every enzyme has a preferred pH range, hence option A is correct.
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Please select the word from the list that best fits the definition
plants that require short nights to flower
long-day plants
gibberellins
stimulus
cytokinins
day-neutral plants
photoperiodism
short-day plants
abscisic acid
tropism auxin
photosynthesis
respiration
Answers
Answer:
long-day plants
gibberellins
stimulus
cytokinins
day-neutral plants
photoperiodism
short-day plants
abscisic acid
tropism auxin
photosynthesis
respiration
why luke warm temperature is not suitable for washing
Answers
Answer:
There are certain times in life we are told to use a liquid that is lukewarm, mainly when we are bathing or feeding a baby, and when we are baking with yeast. For those of us who are not experts at either, this direction can be stressful—how warm is lukewarm? What will happen if it is too hot? Or too cool? We know (and don't want to think about) what will happen if the liquid is too hot to bathe or feed the baby, but what about when using yeast in a recipe? Before we get into those details, it is important to understand what lukewarm really means.
What is the correct order of carbon dioxide as it leaves the respiratory tract?
Answers
Answer:
please give me brainlist and follow
Explanation:
Carbon dioxide (CO2) is transferred from returning blood back into gaseous form in the lungs and exhaled through the lower respiratory tract and then the upper, to complete the process of breathing.
NO LINKS AND I WILL GIVE BRAINLIEST!!
How was a round-the-world voyage useful to Darwin for developing his theory of evolution?
Answers
Answer: During the long voyage, Darwin made many observations that helped him form his theory of evolution. For example: He visited tropical rainforests and other new habitats where he saw many plants and animals he had never seen before (see Figure below). This impressed him with the great diversity of life.
Explanation:
An investigation involving osmosis and plant cells was performed by a group of students. Sweet potatoes were used as
the source of plant cells in the experiment. A sweet potato was diced into evenly sized andshaped cubes and placed
in beakers containing various glucose concentrations. The experimental setup is shown in the table here.
Which statements accurately predict the beaker in which water will enter the cells at a greater rate, causing an
Increase in mass for the sweet potato cells?
A)
Beaker 1
B)
Beaker 3
C) beaker 4
Answers
Answer:
A
Explanation:
Water will enter and leave the cells at the same rate via osmosis
The correct option is (A) Beaker 1 in which water will enter the cells at a greater rate, causing an increase in mass for the sweet potato cells.
What is Osmosis?Osmosis refers to a process in which the water or solvent diffuse across a semipermeable membrane (here cell membrane) from the area of high solute (here glucose) concentration to low solute concentration. The concentration of glucose in the water of beaker 1 is 1.5M which is highest as compared to other beakers.
The concentration of glucose solution in beaker 1 is hypertonic to the concentration of glucose in the cell which makes the water to move inside the cell via osmosis. Movement of water inside the cell results in increase in mass for the (sweet potato) cells.
Thus, the water will enter the cells at a greater rate in the beaker 1 because the glucose concentration is highest in the beaker 1 corresponding to its cell glucose concentration.
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compared to asexual reproduction, what advantages does sexual reproduction provide the monarchs
Answers
Compared to asexual reproduction, sexual reproduction provides several advantages for monarchs. One major advantage is genetic diversity. Through sexual reproduction, offspring inherit genetic material from two parents, increasing the potential for variation within the population.
This can be beneficial for monarchs in adapting to changing environmental conditions and in avoiding genetic disorders that can occur with asexual reproduction. Additionally, sexual reproduction allows for the exchange of beneficial traits between individuals, further enhancing the monarch population's genetic diversity.
Finally, sexual reproduction can also result in stronger offspring, as any deleterious traits are less likely to be expressed due to the presence of dominant genes. Overall, sexual reproduction provides monarchs with significant advantages in terms of genetic diversity, adaptation, and fitness.
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Organic and inorganic Classify the following characteristics and examples of molecules depending on whether they are organic or inorganic Carbohydrates, lipids, proteins, and nucleic acids Contained in living organisms Sometimes contain carbon but do not contain C-H bonds Molecules made of a combination of elements Molecules that contain carbon and hydrogen bonds Water and table salts
Answers
Answer:
carbohydrates, lipids, proteins, and nucleic acids)
Explanation:
i looked it up
plz help me plz!!!!!!!!!!!!!!
Answers
Answer:
Form a hypothesis
Explanation: This should be the correct answer. Hope this helps :)
Which step in the digestive process represents a chemical change in food?
Answers
Answer:
digestion
Explanation:
Cluster of personality disorder : paranoid schizoid schizotypal I have a presentation on these topics so could you please help me that how should I start and what information should I put in presentation to make interesting
Answers
Answer:
see below
Explanation:
To start your presentation on Cluster A personality disorders, you could begin by providing an overview of what personality disorders are and how they are classified by the Diagnostic and Statistical Manual of Mental Disorders (DSM). You could then introduce the concept of Cluster A personality disorders, which include paranoid, schizoid, and schizotypal disorders.
