Answers
Tight-fitting respirators must seal to the wearer’s face in order to provide expected protection. This includes disposable respirators (also called “filtering facepieces”). Therefore, fit testing is required in the US by the Occupational Safety and Health Administration (OSHA) before a user wears a mandatory respirator on the job, and must be assessed at least annually. In addition, fit tests should be performed:
Whenever a different size, style, model or make of respirator is used.
When any facial changes occur that could affect fit, such as significant weight fluctuation or dental work.
A good fit means the respirator will seal to your skin. A respirator can only work when air passes through the filter. Air will take the path of least resistance, so if the seal isn’t there, the air will go around rather than through the respirator – and therefore lessen the protection.
Safety glasses, hearing protection, face shields, hard hats and coveralls can all vie with a respirator for real estate on a person’s face, head or body. For instance, if a half face respirator doesn’t fit well (especially if it’s too large), it can overlap with glasses. The more that happens, the more fogging can potentially occur on glasses, and the more likely it is that they’ll interfere with the respirator’s seal.
Related Questions
in many single-celled organisms, reproduction occurs asexually by producing spores and sexually by producing?
Answers
In most of the single celled organisms like fungus, spyroghyra, etc, reproduction occurs asexually.
Tae formation of fossil fuels is a process that takes millions of years and
starts with energy from the Sun. The Sun contributes to the formation of
fossil fuels by -
A) generating winds, so humans use less fossil fuels
B) giving off heat, similar to burning fossil fuels
C) giving energy to the living things that become fossil fuels
D) heating up the Earth's core where fossil fuels form
Answers
Answer:
D
Explanation:
It was a long time ago when the crust was still molten lava. The ground basically buried the fossil fuels and that's why it makes imprints.
Muscles can contract even when there is no visible movement.
OA
True
ОВ.
False
Answers
Answer:
true
Explanation:
Joint movement may occur without any muscle contraction. Eccentric muscle contractions are referred to as muscle actions instead of a contraction since the muscle is shortening as opposed to lengthening.
with this info the answer is true
the overall chemical equation that describes photosynthesis is below. By analyzing this equation, which property of photosynthesis can be identified
Answers
what are the choices
Explanation:
photosynthesis is a way that plants make their own food.
Why is photosynthesis is essential to life on earth
Answers
Answer:
Without photosynthesis, the carbon cycle could not occur, life would not survive and plants would die.
Hope this helps!
What is diffusion? Why does oxygen always diffuse into an animal cell?
Answers
Answer:
Diffusion is the net movement of anything from a region of higher concentration to a region of lower concentration.
Oxygen molecules are small, and all cells need it for respiration to release energy from food molecules. Because there's a higher concentration of oxygen molecules outside the cell compared to the cell's cytoplasm, you'll see that oxygen diffuses into the cell along this concentration gradient.
Assignment debate on rainy season is better than dry season
Answers
This is an example of a debate on rainy season is better than dry season with the pros and cons of both seasons.
How to write a debate?Pro: Rainy Season is Better Than Dry Season
Rainy season is better than dry season because it provides much-needed water for plants and animals. It also helps to cool the air and reduce the risk of wildfires. Additionally, rainy season is a time for many plants to bloom, which can be a beautiful sight to behold.
Some of the benefits of rainy season:
Increased water supply: Rainy season provides much-needed water for plants and animals. This is especially important in areas that are prone to drought.
Cooler air: Rainy season helps to cool the air, which can be a relief from the heat of the summer.
Reduced risk of wildfires: Rainy season helps to reduce the risk of wildfires by keeping the ground moist.
Increased plant growth: Rainy season is a time for many plants to bloom. This can be a beautiful sight to behold and can also provide food for animals.
Con: Dry Season is Better Than Rainy Season
Dry season is better than rainy season because it is less likely to cause flooding and mudslides. It is also a time for many plants to go dormant, which helps to conserve water. Additionally, dry season is a good time for farmers to harvest crops.
