The ______ is a particularly sensitive region of the retina on which focused images are automatically centered. A.) cornea. B.) fovea. C.) iris. D.) pupil.
Answers
The B) fovea is a particularly sensitive region of the retina on which focused images are automatically centered.
The retina is the layer of tissue located at the back of the eye that contains photoreceptor cells (rods and cones) that detect light and transmit visual signals to the brain. The fovea is a small, specialized region located in the center of the macula, which is a part of the retina.
The cones in the fovea are responsible for producing sharp, detailed, and color vision, which makes it the most sensitive part of the retina. The fovea is also responsible for our ability to see fine detail, like reading and recognizing faces, as well as for our ability to perceive color.
When we focus our eyes on something, the focused image is automatically centered on the fovea. This enables the fovea to produce a clear and precise visual image, while other areas of the retina are responsible for detecting the surrounding peripheral visual information.
The fovea is a particularly sensitive region of the retina on which focused images are automatically centered, making it essential for our ability to see fine detail and color. The answer is option B.
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Related Questions
Difference in powdered salt and granulated salt
Answers
In a certain population of rabbits, the allele for brown fur is dominant over the
allele for white fur. If 20 out of 100 rabbits have white fur, what is the allele
frequency for the dominant allele?
Answers
Draw a diagram/figure to explain the conjugation process (e.g. use PowerPoint or draw one by hand and include a photo of it). You should include in the diagram the F- recipient, Hfr Donor and the transconjugant/recombinant recipient. Make sure to include the genes encoding for Leucine, Threonine, Thiamine and Streptomycin resistance in your diagram. How does an Hfr strain of E. coli transfers chromosomal DNA to an F- strain? What determines how much of the chromosomal DNA is transferred?
Answers
The process of conjugation is the transfer of DNA from one bacterium to another via a specialized structure known as a pilus or conjugation tube.
Here's a diagram that explains the process of conjugation: In the diagram above, an Hfr cell transfers its chromosome to an F- cell through conjugation. In conjugation, a pilus extends from the Hfr cell and attaches to the F- cell. The chromosome of the Hfr cell is then replicated and a portion of it is transferred through the pilus to the F- cell. The F- cell remains F- because it did not receive the entire F plasmid, which is required to turn it into an F+ cell. In addition, the transferred chromosome has genes encoding for Leucine, Threonine, Thiamine and Streptomycin resistance that are integrated into the recipient cell's chromosome.
Thus, the transconjugant/recombinant recipient is now resistant to these antibiotics. The process of conjugation is highly regulated. The point at which the chromosome breaks off and starts to transfer into the recipient cell is controlled by specific DNA sequences on the chromosome. The orientation of these sequences determines how much of the chromosome is transferred.
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what term refers to the area between the soft palate and the upper portion of the epiglottis?
Answers
The oropharynx is a section of the throat located at the back of the mouth and is involved in both the respiratory and digestive processes.
The oropharynx is positioned directly behind the oral cavity (mouth) and extends from the soft palate, which is the posterior part of the roof of the mouth, to the epiglottis. It serves as a passage for both air and food. During the process of swallowing, the epiglottis folds over the opening of the larynx to prevent food and liquids from entering the windpipe (trachea). This ensures that substances are directed towards the esophagus and into the digestive system rather than the respiratory system.
Additionally, the oropharynx plays a crucial role in vocalization and speech production. It contains the tonsils, which are part of the immune system and help to protect against infections. The oropharynx is also the area where the airway and food pathway cross, making it a vital region for the proper functioning of both systems.
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in the article, which technologies have been developed to enhance space exploration? choose all that apply
Answers
Answer:
Hahahah
Explanation:
Which One help!!!!
DNA and RNA differ in the following way(s):
A) DNA has a phosphate and RNA does not
B) DNA and RNA have different sugars
C) DNA and RNA have different nucleotides
D) All of the above
E) B and C
Answers
Answer:
E) B C
DNA has deoxyribose sugar
RNA is ribose Sugar
DNA has ATGC
RNA has AUGC nucleotides
Explanation:
Is a sister chromatid a DNA molecule?
Answers
A sister chromatid is a DNA molecule that is made up of two identical copies of the same chromosome. Chromosomes are the genetic material found in the nucleus of the cell, and sister chromatids are formed when the chromosomes replicate during cell division.
