Do whales need oxygen to survive?
Yes, whales need oxygen to survive. Like us, whales are mammals that breathe air into their lungs. Because they lack gills, they can't breathe underwater like a fish can.
A blowhole, or nostril, on top of their heads, allows them to breathe. While swimming or resting beneath the water, this enables them to take deep breaths by only exposing the tops of their heads to the air. The strong muscles that surround the blowhole close it tightly after each breath to prevent water from entering the lungs of the whale or dolphin.
Dolphins only have one blowhole, whereas large whales, with the exception of the sperm whale, have two blowholes.
Know more about whales here: https://brainly.com/question/12324633
#SPJ4
What is the ratio of purple flowers to white flowers 3 1?
The "masked" (recessive) genes from the F1 generation were allowed to mate, but only once, allowing the other three times to emerge with purple flowers. In generation F2, this led to a 3:1 ratio of purple: white flowers.
A ratio is a mathematical relationship between two numbers that, by definition, illustrates how frequently something has occurred or been present.
669 purple flowers equals
221 white flowers equals
The following procedures should be followed in order to calculate the ratio: Decide which values need to be expressed as a ratio. Make the formula, for instance, by dividing the ratio of two integers. If the percentage is required, multiply the result by 100 to make the computation simpler.
Learn more about ratio at
https://brainly.com/question/14352593
#SPJ4
The complete question is as follows
There are 669 purple flowers and 221 white flowers. What is the ratio of purple flowers to white flowers?
Part A Bipotential state Which of the following statements best describes the bipotential state of a developing fetus? Hints O a stage of development when the internal and external reproductive organs have developed into both male and female O a stage of development when the internal and external reproductive organs are only female O a stage of development when the internal and external reproductive organs are only male O a stage of development when the internal and external reproductive organs have the potential to be either male or female
The Bipotential state of the growing fetus is a stage of development when the internal and external reproductive organs have the potential to be either male or female. Correct option(C)
During fetal development after two months the generation of sex organs or gonads take place to determine the sex of the growing fetus.
Until about two months after fertilization the immature gonads of human embryos are potential means that they can develop either into testes or ovaries. Undifferentiated gonads of XX or XY individuals are apparently identical and can form either ovaries or testes.
This period of Bipotential stage is also known as indifferent stage of gonads development.
To know more about the fetal development visit at:
https://brainly.com/question/1311741
Evaluate the structure and function of the respiratory system to allow for passive transport for gas exchange
The respiratory system allows for passive transport for gas exchange as the body receives oxygen from the outside air; Additionally, waste gases such as carbon dioxide and water vapor are released outside the body into the air.
Respiration: The life-sustaining process in which gases are exchanged between the body and the surrounding atmosphere is known as gas exchange. More specifically, oxygen enters the body from the outside air; and waste gases like carbon dioxide and water vapor are released into the air outside the body. The respiratory system is primarily responsible for respiration. The exchange of gas is the other process. This is the biochemical process by which carbon dioxide and other waste gases diffuse from the blood into the air and oxygen diffuses from the air into the blood.
Know more about Respiration here: https://brainly.com/question/12605249
#SPJ4
What is a meter stick used for in biology?
A meter stick is a basic tool used in biology that is used to measure length, width and/or depth of biological specimens.
The meter stick is usually made of wood, plastic, or metal and is marked in metric units, with each centimeter being equivalent to one millimeter. The meter stick is an important tool for a variety of biological applications, such as measuring the size of a cell, measuring the distance between two points on a slide, and measuring the size of a specimen.
The meter stick is also used to measure the length of a specimen, such as a plant or animal. This is done by measuring the entire length of the specimen from one end to the other. The meter stick can also be used to measure the width of a specimen, such as a leaf or a flower. In addition, the meter stick can be used to measure the depth of a specimen, such as a pond or a lake.
