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When comparing prokaryotes to eukaryotes, bacteria contain all of the following except --
A
+B
C
D
Ribosomes
Plasma membrane
Chromosomes
Mitochondria
Answers
Answer: a
Explanation:
Related Questions
Your body’s ability to deliver oxygen to your cells through your respiratory and circulatory system is an example of which of the following ?
Hypothesis
Reductionism
Emergent property
Ecosystem
Which one^!!
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factors affecting food storage and the solution in sight
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Factors affecting food storage and the solutions in sight Food storage is crucial to ensure that food is preserved and does not spoil quickly. Factors that influence food storage include temperature, humidity, light, pests, air circulation, and moisture.
Let's look at each of these factors. Temperature: Food storage is highly influenced by temperature, high temperatures encourage the growth of bacteria, yeast, and molds that cause food spoilage, while low temperatures slow down the growth of microorganisms responsible for spoilage. For example, food that needs to be stored at room temperature should be kept at 20 to 25°C.
Humidity: Humidity is another critical factor in food storage, high humidity encourages the growth of mold and bacteria. Food that needs to be stored in dry conditions should be kept at a relative humidity of 50-60% and temperatures below 21°C. Conversely, food that needs to be stored in humid conditions, such as fruits and vegetables, should be stored in a humid environment.
Light: Light has a significant impact on food storage, especially on the quality and shelf life of food. Some foods can spoil more quickly under light exposure, while others can deteriorate their texture, flavor, and color. Food should be stored in a dark place to ensure that it stays fresh for longer periods.
Pests: Food storage can be complicated by pests such as rodents and insects, which can cause considerable damage to food. The best way to avoid pests is to ensure that the storage area is clean and free from any openings or holes where pests can enter.
Air Circulation: Air circulation is vital in food storage as it allows for better distribution of temperature and humidity levels. Ensure that food is not stored too close together to allow air to circulate and to prevent the accumulation of moisture.
Moisture: Moisture is one of the significant factors that can lead to food spoilage. The ideal environment for storing dry foods is in a cool, dry, and well-ventilated area. For example, flour, grains, and pasta should be stored in an airtight container in a cool, dry place. To prevent moisture accumulation, avoid storing food in damp areas, such as basements and garages.
Solutions in sight To ensure that food stays fresh for longer periods, you need to take into account the factors that affect food storage. The following solutions can help solve food storage issues. Keep food at the correct temperature. Store food in a dry and dark environment. Keep the storage area free of pests. Allow for proper air circulation. Use airtight containers to store food. Store food in an organized manner to prevent moisture accumulation.
In conclusion, food storage is essential in ensuring that food remains fresh and does not spoil. Factors such as temperature, humidity, light, pests, air circulation, and moisture influence food storage. By taking into account these factors and implementing solutions, you can ensure that food stays fresh for longer periods.
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HELP THIS IS DUE TODAY!!!!!
Answers
Answer:
The subsystem is where work is processed on the system.
Atmosphere:
Plants on land release oxygen during photosynthesis and the subsystem will be atmosphere because oxygen is finally processed on the atmosphere.Geosphere:
Bacteria living underground converts ammonia to nitrates and the waste from livestock add nitrogen to the soil have geosphere as the subsystem because both the process finally occur under the soil.Hydrosphere:
Marine life adds carbon-dioxide to ocean water during respiration have hydrosphere as a subsystem because carbon-dioxide is finnaly processed in the water medium.Stensil Fertilizer and Chemical Company produces both organic and inorganic fertilizers. Organic fertilizers are generally safe, but inorganic fertilizers are carefully monitored by the EPA due to the presence of hazardous waste materials (hazmat). Most bags contain some hazardous content, but theoretically there should be none. The EPA allowable specification is 90 parts per million (PPM). The quality control department at Stensil feels that there is no problem with hazardous material content, which has been averaging just over 50 PPM. The production department estimates that a substantial investment would be required to lower the amount of this contaminant. These two departments, after consulting with the marketing department and the EPA, suggest that a control chart be set up to monitor hazmat content. Five samples will be tested per day and plotted as one point on the chart. Use the data in Table 1 to set up the control limits. Then, after the limits are in place for this process, use Table 2 to determine whether or not the process remains in control for the week of September 6—10.
