Answer:
B
Explanation:
The iris controls how much light the pupil lets in. Next, light passes through the lens. The lens works together with the cornea to focus light correctly on the retina.
Which of the following indicates the
amount of individuals which can live
comfortably in a particular area?
A. emigration
B. immigration
C. population growth
D. carrying capacity
Beetroot cells contain a family of dark red pigments called betalains. The selectively permeable nature of the beetroot cells keeps the internal environment of the cell separate from the external environment of the cell. Researchers are interested in determining whether the selective permeability of beetroot cells is due to the cell membrane or if it is due to the cell wall.
Exposure to cellulase is known to damage the structure of the cell wall. An experiment is set up in which beetroot cells are placed in an aqueous solution with cellulase and in one without cellulase.
Which of the following results best refutes the alternative hypothesis that selective permeability is a consequence of the cell wall?
A. When beetroot cells are placed in a solution with cellulase, the solution turns dark red.
B. When beetroot cells are placed in a solution with cellulase, the solution remains clear.
C. When beetroot cells are placed in a solution, it turns dark red with or without cellulase present.
D. Since plant cells contain cell membranes, not cell walls, the alternate hypothesis cannot be tested.
The result that refutes the alternative hypothesis that selective permeability is a consequence of the cell wall is: B. When beetroot cells are placed in a solution containing cellulase, the solution remains clear.
Cell wall is a characteristic specific to the plant cells. These do not exist in the animal cells. Cell wall is made up of dead cells and provide the cell structure support and mechanical strength. The plant cell wall has a composition of cellulose, hemicellulose and pectin.
Semi-permeability is the feature of any membrane where it allows the passage of only few substances through it. In living cells, this characteristics can be found in cell membrane only and not in cell wall.
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What’s the correct answer answer asap for brainlist
Answer:
B
Explanation:
What happens due to Divergent plate movement?
A. Volcano eruption
B. Mountain Eruption
C. Sea floor spreading
D. earthquake
Answer:
C. Sea Floor Spreading
Explanation:
Juliet has asthma and regularly uses inhalers and a nebulizer, a machine to help improve her breathing with inhaled medicine. Juliet knows how important the respiratory system is and learns more about how it works. Explain the job of the respiratory system. Identify the parts of this system, and describe their functions.
Respiratory system is one of the major systems of the body that helps to oxygenate the blood for cell use.
What are the parts of respiratory system?The parts of the respiratory system include the following:
Trachea: This makes up the upper part of the respiratory system and serves as a channel for passage of gases.Bronchi: This is located distal to trachea which bifocates at the carina to form the right and left bronchi.Bronchioles: This serves a channel for the passage of air.Alveolar ducts: This is the duct that delivers air to the alveoli where gaseous exchange takes place.Learn more about respiratory system here:
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How does mitosis help our sequoia tree become so big?
Question 5 options:
Mitosis makes gametes that are genetically different in order to produce seeds for the next generation of sequoia trees.
Mitosis is a process that starts with a stem cell that becomes a specialized cell(s) to carry out the complex processes of life needed to sustain the sequoia tree.
Mitosis makes more cells to repair or replace dead or damaged cells, and it makes more cells to help the tree grow.
All of the above
Mitosis helps sequoia tree become so big in the following way: Mitosis makes more cells to repair or replace dead or damaged cells, and it makes more cells to help the tree grow (option C).
What is mitosis?Mitosis is the division of a cell nucleus in which the genome is copied and separated into two identical halves. It is normally followed by cell division.
Mitosis is opposed to meiosis, which is a cell division that produces gametes by the dividing a diploid cell into four haploid cells.
Mitosis is retains the number of chromosomes of the parent cell in the offsprings. Mitosis describes the duplication and distribution of chromosomes, the structures that carry the genetic information.
One of the major functions of mitosis is the repair or replacement of damaged cells, hence, by so doing creates more and more cells that makes a living organisms grow in size.
Therefore, the sequoia tree mentioned will become big because of the activities of the mitotic process.
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Patrick is a 16 year old boy whose body has stopped producing osteoclasts. What does this mean for his bones? What other parts of
his body will be affected by this?
Hindrance in the production of osteoclasts will result in weak and brittle bones. This eventually leads to the bones of the hip, wrist, and spine weakness.
The function of osteoclasts is to resorb or break down bone. This is a process that is necessary for the maintenance of bone mass and for the repair of damaged bone.
This is necessary for the elimination of dead bone cells in the human body. The malfunctioning or stopping of the function of Osteoclasts weakens bones, making them prone to breaking from even minor stresses like coughing or stooping.