Learn more about meter stick at :https://brainly.com/question/17312676
#SPJ4
or
Scientists theorize that all life started with simple prokaryotic organisms. New species continue to evolve
from existing species, creating the variety of life we see today. The following diagram shows the basic
process.
fungi
(oukaryotic,
unicellular,
multicellular)
protista
(eukaryotic,
uni-or
multicellular)
eubacteria
(prokaryotic,
unicellular)
animalia
(eukaryotic
multicellular)
universal
ancestor
plantae
(eukaryotic
multicellular)
archaebacteria
(prokaryotic,
unicellular)
Based on this diagram, do you think that organisms of the same order will share a stronger evolutionary
relationship than organisms that share only the same phylum? Explain your reasoning using the results of
your investigation.
The evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.
What is taxonomical hierarchy's?Taxonomic hierarchy is an organizational structure used to classify or categorize living organisms.
Of course, organisms that belong to the same order will have a closer evolutionary bond than those that belong to the same phylum alone. Taxonomy groups organisms in various ways, as we all are aware. Kingdoms are the highest level of classification, followed by phyla, classes, orders, families, and species. The similarities between organisms will become more specific with each succeeding unit. In other words, when organisms are further subclassified, they share similar traits.
The order of organisms belonging to the same phylum is not required. The class, phylum, and kingdom of any two organisms from the same order, however, will always be the same.
For instance, the cockroach order Blattodea and the human order Primates. These two belong to the phylum chordata. But we are aware of the differences between cockroaches and people.
However, another member of the primate order, such as the monkey and the chimpanzee, have stronger evolutionary ties to humans and share more traits with them.
Therefore, the evolutionary relationship is stronger the more similarity. The taxonomical hierarchy's lower levels show more similarity. Thus, the organisms of the same species exhibit the greatest degree of similarity.
To learn more about taxonomical hierarchy's
https://brainly.com/question/1304906
#SPJ1
Later, heat rising from below causes part of the metamorphic rock to melt, forming magma. what is it?
Metamorphism occurs when the heat rising from below causes the part of the metamorphic rock to melt, forming magma.
What is metamorphic rock?Metamorphic rocks are formed from other rocks which substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Metamorphic rocks are formed when the rocks are subjected to high heat, high pressure, hot mineral-rich fluids or, more commonly, the combination of these factors.
Metamorphism occurs when the solid rock undergo changes in the composition and texture without mineral crystals undergoing melting, which is how the igneous rock is generated.
If there is too much heat or pressure applied, the rock will melt and become magma. This will result in the formation of an igneous rock, and not a metamorphic rock.
Learn more about Metamorphic rocks here:
https://brainly.com/question/19930528
#SPJ1
What are 2 reasons a mutation can happen?
Viral infection, mutagen exposure, or errors in DNA replication during cell division can all lead to mutations. Viral infection, mutagen exposure, or errors in DNA replication during cell division can all result in mutations.
Changes to an organism's DNA sequence are referred to as mutations. Somatic mutations those that take place in body cells cannot be passed on to progeny, whereas germline mutations those that happen in eggs and sperm can.
When the amount or arrangement of nucleotides in a gene is altered, mutations result. A nucleotide can be doubled, deleted, altered, replaced, or any combination of these changes. In general, mutation has little to no impact, but when it does, the change may be fatal or result in disease.A beneficial mutation will rise in frequency within a population until it becomes the norm.
Learn more about mutation here:
https://brainly.com/question/17130462
#SPJ4
1. The South thought that it could win the war because a. it had skilled military men and could fight a defensive. b. Great Britain was on its side. c. cold weather in the North would make military training difficult. d. they could arm slaves and send them into battle first.
Answer: The answer is D.they could arm slaves and send them into battle first.
Explanation: This is the right answer because if you really think and read then this answer will make more sense
Thank you!!!
PLEASE GIVE CREDIT IF YOU USE MY IDEA (Meaning use this answer)
Describe at least 4 concepts learned this unit in genetics. Explain why each concept is important. (Digital biology 10th grade)
Transcription and gene regulatory networks. coding and noncoding RNA mechanisms of action and function. protein synthesis are 4 concepts learned this unit in genetics.
What is genetics?