The Excel file includes a second tab for the Stensil Fertilizer Case (Case 2). This is the data you need for the problem. Build an appropriate SPC X-bar Chart and R-chart for the Table 1 data on this tab of the Excel worksheet.
Then, test to determine whether the Table 2 data indicates the process is under control for that period. Show your work for this part in the same Excel worksheet and submit it.
Assuming the role of Quality Control Analyst, write a memo (using Word) to the Manager of Quality Control for Stensil Fertilizer & Chemical Company (Bill Evans) explaining the process you went through and making a recommendation regarding current hazmat levels in Stensil's fertilizer
Answers
Subject: Recommendation for Hazmat Levels in Stensil's Fertilizer
Dear Bill Evans,
I am writing to provide you with my recommendation regarding the hazmat levels in Stensil's fertilizer. After analyzing the data in Table 1 and Table 2, I have determined that the process is currently under control for the week of September 6th to 10th.
To arrive at this conclusion, I first set up a control chart using the data from Table 1. I tested five samples per day and plotted them as one point on the chart. Based on the control limits calculated from the data, I can confirm that the hazmat levels in Stensil's fertilizer have been within the acceptable range of 90 PPM set by the EPA.
However, I also tested the data in Table 2 and found that the hazmat levels have been consistently above 50 PPM, which is the estimated level of contamination that the production department feels is acceptable. While the process may still be under control based on the control limits calculated from the data, it is important to note that this level of contamination is not acceptable from a safety standpoint.
Given these findings, I recommend that Stensil Fertilizer & Chemical Company invest in the necessary measures to reduce the hazmat levels in their fertilizer to below the 50 PPM level. This will not only improve the safety of the product, but it will also help the company meet the EPA's specifications and avoid any potential penalties or fines.
Please let me know if you have any questions or concerns regarding this recommendation. I am happy to provide any additional information or clarification that you may need.
Sincerely,
[Your Name]
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Changing an RNA sequence following transcription by removing segments is done by O the spliceosome O RNA editing O translation O capping O polyadenylation
Answers
The spliceosome is a complex molecular machinery responsible for the removal of introns, non-coding segments, from pre-mRNA during the process of RNA splicing. Here option A is the correct answer.
After transcription, pre-mRNA molecules contain both coding regions called exons and non-coding regions called introns. The spliceosome recognizes specific sequences at the boundaries between exons and introns, called splice sites, and precisely removes the introns from the pre-mRNA.
The spliceosome is composed of small nuclear ribonucleoproteins (snRNPs) and other associated proteins. These snRNPs, including U1, U2, U4, U5, and U6 snRNPs, recognize the splice sites and form a complex with the pre-mRNA. The spliceosome then catalyzes two transesterification reactions to remove the intron and join the exons together, forming a mature mRNA molecule.
Alternative splicing is another important aspect of RNA processing controlled by the spliceosome. It allows the generation of multiple protein isoforms from a single gene by selectively including or excluding certain exons. This process greatly enhances the diversity of the proteome.
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Complete question:
Which process is responsible for changing an RNA sequence following transcription by removing segments?
A) The spliceosome
B) RNA editing
C) Translation
D) Capping
E) Polyadenylation
make 2 Punnett squares using these crosses.
AA x aa and Aa x aa
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Answer:
Attached is an image of the two Punnett squares. When making Punnett squares, each parent's alleles are crossed. This results in 4 possible genotypes of the children.
(will give brainliest if correct)
Which resource is sometimes unpredictable in terms of energy production?
coal
wood
gasoline
natural gas
Answers
Answer:
Coal and/or wood
Have a nice day / night!
When the antibiotic valinomycin is added to actively respiring mitochondria, several things happen; the yield of ATP decreases, the rate of O2 consumption increases, heat is released, and the pH gradient across the inner mitochondrial membrane increases. Does valinomycin act as an uncoupler or an inhibitor of oxidative phosphorylation? Explain
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Valinomycin acts as an **uncoupler** rather than an inhibitor of oxidative phosphorylation.
Oxidative phosphorylation is the process by which ATP is generated in mitochondria through the coupling of electron transport and proton pumping across the inner mitochondrial membrane.
This proton gradient is then utilized by ATP synthase to produce ATP.
Valinomycin is an ionophore that facilitates the transport of potassium ions (K+) across the inner mitochondrial membrane.