Some of the benefits of dry season:
Less flooding and mudslides: Dry season is less likely to cause flooding and mudslides because there is less water in the ground.
Plants go dormant: Many plants go dormant during dry season, which helps to conserve water.
Good time for farming: Dry season is a good time for farmers to harvest crops because the ground is dry and hard.
Conclusion
Rainy season and dry season both have their own benefits and drawbacks. Ultimately, the best season depends on the individual's needs and preferences. If you are looking for a season with plenty of water and cooler temperatures, then rainy season is the better choice.
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Patrice is having a tough time developing confidence before she has to speak in front of a group of her colleagues. She asks her friend, Amelia, for help building confidence. What topic should Amelia recommend that Patrice study to BEST help her build confidence before future public speaking occurrences?
Phrasing
Mirroring
Haptics
Power poses
Answers
Amelia should recommend that Patrice study "Power poses" (option d) to best help build confidence before future public speaking occurrences.
Amelia should recommend that Patrice study "Power poses" as they are a proven method to boost confidence in public speaking. Power poses involve adopting postures that convey confidence and authority, which can have a positive psychological impact on the individual.
By practicing power poses before a presentation, Patrice can feel more self-assured and in control, leading to a better performance in front of her colleagues.
Although phrasing, mirroring, and haptics can be helpful in certain situations, power poses specifically target confidence-building and are most relevant to Patrice's concerns about her public speaking abilities.
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On the photomicrograph of bone below, identify all structures listed in the key to the left.
Answers
On the Structure of Compact Bone, the order of labelling are:
canaliculilamellacentral canallacunaWhat are these part known for?The photomicrograph shows a cross-section of a Haversian system, which is the basic unit of compact bone. The Haversian system consists of a central canal surrounded by concentric layers of bone called lamellae.
The osteocytes are located in lacunae that are arranged in rows along the Haversian canal. The canaliculi connect the lacunae to each other and to the Haversian canal. The central canal contains blood vessels and nerves that supply the osteocytes. The compact bone is arranged in columns called osteons.
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What type of macromolecule are enzymes?
There are no choices
Answers
Answer:
they are part of the protein macromolecules
Explanation:
hope this helps
brainliest?
B
Some Galápagos Islands
have mountains and
some do not. What does
this mean for the climates
of these islands?
These islands have different climates this
Mountains have nothing to do with climate
Answers
The Galápagos Islands have a distinctive island ecosystem because of environmental factors. Despite being close to the equator, the Galápagos Islands benefit from cool ocean currents.
What is the speciality of Galápagos Islands?The highest point in the Galapagos Islands, Wolf Volcano, is situated on Isabela Island. The mountain has a 5,600-foot peak (1,707 meters). It is named for a German geologist from the 19th century and is a shield volcano as well.
The steep mountainous terrain of the Galápagos Islands was shaped by several volcanic eruptions. Most people recognize the Galápagos for their wide variety of plant and animal species. Numerous species are endemic, which implies they can only be found in certain specific areas.
Being on the equator, the climate in the Galapagos Islands does not change significantly throughout the year. The Islands' climate is most appropriately categorized as subtropical.
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answer with explanation thank you
Answers
Part A:
The genes for feather color and texture are independently assorted, with light blue being more dominant than smooth and dark blue. It appears that the characteristics for wing colour (light blue vs. dark blue) and wing texture (smooth vs. ridged) are separately assorting based on the observed ratios of offspring with various combinations of wing colour and texture.
Part B:
One theory for why lactose tolerance evolved in humans is that increased selection during famines led some individuals to have a different food supply and increased fat consumption, which offered more resources for improved fitness. These two possibilities may serve as theories for the evolution of lactose tolerance in humans. One characteristic often seen in people with a history of dairy farming is the ability to digest lactose (the sugar contained in milk) from infancy.
Therefore, the correct options for Part A and Part B are B and B &D respectively.
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A group of researchers transformed E. coli to express
dsRNA that matched a transcription factor, eaf-1. They
then fed these E. coli to C. elegans worms. When the
researchers examined the C. elegans, they found that
they had fewer offspring and were smaller individuals,
with similar characteristics to C. elegans in which eaf-1
had been knocked out.