Here are some key points that you could include in your presentation to make it interesting:
Define each of the three disorders and provide examples of their symptoms. For example, individuals with paranoid personality disorder may have a strong distrust and suspicion of others, while individuals with schizoid personality disorder may have difficulty forming close relationships and experience a lack of emotional expression.
Discuss the potential causes and risk factors of these disorders, such as genetics, brain chemistry, and environmental factors.
Discuss the impact of these disorders on individuals and their loved ones, as well as the difficulties they may face in their daily lives.
Discuss the treatment options available for these disorders, including therapy, medication, and support groups.
Provide real-life examples or case studies of individuals who have been diagnosed with one of these disorders, which can make the presentation more relatable and personal.
Include diagrams, images, videos or any other visual aids that can help to explain the information in an interesting way.
End the presentation by summarizing the key points and highlighting the importance of understanding and addressing these disorders.
It's important to remember that when creating a presentation it's always good to be prepared and practice your delivery, also to be mindful of the audience you will be presenting to and tailor the information accordingly.
this is the 3rd time i’m posting this someone please please help ive tried to solve this but i just can’t
Answers
Answer:
12 I think hope it helps
Explanation:
I
Determine which of the following is a courtship display.A. Tiger stripesB. Peacock feathersC. Dancing of beesD. Howler Monkey call
Answers
Answer: B
Explanation:To court potential mates, a peacock needs to rattle and shiver these train feathers in a certain way, producing a display of flickering feathers and distinctive noises. It has been known that this courtship dance signals the fitness of the males, as the extravagant display requires energy and muscular power to perform.
Describe the types of fission.
Answers
Answer:
Binary fission, Nuclear fission, and Multiple fission
Explanation:
Nuclear fission is when a neutron collides with a radioactive atom and breaks it in half, resulting in energy and radiation. BInary fission and Multiple fission has to do with biology.
Select the photosynthetic molecule that gives halobacteria its unique color.
a.) Caratenoids
b.)Thylakoids
c.)Bacteriochlorophylls
d.)Bacteriorhodopsin
Answers
Answer:
Bacteriorhodopsin
Explanation:
Purple Halobacterium species owe their color to bacteriorhodopsin, a light-sensitive protein.
Which term describes a protein that prevents an operon from being turned on in a prokaryotic cell?
A.
Enhancer
B.
Repressor
C.
Promoter
D.
Operator
Answers
Answer:
B. Repressor.
Explanation:
Hope this helps!
Answer:
The correct answer is B. Repressor.
In prokaryotic cells, an operon is a cluster of genes that are transcribed together as a single unit. The operon consists of a promoter, an operator, and the genes it controls. The operator is a DNA sequence located between the promoter and the genes.
A repressor protein binds to the operator region and prevents RNA polymerase from binding to the promoter and initiating transcription. By binding to the operator, the repressor blocks the expression of the genes in the operon, effectively turning off their transcription.
Therefore, the term that describes a protein that prevents an operon from being turned on in a prokaryotic cell is B. Repressor.
Hope this helps :]
Which relationship is an example of predation?
Answers
An example of predation is D) Chickens peck at the ground and eat many types of insects.
Predation is a type of biological interaction in which a predator feeds on its prey. In the above example, chickens are the predators that make insects their prey.
In order for an ecosystem to be healthy, predators are essential. There is more food available for the survival and success of healthy prey species after predators take away vulnerable prey, such as the young, old, sick, injured, or very young. Predators also aid in reducing the size of prey populations, which slows the spread of illness.
What are the types of biological interaction?
Mutualism, commensalism, competition, and predation are the four basic forms of two-way biological interactions between species found in ecological webs (which include herbivory and parasitism).
Therefore, D) Chickens pecking at the ground and eating many types of insects is an example of predation.
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If mitosis but not cytokinesis occurred in onion root tip cells, what would you expect to see on a slide of these root cells?
Answers
Answer: Well, cytokines happens after mitosis so you wouldn't see the daughter cells dividing yet.
Explanation: Onion root-tip cells divide once every 24 hours, or roughly two hours after sunrise, and go through a cell cycle that lasts for about 24 hours. Therefore, in order to harvest the greatest amount of proliferating cells, water-grown roots should only be removed at that time.
Part C
How would you change your model to show what happens when the other cell receives the protein?
Answers
To illustrate what happens when the other cell receives the protein, we can modify the model by introducing the concept of protein binding and cellular uptake.
