Bird that migrates from its arctic breeding grounds to antarctica, covering over 25,000 miles.
Answers
Arctic terns are the birds that migrates from its arctic breeding grounds to Antarctica, covering over 25,000 miles.
Temperature variations in the polar regions are less pronounced than in other parts of the world. The number of daylight hours varies greatly in different places, though. The Arctic and Antarctica receive about 24 hours of sunlight in the summer. Wintertime is nearly completely dark. Terns move south in quest of the summer sun. Birds can see fish or insects more clearly because sunlight makes the ground and ocean's surface more visible. The sea is typically calmer during the summer, which makes it easier for birds to fly.
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Related Questions
What is the effect when one part of a system changes?
Answers
Answer:
The entire system changes or could stop working.
Explanation:
When one part of the system changes, it may affect the entire system with a systematic consequence of the effective operation of the system.
What is a System?A system may be defined as the arrangement of things or objects that are gathered together and working as parts of a mechanism or an interconnecting network.
When any alteration will be made at any part of the system, it may affect the working of the whole system with respect to the type of alteration made.
Sometimes, this alteration is also responsible for the termination of the entire system.
Therefore, it is well described above.
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For the decay processes below, describe the following:
• What happens during the decay? Include what happens in the nucleus of the
parent element
What special particle(s) is/are produced, aside from the daughter element?
• How can you use the parent element to determine the daughter element by
referring to the periodic table?
.
a. Alpha decay (3 pts)
b. Beta decay (3 pts.)
c. Gamma decay (3 pts.)
Answers
Which condition would most likely lead to an increase in the frequency of an altruistic behavior in a population?.
Answers
Explanation:
The beneficiaries of the behavior are related to the individual performing it. Groups that differ in terms of altruistic and selfish genotypes have differential reproduction or survival.
Why is cloning so difficult? ASAP
Answers
Answer:
Scientists require two cells to clone an animal: an egg and a donor cell. The nucleus of the egg is removed and replaced with the nucleus of the donor cell. It can take 100 or more cloning attempts and just as many egg cells to finish the process for the animals we know how to clone.
Explanation:
A firm has $820 in inventory, $3,200 in fixed assets, $1,210 in accounts receivable, $890 in accounts payable, and $360 in cash. What is the amount of the net working capital?
a. $4,700
b. $5,590
c. $3,600
d. $2,390
e. $1,500
Answers
The net working capital for the firm is $1,500, calculated by subtracting current liabilities from current assets, the correct option is (e).
To calculate the net working capital, you need to subtract the current liabilities from the current assets.
In a company's financial statements, the formula for calculating current assets can be expressed as the sum of inventory, accounts receivable, and cash.
Current Assets = Inventory + Accounts Receivable + Cash
Current Liabilities = Accounts Payable
Using the given values:
Current Assets = $820 (Inventory) + $1,210 (Accounts Receivable) + $360 (Cash)
= $2,390
Current Liabilities = $890 (Accounts Payable)
The formula to calculate Net Working Capital is derived by subtracting Current Liabilities from Current Assets.
Net Working Capital = Current Assets - Current Liabilities
Net Working Capital = $2,390 - $890
= $1,500
Therefore, the amount of net working capital is $1,500.
Hence, the correct option is (e).
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Corn snakes show variety in their skin color pattern. While the complete genetics of corn
snake color are complex, the most common colors on normal corn snakes—red and
black— are each coded by one gene.
For the red gene, the allele for the presence of red pigment (R) is dominant and the allele
for the absence of red pigment (r) is recessive. Likewise, for the black gene, the allele for
the presence of black pigment (B) is dominant and the allele for the absence of black
pigment (b) is recessive.
a. Draw the Punnett square for the cross of a snake that is homozygous dominant for
the red color with a snake that is heterozygous for the red color. What percentage
of the offspring is expected to have red pigment in their skin?
b. Draw the Punnett square for the cross of two snakes that are heterozygous for the
black color. What percentage of the offspring are expected to have black pigment
in their skin?
c. The parent snakes in part (b) that are heterozygous for black color are both
homozygous recessive for the red gene. Each parent has genotype rr for the red
gene. Based on this information, what percentage of their offspring are expected
to lack both the red and black pigments in their skin? Explain your reasoning.
Answers
Answer:
a. Punnett square for the cross of a snake that is homozygous dominant for the red color (RR) with a snake that is heterozygous for the red color (Rr):
```
| R | R |
----------------
| RR | RR | RR |
----------------
| Rr | Rr | Rr |
```
In this cross, all the offspring (100%) will have the red pigment in their skin because the presence of red pigment (R) is dominant over its absence (r).
b. Punnett square for the cross of two snakes that are heterozygous for the black color (Bb):
```
| B | b |
----------------
| BB | BB | Bb |
----------------
| Bb | Bb | bb |
```
In this cross, 75% of the offspring are expected to have black pigment in their skin (BB and Bb genotypes), and 25% of the offspring are expected to lack black pigment (bb genotype) due to the absence of the dominant black allele (B).
c. Both parent snakes are homozygous recessive for the red gene (rr), meaning they lack the red pigment. Since the red gene and black gene are independent of each other, the absence of red pigment does not affect the inheritance of the black pigment. Therefore, the percentage of offspring expected to lack both red and black pigments in their skin would be the same as the percentage of offspring lacking the black pigment (bb genotype) in the Punnett square from part (b). Thus, 25% of their offspring are expected to lack both the red and black pigments in their skin.
True/False: The Night Sky moves around us.
True
False
Answers
Answer:
I think it’s false but it might be true. I’ll put information in the comments to help.
Explanation:
sorry if it’s wrong.
Write down the hormones secreted by Gonads with one function of each
Answers
Answer:
The gonads (the testes in males and ovaries in females) are responsible for the production of steroid hormones, such as testosterone, estrogen, and progesterone.
Explanation:
The hormones secreted by the Gonads are estrogen and progesterone in females, while testosterone, androstenedione, and inhibin in males.
What are Gonads?Gonads may be defined as the male and female reproductive organs. It includes testes in males and ovaries in females. These organs are essential for the reproduction process.
The function of each gonadal hormone is as follows:
Estrogen: It is responsible for the maturation and growth of the vagina and uterus.Progesterone: It is responsible for regulating the alterations in the uterus at the time of the menstrual cycle. Testosterone: It is responsible for the growth of bones, muscles, body hairs, etc. Inhibin: It is responsible for the regulation and development of sperm cells. Androstenedione: It is responsible for monitoring the level of estrogen and testosterone in the body of a human.Therefore, it is well described above.
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The evolution of the peppered moth over the last two hundred years has been studied in detail. Originally, the vast majority of peppered moths had light colouration, which effectively camouflaged them against the light-coloured trees and lichens upon which they rested. However, due to widespread pollution during the Industrial Revolution in England, many of the lichens died out, and the trees which peppered moths rested on became blackened by soot, causing most of the light- coloured moths to die off due to predation. At the same time, the dark-coloured moths flourished because of their ability to hide on the darkened trees. Since then, with improved environmental standards, light-colored peppered moths have again become common, but the dramatic change in the peppered moth's population has remained a subject of much interest and study Which type of selection is illustrated by the peppered moth's during the Industrial Revolution?
Answers
Answer:
Directional selection
Explanation:
The phenotype of individuals and the environment where they live, interact and determines the genes´ destiny in space and time. The result of this interaction and the gene destiny is Natural Selection. Natural selection selects beneficial alleles and increases their frequency in the population.
Among the different types of natural selection, we can find "directional selection".
Directional selection increases in the proportion of individuals with an extreme phenotypic trait, in this case, dark moths color. This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example, the moth population must be adapted to its environment. The coloration is related to survival strategies. In the beginning, they expressed light coloration useful to camouflage and to avoid predators while resting on their lighted-substrate (lichens and light-colored trees). After the severe environmental impact of the Industrial Revolution, the environment changed. This change acted as a selective pressure. Lichens died, and trees became darker. Light moths were exposed and died after predation. Probably at one point of the evolution, the gene for color mutated, and dark-colored moths appeared. By natural selection, the mutation got fixed. This example reflects directional selection because the population turned from light color to dark color.
In the attached files you will find two graphs expressing directional selection.
Question:
Do you believe that organic food is worth the additional cost? What are the benefits of organic
food versus the more convenient option of GMO products?
I'll give brainless for a suitable answer please
Answers
Answer:
yes, because:
No use of toxic and persistent pesticides and fertilizers
No use of genetically engineered—or modified—organisms
Healthier soil through organic farming practices such as crop rotation, pasture grazing and mulch
Organic meats don’t contain any growth hormones
Animals raised organically aren’t given any antibiotics
Organic soil better conserves water, fosters biodiversity, combats erosion and mitigates climate change for significant environmental gains
gi is a g protein that inhibits adenylate cyclase in response to ligand activation. a toxic bacterial enzyme enters cells and covalently alters the a subunit of gi so that it cannot release bound gdp in response to receptor activation by ligand. which of the following will happen in the cell (consult the g protein cycle slide in your powerpoint for help)(select one)? group of answer choices a) the g protein remains bound to the ligand-activated receptor. b) the receptor cannot communicate with the adenylate cyclase enzyme c) cellular levels of camp are elevated. d) all the above e) a and b
Answers
The correct option is: e) a and b. a) the g protein remains bound to the ligand-activated receptor. b) the receptor cannot communicate with the adenylate cyclase enzyme
In the G protein cycle, the G protein is activated when the ligand (receptor activator) binds to the receptor.
Upon activation, the G protein exchanges its bound GDP (guanosine diphosphate) for GTP (guanosine triphosphate), leading to the dissociation of the G protein into its subunits (Gα and Gβγ).
The Gα subunit, now bound to GTP, can then interact with downstream effectors, such as adenylate cyclase.
In this scenario, the toxic bacterial enzyme covalently alters the α subunit of Gi (an inhibitory G protein), preventing it from releasing bound GDP. As a result, the G protein cycle is disrupted. Here's what happens:
The G protein remains bound to the ligand-activated receptor:
Since the α subunit of Gi cannot release bound GDP, it remains associated with the receptor, even after ligand activation.
This disrupts the normal cycle where the G protein dissociates from the receptor after activation.
The receptor cannot communicate with the adenylate cyclase enzyme:
In the normal G protein cycle, the activated Gα subunit, bound to GTP, interacts with adenylate cyclase to inhibit its activity.
However, in this case, as the α subunit of Gi is unable to release bound GDP, it cannot interact with adenylate cyclase to inhibit its function.
Therefore, the receptor cannot effectively communicate with the adenylate cyclase enzyme.
Cellular levels of cAMP are elevated:
Adenylate cyclase is responsible for producing cyclic adenosine monophosphate (cAMP) from ATP.
In the absence of inhibition by the Gα subunit, the activity of adenylate cyclase is not regulated properly, leading to increased production of cAMP.
Therefore, cellular levels of cAMP are elevated.
In conclusion, when the α subunit of Gi is covalently altered and unable to release bound GDP, both the G protein remaining bound to the ligand-activated receptor and the impaired communication between the receptor and adenylate cyclase enzyme occur. This disruption ultimately leads to elevated cellular levels of cAMP.
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All but one of the following is an endogenous factor: Application rate of herbicide. Acre feet of irrigation water applied. Price of herbicide per gallon. Decision as to which herbicide would be best given farm's IPM strategy
Answers
The factor that is an endogenous factor is: d. Decision as to which herbicide would be best given the farm's IPM (Integrated Pest Management) strategy.
What is an Endogenous Factor?An endogenous factor refers to a factor that originates from within the system or process being studied. In the given options, the endogenous factor is d. Decision as to which herbicide would be best given the farm's IPM (Integrated Pest Management) strategy.
This factor is influenced by internal considerations and decisions made within the system itself. On the other hand, options a, b, and c are exogenous factors because they are external to the system and can affect the system but are not directly determined by it.
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what is the phenomenon called in which a trait of the offspring is solely determined by the value of the trait in the female parent because it is passed on via the organelles in the egg cell?
Answers
The phenomenon is called the maternal inheritance.
What is maternal inheritance?Maternal inheritance is a phenomenon in which certain traits of the offspring are solely determined by the value of the trait in the female parent because they are passed on via the organelles in the egg cell. This occurs because these organelles, such as mitochondria or chloroplasts, contain their own DNA that is separate from the nuclear DNA and is only inherited from the maternal parent. Therefore, the traits that are determined by the genes present in these organelles are solely determined by the value of the trait in the female parent. Examples of traits that can be inherited maternally include some types of diseases that are caused by mutations in mitochondrial DNA.
What is DNA?DNA, or deoxyribonucleic acid, is a molecule that carries genetic information in all living organisms. It is a long, double-stranded helix composed of nucleotides, which are made up of a sugar molecule, a phosphate group, and a nitrogenous base. The four types of nitrogenous bases in DNA are adenine, thymine, guanine, and cytosine. The specific sequence of these bases along the length of the DNA molecule is what determines the genetic code, which contains instructions for the development, function, and reproduction of living organisms. DNA is found in the nucleus of eukaryotic cells, as well as in some organelles such as mitochondria, and it is responsible for the inheritance of genetic traits from one generation to the next.