The study of genes and heredity, or how particular characteristics or traits are passed from parents to offspring as a result of changes in DNA sequence, is known as genetics. A gene is a section of DNA that has the instructions needed to create one or more molecules that support bodily function. A double helix, or corkscrew-shaped ladder, is how DNA is shaped. The bases are pairs of the four building blocks adenine, thymine, guanine, and cytosine, and the two ladder rails are referred to as the backbones. The instructions for constructing molecules, the majority of which are proteins, are included in the sequences of these nucleotides. According to researchers, there are around 20,000 genes in humans.
Read more about genetics:
https://brainly.com/question/12111570
#SPJ1
What is hypertension with heart disease?
Hypertensive heart disease is a long-term condition that develops over many years in people with hypertension.
When your high blood pressure (hypertension) is not controlled, it can lead to a variety of health issues, including heart failure and conduction arrhythmias. Hypertensive heart disease is caused by persistently high blood pressure (over 120/80 mmHg). Heart disease risk goes up as people get older and continue to have high blood pressure. People over the age of 65 are more likely to develop heart failure.
Your heart has to work harder to pump blood through your body when you have high blood pressure for an extended period of time.
Know more about hypertension here: brainly.com/question/29799896
#SPJ4
In the digestive system many large molecules, such as proteins, are broken down into much smaller molecules. State what happens to these smaller molecules following digestion.
Smaller molecules are taken up into the bloodstream by epithelial cells that line the walls of the small intestine. The waste continues to the colon where water is absorbed and the dried waste is compacted into feces. It is stored until excreted from the anus through the digestive system
The digestive system breaks down the food we eat into its simplest forms: glucose (sugar), amino acids (which make up protein), and fatty acids (which make up fat). Absorbed by the flow, the nutrients are carried to every cell in the body.
The human digestive system consists of the gastrointestinal tract and the accessory digestive organs. Digestion breaks down food into smaller and smaller components until they are absorbed and absorbed by the body.
For more information on digestive system , visit :
https://brainly.com/question/29485648
#SPJ4
Why is firewood considered a limited resource ?
A. People are not practicing sustainable wood harvesting
B. Wood is used in place of money to trade for food
C. Fuelwood allows people to purify their water by boiling it
D. Fuelwood allows people to cook their food .
An increase in water-borne diseases could possibly be alleviated by.
A. Adequate sewage treatment facilities for growing populations.
B. Very rapid growth of large cities.
C. Sufficient fuelwood
D. Both A and D.
Which of the following would not be a characteristic of a country on the least developed countries list ?
A. Extremely poor nutrition, health, and education
B. Extremely high poverty levels- making about $2.00 per day .
C. Distinct developmental progress
D. Aided by the UN finically
Most countries are tending towards replacement level fertility rates by 2050. What does this mean for world population growth in the future past 2050?
A. Population growth will become population loss
B. Population growth will eventually stop
C. The population will continue to grow
D. None of the above .
I know for the last question the answer isn’t A .
I know question three isn’t answer B.
I know question 1 isn’t answer C.
Answer: A- People are not practicing sustainable wood harvesting
A- Adequate sewage treatment facilities for growing populations.
C- Distinct developmental progress
D. None of the above .
Explanation:
What are the genotypes of the F2 generation?
Answer:
The genotypes of the F2 generation depend on the genotypes of the parents in the F1 generation.
Explanation:
If the F1 generation is produced by crossing two individuals with different genotypes, the F2 generation will have a variety of genotypes.
For example, if the F1 generation is produced by crossing a homozygous dominant individual (AA) with a homozygous recessive individual (aa), the F2 generation will have a 1:2:1 ratio of genotypes: one quarter will be homozygous dominant (AA), half will be heterozygous (Aa), and one quarter will be homozygous recessive (aa).
If the F1 generation is produced by crossing two heterozygous individuals (Aa and Aa), the F2 generation will have a 3:1 ratio of genotypes: three quarters will be heterozygous (Aa) and one quarter will be homozygous recessive (aa).
It is also possible for the F1 generation to be produced by crossing two individuals with more complex genotypes, in which case the F2 generation will have a variety of genotypes based on the combination of the parents' genotypes.
To learn more about F2 generation:
https://brainly.com/question/18952047
https://brainly.com/question/2748200
When a whale migrates from one pod to another pod, alleles in each gene pool become more similar to each other. This is an example of which mechanism of evolution. Mutation Natural Selection Genetic Drift Gene Flow
This is an example of genetic drift mechanism of evolution.
When whales migrate from one pod to another pod, unique alleles found in each gene pool become more similar over time. This phenomenon is known as genetic drift, which is a mechanism of evolution.
Genetic drift is the result of random fluctuations in the frequency of alleles, which can be caused by a variety of factors, including migration, natural disasters, and population size.
As whales migrate and the gene pools of different pods become more similar, the genetic diversity of the overall population decreases. This process can have a lasting impact on the survival of a species.
To learn more about genetic drift, click here:
https://brainly.com/question/1027688
#SPJ4
What specific host gene functions would you consider as strong candidates for such methylation by infecting viruses
Many viruses specifically methylate genes associated with the immune response, thus dampening that response and enhancing viral infectivity.
What are genes and what do they do?A gene is the most fundamental physical and functional element of heredity. DNA is the building block of genes. Some genes serve as blueprints for the creation of proteins. Many genes, however, do not code for proteins. Genes in humans range in size from a few hundred DNA bases to over 2 million bases.
What are the four primary roles of genes?Gene functions include:
Genes are genetic material components and consequently units of heredity.They have control over an individual's morphology or phenotype.Gene replication is required for cell division.Hereditary information is passed down through generations via genes.Learn more about gene functions to visit this link
https://brainly.com/question/8334911
#SPJ4
Full Question: What specific host gene functions would you consider as strong candidates for such methylation by infecting viruses?
Many viruses specifically methylate genes associated with the immune response, thus dampening that response and enhancing viral infectivity.
Many viruses specifically methylate protective genes, thus enhancing viral infectivity.
Many viruses specifically methylate genes associated with the cell cycle, thus activating DNA amplification and enhancing viral infectivity.
Many viruses specifically methylate genes associated with apoptosis, thus dampening that response and enhancing viral infectivity.
Corn seeds with identical genetic information were planted on two adjacent farms. The corn plants on one farm were well fertilized and grew large, while the plants on the other farm were not given fertilizer and did not grow as large. The best explanation for these observations is that
The best explanation for these discernments is that environmental conditions impact quality verbalization.
The vitally immediate reason for biodiversity misfortune is land use change (fundamentally for enormous scope food creation) which drives an expected 30% of biodiversity decline all around the world. Second is overexploitation (overfishing, overhunting, and overharvesting) for things like food, prescriptions, and lumber which cruises all over 20%.
The zygote contains all the data fundamental for the development, improvement, and inevitable multiplication of the organic entity. Human sexual multiplication happens in fundamentally the same as way to other physically replicating creatures.
Corn portions are the products of corn (called maize in numerous nations). Maize is a grain, and the portions are utilized in cooking as a vegetable or a wellspring of starch. The portion involves endosperm, microorganisms, pericarp, and tip cap.
To learn more about identical genetic here
https://brainly.com/question/15382012
#SPJ4
Which statement does not accurately describe what occurs during the process of meiosis?
A) Meiosis produces four identical gametes, either egg or sperm.
B) Genetic variation among sexually reproducing organisms is enhanced by meiosis.
C) Meiosis produces gametes with the haploid chromosome number.
D) All stages of meiosis follow DNA replication
Answer:
D cause not all stages of meiosis follow DNA replication.
As unwinding of the helix occurs during DNA replication, tension referred to as ________ is created ahead of the replication fork. This tension is relieved by the action of ________.
As unwinding of the helix occurs during DNA replication, tension referred to as supercoiling; is created ahead of the replication fork. This tension is relieved by the action of DNA gyrase.
