The ozone destroying pollutants primarily comes from air conditioner coolants, refrigerator coolant, aerosol spray, and plastic foam. *
true
false
Answers
Answer:
true
Explanation:
Chlorofluorocarbons or CFCs are the main cause of ozone layer depletion. These are released by solvents, spray aerosols, refrigerators, air-conditioners, etc. The molecules of chlorofluorocarbons in the stratosphere are broken down by the ultraviolet radiations and release chlorine atoms.
Related Questions
if the plasma membrane of a human muscle cell is subjected to detergents and enzymatic hydrolysis, which monomeric components will be found in the resulting solution?
Answers
Detergents and enzymatic hydrolysis of a human muscle cell's plasma membrane provide monomeric components.
Solubilizing lipids and proteins with detergents breaks the plasma membrane's lipid bilayer. Micelles—small spherical entities with hydrophobic tails and hydrophilic heads—act. Detergents can release integral membrane proteins and lipids into solution. Enzymatic hydrolysis involves enzymes breaking down macromolecules. Enzymes target plasma membrane components. Phospholipases hydrolyze phospholipids, releasing fatty acids and glycerol. Proteins can be broken down by proteases. Glycosidases release monosaccharides from glycolipids and glycoproteins.
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place the following events of skeletal muscle contraction and relaxation in the correct order. 1. ca2 binds to troponin; tropomyosin moves, exposing the active sites of actin. 2. the motor neuron stops releasing ach, and acetylcholinesterase degrades the ach in the synaptic cleft. 3. actin and myosin bind, and myosin undergoes a power stroke. atp detaches actin and myosin, and the cycle repeats, resulting in contraction of the muscle fiber. 4. acetylcholine (ach) triggers an end-plate potential in the motor end plate. 5. the cytosolic concentration of ca2 returns to the resting level, the active sites of actin are blocked, and the muscle fiber relaxes. 6. an action potential in the sarcolemma travels down the t-tubules. 7. ca2 are released from the sarcoplasmic reticulum into the cytosol.
Answers
The events of skeletal muscle contraction and relaxation are as follows:
1. An action potential in the sarcolemma travels down the t-tubules.⇒2. Ca² are released from the sarcoplasmic reticulum into the cytosol.⇒3. Ca² binds to troponin; tropomyosin moves, exposing the active sites of actin.⇒4. Actin and myosin bind, and myosin undergoes a power stroke. ATP detaches actin and myosin, and the cycle repeats, resulting in the contraction of the muscle fiber.⇒5. The cytosolic concentration of Ca² returns to the resting level, the active sites of actin are blocked, and the muscle fiber relaxes.⇒6. Acetylcholine (ACh) triggers an end-plate potential in the motor end plate.⇒7. The motor neuron stops releasing ACh, and acetylcholinesterase degrades the ACh in the synaptic cleft.What is troponin?Troponin is a protein that regulates muscle contraction by controlling the interaction of actin and myosin. It is located on the tropomyosin molecule and, in conjunction with calcium ions, influences the structure of the tropomyosin filament. Tropomyosin is a filamentous protein that serves as a molecular scaffold, forming a structure that binds to the F-actin backbone and controls the accessibility of the actin-binding sites.
Keywords:contraction;sarcolemma;myosin;tropomysin;acetycholine
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Help plz and can you plz use the key terms
Answers
Answer:
srry im not in this unit yet
Shelly works as a call-center employee from inside her home. the company she works for does not mind that she works from home because she is so good at her job. her professionalism hardly varies from one call to the next. one day, however, she learned that her mother had died. rather than taking off work, she went through the work day as routine. a few days later, a customer complained to the firm that she did not like shelly's attitude when she contacted her with questions about a product. she felt that shelly was brusque and rude. the company investigated the matter and found that shelly had lost her patience with the customer over the phone. however, when they found out about her situation, they only gave her a verbal warning.