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What is the access code for microbiology an introduction?
Answers
The access code for Microbiology is typically included with the purchase of a new textbook.
An Introduction varies depending on the edition of the textbook being used. Therefore, it is essential to know which edition of the book you are using in order to obtain the correct access code. Microbiology is the study of microscopic organisms, including bacteria, fungi, viruses, protozoa, and algae, as well as the interactions that occur between these organisms and their environment. Access CodeIn order to access online resources for Microbiology: An Introduction, students will require an access code.
The access code allows students to access a variety of supplementary materials, including quizzes, animations, and other online resources. The access code for Microbiology: An Introduction is different for each edition of the textbook. The access code is typically included with the purchase of a new textbook. The access code can also be purchased separately, usually online from the publisher's website.
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Which of these is the best solution for an electronic product to be environmentally friendly? (1 point)
1. Choose metals that come from mines that use renewable energy.
2. Choose metals that come from only American mines.
3. Choose materials other than metals.
4. Choose recycled metals
Answers
Among the given options, choosing recycled metals is the most effective solution for making an electronic product environmentally friendly.
Recycling metals reduces the need for extracting new resources, conserves energy, and minimizes the environmental impact associated with mining and processing raw materials. By opting for recycled metals, manufacturers can significantly reduce carbon emissions and the depletion of natural resources.
Additionally, using recycled metals promotes a circular economy by extending the lifespan of materials and reducing waste. It is important to note that while choosing metals from mines that use renewable energy or selecting materials other than metals can be beneficial, they may not be as sustainable and impactful as utilizing recycled metals. By prioritizing the use of recycled materials in electronic product manufacturing, we can contribute to a more sustainable and eco-friendly approach.
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When the team captured underwater footage of a juvenile pygmy blue whale, what else did the crewnotice in the water and why were they so surprised by this discovery?
Answers
Answer:
See below
Explanation:
The crew of scientists noticed a nursing area, one which has never been seen or reported before - this made it all the more surprising. A mother whale nursing its young calf was captured, rather several pairs of this beautiful relationship was found. Generally, the blue whales are known to travel alone so a group of them together was a pleasant surprise.
Which property refers to how a mineral reflects light? density hardness luster streak
Answers
Answer:
Luster is how a mineral reflects light.
Explanation:
Answer:
Luster is correct
Explanation:
Got it right on Edge
Damage to Schwann cells would result in Group of answer choices loss of the structural framework of the brain decreased speed of conduction ability to produce scar tissue at the site of an injury increased axoplasmic flow
Answers
Answer: decreased speed of conduction.
Explanation:
Schwann cells are type of cells of the peripheral nervous system that produce myelin sheath around neurosonal axons thereby increasing the saltatory function of neurons.
If Schwann cells are damaged it result in blockage of electric conduction which will produce secondary demeylination and resulting in shock or toxic immune shock.
Schwann cells produce myelin sheath will help to increase saltatory conduction but when it is damaged it will decrease conduction and result in shock.
Classify the terms as most closely related to either an ecosystem or a community.
Answers
An ecosystem and a community are closely related terms. An ecosystem is a collection of living and non-living components that interact with each other.
It includes things like plants, animals, sunlight, soil, water, and climate. A community is a group of living organisms that interact with each other, and their environment. Communities can be made up of different species, such as plants, animals, and fungi.
A key difference between an ecosystem and a community is that an ecosystem is a self-sustaining system, while a community is a group of organisms that live together and interact with each other.
In an ecosystem, the living and non-living components interact with each other in a balanced way. A community, on the other hand, is a group of living organisms that interact with each other and their environment.
In summary, an ecosystem is a self-sustaining system that includes living and non-living components, while a community is a group of living organisms that interact with each other and their environment. Both ecosystems and communities are vital components of the environment, and they play an important role in maintaining a healthy planet.
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Please help!
Provide one similarity AND one difference photosynthesis has with aerobic respiration.
Answers
Some differences between photosynthesis and respiration are that photosynthesis only happens in sunlight while respiration happens constantly and that photosynthesis releases oxygen while respiration uses it. Some similarities between the two are that both produce energy and involve the exchange of gases.
How did the drought affect the size of the bird beaks?
O beak depth decreased
O beak depth increased
O beak depth stayed mostly the same
Answers
The autonomic nervous system controls _____________.