The students suggested several hypotheses based on
these observations about how RNAi worked:
1. The dsRNA inhibited gene transcription.
2. The dsRNA inhibited mRNA processing.
3. The dsRNA inhibited translation of mRNA into protein.
4. The dsRNA inhibited protein folding.
Mark this and return
The researchers then performed a series of experiments
to determine which hypothesis was correct. The C.
elegans were found to be transcribing eaf-1 into mRNA,
but not producing eaf-1 protein. When the students
directly injected C. elegans with dsRNA and tracked
tagged mRNA, they found the mature mRNA was
degraded in the cytoplasm, and ribosomes were not
binding to it. Which hypothesis is supported by these
observations?
Answers
The hypothesis that is supported by these observations is that the dsRNA inhibited the translation of mRNA into protein (third option).
What does the experiment reveal about dsRNA?In this experiment, the C. elegans worms were transcribing eaf-1 into mRNA but not producing the eaf-1 protein. This phenomenon shows that dsRNA inhibited the translation of mRNA into protein related to the action of E. coli on the worms.
This also explains why the worms affected by this bacteria had fewer offspring and the offspring were smaller.
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(08.01 MC)
A skunk living in the northern part of the United States is exposed to extreme cold and food shortages during the long winter months.
Based on the climate, what do you predict the skunk's innate response to these environmental factors will be?
A: Increase cellular respiration and ATP production
B:Estivate with a period of dormancy until the warmer weather arrives
C:Migrate to regions of warmer weather
D:Slow down its metabolic rate and lower its body temperature
Answers
Answer: cccccccc
Explanation:
Answer:
I think the answer should be B, because skunk doesn't migrate or hibernate, and A doesn't make sense because when animal facing temperature drop and food shortage they do not speed up metabolic process, instead they will slowdown the metabolic process and save as much energy as possible.
(if you know what the correct answer is please tell me I'm stuck with this question too:) )
Explanation:
In which cell is the water potential the least negative ,using a diagram of the xylem vessel from a vascular bundle in a root and four adjacent parenchyma cells
Answers
The water potential is the least negative in the xylem cell, which is located at the center of the vascular bundle. This is because the xylem cell is responsible for transporting water and minerals from the roots to the rest of the plant.
What is the xylem?The xylem is a type of plant tissue that is responsible for transporting water and dissolved minerals from the roots to the rest of the plant. It is composed of specialized cells called tracheids and vessel elements, which are connected end-to-end to form long tubes or vessels.
The xylem vessels are reinforced with lignin, which provides structural support and prevents collapse of the tubes under the pressure of water transport. The movement of water through the xylem is driven by transpiration, which is the loss of water from the leaves through tiny openings called stomata. As water evaporates from the leaves, it creates a negative pressure, or tension, that pulls water up from the roots and through the xylem.
The water potential is the least negative in the xylem cell, which is located at the center of the vascular bundle. This is because the xylem cell is responsible for transporting water and minerals from the roots to the rest of the plant, and therefore it must maintain a high water potential to facilitate this process. The adjacent parenchyma cells have lower water potential compared to the xylem cell, as they are involved in storage of nutrients and water, and do not play a major role in water transport.
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SOMEONE HELP ME PLEASE PLEASE JUST ZOOM UP ON THE PICTURE IT’S DUE TODAY PLEASE I NEED HELP
Answers
Answer:
A blue whale is not equipped to lift objects as it is a mammal adapted for living in the ocean. They are the largest animals on Earth and can weigh up to 200 tons, but they have no muscles in their fins to lift objects. They primarily use their fins for swimming and maneuvering in the water
Explanation:
For Forensics Please Help Thanks!
Estimate the approximate time of death for the following situations:
A body was found completely relaxed.
A body is found exhibiting rigor in the chest arms face and neck.
A body is found with most muscles relaxed except for the face.