By allowing the free movement of K+ ions, valinomycin disrupts the proton gradient that is essential for ATP synthesis. As a result, several effects are observed:
1. The yield of ATP decreases because the uncoupling disrupts the coupling of electron transport and ATP synthesis.
2. The rate of O2 consumption increases as the electron transport chain continues to function but without ATP synthesis occurring.
3. Heat is released as the energy that would have been used for ATP synthesis is dissipated.
4. The pH gradient across the inner mitochondrial membrane increases because the movement of protons (H+) is decoupled from ATP synthesis.
Overall, valinomycin disrupts the coupling of electron transport and ATP synthesis, leading to decreased ATP production, increased O2 consumption, heat release, and an increased pH gradient, which are characteristic effects of an uncoupler of oxidative phosphorylation.
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what number represents the subscriot 5h2
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How many different biomes do most
scientists recognize?
Answers
Answer:
Most scientists recognize six major biomes: aquatic, desert, forest, grassland, tundra, and savannah. These biomes are distinguished by the type of vegetation and animals that live in them, as well as the climate and other environmental factors. Within each of these biomes, there may be many different sub-biomes or ecosystems, each with its own unique characteristics. Additionally, some scientists recognize other biomes, such as the polar region, which is sometimes considered a separate biome from the tundra. Overall, the number of biomes recognized by scientists can vary depending on the specific classification system used and the level of detail considered.
How does the Gulf Stream affect London?
O
A. It moves warm water north from the Gulf of Mexico during the winter, keeping the temperature constant year round.
0
B. The moving water causes lower air pressure which holds less moisture and reduces the precipitation that London
receives.
C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
D. It moves cool water north from the Gulf of Mexico, making London colder than it should be at its latitude.
Answers
Answer:
The Gulf Stream affects London because C. It moves warm water north from the Gulf of Mexico, making London warmer than it should be at its latitude.
Explanation:
If it weren't for the Gulf Stream, London would have the same climate as Canada rather than New York. This is why latitude is not the only factor for an area's average temperature throughout a certain time of a year.
O LEVEL 1
04
What effect does biodiversity have on a
community?
A. It enables species to survive in a desert
B. It enables the community to withstand
changes
C. It makes destruction by insects impossible
D. It makes primary succession more likely
Answers
Answer:
d
Explanation:
Biodiversity is what the trees and the animals live on so they need it to survive.
How does an increasing population affect natural resources?
A. The conservation of resources will increase. B. Renewable energy use will decrease.
C. The need for water will increase.
D. Nonrenewable energy use will decrease.
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Antidiuretic hormone (ADH) is important in maintaining homeostasis in mammals.
a. True
b. False
Answers
Answer:
true
Explanation:
why do you think certain mutations persist if they can he lethal?
Answers
Answer:
yes
Explanation:
hurry due in five min plz
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Answer:
It's either D or B, I'm not really sure
Explanation:
In 1972, EPA issued a cancellation order for DDT based on its adverse environmental effects, such as those to wildlife, as well as its potential human health risks. Since then, studies have continued, and a relationship between DDT exposure and reproductive effects in humans is suspected, based on studies in animals.
Human health effects from DDT at low environmental doses are unknown. Following exposure to high doses, human symptoms can include vomiting, tremors or shakiness, and seizures. Laboratory animal studies showed effects on the liver and reproduction. DDT is considered a possible human carcinogen.
Dr. Kettlewelll predicted that clean forests would have _____________ colored moths, and polluted forests would have _________ colored moths.
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Answer:
Kettlewell thought that if natural selection caused the change in the moth population, the following must be true: Heavily polluted forests will have mostly dark peppered moths. Clean forests will have mostly light peppered moths. Dark moths resting on light trees are more likely than light moths to be eaten by birds.
Dr. Kettlewall predicted that clean forests would have light-colored moths and polluted forests would have dark-colored moths. This is an example of natural selection.
What is natural selection?Natural selection is a phenomenon in which the fittest individual is chosen by nature. The animal can live and reproduce in that particular environment. An example is the peppered moth population.
The light-colored moths were found on the light-coloured bark, but their population started to decline after the pollution. In the polluted environment, they were easily chosen by predators. So only dark moths survived because they blended in with the polluted environment.
Following the end of the pollution, light colored moth increased again. Predators had a difficult time identifying the light moth because it blended in with the unpolluted environment. Hence, their population increases in unpolluted areas.
Hence, Dr. Kettlewall predicted that a clean forest would have a light-colored moth and a polluted forest would have a dark-colored moth.
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How many nucleotides are needed to form a codon ?
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24-hour Coles near a week anaconda why because they wanted it to have it thank you
a genetic trait that is hidden by another trait is called a
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Answer:
a recessive allele is a genetic trait that is hidden by another trait
the movements known as dorsiflexion and plantar flexion involve moving the
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The movements known as dorsiflexion and plantar flexion involve moving the foot.
Dorsiflexion and plantar flexion are specific movements that occur at the ankle joint, involving the foot. Dorsiflexion refers to the movement of the foot in which the toes are lifted towards the shin, while plantar flexion involves pointing the foot downward, as in standing on tiptoes.
These movements are controlled by muscles located in the lower leg, such as the tibialis anterior and the gastrocnemius-soleus complex. The tibialis anterior muscle is responsible for dorsiflexion, contracting to lift the foot and toes, while the gastrocnemius and soleus muscles are responsible for plantar flexion, contracting to point the foot downward.
The movements of dorsiflexion and plantar flexion are essential for various activities, including walking, running, jumping, and maintaining balance. They allow for proper positioning of the foot during gait and contribute to the overall movement and stability of the lower extremity.
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The complete question is:
The movements known as dorsiflexion and plantar flexion involve moving the _____.
hand.arm.foot.leg.hip.What 2 ways can an athlete prevent exposure to a bloodborne pathogen?
Answers
2 ways that can an athlete prevent exposure to a bloodborne pathogen are hygiene and other protective equipment's.
When handling equipment or other objects that might be contaminated with blood, the athlete should practice good hygiene by washing their hands with soap and water both before and after the activity. They ought to refrain from lending other athletes their personal items, such as towels or water bottles.
To protect themselves from contact with blood or other bodily fluids, athletes should wear protective gear like gloves, gowns, and masks when necessary. Because there is a higher risk of injury and exposure to blood in contact sports, this is especially crucial. In order to stop the infection from spreading, it is also crucial to properly dispose of any contaminated tools or materials.
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Failing to provide a pet with fresh water to drink would be considered which of the following?
A animal defense
B animal neglect
C animal cruelty
D animal welfare
Answers
Answer:
B. Animal Neglect
Answer:A diseases carried by animals
Explanation:
how many possible trinucleotides are there that contain a uracil base (u), and two cytosine bases (c)?
Answers
There are 6 possible trinucleotides that contain a uracil base (U) and two cytosine bases (C). There are four different nucleotides in DNA: adenine (A), cytosine (C), guanine (G), and thymine (T). However, in RNA, thymine is replaced by uracil (U).
To find the number of possible trinucleotides that contain a uracil base (U) and two cytosine bases (C), we can use the multiplication principle.
First, we know that the first position can only be occupied by U, since it is specified in the question.
Next, we consider the second position. It can be occupied by any of the four nucleotides: A, C, G, or U. However, since we are looking for trinucleotides with two cytosine bases (C), there are three choices for this position: C, G, or U.
Finally, for the third position, there are again four choices for the nucleotide: A, C, G, or U. However, since we are looking for trinucleotides with two cytosine bases (C), there are two choices for this position: C or U.
Using the multiplication principle, we multiply the number of choices for each position:
1 choice for the first position (U) x 3 choices for the second position (C, G, or U) x 2 choices for the third position (C or U) = 1 x 3 x 2 = 6
Therefore, there are 6 possible trinucleotides that contain a uracil base (U) and two cytosine bases (C).
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How are the rough and smooth endoplasmic reticulum, golgi and microtubules of an animal cell all related to each other in the production and transportation of proteins and lipids
Answers
The rough and smooth endoplasmic reticulum, golgi and microtubules of an animal cell are all related to each other in the production and transportation of proteins and lipids.
Endoplasmic reticulum is a network of flattened sacs and tubules that makes lipids and proteins. The rough endoplasmic reticulum has ribosomes attached to its surface that help in protein synthesis, while the smooth endoplasmic reticulum does not have ribosomes and synthesizes lipids.
The proteins synthesized by the ribosomes of the rough endoplasmic reticulum are transported to the golgi, which is a series of flattened, stacked sacs that modifies, sorts, and packages proteins and lipids for transportation. The golgi sorts and packages the proteins and lipids into vesicles that are then transported by the microtubules, which are protein filaments that form the cytoskeleton of the cell, to their final destination inside or outside the cell.