In worst cases, it leads to fractures in the regions of the hip, wrist, or spine. Bone is a living tissue that constantly degrades and is replaced so that the endurance and working of the bone are ensured throughout the body.
Therefore, Patrick would face severe problems with his bone, especially in his hip, spine, and wrists. All the bones in these regions will start to lose their strength and will become brittle and weak.
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Which of these pathogens are
single-celled eukaryotes that
infect through contaminated water
or insect bites?
fungi
protists this
Answer:
b) Protists
Explanation:
Protists like protozoa are the single celled eukaryotes that infect through contaminated water or insect bites. Hence, the option (b) is correct answer.
Pike's Peak, in Colorado, is pictured below. Pike's Peak has
been shaped in part by water filling cracks in the rock, then
freezing and expanding
Which type of weathering occurs after water enters cracks in rock and then
freezes?
A. Abrasion
B. Oxidation
C. ice wedging
D. Mass wasting
Answer: B
Explanation:
Answer: C
Explanation:
it’s really not it I js got the answer wrong for oxidation and the right answer is ice wedging trust me:)
To Telecommunicate is to (select one)
To telecommunicate is to transmit information electronically.
What is Telecommunication?This is referred to as the process in which information is transmitted through various types of technologies such as wire optical etc or other electromagnetic systems. It also brought about new discoveries such as the internet and phones.
This method is mostly used in today's world and has replaced the older means which involves writing letters or using of signals to convey an information because it is a very fast and safe means of exchanging information between two or more people and can travel very long distances thereby making it the most appropriate choice.
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(04.01 MC)
Which of the following best describes the flow of energy in the Everglades food web shown below? (4 points)
Diagram for an everglades food web. The food web contains the following organisms: American alligator, egret, raccoon, carp, Key deer, insects, Southern leopard frog, mangrove, and sawgrass. Mangrove is at the bottom of the food web, with arrows pointing to Key deer and insects. Sawgrass is also at the bottom of the web, with an arrow pointing to insects. Key deer, insects and Southern leopard frog are on the next level up. The Key deer has an arrow pointing to American alligator. The insects point to egret, carp, and Southern leopard frog. The Southern leopard frog points to the American alligator and the raccoon. The egret, carp and raccoon all points upward toward the American alligator. The carp also points to the egret. The American alligator is at the top of the food web.
Egret → insects → mangrove → key deer → American alligator; about 90 percent of the energy in one trophic level is transferred to the next trophic level.
Mangrove → insects → carp → American alligator; about 90 percent of the energy in one trophic level is transferred to the next trophic level.
Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level.
American alligator → carp → insects → mangrove; about 10 percent of the energy in one trophic level is transferred to the next trophic level.
The following which best describes the flow of energy in the Everglades food web shown below is Sawgrass → insects → Southern leopard frog → raccoon → American alligator; about 10 percent of the energy in one trophic level is transferred to the next trophic level and is denoted as option C.
What is Food web?This consists of all the food chains in the ecosystem and it shows the feeding relationships between organisms.
Primary producers such as saw grass starts a food web while tertiary consumer such as american alligator end it with about 10 percent of the energy in one trophic level being transferred to the next.
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Why is meiosis called cell division?
Meiosis, also known as "cell division," involves cutting the number of chromosomes in half, ensuring that the newborn will have the right number of chromosomes when the sperm and egg fuse.
Why is Meiosis Important?The process of meiosis is what creates the gametes, which are essential for sexual reproduction. It turns on the genetic material required for gamete development. It helps to maintain a consistent number of chromosomes by cutting the number of chromosomes in gametes cells in half. This is significant because following fertilization, the number of chromosomes doubles. An independent combination of paternal and maternal chromosomes occurs during this process. As a result, the chromosomes and the traits they regulate are rearranged.
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Discuss one issue that Alaska and the Artic are facing due to Climate Change. To possibly earn full points, you need to include 3-5 thoughtful sentences on the issue. Include what the issue is and how it is impacting Alaska and the Artic.
One issue that Alaska and the Artic are facing due to Climate Change is that ground ice becomes prone to thaw and collapse, which impact in life of people inhabiting these regions.
What is Climate Change?The term Climate Change makes reference to the sudden modification on the weather condition on the Earth over the past few decades, whose velocity of change is increasing and it is considered to be caused by human activities that generate global warming such as the burning of fossil fuels for industrial purposes.
In Alaska and the Artic, the melting ice is causing many problems associated with daily life in these regions The ground ice known is melting, and thereby structures on the surface may collapse due to this phenomenon.
Therefore, with this data, we can see that Climate Change causes the ice in the ground ice to thaw and thus collapse.