Refer to scenario 13.1. a. the fact that shelly's job has been outsourced to her home is known as
Which characteristic of services caused a problem for the firm in this scenario? a. Intanglbilty b. heterogeneity c. inseparability d. low customer contact e. perishability Hide Feedback Incorrect
Answers
a. Telecommuting or remote work is the term used to describe Shelly's job being outsourced to her home.
b. The characteristic of heterogeneity caused a problem for the firm in this scenario. Shelly's professionalism hardly varied from one call to the next, but her behavior changed after the personal loss. This inconsistency in service delivery led to a customer complaint. The correct answer is option b. heterogeneity.
a. The fact that Shelly's job has been outsourced to her home is known as telecommuting or remote work.
b. The characteristic of services that caused a problem for the firm in this scenario is the heterogeneity, which refers to the variability in the quality of services due to differences in the skills, knowledge, and attitudes of the service providers.
In this case, Shelly's behavior towards the customer was inconsistent with her usual professionalism, which led to the customer's complaint. The company had to investigate the matter and give Shelly a verbal warning, which could have been avoided if her behavior had been more consistent.
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Match the items
a. States that all matter is evenly distributed throughout the universe, in the same amounts, moving in the same directions, and in
the same ways
b. Thought to have started the "Big Bang".
c. Hubble's law tells us this is happening to the universe.
d. Formed the stars, galaxies, and solar system.
e. Known as the father of the Big Bang Theory.
f. Responsible for the general theory of relativity.
1. Einstein
a
2. Gravity
rd
<
. Hubble
a
<
>
Expanding
a
Explosion
a
Cosmological Principle
Answers
The terms for each description are:
Edwin Hubble: known as the father of the Big Bang Theory.Albert Einstein: responsible for the general theory of relativity.How to match the terms with each description?In this exercise, you're required to match the appropriate terms with each description as follows:
Cosmological Principle: states that all matter is evenly distributed throughout the universe, in the same amounts, moving in the same directions, and in the same ways.
Gravity: thought to have started the "Big Bang".
Expansion: Hubble's law tells us this is happening to the universe.
Explosion: formed the stars, galaxies, and solar system.
Edwin Hubble: he is known as the father of the Big Bang Theory.
Albert Einstein: he is responsible for the general theory of relativity.
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Which of the following genotypes is homozygous dominant?
Answers
Answer:
A,B and AB
Explanation:
Firstly homozygous are dominant in RR
Then heterogeneous are recessive in r
IF
RR breeds with rr
RR. Rr
f1 generation=Rr
Then
f1 crossing
Rr. and. Rr
f2 generation= RR,Rr,rr
In the Arizona desert, a fossilised specimen of this native trees was discovered. This species is no longer alive. Explain the current environment and how it differs from the one the tree lived in.
I Need Yalls Help <3
Please Help Me Out
Answers
The Arizona desert is a hot and arid region, characterized by low annual rainfall, high temperatures, and sparse vegetation. It is home to a variety of plant and animal species that are specially adapted to survive in these harsh conditions. The desert is also known for its geological formations, including canyons, mesas, and sand dunes.
Over the course of geological time, the climate and environment of the Arizona desert have changed significantly. For example, during the Pleistocene epoch (2.6 million to 11,700 years ago), the region was much cooler and wetter than it is today. This allowed for the growth of vegetation that is not present in the modern desert, including grasslands, savannas, and even forests in some areas.
It is possible that the fossilized tree specimen discovered in the Arizona desert lived during a period when the climate and environment were different from what they are today. By studying the tree's morphology and anatomy, scientists may be able to infer information about the environmental conditions that existed when the tree was alive. For example, the presence of growth rings or other indicators of growth rate can provide clues about the amount of rainfall and temperature fluctuations that the tree experienced during its lifetime. By comparing this information to current climate data, scientists can gain insights into how the environment of the region has changed over time.