DNA replication, as used in molecular biology, is the biological process that creates two identical copies of DNA from a single original DNA molecule. All living things replicate their DNA, which is the primary mechanism for biological heredity.
This is necessary for cell division during tissue development and repair, and it also guarantees that each new cell gets a copy of the DNA. DNA replication is necessary because the cell's ability to divide makes it different from other organisms.
Learn more about DNA replication to visit this link
https://brainly.com/question/16464230
#SPJ4
Why do cancer cells divide and multiple uncontrollably?
Answer:
Most cancer-causing DNA changes occur in sections of DNA called genes. These changes are also called genetic changes. A DNA change can cause genes involved in normal cell growth to become oncogenes. Unlike normal genes, oncogenes cannot be turned off, so they cause uncontrolled cell growth.
True or False: Before making any decision (includes environmental), it
necessary to evaluate all risks and make mathematical models
False. Not all decisions require risk evaluation or mathematical modeling.
What is evaluation?Evaluation is the process of examining and assessing a product, system, service, or program to determine its worth and effectiveness. It is a systematic process that involves identifying and measuring objectives, gathering information, analyzing data, and drawing conclusions. Evaluation is important to determine if a program is meeting its intended goals and helping to improve outcomes. Evaluation can also be used to inform decisio-making, identify areas of improvement, and provide feedback on performance. Evaluation helps to ensure that resources are being used effectively and efficiently. It can also provide guidance for future investments, help to set objectives and priorities, and provide evidence-based information for the development of policies and programs.
To learn more about evaluation
https://brainly.com/question/13860025
#SPJ1
The objects in this photo belong to which major sphere of the Earth system?
What are the advantage and diadvantage to a plant pecie that i pollinated by only one type of pollinator?
The advantages of one type pollinator are increased pollination efficiency, reduced competition, and genetic stability, while the disadvantages are high dependency, limited distribution, and low genetic diversity.
A plant species that is pollinated by only one type of pollinator may have increased efficiency, reduced competition during the pollination process, as well as genetic stability. However, it also has a high dependency on that specific pollinator species. If the population of the pollinator declines, the plant species may also decline or become extinct. Additionally, this type of plant species typically has a limited distribution and is more vulnerable to environmental changes that can affect the distribution or abundance of its specific pollinator. It also has low genetic diversity which can make it more vulnerable to disease or other environmental pressures.
To learn more about pollination visit: https://brainly.com/question/3431390
#SPJ4
Your question seems incomplete, but I assume the question was:
"What are the advantages and disadvantages to a plant species that is pollinated by only one type of pollinator?"
what system works with the respiratory system to circulate blood and oxygen throughout the body
The circulatory system works with the respiratory system to circulate blood and oxygen throughout the body.
The cardiovascular system (also called the circulatory system) transports blood from the heart to the lungs, where it is oxygenated. After receiving oxygen, blood is pumped out of the heart and into the body's arteries. Veins return blood that is low on oxygen to the heart, where the pumping process can begin again. Your body's organs, muscles, and tissues can't function properly without a strong circulatory system. The job of the circulatory system is to transport blood all over the body. The body's organs, muscles, and tissues would not function to keep you alive if the blood didn't circulate through them.
Getting rid of waste is another function of the circulatory system. Examples of such trash are:
Oxygen used in respiration produces carbon dioxide.
Excretions and waste products from your body's systems.
Food and drink scraps are waste products.
Want to know more about the respiratory system visit the link which is given below;
https://brainly.com/question/4190530
#SPJ4
How do you release chronically tight muscles?
Chronically tight muscles can be release by Stretching ,Massage ,Foam Rolling and Strengthening.
Chronically tight muscles can be caused by over using muscle , poor posture , stress , anxiety and depression . This stiffness can commonly occurs after extensive exercise or lifting weights. this stiffness can also occurs after periods of inactivity, like prolonged sitting and sleeping for long hours in the bed.
In general , Muscle pain can effect almost every part of your body, which may include your neck, back, legs and even your hands. These pain can be relived by various medication that includes relaxant and ointments that soothes the pain .