A body is found with rigor in the legs but no rigor in the upper torso.
Answers
Answer:
C
Explanation:
A Body is found with most Muscles Relaxef except for the face... because your brain take sometimes to go dead after you have passed away or can be keeping alive if its added into a Jar of water
Explanation:
Which type of replication error would be most likely to result in gene
variation among organisms?
Answers
If a population grows larger then it’s evironmental carrying capacity then
Answers
Please explain why this answer is correct in your own words.
You must include these three words within your explanation: Law of Conservation Of Mass, Chemical Change, and Physical Change.
Answers
1.Ice melting is a physical change
2.Eggs cooking is a chemical change
3.Salt dissolving is a physical change
4.Wood burning is a chemical change
5. Fireworks exploding is a chemical change
Physical and Chemical changesA substance can change physically even when no new substance is created as a result of the change. It simply modifies the substance's outward attributes, such as its shape, size, texture, or phase (such as solid, liquid, or gas).
When a compound undergoes a chemical change, a new substance or substances with new chemical properties are created. Chemical bonds are broken and formed as a result of this process, which transforms one or more chemicals into one or more new substances. Chemical changes can release or absorb energy (heat, light, or sound), and they are frequently irreversible.
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describe any general differences you can see between the seedling that were planted at different depths
Answers
Answer:
differences
Explanation:
depending on the depth seedlings may take longer time to grow if it is at lower depths and vice versa
If you buy two plants of the same species that have the same-colored flowers, they must have different genotypes. True or false and why
Answers
Answer:
False
Explanation:
They are displaying the same phenotype. That doesnt mean they have the same genotype.
For example lets say the plants colours are purple (P)
one plant may have the geneotype of PP, (two dominant purple coloured alleles), the other plant may have the genotype Pp, (one dominant purple allele and one recessive allele for another colour lets say pink). Because purple (P) is the dominant allele they are both the same colour displayed but they have different genotypes.
The statement "two plants of the same species that have the same-colored flowers, they must have different genotypes" is definitely true.
What is Species?Species may be defined as collections of organisms that can significantly reproduce with one another in nature in order to produce fertile offspring. These individuals actually or potentially interbreed in nature. In this sense, a species is the biggest gene pool possible under natural conditions.
When two plants of the same species have the same-colored flowers, it means that they have the same phenotypes. But it does not mean that they possess similar genotypes.
For example, one plant may have the genotype of homozygous dominant (PP), and the other plant may have the genotype heterozygous dominant (Pp). This is both cases the genotypes are different and the phenotypes are the same.
Therefore, the statement "two plants of the same species that have the same-colored flowers, they must have different genotypes" is definitely true.
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New technology is important to the development of theories because it
allows for repeated experimentation.
enables the publication of new research.
replaces theories that are old and hard to test.
provides a new way to acquire new information.
Answers
New technology is important to the development of theories because it provides a new way to acquire new information. With new technology, researchers can collect data in new and more precise ways, which can lead to new insights and discoveries. It can also allow for the testing of existing theories in new ways or under different conditions, leading to a better understanding of the phenomena being studied. However, the importance of technology in developing theories does not necessarily mean that it replaces old theories or allows for repeated experimentation on its own. Theories are typically developed through a combination of empirical evidence, experimentation, and theoretical modeling, and the role of technology is to provide new tools and methods for gathering and analyzing data.
why would life outside of the earth be so important to us?
Answers
The only people with Rh negative blood are people who have inherited two recessive alleles for this trait. But some people who are colorblind have inherited only one recessive allele for this trait. Explain why these traits are different in terms of how many recessive alleles are needed to produce the recessive phenotype. Hint: Think about the above problem and sex chromosomes versus autosomes.
Answers
The difference is due to the inheritance pattern. Blood type needs two recessive alleles to express Rh-. Color-blindness needs only one.
What are the blood type and Color-blindness inheritance patterns?
⇒ Blood type is coded by a diallelic Rh gene that expresses complete dominance.
The allele Rh+ dominates over the allele Rh-.