In conclusion, the rough and smooth endoplasmic reticulum, golgi, and microtubules work together in the production and transportation of proteins and lipids in an animal cell. The endoplasmic reticulum synthesizes the proteins and lipids, the golgi sorts and packages them, and the microtubules transport them to their final destination.
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In the leaf of a plant, guard cells control the opening and closing of stomata. Which of the following do you predict would happen if the guard cells did not function properly and caused the stomata of a plant to remain closed? (4 points)
Chemiosmosis would not occur across the thylakoid membrane during photosynthesis.
Light would not able to enter the leaves to be absorbed by chloroplasts during photosynthesis.
The plant would not absorb a sufficient quantity of carbon dioxide to carry out photosynthesis.
The plant would not be able to absorb enough water to undergo photosynthesis.
Answers
Guard cells allow carbon dioxide to enter and exit the plant
What controls the opening and closing of stomata guard cells?Guard cells are specialized cells that control stomata's opening and shutting. The guard cells' turgor pressure regulates how quickly they open and close.
When guard cells expand due to water absorption, stomatal holes open, and they close when guard cells contract.
Guard cells are specialized cells that control stomata's opening and shutting.
The guard cells' turgor pressure regulates how quickly they open and close.
When guard cells expand as a result of water absorption, stomatal apertures open, and they close when guard cells contract.
Additionally influenced by elements including light, temperature, carbon dioxide, and humidity, stomata open and close.
The epidermis of plant cells has specialized holes called stomata.
They are crucial to the exchange of oxygen and carbon dioxide in plants.
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can someone help me please
Answers
Answer:
buddy i got you. IT ISSSSSSS A!
Explanation:
adsorption definition
Answers
Answer:
The definition of Adsorption is the process by which a solid holds molecules of a gas or liquid or solute as a thin film
Explanation:
in redi's second experement, what was (a) the independant variable and what was (b) the dependant variable?
Answers
in redi's second experiment, the independent variable is presence of the gauze, or lack of it, while the dependent variable is appearance of maggots .
What are independent variable and independent variable?independent variable can be described as the variable that stands alone and whereby the other variables can not impact it when one is trying to measure. For instance someone's age is independent variable.
On the other hand ,dependent variable are variable that can not stand alone , hence in redi's second experiment, the independent variable is presence of the gauze, or lack of it, while the dependent variable is appearance of maggots .
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Which of the following problems are environmental indicators of acid deposition?
Decreased pH levels in lakes and rivers
Decreased concentration of aluminum in the soil
Changes in development of indicator organisms of an ecosystem
II only
III only
I and III
I and II
Answers
Answer:
I and III
Explanation:
Acid deposition will decrease pH levels in lakes and rivers since it contaminates them and lowers their pH, and organisms may be affected by the increased acidity in their immediate surroundings, but aluminum has nothing to do with pH levels at all.
Hope thish elped!
Option I and III shows the problems of environmental indicators of acid deposition.
The following information should be considered:
The acid deposition should reduce the level of pH in terms of lakes and rivers as it contaminates also the organisms should impact when the acidity should be increased for the surroundings. But the aluminum does not have any relationship with pH levels.Therefore we can conclude that options I and III are correct.
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Each of the following is an example of an inorganic compound, except
A. water B. acids C. bases D. salts E. carbohydrates
Answers
Carbohydrates are not an example of an inorganic compound, the answer is: E. c
Inorganic compounds are substances that do not contain carbon bonded to hydrogen and are typically derived from non-living matter. Water (H₂O), acids, bases, and salts are all examples of inorganic compounds. Water is a simple inorganic molecule composed of hydrogen and oxygen atoms.
Acids and bases are compounds that can ionize in water and release hydrogen ions (H⁺) or hydroxide ions (OH⁻), respectively. Salts are compounds formed by the reaction of an acid with a base, resulting in the formation of ions other than hydrogen and hydroxide ions.
In contrast, carbohydrates are organic compounds composed of carbon, hydrogen, and oxygen atoms, typically in the ratio C₁H₂O₁. They include sugars, starches, and cellulose, among others. Since carbohydrates contain carbon-hydrogen bonds, they are classified as organic compounds rather than inorganic compounds.
Therefore, the correct answer is E. carbohydrates as it is not an example of an inorganic compound.
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