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The percentage of cells in each phase or stage can be used as a measure of how long each phase lasts. The cell cycle in onion cells takes 1,440 minutes (24 hours), so if you take the percentage of cells in each phase and convert it to a decimal figure by dividing by 100 and then multiply the amount of time the cell cycle takes, you can calculate the approximate time each stage or phase of the cell cycle lasts. Formula: Duration of phase (in minutes) = percentage/100 X 1,440 minutes
Answers
The formula for calculating the duration of each phase or stage of the cell cycle in onion cells is as follows: Duration of phase (in minutes) = (percentage/100) × 1,440 minutes.
The cell cycle in onion cells takes 1,440 minutes or 24 hours. By determining the percentage of cells in each phase and converting it to a decimal by dividing by 100, we can calculate the proportion of time each phase or stage lasts within the total cell cycle. Multiplying this proportion by the total duration of the cell cycle (1,440 minutes) gives us an estimate of the time each phase or stage lasts. This formula allows us to approximate the duration of different phases of the cell cycle based on the percentage of cells observed in each phase.
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When the teacher was handing out this test, you noticed that your respiration rate and heartbeat increased, your palms got sweaty, and your hand shook a little. Your pretest behaviors were triggered by the __________ nervous system. Upon completion of the exam, your body returned to its normal state by way of the __________ nervous system.
Answers
Answer: sympathetic nervous system & parasympathetic nervous system
A scientist analyzed a segment of DNA from a human chromosome and found that the percentage of cytosine molecular bases (C) was 32%. What percentage of adenine would be found in this DNA segment?
Answers
Answer:
16%
Explanation:
in an anti-nuclear antibody indirect immunofluorescence test, a sample of patient serum shows a positive, speckled pattern. which would be the most appropriate additional test to perform?
Answers
In the case of a positive, speckled pattern in an anti-nuclear antibody (ANA) indirect immunofluorescence test, the most appropriate additional test to perform would be an ENA (Extractable Nuclear Antigens) panel.
The ENA panel is a set of specific tests that identify autoantibodies targeting various extractable nuclear antigens, such as Sm, RNP, Ro, La, Scl-70, and Jo-1. These antigens are associated with different autoimmune diseases, including systemic lupus erythematosus (SLE), Sjögren's syndrome, and systemic sclerosis.
The reason to perform the ENA panel is to provide further insight into the possible underlying autoimmune disease causing the positive, speckled pattern in the ANA test. By identifying the specific autoantibodies, it can help pinpoint the most likely diagnosis and guide the clinical management for the patient.
It is important to note that a positive ANA test is not diagnostic on its own but is an essential screening tool for detecting potential autoimmune diseases. The ENA panel is a valuable next step to narrow down the possible causes and provide more targeted information for healthcare providers.
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What function(s) does mitosis fulfill for multicellular organisms?
a. Growth
b. Sexual reproduction
c. Repair
d. Protein synthesis
e. Respiration
Answers
Mitosis is vital for multicellular organisms as it plays an essential role in their growth and maintenance.
Mitosis is a process of cell division that results in two daughter cells each having the same number and kind of chromosomes as the parent nucleus, typical of ordinary tissue growth. Mitosis plays a crucial role in the development and maintenance of multicellular organisms. One of the primary functions of mitosis is growth, which enables the organism to increase in size. During mitosis, cells divide and multiply, which helps in the growth and development of various organs and tissues. Moreover, mitosis also facilitates the repair of damaged or injured tissues, which is crucial for the survival of multicellular organisms. It is essential for the replacement of old or damaged cells with new ones, ensuring that the organism functions efficiently. Sexual reproduction, protein synthesis, and respiration are not functions of mitosis.
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The flexor carpi ______ (medial) and the flexor carpi ______ (lateral) are the major flexors of the wrist.
Answers
The flexor carpi ulnaris is the major medial flexor of the wrist, while the flexor carpi radialis is the major lateral flexor.