Genotyopes and Phenotypes are as follows,
Individuals Rh+Rh+ express the possitive phenotypeIndividuals Rh+Rh- express the possitive phenotype Individuals Rh-Rh- express the negative phenotype.To express Rh-, a person must inherit two recessive alleles from their parents.
⇒ Color-blindness is an X-linked condition coded by a recessive allele.
As most sex-linked genes, it is transmitted together with the X chromosome.
The phenotype depends on the number of recessive alleles and the sex of the person.
Genotyopes and Phenotypes are as follows,
X⁺X⁺ women have normal sight.X⁻X⁻ women are completely color-blinded X⁺X⁻ women are partially color-blinded. X⁺Y Men are not color-blinded X⁻Y Men are color blinded.In this case, only one recessive allele is enough to express the affection.
In conclusion, Blood type needs two recessive alleles to express Rh-. Color-blindness needs only one recessive allele.
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4. The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell would be: which option is correct a) 1 mole of ATP b) 2 moles of ATP c) 3 moles of ATP d) 4 moles of ATP e) 6 moles of ATP
Answers
The ATP yield from 2 moles of mitochondrial NADH under aerobic conditions in a eukaryotic cell is approximately 4 moles of ATP.
During oxidative phosphorylation, each mole of NADH can generate around 2.5 to 3 moles of ATP. Therefore, for 2 moles of NADH, the total ATP production would be in the range of 4 to 6 moles of ATP. While the more precise estimate falls within the 4 to 6 moles range, the closest option provided is 4 moles of ATP. It is important to note that the exact ATP yield can vary depending on factors such as the efficiency of the electron transport chain and the specific conditions within the cell.Since there are 2 moles of mitochondrial NADH, the total ATP yield would be around 4 to 6 moles of ATP. However, the most accurate option among the given choices is 4 moles of ATP.
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PLEASE HELP ANYONE WILL MARK BRAINLIST!!!!!
The Law of Conservation of Mass can be stated as "mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction." 1
4. Use CER (claim evidence reasoning) to explain that the net reaction for photosynthesis is an example of the Law of Conservation of Mass. Be sure to compare the number of atoms of each type of chemica element in the reactants to the number in the products.
Claim: Photosynthesis (is / is not) an example of the Law of Conservation of Mass.
Evidence: (What did you see in the activity that helped you make this decision? Be sure to compare the number of atoms of each type of chemical element in the reactants to the number in the products.)
Reasoning:
Answers
Explanation:
The Law of Conservation of Mass can be stated as "mass is neither created nor destroyed in chemical reactions. In other words, the mass of any one element at the beginning of a reaction will equal the mass of that element at the end of the reaction."
what certain molecules are used for nadh in cellular respiration
Answers
NADH is produced during cellular respiration through the oxidation of glucose in glycolysis and the citric acid cycle.
Glucose is broken down into pyruvate in glycolysis, and NAD+ is reduced to NADH. Pyruvate is then converted to acetyl-CoA in the transition reaction, and NAD+ is again reduced to NADH. It produces one NADH molecule per pyruvate molecule.
In the citric acid cycle, acetyl-CoA is oxidized to carbon dioxide, and NAD+ is reduced to NADH. These molecules are used to produce ATP, the energy currency of the cell, through the electron transport chain.
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Which of the statements below best describes the term evaporation?
A. Particles loose enough energy to break attractive forces to form a solid.
B. Particles loose enough energy to break attractive forces to form a gas.
C. Particles gain enough energy to break attractive forces to form a gas.
D. Particles gain enough energy to break attractive forces to form a liquid.
Answers
during evaporation, particles are gaining energy from the heat. so with this information we can narrow it down to C) particles gain enough energy to break attract forces to form a gas
A patient's medical chart indicates that they are producing insufficient amounts of gastrin. What symptom would be expected?
a. Low blood cell count
b. difficulties digesting
c. irregular heart beat
d. trouble urinating
Answers
Answer: difficulties digesting!
Explanation: