Answers
Related Questions
The volume of a sphere is given by the formula 4r3/3. The surface area of a sphere is
given by 4 2. The surface area to volume ratio of a sphere of diameter 2.6 mm is
Answers
Answer:
The surface area to volume ratio of a sphere of diameter 2.6 mm can be calculated using the formulas for the volume and surface area of a sphere. The volume of a sphere is given by the formula 4πr3/3, where r is the radius of the sphere. The surface area of a sphere is given by 4πr2. In this case, the radius is 1.3 mm (half of 2.6 mm), and the surface area to volume ratio is 4π(1.3 mm)2/4π(1.3 mm)3 = 3/2π.
Explanation:
The volume of a sphere can be calculated using the formula V = 4/3 * π * r^3, where V is the volume and r is the radius of the sphere.
The surface area of a sphere can be calculated using the formula A = 4πr^2, where A is the surface area and r is the radius of the sphere.
Given that the diameter of the sphere is 2.6 mm, we can calculate the radius by dividing the diameter by 2:
r = 2.6 mm / 2 = 1.3 mm
Now, we can calculate the volume of the sphere using the formula:
V = 4/3 * π * (1.3 mm)^3
We can also calculate the surface area of the sphere using the formula:
A = 4π * (1.3 mm)^2
The surface area to volume ratio (SA:V) of a sphere is the ratio between the surface area and the volume. To calculate the SA:V ratio of the sphere, we divide the surface area by the volume:
SA:V = A/V
It's important to note that the ratio will be dimensionless because surface area and volume both have units of length cubed, thus canceling each other out in the ratio.
A circular double-stranded DNA molecule contains 4200 base pairs. In solution, DNA is in a B-form helix, with about 10.5 base pairs/turn. The DNA has 12 superhelical turns. What is its superhelix density
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Answer:
The correct answer is - 3 × 10⁻²
Explanation:
first find LKo = length of BDNA/ 10.5 bp/turn
= 4200/10.5
= 400
now calculate Δ LK= LK - LKo
ΔLK = 412-400
ΔLK = 12
now, superhelix density = ΔLK/LKo
⇒ 12/400 = 0.03
= 3×10⁻²
Thus, the correct answer is - 3 × 10⁻²
Photosynthesis is possible only in the stems. True False
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Answer:
false
Explanation:
it happens in the whole plant
Answer:
False
Explanation:
It occurs in all parts of the plant except root hair cells.
Deer mice are usually dark brown and live in forests with dark soil. However, the deer mice in the Sand Hills of Nebraska are lighter brown and live in an area with light, sandy soil.
Based on this information, what ,begin emphasis,most,end emphasis, likely caused the change in the Sand Hills deer mice?
Answer options with 4 options
A.
Lighter colored mice were preferred by females.
B.
Lighter colored mice came from snowy habitats in the north.
C.
Lighter colored mice had more dominant genes in their new habitat.
D.
Lighter colored mice were more likely to avoid predators and to reproduce.
Answers
Lighter colored mice were more likely to avoid predators and to reproduce. Therefore, option (D) is correct.
The lighter brown coloration of the deer mice in the Sand Hills of Nebraska is likely an adaptation that provides them with a survival advantage in their specific habitat. The light, sandy soil in the area may offer better camouflage for lighter colored mice, making them less visible to predators and increasing their chances of survival.
As a result, these mice would have a higher likelihood of successfully reproducing and passing on their lighter coloration traits to future generations.
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Is the scorpion vertebrate ?
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Answer:
scorpions are invertebrates but are insects
Answer:
A animal that is an vertebrate has a spine, and backbone. Some of these animals can be humans, dogs, cats, etc. But most 6 legged creatures, 8 legged creatures do not have a backbone.
To answer your question, no, scorpions are not vertebrates because they do not a spine and backbone.
Define mine reclamation. How do you think this might affect the cost of mining? Is it expensive, or not?
Answers
Mine reclamation is the process in which areas used for mining are recovered and modified to an economic or ecological useful stage. That`s an expensive and delicate process, which requires studies and analysis of the area, besides all the cleaning which is supposed to be done so the land can be used for other purposes again and monitoring after the reclamation to make sure it was successful.
Show the reciprocal cross: A red-eyed female (homozygous) and a white-eyed male. How many offspring will have white eyes and what is their sex?
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When we see the reciprocal cross between a red-eyed female (homozygous) and a white-eyed male,we observe that none of the offspring will have white eyes. Additionally, the sex of the offspring will be half male and half female since the ratio of males to females is 1:1.
The reciprocal cross for a red-eyed female (homozygous) and a white-eyed male can be shown as follows:Female (XrXr) x Male (XwY). Females have two X chromosomes and males have an X and a Y chromosome. Red eyes are dominant to white eyes; therefore, we use Xr to represent red eyes and Xw to represent white eyes.
The offspring are as follows:All F1 females are heterozygous (XrXw).All F1 males are hemizygous (XrY).The F1 generation will have red eyes since the dominant allele is present.
None of the F1 individuals will have white eyes as the recessive allele is not present in the F1 generation.
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what are general application of phylum nematoda?? please help me
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They are widely distributed, aquatic or terrestrial, parasitic or free-living.
Their body is elongated, cylindrical, unsegmented, worm-like, bilaterally symmetrical and tapering at both ends.
They are triploblastic animals with perivisceral cavity more extensive than that of platyhelminths.
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Come up with your own " pre-flight" check before driving a car. Describe the importance of each step
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~~9. Using the appropriate osmotic terms (hypertonic, hypotonic, or isotonic) describe what would happen to each organism in the following settings: on. A single-celled freshwater protist is placed into a beaker of salt water. (3 points) b. A salt-water snail is mistakenly put into a freshwater tank. (3 points) c. A head of lettuce is placed soaked in a sink of salt water. (3 points) d. A bunch of carrots are placed soaked a sink of distilled water. (3 points)
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Answer:hh
Explanation:hhh
PROMPT: Write an essay in which you explain how Terra Snider builds an argument to
persuade her audience that middle and high schools should open later. In your essay, analyze
how Snider uses one or more of the features in the directions that precede the passage (or
features of your own choice) to strengthen logic and persuasiveness of her argument. Be sure
that your analysis focuses on the most relevant features of the passage.
Your essay should not explain whether you agree with Snider's claims, but rather explain how
Snider builds an argument to persuade her audience.
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The assignment wants to know how you interpret the argument and how you develop an essay. For that reason, I can't write your essay, but I'll show you how to write it.
Essay structureIntroduction: Introduce the subject that the essay will address, that is, show who Terra Snider is, what she stands for, and how she wants to persuade the public to agree with her. The introduction must be a short paragraph.Body: Write at least two paragraphs. These paragraphs should be long because you will need to detail Snider placements. The first paragraph shows how she uses the resource known as logos to show the logic of her argument, and how she uses the resource known as ethos to show her knowledge of the subject. In the second paragraph, reinforce how Snider presents evidence to show how the arguments contrary to hers are incorrect and do not represent something that should be encouraged in society.Conclusion: Write one more short paragraph where you address the most important points of your essay and reinforce whether or not Snide is effective in her argument.Below you can see an example of how your introduction might be written.
Terra Snider is an activist and co-creator of the movement formed by parents and teachers who seek a change in school schedules. Snider says that classes should start later, as they would optimize students' sleep and promote a series of positive effects.
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As a persons ages his or her bones tend to become brittle. This happens as ______ is lost from bone
A.Protein
B.Iron
C.Marrow
D.Calcium
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Answer:
D
Explanation: the bones can becomew brittle from not haveing calcium
What is the difference from adhesion and cohesion ?
Answers
Answer:
see answer in the explanation
Explanation:
Adhesion is the force of attraction between different substances, like water.
Cohesion is the force of attraction between molecules of the same substance.
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.
The anole lizard is a tree-dwelling reptile that has adapted to live almost anywhere. Because the rain forest is rich with species of anole, many lizards are competing for the same food and the same living space. Oftentimes, anoles will avoid competition by occupying different portions of the rain forest. For example, one species of anole may live in the canopy, while another species live near the forest floor. This behavior is an example of _____.
predator differentiation
niche partitioning
ecological equivalent
evolutionary response
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The anole lizard is a tree-dwelling reptile that has adapted to live almost anywhere. Because the rain forest is rich with species of anole, many lizards are competing for the same food and the same living space. Oftentimes, anoles will avoid competition by occupying different portions of the rain forest. For example, one species of anole may live in the canopy, while another species live near the forest floor. This behaviour is an example of- niche partitioning.
What is niche partitioning?
The process by which competing species use the environment differently to enable them coexist is known as niche partitioning in ecology. According to the competitive exclusion principle, two species with identical niches (ecological roles) will always drive the other one to extinction if they compete.
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Definition: Meat extract, Yeast extract, Peptone (pepsic, tryptic and papainic), Agar-Agar ,gelatin Please help me necessary
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Answer:
Explanation:
Meat extract: Meat extract is a concentrated meat stock that is made by boiling meat in water and then straining out the solids. The resulting liquid is then further processed to produce a thick, flavorful extract that is used as a base for soups, gravies, and other dishes.
Yeast extract: Yeast extract is a natural flavoring made from yeast cells that have been broken down using enzymes or heat. It is commonly used as a flavoring agent in soups, stews, sauces, and other savory dishes.
Peptone: Peptone is a complex mixture of amino acids that is produced by the partial hydrolysis of proteins. It is commonly used as a nutrient source in microbiology and biotechnology applications.
Agar-Agar: Agar-Agar is a gelatinous substance derived from red algae. It is commonly used as a gelling agent in food and pharmaceutical products.
Gelatin: Gelatin is a protein that is derived from collagen, which is found in the connective tissue of animals. It is commonly used as a gelling agent in food products such as jellies, marshmallows, and gummy candies.
A hypothesis is a(n) ______________, while a theory is a(n) ______________.
Answers
Answer
this is a little vague. for hypthesis, you could use guess, assumption, or conjecture. for theory, you could use prinicple or well-supported idea.
Explanation:
Explanation: According to the dictionary Hypothesis is a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation, while a theory is a supposition or a system of ideas intended to explain something, especially one based on general principles independent of the thing to be explained.
Toluene crosses pure lipid bilayers many hundreds of times faster than a related compound, phenylalanine. Suggest two different properties of these molecules that would account for this difference.
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Answer:
The lipid bilayer is hydrophobic that is hydrophobic and it can easily cross the lipid bilayer.
Toulene is a hydrophobic and neutral molecule compound so it can easily pass through the bilayer. It is an aromatic compound with a methane group attached to the benzene ring. It is smaller in comparison to Phenylalanine.
Phenylalanine-- It is an amino acid with a benzene ring attached to it. This amino acid is less hydrophobic than the aliphatic amino acids. Because of its less hydrophobic nature, it travels slowly compared to Toluene. It is also larger and has amino and carboxyl groups attached to it. On the other hand, Phenylalanine is a polar compound which has -COOH and -NH2 group. which prevents its delay in its transport across the lipid bilayer.
National Park Service organic Act pros and cons
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The National Park Service Organic Act has been instrumental in the preservation and management of national parks, it is important to address the limitations in funding, strike a balance between conservation and visitor use, and foster constructive relationships.
The National Park Service Organic Act, enacted in 1916, has had both pros and cons in its impact on the management and preservation of national parks in the United States. One of the significant advantages of the Organic Act is its emphasis on the preservation of natural and cultural resources. By prioritizing conservation, it ensures that these invaluable assets are protected and maintained for future generations to appreciate.
The act also established a centralized management agency, the National Park Service, which has brought consistency in policies and standards across various parks. This unified approach has facilitated efficient and effective management practices. Another positive aspect of the Organic Act is its focus on public access and enjoyment.
This promotes a greater appreciation for the environment and fosters a sense of stewardship. However, the Organic Act does have some drawbacks. Insufficient funding often poses a challenge for the National Park Service, leading to limited resources for park maintenance, visitor services, and conservation efforts. This can impact the quality of visitor experiences and the ability to adequately protect and preserve park resources.
Another potential downside is the delicate balance that the act aims to strike between conservation and visitor use. Managing the increasing demands of visitors while minimizing environmental impacts can be a complex task, resulting in conflicts and challenges for park management. Striking a balance between the needs of local communities and the goals of park preservation can be an ongoing challenge that requires thoughtful engagement and collaboration.
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All topsoil was destroyed after a volcanic eruption. Which option best describes what happened as the first organisms recolonized the land? Responses Trees begin to regrow shortly after the lava has cooled from the eruption. Trees begin to regrow shortly after the lava has cooled from the eruption. Seeds arrive by wind, and roots begin to break down rock to form soil. Seeds arrive by wind, and roots begin to break down rock to form soil. Wildflowers and grasses take root in the new hard rock. Wildflowers and grasses take root in the new hard rock. Shrubs and bushes are able to recolonize the land early on. Shrubs and bushes are able to recolonize the land early on.
Answers
Answer:
D
Explanation:
The seeds formed into trees whitch then broke up the dried lava and colonized the land.
PLEASE HELP!!!
What species that has been studied in great detail and is used to understand specific phenomena in biology?
Answers
Answer:
Species that has been studied in great detail and is used to understand specific phenomena in biology are Model organism .
Explanation:
MODEL ORGANISM - A model organism (often abbreviated to model) is a non-human species that has been extensively studied in order to better understand specific biological processes, in the hope that observations made in the model organism can lead to new understanding of the workings of other organisms. When human experimentation is either impossible or immoral, model organisms are commonly used to study human disease. The shared descent of all living species, as well as the survival of metabolic and developmental processes and genetic material during evolution, make this strategy possible.
Although studying model organisms can be beneficial, caution should be exercised when extrapolating results from one organism to another.
Viruses, as well as model organisms from all three realms of life, are included. Escherichia coli (E. coli) is the most widely studied prokaryotic model organism, having been studied for more than 60 years.
It's a common gram-negative gut bacterium that can be easily and cheaply grown and cultured in a laboratory environment. It is the most commonly used organism in molecular genetics, as well as an important species in biotechnology and microbiology, where it has acted as the host organism for most recombinant DNA research.
Hence , the answer is model organism .
Is it a scientific theory or a scientific law that the characteristics of living things change over time?
Answers
Answer:
Scientific Theory
Explanation:
The statement "the characteristics of living things change over time" refers to the concept of biological evolution, which is widely accepted as a scientific theory in the field of biology. In scientific terms, a theory is a well-substantiated explanation of a natural phenomenon that is supported by extensive evidence, experimentation, and scientific consensus. The theory of evolution, proposed by Charles Darwin and further developed over time, provides a comprehensive explanation for the diversity and change in the characteristics of living organisms. It is supported by a vast body of evidence from various scientific disciplines, including genetics, paleontology, comparative anatomy, and molecular biology.
In contrast, scientific laws describe observable patterns or regularities in nature that are often expressed as mathematical equations or principles. Laws, such as Newton's laws of motion or the laws of thermodynamics, describe specific relationships or behaviors in the physical world.
Therefore, the statement about the characteristics of living things changing over time aligns with the theory of evolution, rather than being described by a scientific law.
Hope this helps!
Which atmospheric layer prevents meteroids from reaching earths surface
Answers
Answer: Mesosphere layer i believe
Explanation: i had to do an essay on this before but i forgot alot of it
Answer:
Mesosphere
Explanation:
The temperature drops in this layer to about -100 degrees Celsius. This is the coldest region of the atmosphere. This layer protects the earth from meteoroids.
the length and breadth of a rectangular Courtyard is 90 m and 42 m find the distance covered by a boy if it takes 5 rounds of courtyard
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Answer:
Area = L × B
= 90 × 42
= 3780 m
According to the question
He takes 1 round in 3780m
So ,
5 round = 5 × 3780
=18900
Explanation:
Pigeon breeders prize certain looks of their pigeons. They know that pairing certain pigeons results in offspring that exemplify the looks of their parents. Which of Darwin’s four observations applies to this example?Observation 1Observation 2Observation 3Observation 4
Answers
The four key points of Darwin's evolution theory are the following:
-Variation in populations
Individuals of a determined species are not equal, there are small variations between individuals, even if they are related. They may vary in color, size, weight, and other characteristics. This happens because even individuals from the same species have different genetic makeups.
-Inherited traits
Every species has determined traits that are inherited. These traits are passed from parents to offspring and those who help improve the odds of survival are more likely to be passed to the subsequent generations (adaptation)
Only traits that are genetically encoded can be inherited to the next generations, those who are developed through environmental factors are not inherited.
-Selection
Some individuals have inherited characteristics that help them survive and produce offspring. For example, individuals with colors that allow them to camouflage and avoid predators are more likely to survive and reproduce than those that do not have camouflage. As a result, the genes of the individuals with better odds of survival will become more common in the population.
-Time
Over time, selection produces changes within the species, usually, these changes are not observed until many generations have passed and are the result of successful variations accumulated through time.
Breeders know that if they breed certain pigeons, their offspring will show the traits they are interested in, which means that the offspring will inherit the traits from their parents. This scenario follows the inheritance of traits observation.
2
3
3
4.5
2.2
3.3
1.5
1.5
1.5
Explanation:
Ur welcome :D
please help. Due in the morning.
Answers
Answer: See below
Explanation:
The Male P1 Mouse: BB
The Female P1 Mouse: bb
The first photo shows the genotype of the F1 generation, they are now heterozygous because they contain different alleles (Bb).
The black B is the dominant trait so they will all be black because they all have that B allele.
The second photo shows the F2 generation and shows that one of the four offspring would have bb which would be white while all others will be black.
Human impact on environment daily which of the following correctly identifies the type of impact that humans have on the environment
Answers
Answer:
humans have a negative impact on the environment
Explanation:
This is because everyday humans overuse earth's resources and realsense lots of harmful gasses in the atmosphere
Why do individuals of the same species have different characteristics
Answers
because they carry different mutations.
2.) Mother: Hybrid Long Tail
Father: Hybrid Long Tail
I
What are the possible genotypes of the offspring?
What are the possible phenotypes of the offspring?
Answers
What are the possible phenotypes of the offspring is long tail
which characteristic is the same for all electromagnetic waves
Answers
Answer:
its frequency
Explanation:
their frequencies remain unchanged but their wavelength changes when the wave travels from one medium to another.