The flexor carpi ulnaris is a muscle located on the medial side of the forearm. It originates from the medial epicondyle of the humerus and the olecranon process of the ulna. From there, it runs along the forearm and inserts into the pisiform bone and the hamate bone of the hand.
The flexor carpi ulnaris is responsible for flexing and adducting the wrist, meaning it bends the wrist downward and toward the body's midline. On the other hand, the flexor carpi radialis is situated on the lateral side of the forearm.
It arises from the medial epicondyle of the humerus as well, but it extends further down the forearm and inserts into the base of the second metacarpal bone in the hand. The flexor carpi radialis plays a crucial role in wrist flexion and abduction, which involves bending the wrist downward and away from the body's midline.
Together, these two muscles, the flexor carpi ulnaris and the flexor carpi radialis, work synergistically to facilitate the flexion and movement of the wrist.
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carbohydrates in size from smallest to largest?
Answers
Answer:
The rundown the effectively shows sugars in size from smallest to largest is, monosaccharide, disaccharide, polysaccharide. A monosaccharide is a basic sugar and is the basic unit of carbohydrates.
Explanation:
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is the answer largestjshshshsj
which joints allow the arytenoid cartilages to rock anteriorly,posteriorly, medially, and laterally, enabling the vocal folds to abduct?
Answers
The cricoarytenoid joints are the only joints in the larynx that allow the arytenoid cartilages to move anteriorly, posteriorly, medially, and laterally.
These movements enable the vocal folds to abduct, which is the process of separating the vocal folds from each other to produce a wider opening for air to pass through.
The cricoarytenoid joints are the only joints in the larynx that allow for this motion, meaning they are essential in enabling the vocal folds to abduct.
This motion of the arytenoid cartilages is crucial for the production of speech, as the abduction of the vocal folds produces changes in the vocal tract that allow for the production of different sounds. Therefore, the cricoarytenoid joints are essential in allowing us to produce the range of sounds necessary for normal speech.
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The lesson question for this lab is “What is the effect of the type of food available on the frequency of different types of bird beaks?” The the lab procedure you just studied should help you address this question. Will it? Explain.
Answers
Answer:
The procedure shows two different food situations. However, the initial populations of birds are the same. Therefore, at the end, you can compare the next generation for each food situation and measure the effect of the food change. If the food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time. The independent variable of the lab is the type of food that is available to the birds. The dependent variable of the lab is the frequency of each type-size and shape-of beaks
Explanation:
Answer:
The procedure shows two different food situations. However, the initial populations of birds are the same. Therefore, at the end, you can compare the next generation for each food situation and measure the effect of the food change. If the food type changes in a given environment, then the amount of each type of bird beak will changes as birds with beaks more suited to the available food will consume more successfully over time. The independent variable of the lab is the type of food that is available to the birds. The dependent variable of the lab is the frequency of each type-size and shape-of beaks
Explanation:
person above
8. What makes phrenology a pseudoscience is the fact that …
a. none of it is true
b. We are focusing on cases that confirm our beliefs about it and not those that disconfirm our beliefs
c. most of it can be explained as a placebo effect
d. all of the above
e. none of the above
Answers
None of the facts supports phrenology and pseudoscience the correct answer is none of the above, option e is correct.
Phrenology is considered a pseudoscience not because none of it is true, but because its fundamental principles and methods have been discredited and are not supported by scientific evidence. Phrenology was a popular belief in the 19th century that claimed personality traits and mental abilities could be determined by examining the shape and size of bumps on the skull.
However, modern scientific understanding of the brain has shown that specific mental functions are not localized to specific areas of the skull as suggested by phrenology. The reason phrenology is considered a pseudoscience is that it lacks empirical evidence and scientific validity. Its claims have not been supported by rigorous experimentation or replicated findings.