Sister chromatids are identical copies of the same chromosome, which are held together by a specialized protein structure known as a centromere. The centromere is responsible for the proper segregation of the sister chromatids during cell division. The sister chromatids are made up of two strands of DNA, which are connected to each other by a protein called a histone. Each strand is held together by hydrogen bonds, which are formed between the base pairs of the DNA.
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Two normal individuals have a child who has cystic fibrosis, an autosomal recessive disease. What were the chances of this happening? (Draw a Punnett square to help you determine the answer.) O a. 1:4 chance O b. less than 1:4 chance c. 3:4 chance O d. 2:4 chance e. 4:4
Answers
The chances of two normal individuals having a child with cystic fibrosis, an autosomal recessive disease, is 1:4 or 25%.
This can be determined by drawing a Punnett square using the letters "A" and "a" to represent the alleles for the normal gene and the cystic fibrosis gene, respectively.
The Punnett square would show that both parents must be carriers of the cystic fibrosis gene, with each having one copy of the normal gene and one copy of the cystic fibrosis gene (Aa). When the two Aa parents mate, there is a 25% chance that their child will inherit two copies of the cystic fibrosis gene (aa) and thus have the disease.
Therefore, the answer is a. 1:4 chance.
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What is the difference between weathering and erosion? (Site 1).
Answers
Answer:
Weathering and erosion are natural geological processes that act like rocks and soil on the earth's surface, moving and reshaping the earth. Weathering is the breaking down of rocks into smaller pieces by changing the size and structure of the rocks. The forces of nature are largely responsible for this process. Erosion involves processes such as wind, water flow, and ice movement, which results in change from one place to another.
Using your own words explain how the process of
Photosynthesis occurs (hint - what must go in and
what is created?)
Answers
Answer:
hope this will help you
Explanation:
photosynthesis is the process in which plant make their own food with the help of sunlight,water and carbon dioxide. water and carbon dioxide are raw materials in photosynthesis because they help to prepare their food.During photosynthesis, plants take in carbon dioxide and water from the air and soil. Within the plant cell, the water is oxidized, meaning it loses electrons, while the carbon dioxide is reduced, meaning it gains electrons. This transforms the water into oxygen and the carbon dioxide into glucose. The plant then releases the oxygen back into the air, and stores energy within the glucose molecules.so sunlight water and carbon dioxide should go in which create oxygen.
Which property of DNA contributes the most to DNA's ability to
replicate?
A. DNA coils into a long spiral or helix
B. DNA has two complementary strands that can separate
C. Each strand of DNA has a sugar-phosphate backbone
D. Each strand of DNA can be made of a unique sequence of
four different bases
Answers
The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
In how many steps replication occurs?Replication has been occurs in three major steps is the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.
DNA replication has been known the biological process of producing two identical replicas of DNA from one original DNA molecule.DNA replication occurs in all living organisms acting as the most essential part of biological inheritance.
This is essential for cell division during the growth and repair of damaged tissues, while it also ensures that each of the new cells receives its own copy of the DNA. The cell possesses the distinctive property of division, which makes replication of DNA essential.
Therefore, The property of DNA contributes the most to DNA's ability to replicate is DNA has two complementary strands that can separate. Thus, option B is correct.
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Name one protein within the cell membrane and describe its function.
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resting metabolic rate accounts for what percentage of total energy expenditure?
Answers
Resting metabolic rate accounts for approximately 60-75% of total energy expenditure. Resting metabolic rate (RMR) refers to the amount of energy that the body uses at rest to perform basic functions such as breathing, circulating blood, and maintaining body temperature. RMR can vary depending on a person's age, gender, body composition, and overall health status.
Studies have shown that RMR accounts for a significant portion of total energy expenditure, ranging from 60-75%. This means that even when a person is not engaged in physical activity, their body is still using a significant amount of energy to carry out essential functions.
It's worth noting that RMR can be influenced by various factors, such as diet, exercise habits, and sleep patterns. Maintaining a healthy lifestyle that includes regular physical activity and a balanced diet can help to boost RMR and overall energy expenditure.
In summary, resting metabolic rate accounts for a large percentage of total energy expenditure, with estimates ranging from 60-75%. This highlights the importance of maintaining a healthy lifestyle that supports optimal RMR and energy balance.
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The majority of dissolved tons in seawater is , roughly a 0.5M NaCl concentrationThe lonization constant of is 2.0. Calculate the solute potential for seawater if you know that the water is 2C
Answers
The solute potential for seawater is -2.6 kPa.
What does solute potential mean?When a solute is dissolved in water, it is less likely to osmotically diffuse away than when it is not. A solution's water potential will be lower and more negative than that of pure water.
Additionally, as there are more solute molecules present, the solute potential becomes more negative. Many different living species are significantly impacted by osmotic potential. If a live cell is surrounded by a more concentrated solution, it will likely lose water as a result of the environment's higher water potential. Both marine creatures that live in sea water and halophytic plants that grow in salty conditions can demonstrate this.
The solute potential for seawater is -2.96 kPa.
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If the field of views under 400x is 500micrometer,how many 100micrometer long cells could be seen end to end across the field of view( to the nearest 0.10 of a cell)
Answers
For the long cells, at 400x magnification you will be able to see 0.45mm, or 450 microns.
What do you mean by magnification?Magnification is the process of enlarging the apparent size, not physical size, of something. This enlargement is quantified by a calculated number also called "magnification".
Magnification is the ability of a microscope to produce an image of an object at a scale larger (or even smaller) than its actual size. Magnification serves a useful purpose only when it is possible to see more details of an object in the image.
There are two types of magnification lenses Simple and Compound lenses. Simple Lenses: It refers to a simple lens that we use to magnify an object. Also, a single lens is the lens that we use to read the newspaper, magnify the things or objects in the front.
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In the cross Aa X Aa, what is the expected phenotypic ratio of the offspring produced by this mating? What is the probability that a given offspring of this cross will have the genotype aa? How about Aa?
Answers
In the cross Aa X Aa, the expected phenotypic ratio of the offspring produced by this mating is 3:1. This means that there is a 75% chance for the offspring to have the dominant phenotype (A_) and a 25% chance to have the recessive phenotype (aa).
The probability that a given offspring of this cross will have the genotype aa is 25% or 1/4. This is because both parents carry the recessive allele (a), and when they combine during fertilization, there is a 1/4 chance of the offspring inheriting the aa genotype.
Similarly, the probability that a given offspring of this cross will have the genotype Aa is 50% or 1/2. This is because there are three possible genotypes for the offspring: AA, Aa, and aa. Among these, the Aa genotype occurs in 2 out of the 4 possible combinations, resulting in a 1/2 probability.
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how does the size of an island generally affect its biodiversity, and why? group of answer choices the size of an island does not affect diversity, as it has been shown in many studies that only the distance between an island and a continent affects its biodiversity. larger islands tend to have lower diversity than smaller islands because larger islands usually support larger populations of predators. larger islands tend to have higher diversity than smaller islands because larger islands usually have more space for a higher diversity of habitats. larger islands tend to have higher diversity than smaller islands because larger islands are often found closer to continents. larger islands tend to have lower diversity than smaller islands because larger islands are often found farther from continents.
Answers
This is because larger islands typically offer a greater variety of habitats, such as different types of forests, grasslands, wetlands, and coastal areas, which can support a wider range of species.
C. Larger islands tend to have higher diversity than smaller islands because larger islands usually have more space for a higher diversity of habitats.
Larger islands also tend to have more diverse microhabitats, such as niches and microclimates, which can further contribute to higher biodiversity. Additionally, larger islands may have less edge effects, which are changes in environmental conditions along the edges of habitats, compared to smaller islands, resulting in more stable and diverse ecosystems. Overall, the larger size of an island can provide more ecological opportunities for different species to thrive, leading to higher biodiversity.
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Complete Question
How does the size of an island generally affect its biodiversity, and why?
A. The size of an island does not affect diversity, as it has been shown in many studies that only the distance between an island and a continent affects its biodiversity.
B. Larger islands tend to have lower diversity than smaller islands because larger islands usually support larger populations of predators.
C. Larger islands tend to have higher diversity than smaller islands because larger islands usually have more space for a higher diversity of habitats.
D. Larger islands tend to have higher diversity than smaller islands because larger islands are often found closer to continents.
E. Larger islands tend to have lower diversity than smaller islands because larger islands are often found farther from continents.
specify the reagent you would use in each step of the following synthesis: oh
Answers
The reagent you would use in each step of the synthesis is alcohol.
In organic chemistry, synthesis is the formation of chemical compounds by putting together simpler compounds or molecules. Synthesis can be used for a variety of purposes, including drug development. Organic synthesis involves a series of reactions that must be carried out in a specific order to create the desired compound. The reagents used in each step are critical to the success of the reaction. In the given reaction scheme, the desired product is an alcohol.
In the first step, an alkyl halide is treated with sodium hydride (NaH), a strong base that can remove the halide to generate a carbanion that can react with the carbonyl group in the next step. The resulting alkoxide intermediate is then reacted with an acid chloride to form an ester. The final step involves the reduction of the ester to an alcohol using lithium aluminum hydride (LiAlH₄), which can selectively reduce carbonyl groups without affecting other functional groups. Therefore, NaH is used in the first step, followed by an acid chloride, and finally LiAlH4 in the last step to synthesize the desired alcohol.
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EyeMax based in Cambridge is a medical company specialising in reselling corrective lenses to reduce myopia in children for the UK and Spanish market. Prévoyance based in France hold the distribution rights for the rest of the EU. The business has recently received exclusive distribution rights for the Orthok range of lenses based on sales performance and customer satisfaction. The rights can be withdrawn if EyeMax fail to fulfil orders for this growing market.
- 50 ADV (average daily volume/package) UK mainland, 20 ES
- B2B 95% (hospitals, clinics and opticians), 5% B2C
- Order weight <0.5kg
- Single units have package dimensions of (20x15x2)cm
- Sometimes irregular shaped packaging is used for large orders of Orthok stands and posters which are promoted in the clinics. This accounts for 5 ADV (average daily volume/package)
- Order value is high (£540)
- Shipments are non-urgent so only a Standard service is needed
- Packages should not be left out in warm conditions for too long, optimal temp is 3 °C to 5 °C
Outbond
- 2 people responsible for preparing shipping labels taking 2.5 minutes per order
- Same people respond to any shipping queries and follow up with carriers
- Orders are manually keyed into the DHL shipping system held in WooCommerce
- Around 15% WISMO (Where is my order) calls received daily regarding delays and undeliverables RTS (Return-to-sender)
- It is important to know the exact shipping costs as soon as possible since invoicing the end customer especially in Spain, as it can affect margins, particularly for the promotional stands and posters
- Contracts with NHS England means proof of delivery needs to be retained for 12 months
inbound
- Express Freight shipments from the US are received once a month to the Cambridge site
- The carrier from the US has dated visibility tools and is only familiar with the old industry standard of EDIFACT (Electronic Data Interchange for Administration, Commerce and Transport) making visibility an issue. This affects stock allocation.
- EyeMax have found the products sometimes stick together upon arrival affecting the overall quality of the packaging
- For any urgent order unable to be immediately fulfilled, the customer is asked if they can wait up to 4 weeks or an internal purchase order is made to Prévoyance
- Prévoyance may despatch to the Cambridge site 3-5 times, often at the end of the month
Questions 1. From the information known, map out the supply chain
Answers
Operations performance objectives trade off against each other as the performance of one objective can be improved by compromising on another.
These trade-offs are mostly due to resource constraints, and thus, they are a significant factor in operations management.
What are operations performance objectives?Operations performance objectives refer to the specific outcomes that an operation seeks to achieve. They are the goals of an operation. Organizations use operations performance objectives to create a strategy that addresses the objectives and outlines how to achieve them. Operations performance objectives are split into five categories: Cost: This objective refers to providing a service or product at the lowest possible cost.
Quality: This objective refers to providing a service or product that meets or exceeds customer expectations. Speed: This objective refers to delivering a service or product quickly. Dependability: This objective refers to delivering a service or product as promised. Flexibility: This objective refers to the ability to provide a service or product that meets customer needs. Operations performance objectives trade-offs Operational performance objectives trade-offs refer to the relationship between performance objectives. In operations management, achieving one objective often means sacrificing another. For example, achieving higher quality may mean incurring higher costs, which is a trade-off between quality and cost. In some cases, achieving one objective may enhance another. For instance, a quicker turnaround time (speed) can increase dependability and flexibility. These examples show that trade-offs can be positive or negative. The following are common trade-offs among operational performance objectives: Cost vs. quality: Offering higher quality goods or services will increase costs. Flexibility vs. speed: Being flexible slows down the speed of operations. Speed vs. quality: Higher speed may lead to lower quality. Dependability vs. flexibility: To be dependable, the operations need to be standardized, limiting flexibility.
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5\8 as a terminating decimal
Answers
6 Yes, 5/8 is a terminating decimal. 5/8 = 0.625
What is terminating decimal?A decimal with an end digit is referred to as a terminating decimal. It is a decimal, which means that its digits are limited (or terms). For instance, 0.15, 0.86, etc. The decimals that lack an end term are known as non-terminating decimals. There are indefinitely many terms in it. Numbers with a definite or limited number of digits following the decimal point are referred to as terminating decimals. Similar to fractions, decimal numbers are used to represent a portion of a whole. A terminating decimal is a number that has a limited number of digits following the decimal point. To "terminate" is to "bring to a close." It is a decimal number that comes to an end. We shall discover what terminating decimals are in this essay.To learn more about terminating decimal refers to;
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An organism that has one dominant allele and one recessive allele for a trait is referred to as being ________________ for that trait.
Answers
Answer:
Heterozygous
Explanation:
Hetero is derived from the root meaning 2 different. Since the organism has 2 different alleles for the trait, it is heterozygous.
Why are advantage traits more likely to be passed onto offspring?
Because they are more likely to survive and reproduce
Because they come from recessive genes
Because they come from dominant genes
Because the traits is an acquired phenotype
Answers
Answer:
I would go with B(because.....
Of compound with molecular formula are burned in a constant-pressure calorimeter containing of water at. The temperature of the water is observed to rise by. (you may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself. ) calculate the standard heat of formation of compound at. Be sure your answer has a unit symbol, if necessary, and round it to significant digits.
Answers
The standard heat of formation of compound C₃H₄ is 276.8kJ/moles
In this case, the equation used to model the heat transfer to the calorimeter and calculate the heat of reaction is:
ΔHrx = mcΔT
where ΔHrx is enthalpy, m is mass, c is the specific heat, and ΔT is the temperature change. Obtained by substituting water volume, temperature change, and specific heat.
This reaction enthalpy corresponds to the combustion of propyne.
C₃H₄ + 4O₂⇒3CO₂ +2H₂O
Changes in their enthalpies affect the enthalpies of formation of propyne, carbon dioxide, and water, targeting the enthalpy of propyne.
ΔHrx = 3ΔHf CO₂ + 2ΔHf H₂O - ΔHf C₃H₄
However, the reaction enthalpy must be expressed in kJ per mole of C₃H₄, so divide by the corresponding number of moles in 7.00 g of this compound.
ΔHrx = -339.16 kJ x 1/7.00 g x 40.06 g/1 mol = -1940.9kJ/mol
Then solve for the enthalpy of formation of C₃H₄ as shown below.
ΔHf C₃H₄ = 3ΔHf CO₂ + 2ΔHf H₂O - ΔHrx
So plug in and get (the enthalpies of formation of CO2 and H2O can be found in the NIST database):
ΔHf C₃H₄ = 3ΔHf CO₂ + 2ΔHf H₂O - ΔHrx
ΔHf C₃H₄ = 3(-339.16 kJ) + 2(-241.8 kJ) - (-1940.9 kJ)
ΔHf C₃H₄ = 276.8kJ/moles
Your question is incomplete but most probably your full question was
7.00 of Compound x with molecular formula C3H4 are burned in a constant-pressure calorimeter containing 35.00kg of water at 25c. The temperature of the water is observed to rise by 2.316c. (You may assume all the heat released by the reaction is absorbed by the water, and none by the calorimeter itself.) Calculate the standard heat of formation of Compound x at 25c.
Be sure your answer has a unit symbol, if necessary, and round it to 3 significant digits.