A. our brain
B. involuntary activities
C. voluntary activities
D. our spinal cord
Answers
Answer:
B. involuntary activities
Which of the following is a substance that is able to puncture holes into plasma membranes of foreign cells?
*perforin
Answers
Answer:
C) Perforin
Explanation:
I've taken the test.
A student is working on a lab exercise learning the techniques used in extracting DNA from blood. What forensic science discipline is the student practicing?
Answers
Forensic pathology is the discipline of forensic science which is used by the student who is working in the laboratory exercise learning the techniques used in DNA extraction.
What is DNA extraction?DNA extraction is the procedure of removal of the genetic material (DNA) from the cell or the evidence which are found at the crime scene to find the criminal.
Forensic Biology is the branch of science which involves the application of concepts and procedures in the biological sciences, typically in a medico-legal context. Forensic biologists analyze the samples, as well as the physiological fluids that are relevant to a legal investigation present on the crime scene. Forensic molecular biology (DNA) is the branch of forensic pathology which is used in the extraction and analysis of DNA found at the site of crime.
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What type of transport was shown in the second animation?
A. active transport with the help of transport proteins
B. passive transport by simple diffusion across the membrane
C. passive transport by facilitated diffusion with the help of transport proteins
Answers
Answer:
C. passive transport by facilitated diffusion with the help of transport proteins
Explanation:
The electron transport chain (shown in the second animation) establishes a proton gradient across the inner mitochondrial membrane. ATP synthase uses the energy stored in the proton gradient to catalyze the synthesis of ATP. The molecular machinery involved in this process converts chemical energy to mechanical energy and provides a great example of the relationship between the structure and function of macromolecules.
Answer:
C. passive by facilitated diffusion with the help of transport proteins
Explanation:
Passive transport is a type of membrane transport that does not require energy to move substances across cell membranes.
hais result from the interaction of three factors. what are these factors
Answers
Healthcare-associated infections (HAIS) result from the interaction of three factors. These factors include:
The presence of microorganismscompromise status of the hostEnvironment (chain of transmission)What are the factors influencing healthcare-associated infections?The presence of pathogens: HAIS can occur when there are pathogens present in the healthcare setting. These pathogens can be bacteria, viruses, or fungi that can cause infections.The susceptibility of the patient: Patients who have weakened immune systems, such as those who are elderly, have chronic illnesses, or are undergoing medical treatments, are more susceptible to HAIS.The transmission of pathogens: HAIS can be transmitted through various means, including contact with contaminated surfaces or medical equipment, contact with healthcare workers, or through the air.
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why do you produce carbon dioxide when working out?
Answers
Answer: The lungs bring oxygen into the body, to provide energy, and remove carbon dioxide, the waste product created when you produce energy. The heart pumps the oxygen to the muscles that are doing the exercise. When you exercise and your muscles work harder, your body uses more oxygen and produces more carbon dioxide.
what causes a decrease in oxygen levels beyond the sunlit layer?
Answers
Excess nutrients in the upper layers of the ocean can cause a decrease in oxygen levels beyond the sunlit layer.
This phenomenon is referred to as “dead zones” and is most commonly caused by excess nutrients in the water brought in from agricultural runoff and other sources of pollution. This increase in nutrients stimulates excessive algal growth, which depletes oxygen from the water when the algae dies and decomposes.
Other sources of oxygen depletion in the deep ocean are connected to volcanic activity and upwelling ocean currents that can also bring in nutrients and cool the deep water, further diminishing the amount of oxygen that can remain in the deep ocean.
These dead zones can be a detriment to the species living in the deep ocean and have serious consequences on the marine ecosystems as a whole. It is important to understand and address the causes of these dead zones in order to better preserve oceanic ecosystems.
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find the mass of a 50ml quantity of water if the density of the water is 100g/ml.
Answers
Answer: 5000 g
Explanation: As the equation for density is D = M/V we can plug in our available units:
Density (D) = 100
Volume (V) = 50
ml is milliliters which means that that is our volume.
If you plug in these numbers you are left with the equation:
100= M/50
Solving this for M:
x50 100 = M/50 x50
5000 = m
This leads us to 5000 grams (from our density amount which is g/ml).
Several different amino acids join together to form a protein. How do any two types of amino acids differ from one another?
a. the number of amino groups in the molecule b. the number of carboxyl groups in the molecule C. the chemical structure of the R group in the molecule d. the number of chemical bonds formed by the central carbon atom