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EXPLAIN IN DETAIL HOW THE TWO RELATES TO THE CELL THEORY
The following lists components of the nature of science. Explain how at least two of these are related to the cell theory:
Scientific knowledge is durable yet subject to change
Science is a social activity
Cell theory states that all living organisms are made up of cells, which are structural and functional units of life. These are made from already preexisting cells.
Justification for the above sentence:
Knowledge is created through the process of science. Both thorough observation of occurrences and the creation of theories to explain those observations are essential to the process. Knowledge will always change since new observations could refute accepted ideas. No matter how well one theory explains a given collection of observations, it is always feasible that another theory will fit the same set of observations just as well, better, or across a larger range.
The majority of scientific knowledge is enduring, despite the fact that scientists reject the idea of discovering perfect truth and accept some doubt as a component of nature. Science typically modifies ideas rather than rejects them completely because strong theories are more likely to endure, advance in accuracy, and gain widespread acceptance. For instance, when developing the theory of relativity, Albert Einstein did not completely reject the Newtonian laws of motion but rather demonstrated that they were only a rough approximation with a more general concept.
This seems like a strange restriction because it is obvious that both modern science and the majority of earlier science is a social activity. For information, samples, techniques, and many other things, scientists depend on one another. Their interactions are occasionally competitive and frequently cooperative.
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Multicellular organisms tend to be
made of...
A. eukaryotic cells.
B. cells with different DNA from each other.
C. prokaryotic cells.
The correct answer is A. Eukaryotic cells are capable of specialization and forming multicellular organisms. Both prokaryotic and eukaryotic cells are capable of symbiosis, photosynthesis, and storing DNA.
Explanation:
Hoped This Helped
If earths didn’t rotate then global winds would only go east and west true or false
Answer:
If the Earth did not rotate, wind would blow in a straight line. But since the Earth is rotating beneath the wind, the path it follows becomes a curve. In the Northern Hemisphere, the Earth rotates counterclockwise so the wind is deflected to the right.
Explanation:
what symbiotic relationship between a snail & Clostridium worm
Symbiotic relationship between a snail & Clostridium worm is Symbiosis.
A mutualistic, commensalistic, or parasitic symbiosis is any type of close and long-term biological interaction between two different biological organisms. The organisms, each of which is referred to as a symbiont, must be of different species. Symbiosis can be obligatory, meaning that one or more symbionts rely on each other for survival, or facultative (optional), meaning that they can live independently. Mutualism is a type of symbiotic relationship in which both partners benefit.
A mutually beneficial interaction between a clownfish and an anemone is an example of a symbiotic relationship. The anemone's nematocysts, or stinging cells, protect the clownfish from predators and provide a safe place for clownfish pairs to lay their eggs.
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which of the following sources is likely to provide the most reliable scientific information about a new kind of motor oil
Answer: A peer-reviewed article about the effectiveness of the motor oil.
85f equals to how many c?
85°F is approximately equal to 29.4°C.
To convert Fahrenheit (°F) to Celsius (°C), you can use the following formula:
°C = (°F - 32) * 5/9
Using this formula, to convert 85°F to Celsius:
°C = (85 - 32) * 5/9
°C = 53 * 5/9
°C ≈ 29.4
This conversion is often used when dealing with scientific or international temperature scales, or when comparing temperatures in different geographic locations. It is important to remember that Celsius and Fahrenheit are two different temperature scales, Celsius is used extensively around the world while Fahrenheit is used more frequently in the United States and some other countries.
Therefore, 85°F is approximately equal to 29.4°C.
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2. A dominant gene causes yellow color in rats. The dominant allele of another gene
produces a black coat color. When the 2 alleles occur together, they are co-
dominant and produce a gray coat color. If a gray male and a yellow female are
mated, what color would you expect in the offspring?
Rats' yellow hue is caused by the dominant allele A. Black coat color results from the dominant allele of R, an independent gene. Gray results from the interaction of the two dominants when they co-occur (A/_ R/_). Cream-colored rats belong to the genotype a/a r/r.
Why does the dominant allele contribute to the phenotype?In people who only have one copy of the allele, which can come from one parent, a dominant allele results in a dominant phenotype. A recessive allele requires two copies—one from each parent—in order to result in a recessive phenotype in the individual.
What does a dominant allele mean?When an allele is present in an organism, its trait always manifests itself as a dominant allele. It is spelled as XX or Xx.
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Describe the system that exposed the amphibians to wastewater and how it affects the local environment and wildlife.
The system which exposed the amphibians to wastewater is the cloaca which alone functions as an excretory, digestive and reproductive system.
How the cloaca affects the local environment and wildlife of amphibiansThis adaptive structure; cloaca of the amphibians affect the environment by means of the nature of their excretory substances through nutrients cycling and its decomposition.