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WILL MARK BRAINLIEST
Part A: Design a food chain with four trophic levels, and identify the organism in each level. What happens to energy as it travels from the bottom up? (3 points)
Part B: Can humans ever occupy the lowest, or first, trophic level? Why or why not? (1 point)
Answers
Answer:
Part A: Primary producer - plants (ex: sunflowers), Primary consumers- herbivores(ex: rabbits), Secondary consumers - omnivores and carnivores (ex: snake), tertiary consumers - omnivores and carnivores (ex: foxes), A-p-e-x predators - can be omnivores or carnivores (ex: coyote)
Energy decreases as it travels from the bottom of an energy pyramid, every time energy passes from one tropic to another, the predator only gets 10% of the total energy, or the stored energy, the rest of the energy has already been used up.
Part B: Humans cannot ever occupy the lowest or first tropic level, because the first tropic level is for producers like plants, humans are not producers and therefore cannot be at the first tropic level.
if a parent cell has 48 chromosomes, how many does each daughter cell have at the end of meiosis ii?
Answers
Answer: the answer is 24 chromosomes
Explanation:
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Which statement describes one feature of chemical changes? They never change a substance’s properties. They change a substance’s identity. They can usually be reversed. They keep a substance’s arrangement of atoms the same.
Answers
They change a substance’s identity.
Answer:
They change a substance’s identity.
Explanation:
In humans, which of these is required for carrying oxygen from the lungs to body cells?.
Answers
Just need the answers
Answers
The muscles engaged when pushing against a wall are labeled in the attachment.
What are the muscles engaged when pushing against a wall?When pushing against a wall, several muscles in your upper body and lower body are engaged. The specific muscles involved depend on your body position, the force of the push, and the duration of the activity.
However, some of the main muscles that are commonly engaged when pushing against a wall include:
Chest muscles (Pectoralis major): These muscles are located in the front of your upper body and are responsible for bringing your arms across your chest.Shoulder muscles (Deltoids): The deltoid muscles are located on the upper part of the shoulder and are responsible for moving your arms away from your body.Triceps: The triceps muscles are located at the back of your upper arms and are responsible for extending your arms.Core muscles: When pushing against a wall, your core muscles, including your abdominal muscles and lower back muscles, are engaged to stabilize your torso and prevent injury.Leg muscles: Your leg muscles, including your quadriceps, hamstrings, and glutes, provide the power to push against the wall and maintain your body position.Learn more about muscles at; https://brainly.com/question/29851880
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Complete question:
What are the muscles engaged when pushing against a wall?
The part of the brain that directly controls secretions from the pituitary gland is the.
Answers
The hypothalamus is the region of the brain responsible for directly controlling pituitary gland secretions. brain contains a little region called the hypothalamus. It's crucial for harmony of your body functions.
It manages how the pituitary gland releases hormones. The anterior and posterior lobes of the pituitary gland are two distinct sections that can be separated. There are several tiny nuclei with a range of activities located in the hypothalamus, a region of the brain. Connecting the nervous system is among its most crucial roles.
The pituitary gland, also known as the hypophysis in vertebrate anatomy, is an endocrine gland located in the hypothalamus at the base of the brain. It is roughly the size of a chickpea and weighs 0.5 grammes on average.
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Choose the statement that is NOT true about conditions within the given biome.
Temperate grasslands are in the wetter areas of the temperate zone.
Tundras are very cold with very little rainfall.
Steppes are cold grasslands with little precipitation.
All deserts have extremely low precipitation levels.
Answers
The statement that is NOT true about conditions within the given biomes is "Temperate grasslands are in the wetter areas of the temperate zone."
Temperate grasslands are typically found in areas that experience moderate rainfall, but they are not necessarily located in the wetter areas of the temperate zone. The distribution of temperate grasslands is more influenced by factors such as temperature, soil conditions, and vegetation types. They are characterized by a semiarid climate with moderate rainfall, but not as wet as regions with forests or higher levels of precipitation.
Tundras, on the other hand, are indeed very cold with little rainfall. They are characterized by extremely cold temperatures and a short growing season. Precipitation in tundra regions is generally low, often in the form of snow, and the frozen ground limits water absorption.
Steppes are cold grasslands with little precipitation. They are similar to temperate grasslands but tend to have colder climates and receive less rainfall. Steppes are found in regions with a continental climate and are often associated with dry and arid conditions.
Deserts are known for their extremely low levels of precipitation. They have arid or semiarid climates, which result in limited rainfall. Deserts are characterized by their dry and barren landscapes, with scarce vegetation and adaptations to survive in water-scarce environments.
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Which of the following is an example of facilitated diffusion?
A. liquid molecules colliding with one another
B. reaching an equal amount of molecules on both sides of a membrane
C. Red blood cells allowing glucose to move in and out
D. cytoplasm keeping an organelle in place
Answers
Answer:
I am not very sure but it is most probably C.
Answer:
Red blood cells allowing glucose to move in and out
Explanation:
facilitated diffusion:
diffusion of molecule due to concentration gradient via transport proteins
glucose movement through membrane occur via GLUT transporters
Some species of animals have moved into caves over generations. Which of the
following structures would MOST LIKELY to have become a vestigial structure in
these animals?
eyes
ears
teeth
legs
Answers
Differentiating Star Systems
Choose the word from the drop-down menu that completes each sentence.
AJAN
star system is made of two stars.
AlAn
star system is made of no more than a few thousand stars.
AlAn
star system is made of more than a million stars.
Answers
Answer:
The answer are
1 binary
2 open cluster
3 globular cluster
Explanation:
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what can be used to study the similarities and differences structure over time
Answers
One tool that can be used to study the similarities and differences in structure over time is a comparative analysis.
This involves examining multiple cases or examples of the same phenomenon, and analyzing how they differ or remain consistent over time. This can be done through various methods such as content analysis, discourse analysis, or statistical analysis. Additionally, techniques such as longitudinal studies or trend analysis can be used to track changes in structure over time. Ultimately, the choice of method will depend on the research question, data available, and the context of the study.
A extensive examination of something that makes it impossible to determine its nature or pinpoint its defining traits. analysing the problem in great detail.
Because it organises and analyses data before organising it into presentable information that can be used in practical applications, analysis is important.
Financial analysis is the process of assessing the viability, stability, and profitability of an organisation, division of an organisation, or project.
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The Complete question is
What tool can be used to study the similarities and differences structure over time?
a broad-sense heritability of 0.8 for a particular trait indicates that
Answers
That a broad-sense heritability of 0.8 for a particular trait indicates that 80% of the variation in that trait within a population can be attributed to genetic factors. influenced by genetic inheritance .the broad-sense heritability includes dominance, and interaction effects.
It also takes into account environmental factors that may affect the expression of the It is important to note that a heritability of 0.8 does not mean that the trait is completely determined by genetics. Environmental factors, such as nutrition or exposure to toxins, can still have an impact on the expression of the trait. A broad-sense heritability of 0.8 for a particular trait indicates that 80% of the phenotypic variation in the population is due to genetic factors, while the remaining 20% is due to environmental factors
Broad-sense heritability (H^2) is a measure used in genetics to estimate the proportion of phenotypic variation in a population that can be attributed to genetic factors. It is expressed as a value between 0 and 1. A broad-sense heritability of 0.8 means that 80% of the observed variation in the trait can be explained by genetic differences among individuals, while the remaining 20% of the variation can be attributed to environmental factors and their interaction with genetic factors. In other words, a higher heritability value suggests that genetic factors play a more significant role in determining the expression of that trait in the population.
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Please help me answer these questions!!!!!!! I still have more homework to do!!!
Answers
Answer:
1. Hydraulic Dam
2. Small Shops
3. Town Hall
4. Special Carts
5. Postal Office
6. Steel Widget
7. Large Wooden Fence
8. Scrap Yard
9. Carpenter's Union
Explanation:
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