To learn more about Muscle pain, here
brainly.com/question/30126210
#SPJ4
Where does the light reaction happens in plant?
The light reactions of plants are the photochemical reactions that take place in the thylakoid membrane of chloroplasts and convert light energy into chemical energy in the form of ATP and NADPH.
Light reactions in plants occur in the thylakoid membranes of organelles referred to as chloroplasts. The light processes are mostly controlled by photosystems, sizable complexes of proteins and pigments (light-absorbing molecules) that are designed to capture light. The light reactions processes include the plants division of water into oxygen, protons, and electrons, and take place in the chloroplast thylakoid membrane. The light reactions occur in the chloroplast thylakoid membrane and involve the splitting of water into oxygen, plants,protons and electrons.
learn more about light reactions here:
https://brainly.com/question/26623807
#SPJ4
Beth and Eric, two veterinary assistants, are discussing their duties. Beth says the vet assistance will take the animals respiration rate and draw blood during a physical exam. Eric says the vet assistance will take the animals temperature, heart rate, weight and respiration rate during a physical exam. Who is correct
To evaluate your pet's hydration status, veterinarians will marginally lift the skin at the rear of the neck to perceive what amount of time it requires to adjust back properly (skin turgor test). A postponed skin tent can demonstrate a lack of hydration.
It gives data that assists with assessing the patient's actual status. The key parts are distinguishing the essential or introducing issue. Clinical history, ecological history, and checking on body frameworks are remembered for a decent history.
In clinical terms, "examination" signifies taking a gander at the individual or body part. It is the most important phase in an actual test.
While the turgor tension in many cells is intrinsically certain, it is negative in the xylem of a coming-to-pass plant. This isn't really to be expected since the xylem is a vascular tissue liable for the conduction of water and supplements from the roots up to the shoots and leaves.
To learn more about dehydration here
https://brainly.com/question/12261974
#SPJ4
How long does it take to be affected by cyanide?
Answer:
The patient can present with symptoms as quickly as one minute after inhalation and within a few minutes of cyanide ingestion. If the hydrogen cyanide was inhaled, the victim might detect a bitter, almond odor, which is discernible by approximately 60% of the population.
Explanation:
During this stage of interphase, a cell prepares for cell division by making proteins and ATP it will use: *
The process of cell division is a complex process that requires the cell to prepare in many ways. During interphase, a cell prepares for cell division by synthesizing proteins and ATP, which it will use as energy sources during division.
Proteins are essential for division because they serve as structural components of the cell and are responsible for maintaining the cell’s shape. During interphase, the cell manufactures the proteins it needs for division. These can include cytoskeletal proteins, which give the cell structure and help it move, and enzymes, which help with chemical reactions. Without these proteins, the cell would not be able to divide correctly.
ATP is also essential for cell division. During interphase, the cell manufactures ATP, which it uses for energy during division. ATP is the energy currency of the cell and is used to power the metabolic processes required for cell division. It also helps the cell move and change shape during division, which is necessary for the process.
Learn more about cell division at :https://brainly.com/question/29773280
#SPJ4
How is most ATP formed during respiration?
Most of the ATP produced by aerobic cellular respiration is made by oxidative phosphorylation
Oxidative phosphorylation is responsible for the majority of the ATP generated by aerobic cellular respiration. Protons are pumped through a membrane to produce a chemiosmotic potential using the energy released. Then, ATP synthase is engaged by this potential to synthesis ATP from ADP and a phosphate group. During aerobic respiration, glucose and oxygen combine to produce ATP, which the cell can utilise. As products, water and carbon dioxide are produced. In the general equation for aerobic cellular respiration, glucose and oxygen combine to create ATP. Oxidative phosphorylation is the biochemical cycle that generates a most net ATP per molecule of glucose. The majority of ATP synthesis takes place during cellular respiration in the mitochondrial matrix, producing about 32 ATP molecules for every glucose molecule.
For such more questions on ATP :
brainly.com/question/14637256
#SPJ4