That being said, amphibians belong to those groups of animals with backbones; that is, they are also vertebrates.
In conclusion, it can be deduced from the simple explanation given above that the cloaca help the amphibians to get rid of toxic nitrogenous substances out of their body.
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Why is mathematics an important tool for scientist?
Explanation:
because it's help them to understand the whole world and universe
Lesson 3.2 Review -- High School, Grade 9
1. How does solar energy and the greenhouse effect impact Earth's global climate system?
2. Describe the factors that result in different climates in different parts of the world.
3. Describe the different causes of climate change.
4. What are the factors that result in different climates in different parts of the world?
5. (Apply Scientific Reasoning) How might the speed of climate change affect the ability of life on Earth to adapt and survive?
6. For Biosphere to meet its goal, why was it necessary for it replicate a variety of climates?
The Solar energy and the greenhouse effect impact Earth's global climate system by increasing the temperature on the surface of the Earth. There are several factors such as green house effect and air pollution that result in different climates in different parts of the world.
What is green house effect?The greenhouse effect has been described as when gases in the earth's atmosphere has been trapped the heat from the sun that would otherwise escape into space. This concentration of the Solar energy has been trapped in the earth's lower atmosphere causes the temperature of the earth's surface to rise.
The greenhouse effect has been traps this heat energy in the earth's lower atmosphere. This could leads to increased temperatures on the surface of the earth and intense impacts on the global climate system.
Therefore, There are several factors such as green house effect and air pollution that result in different climates in different parts of the world.
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How much space does a red imported fire ant need to grow and reproduce
Answer:
The size of the sides is up to you – the thinner the sides are the less space the ants will have. It all depends on the species, but roughly between 1,5 and 3 centimetres (0,6-1,2 inches) is recommended. To make sure the formicarium will keep together we need something to fixate it with.
The main purpose of a multiple cloning site is:
1. To keep the plasmid from leaving the nucleoid region.
2. To ensure the plasmid is copied many times in the bacterial cell.
3. To provide a location where DNA can be inserted into a plasmid.
4. To make it possible to eliminate bacteria that have not been genetically modified.
5. To ensure that each daughter cell receives a copy of the plasmid during cell division.
The main purpose of a multiple cloning site is: (3)To provide a location where DNA can be inserted into a plasmid.
A multiple cloning site is a sequence in the DNA of an organism that consists the cut palindromic site for many restriction enzymes. This region is highly exploited in laboratories to insert DNA into the vector for its transmission into the host.
Plasmid is the closed circular double-stranded DNA molecule. It is particularly present in bacterial cells. It is an autonomously replicating genetic material i.e., it can replicate on its own. Plasmids are largely used as vectors for gene transfer.
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If the heart becomes damaged or weakened, how will this affect the body’s systems?
Answer:
If the heart becomes damaged or weakened, how will this affect the body's systems? The circulatory system will not function well, which will affect all other body systems.
Explanation:
what is the structural relationship between glucose and galactose?
The isomer of glucose is galactose. Only how their atoms are organized makes a difference. Stereoisomers of glucose and galactose exist.
The orientation of the hydroxyl group (OH) at carbon 4 distinguishes galactose from glucose most significantly in terms of structure. As isomeric monosaccharides (hexoses), glucose, galactose, and fructose have the same chemical formula but slightly different structures. Aldoses are glucose, galactose, and ketoses are fructose.Epimers are a class of carbohydrates that only differ in the position of the hydroxyl (or -OH) group at one position. Galactose and glucose are therefore epimers because they have the same configuration at all positions other than one.
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Product of process 3 in nucleus
Replication and transcription are typically carried out in the nucleus. The three products of these processes are DNA, mRNA, and rRNA. DNA is the product of replication, and RNA is the product of transcription.
What is a nucleus?In the eukaryotic cell, the nucleus is the central part of the cell. It contains the genetic material, such as the chromosomes, of the organism.
In the double membrane structure of the nucleus, DNA replication takes place. A copy is formed as a result of DNA replication from one DNA. In transcription, mRNA is formed from the gene (DNA). From nucleolar DNA, rRNA is formed. The gene splicing takes place in mRNA in nucleus.
The three products are DNA, mRNA, and rRNA, which are synthesized from the nucleus by the processes of DNA replication and transcription, respectively.
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Please guys i need help so baldy
1. Axon terminal
2. Node of Ranvier
3. Dendrites
4. Nucleus
5. Cell body
6. Axon hillock
7. Endoplasmic reticulum
8. Synaptic vesicle
9. Mitochondria
10. Microtubule
Why do male mammals risk having the testicals outside the main body?