Answer:
b) a graphical representation of the relationship between hemoglobin's percent saturation and the partial pressure of oxygen
Explanation:
On vertical axis-hemoglobin's oxygen saturation
On horizontal axis-oxygen partial pressure
This curve determines hemoglobin affinity for oxygen. If hemoglobin has high oxygen saturation, hemoglobin's affinity for oxygen is high.
As the blood moves through the systemic capillary, hemoglobin's affinity for oxygen decreases, so that oxygen can be released into the cells.
On the Bahamian island of Andros, mosquitofish populations live in various, now-isolated, freshwater ponds that were once united. Currently, some predator-rich ponds have mosquitofish that can swim in short, fast bursts; other predator-poor ponds have mosquitofish that can swim continuously for a long time. When placed together in the same body of water, the two kinds of female mosquitofish exhibit exclusive breeding preferences. Which two of the following have operated to increase divergence between mosquitofish populations on Andros? improved gene flow bottleneck effect sexual selection founder effect natural selection
The increased divergence between mosquitofish populations on Andros is due to the bottleneck effect and natural selection.
Explanation:The two factors that have operated to increase divergence between mosquitofish populations on Andros are the bottleneck effect and natural selection. The bottleneck effect occurs when a population is drastically reduced, resulting in a loss of genetic variation. In this case, the isolation of the ponds from each other created smaller populations that were exposed to different selective pressures, leading to divergence. Natural selection then acts on these smaller populations, favoring traits that are advantageous in their specific pond environment.
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Would the pi values of the animal insulins be the same as, greater than, or less than human insulin?
The pI values for animals and human insulin are the same, with the exception of duck and chicken insulin.
What is a pI value?The pI value is the isoelectric point of the protein or amino acid chain. The isoelectric point can be given as the pH value at which the net charge of the insulin molecule is zero.
The insulin molecule is composed of amino acids that are charged at a specific pH. With the change in the pH, charge transfer takes place and results in the net-zero pH at pI.
The changeable amino acids in animal insulin and human insulin are the same. Thus, the pI values for human and animal insulin are the same.
The exceptions to the condition are duck and chicken insulin.
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Final answer:
Animal insulins such as bovine and porcine may have different isoelectric points (pI) compared to human insulin due to variations in amino acid sequences. Recombinant DNA technology enables the production of insulin identical to human insulin, which circumvents the immune response issues caused by animal-sourced insulin.
Explanation:
The isoelectric point (pI) of animal insulins such as those derived from pigs (bovine) and cows (porcine) may differ from that of human insulin due to their amino acid composition differences. Pig insulin differs from human insulin by one amino acid and beef insulin by three. These sequence differences can affect the pI of the insulin molecules because pI is determined by the overall charge of the protein, which in turn is influenced by the presence and position of charged amino acids within the sequence.
Insulin's functionality is also related to its similarity to human insulin. Although animal insulins were effective in treating diabetes, they were recognized by the immune system as foreign, which could lead to an antibody response and require higher doses of insulin for treatment. Furthermore, the animal-derived insulin had the potential to induce other immunological complications.
With the advent of recombinant DNA technology, it has become possible to produce insulin that is identical to human insulin in bacteria like E. coli. This insulin has the same sequence and therefore the same pI as naturally occurring human insulin, eliminating the immune response seen with animal-sourced insulins and allowing for a more consistent and safe treatment for diabetes.
Which best explains the importance of nitrogen in the cycling of energy and
matter?
A Nitrogen increases protein production in plants.
B Nitrogen decreases protein production in plants.
C Nitrogen decreases the effectiveness of photosynthesis.
D Nitrogen increases the effectiveness of photosynthesis.
Answer:
The correct option is A.
Explanation:
Nitrogen is a gas that is present in high quantity in the atmosphere. This gas contribute significantly to the growth and development of plants and that of animals. Nitrogen in the atmosphere usually get incorporated into the soil via lightening and it is typically fixed by nitrogen fixing bacteria. This nitrogen is then used as part of the nutrients that plants need to grow and develop and it is also used in the production of protein in plant parts. Animals use these plants as source of proteins in their diets. Ultimately the waste products derived from protein is return to the soil where they are broken down by decomposers to nitrogen forms that plants can use. Thus, nitrogen increases the production of proteins in plants.
Option A) Nitrogen increases protein production in plants, vital for growth and development, making it crucial in the cycling of energy.
The best explanation for the importance of nitrogen in the cycling of energy and matter is that nitrogen increases protein production in plants (Option A). Nitrogen is a critical macronutrient, essential for the synthesis of proteins, nucleic acids, and chlorophyll. Plants require these compounds for growth and development, and insufficient nitrogen can lead to stunted growth and chlorosis (yellowing of leaves). Atmospheric nitrogen (N₂) is abundant but not directly usable by plants; they rely on nitrogen fixation processes to convert it into biologically available forms like ammonia (NH3). Nitrogen is thus crucial for the primary productivity of plants and the overall health of ecosystems.
Which statement about reproduction is true? A. Angiosperms reproduce using seeds, but gymnosperms do not. B. Gymnosperms reproduce using seeds, but angiosperms do not. C. Both angiosperms and gymnosperms reproduce using seeds. D. Neither angiosperms nor gymnosperms reproduce using seeds.
Answer:
c
Explanation:
A is correct because Gynosperms using female and male cones and Angiosperms use seeds.....Brainliest?
Consider the genetic cross for absent-mindedness, which is a dominant trait. What is the probability that the offspring of this cross will be absent-minded?
Answer:
The correct answer is D.} 100%
Explanation:
Answer:
100%
Explanation:
Which best contrasts flocking and schooling?