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what can make the amino acids sequence to be low: active site mutation, stop codon mutation, trna error
Answers
Stop codon mutation can make the sequence to be low. Option (b) is correct.
What are the amino acids?Amino acids are molecules that combine to form proteins and amino acids and proteins are the building blocks of life. When proteins are broken down, then amino acids are left. Human body uses amino acids to make proteins to help the body and break down food.
Stop codon mutations can result in shorter amino acid sequence because premature termination of translation can lead to incomplete protein synthesis. Resulting protein may be truncated and may also lack essential functional domains, resulting in non-functional functional protein.
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for each species calculate the percentage of each nitrogenous base. the 1-2 sentences explain how these bases are typically paired off. in addition to this explain how dna structure helps genetic information be passed down to the next generation
Answers
The percentage of the nitrogen bases is obtained from Chargaff's rule which states that in a DNA molecule A = T and G = C and A + G + C + T = 100%.
In the DNA molecule, A is paired to T while G is paired to C.
The structure of the DNA molecule helps to pass genetic information down generations as the information stored can be accuratele copied and stored within each cell.
What is the structure of the DNA?Adenine (A), thymine (T), cytosine (C), and guanine (G) are the four nitrogen bases that make up the DNA molecule, and together they constitute a nucleotide. While C and T are pyrimidines, A and G are purines. The two segments of DNA are oriented differently.
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Fatty acids required in the diet of mammals are called O a. Essential lipids O b. Dietary lipids ☆ O c. Saturated lipids O d. Important lipids O e. Esters
Answers
The correct answer is B. Dietary lipids.
Fatty acids required in the diet of mammals are commonly referred to as dietary lipids. These are essential components of the diet as they play important roles in energy storage, insulation, and the synthesis of various cellular components. Dietary lipids can include both saturated and unsaturated fatty acids, which are obtained from sources such as oils, fats, and certain food groups. These lipids are essential because mammals cannot synthesize certain fatty acids on their own and must obtain them from their diet.
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Which of the following is best for representing a time period in which an organism could evolve (for evolution to happen)? A 3,000 days B 2 decades C 10,000 years D 275 years
Answers
Answer:
C] 10,000 years
Explanation:
It usually takes a million or more years. The longer, the more identifiable.
Endocytosis: uses simple diffusion move material across the plasma membrane. is the process of taking materials into the cell. directs material to the endoplasmic reticulum. releases material in the form of phagosomes.
Answers
Answer:
B.) is the process of taking materials into the cell
Explanation:
A.) is incorrect because endocytosis move things into the cell by collapsing the cellular membrane around the substance and then budding off.
C.) is incorrect because the material is not always directed to the endoplasmic reticulum. Most the the material is directed to the lysosomes.
D.) is incorrect because phagosomes are created during phagocytosis, a special type of endocytosis.
Overfishing is a global problem in which humans harvest certain species of fish, almost to the point of extinction. Many of the fish stocks depleted by overfishing are at the top of the food chain. Why would the overfishing of very large fish cause a decrease in the numbers of small fish?
The small fish are more likely to die from diseases and parasites.
The small fish live in a mutualistic relationship with the large fish.
The small fish have a greater number of medium-sized predators.
The small fish must compete with each other for fewer food sources.
Answers
Answer: i think it’s C
Explanation: i’m taking the test rn and that’s what i’m gonna put, it’s the best answer
Which action in a conservation plan would reduce erosion caused by runoff?
Responses
A)clearing trees and bushes from hillsides
B)paving hills to create smooth surfaces
C)removing excess ground cover
D)leaving harvested material on the ground
Answers
The action in a conservation plan would reduce erosion caused by runoff Responses is clearing trees and bushes from hillsides. Thus, option A is correct.
What is mudslide?Mudslide when a bulk of soil slides down a steep hill or mountain causing damage to the flora and fauna of the place. Mudslide leads to soil erosion in hilly areas.There are various causes of mudslide.
Heavy rainfall that pushes the soil/mud down the hill.Gushing water or accumulated water absorbed by the soil reduces fiction and causes mudslide.
Therefore, The action in a conservation plan would reduce erosion caused by runoff Responses is clearing trees and bushes from hillsides. Thus, option A is correct.
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