Currently, the model focuses on the production and secretion of the protein by one cell. Here's how we can incorporate the process of protein uptake by another cell:
Model update: Add a receptor on the surface of the recipient cell. This receptor is specific to the protein being secreted by the donor cell. The receptor allows for binding and recognition of the protein.
Protein binding: Show the protein produced by the donor cell interacting with the receptor on the recipient cell's surface. This interaction represents the specific recognition and binding of the protein to its corresponding receptor.
Cellular uptake: Depict the internalization of the protein-receptor complex into the recipient cell. This step involves the engulfment of the protein-receptor complex by the recipient cell's membrane and subsequent transport into the cell's interior via endocytosis.
Intracellular processes: Highlight the intracellular trafficking of the protein within the recipient cell, such as transport to specific organelles or involvement in cellular processes. This step represents the utilization or processing of the protein within the recipient cell.
By incorporating these modifications into the model, we can visually represent the transfer of the protein from the donor cell to the recipient cell and showcase the subsequent cellular uptake and intracellular processes that occur upon receiving the protein.
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a)
Describe and explain four aseptic techniques used to prepare an uncontaminated culture.
[4 marks]
Answers
Barriers, patient equipment, environmental controls, and contact guidelines are the four aseptic techniques used to prepare an uncontaminated culture.
What are the common aseptic techniques?According to the Joint employment, there are four chief aspects of the aseptic technique: barriers, patient equipment and preparation, environmental sway, and contact guidelines. Each plays an important role in infection determent during a medical procedure.
Aseptic technique is the use of personal protective equipment (PPE). Respiratory hygiene and cough etiquette. Aseptic techniques span from simple practices such as using alcohol to purify the skin, to full surgical asepsis, which involves the use of sterile gowns,
So we can conclude that many of the microorganisms we will be waged with within the lab are known pathogens. Proper and appropriate aseptic technique are the guidelines for this.
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Pls help i dont understand :( + brainliest and 25 points
Answers
Answer:
its letter a or the first answer :)
Answer: I think it’s c
QUESTION:
Which of the following statements are true regarding passive transport?
Choose 2 answers:
ANSWER: CORRECT (SELECTED)
Charged ions cannot pass through a cell membrane via passive transport.
EXPLANATION:
Charged ions must utilize the help of membrane proteins and an input of energy in order to pass through a cell membrane.
ANSWER: CORRECT (SELECTED)
Carbon dioxide can pass through a cell membrane via passive transport.
EXPLANATION:
Carbon dioxide is a small, uncharged gas molecule that can freely pass through a cell membrane via passive transport (from an area of high concentration to low).
Answers
The two statements which are true regarding passive transport are:
A. Charged ions cannot pass through a cell membrane via passive transport.
C. Carbon dioxide can pass through a cell membrane via passive transport.
What is a cell membrane?A cell membrane is also known as plasma membrane and it can be defined as a semi-permeable cell organelle that is found in the body of a living organism.
The types of cell transport.In Science, there are two (2) main types of cell transport and these include the following:
Active transport.Passive transport.What is passive transport?Passive transport refers to the movement of molecules or substances across the cell membrane without the use or expenditure of chemical energy.
Based on scientific research and experiments, passive transport is highly dependent on the second law of thermodynamics for the movement of molecules or chemical substances across a cell membrane.
In this context, we can infer and logically deduce that the two statements which are true regarding passive transport are:
Charged ions cannot pass through a cell membrane through passive transport.Carbon dioxide is a chemical substance which can pass through a cell membrane through passive transport.Read more on passive transport here: https://brainly.com/question/18651606
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Complete Question:
Which of the following statements are true regarding passive transport?
Choose 2 answers:
A. Charged ions cannot pass through a cell membrane via passive transport.
B. Charged ions must utilize the help of membrane proteins and an input of energy in order to pass through a cell membrane.
C. Carbon dioxide can pass through a cell membrane via passive transport.
D. Carbon dioxide is a small, uncharged gas molecule that can freely pass through a cell membrane via passive transport (from an area of high concentration to low).
True | False 1. Vertebrates are animals without a backbone or bony skeleton, such as a starfish.
True | False 2. Omnivores are organisms that rely on plants and animals for survival.
True | False 3. A starfish belongs to a group of aquatic organisms that live in freshwater.
True | False 4. Echinoderms are a group of radially symmetric, spiny-skinned land animals.
True | False 5. A starfish is sensitive to temperature changes in its environment.
True | False 6. Starfish can prevail in both cold and warm marine habitats.
True | False 7. On the top of the central disc part of its body lies the mouth of a starfish.
True | False 8. Regeneration is a basic ability that a starfish demonstrates.
True | False 9. A starfish is a type of fish that feeds on decomposing matter.
True | False 10. These echinoderms typically have a central disc and usually five arms.
Answers
2. True
4. False because echinoderms are a group of marine organisms with spiny skin that is composed of all animals that have a radially symmetrical arrangement
5. True
6. True
7. True
8. False, because the right answer is: On the bottom of the central disc region of its body resides the mouth of a starfish.
9. True
10. False, because the right answer is: A starfish is a sort of animal that feeds on rotting materials.
How do animals fight pathogens?
Answers
Animals' bodies are protected from pathogenic organisms by physical barriers and their immune systems.
Outer coverings like skin, hair, feathers, and scales serve as physical barriers. The mucous membranes, tears, ear wax, mucus, and stomach acid are additional barriers.
All animals have a basic system in place to protect them against the infections to which they are vulnerable. Innate immunity, often known as natural immunity, is a two-part defense. A range of elements present in the humors, or bodily fluids, have a role in one kind of immunity known as humoral innate immunity.
Animals' first line of defense against external invaders including parasites, bacteria, viruses, yeast, fungus, mold, and other cancer-causing agents is their innate immune system.
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HELP DUE NOW 80 POINTS SCIENCE
Lab Report
Mutations
1. What was the purpose of the experiment?
Type your answer here:
2. How are genes related to organisms’ traits?
Type your answer here:
Experimental Methods
1. Describe the procedure that you followed to test the paper airplanes.
Type your answer here:
Data and Observations
1. Record your observations in the data table.
Type your answer here:
Table 1. Distance Travelled by Paper Airplanes Released from the Same Height
Airplane Qualitative distance travelled compared to airplane 1 (greater, shorter, equal)
Trial 1 Qualitative distance travelled compared to airplane 1 (greater, shorter, equal)
Trial 2 Qualitative distance travelled compared to airplane 1 (greater, shorter, equal)
Trial 3
2
3
4
Conclusions
1. What conclusions can you draw about how structural changes to genes (mutations) affect proteins and may result in harmful, beneficial, or neutral effects to the structure and function of the organism? Write an evidence-based claim that cites evidence from the results of the paper airplane test as a model.
Type your answer here:
2. Which fruit fly wing mutation(s) do you think is/are harmful to the fruit fly’s ability to fly? Explain by comparing the wing structure of the fly with the mutation to the wing structure of a fly without a mutation.
Type your answer here:
Answers
The purpose of the experiment was to investigate the effects of structural changes to genes, known as mutations, on proteins and their potential impact on the structure and function of organisms.
How to explain the informationGenes are segments of DNA that contain instructions for building proteins, which play a vital role in determining an organism's traits. Proteins are involved in various biological processes and are responsible for the development and functioning of different structures and functions within an organism.
Based on the results of the paper airplane test, structural changes to genes (mutations) can have varying effects on proteins and their impact on the structure and function of organisms. In this experiment, different qualitative distances traveled by the paper airplanes suggest that modifications in the design or structure of the airplanes resulted in variations in their performance.
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Which of the following processes add methane (CH4) to the atmosphere?
Answers
Answer:
livestock farming, landfills, and fossil fuel production such as coal mining and natural gas processing
Explanation:
HELP! NEED ASAP! 20 POINTS
Heart cells produce the protein cardiac myosin, which is critical in allowing for muscle contractions of the heart. Liver cells do not produce cardiac myosin.
Which statement explains this difference between heart cells and liver cells?
Heart and liver cells express different genes.
Heart cells rely on , R N A, , while liver cells rely on , D N A, .
Heart cells contain different genes from liver cells.
Liver cells destroyed the gene for myosin, but heart cells did not.
Answers
The most accurate statement that explains the difference between heart cells and liver cells in terms of their production of the protein cardiac myosin is "Heart and liver cells express different genes."
In multicellular organisms, different cell types have specific functions and characteristics that are determined by the genes they express. Genes are segments of DNA that contain the instructions for producing specific proteins. Each cell type expresses a unique set of genes that enable them to carry out their specialized functions.
In the case of heart cells and liver cells, they have different gene expression profiles. Heart cells specifically express the genes responsible for producing cardiac myosin, a protein essential for the contraction of the heart muscle. This allows the heart to effectively pump blood throughout the body.
On the other hand, liver cells do not express the genes for cardiac myosin production, as the liver has different functions unrelated to heart muscle contraction. The statement that heart cells contain different genes from liver cells is essentially expressing the same idea. Heart cells and liver cells have distinct gene expression patterns, leading to the production of different proteins and ultimately different cellular functions.
Both heart cells and liver cells utilize DNA as the genetic material that contains the genes responsible for protein production. RNA molecules are transcribed from DNA and play a crucial role in protein synthesis, but the distinction between heart and liver cells lies in the specific genes they express, not the reliance on different genetic materials.
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