A)Flocking provides aerodynamic efficiency and schooling provides hydrodynamic efficiency.
B)Flocking provides protection and schooling provides hydrodynamic efficiency.
C)Flocking provides aerodynamic efficiency and schooling provides foraging benefits.
D)Flocking provides reproductive benefits and schooling provides foraging benefits.
Hello There!
A)Flocking provides aerodynamic efficiency and schooling provides hydrodynamic efficiency.
Answer:
A)
Explanation:
Flocking provides aerodynamic efficiency and schooling provides hydrodynamic efficiency. ... The birds are aerodynamically efficient so they can use the air around them to reduce the energy used to fly.
The _____ species concept is the most applicable to classifying species from the fossil record.
Answer:
Morphological (Morphology)
Explanation:
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features.
Humans have more than 100 vestigial structures in their bodies. Comparative morpho. is an important tool that helps determine evolutionary relationships between organisms and whether or not they share common ancestors.
However, it is also important evidence for evolution.
I will mark brainliest! Complete the possible outcomes for each generation in the pedigree chart.
Fillers:
aa AA Aa
Answer:
The correct sequence of fillers left to right are AA. Aa, and aa.
Explanation:
In the given pedigree chart, parents are heterozygous Aa and homozygous AA produce gametes A and a, and A and A respectively. All gametes will assort and possible outcomes will be AA, AA, Aa, and Aa in first generation.
Cross between Aa and Aa will produce gametes A, A, and A, a. All these gametes assorted and produce offspring and outcomes are AA, aa, Aa, and Aa in second generation.
Thus, The correct sequence of fillers left to right are AA. Aa, and aa.
Answer:
The correct sequence of fillers left to right are AA. Aa, and aa.
Explanation:
What are two ways carbon returns from animals into the water?
Answer:
fecal matter and liquids
Explanation:
Where is the spinal cord found? below the frontal lobe in the occipital lobe in the backbone below the thalamus?
The spinal cord is in the backbone (aka spine). The spinal cord is part of the central nervous system
How I remember where the spinal cord is the root of the words spine and spinal cord is similar
Hope this helped!
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Proteins are digested in which areas of the body?
The stomach is where protein is digested.
In the experimental process, the scientists made all measurements for material A before beginning to take measurements for material B. Was this a valid approach?
A.) No; in order to compare materials, they must be analyzed at the same time.
B.) Yes; materials can be tested in any order as long as all measurements are recorded carefully.
C.) Yes; testing material B before testing material A, however, would have invalidated the results.
D.) No; the results of the first test could have influenced the results of the second test.
Yes; testing material B before testing material A, however, would have invalidated the results.
hope this helps :)
Land-based plants must have mechanisms to disperse and scatter their seeds so that new plants don't grow in the shadow of old plants. Which of the following do gymnosperms, such as pine trees, rely on to disperse fertilized seed cones? A. Wind B. Animals that eat the seeds C. Animals, seed wings, and wind D. Seed wing structures
Answer:
Its c ,animals ,seed wings and wind
Explanation:
There are mainly 2 ways the seeds of gymnosperms are dispersed :-
The gymnosperms that are old become rip and their cones open up and the seeds are dispersed by the wind.There are small seed wings present on seeds that take the seed to long distance places The fruit of the gymnosperms gets eaten by the animals in different places as its their source of food .The seeds are not digested by the animals and excreted as a result the seed is dispersed far away from the sourceDan is on his high school swim team. Which muscle is the primary mover that allows him to perform a swimming stroke?
A.
Pectoralis major
B.
Infraspinatus
C.
Latissimus dorsi
D.
Supraspinatus
Answer:
it will be A
Explanation:
Answer:
A Pectoralis major
How many amur leopards are left in the world 2019
Answer:
About 70
Explanation:
Amur leopard is a rare subspecies located at Russian Far East. They are solitary, nocturnal animals that are highly territorial. The number of individuals in the is very low, because Amur leopards are on the brink of extinction. This is because their main threat are humans-hunters who kill them for the fur, but also development of the cities and farm on leopards' habitat. Since their population is small, interbreeding is a huge problem.
As of 2019, there were about 100 Amur leopards left in the world. These critically endangered big cats are primarily found in the Russian Far East and Northeast China, and their survival depends heavily on ongoing conservation efforts.
Explanation:As of 2019, there were approximately 100 Amur leopards left in the world. The Amur leopard is a critically endangered species, and concerted conservation efforts are vital for their survival. The population estimates for these elusive big cats are based on camera trap studies and other types of research that monitor their presence in the wild.
The Amur leopard, also known as the Far Eastern leopard, inhabits the Russian Far East and Northeast China, and its small population size has placed it at extreme risk of extinction due to poaching, habitat loss, and inbreeding. Conservation programs, including anti-poaching measures and habitat preservation, are crucial to increase their numbers and ensure their future.
The sporophyte generation is:a. diploidb. haploidc. polyploid
Answer:
a. diploid
Explanation:
After the fertilization process between haploid egg cell and haploid sperm cell, diploid zygote is formed. Zygote has two sets of chromosomes (one from each gamete) which means it is diploid. Sporophyte stage of life cycle will develop from diploid zygote. During the life cycle of a plant (or algae) sporophyte phase alternates with a gametophyte phase which is haploid. In both, seed plants and flowering plants sporophyte phase (roots, stem, leves, cones/flowers) is more prominent than gametophyte phase (pollen, embryo sac).
Sporophyte phase produces spores via meiosis that develop into gametophte.
Which of the following is a technique developed to safeguard against even unintentional bias in recording data?
Physical Science
Answer: Fail to Plan, Plan to Fail
Explanation:
Homologous chromosomes are pairs of chromosomes containing genes that code for __________.a. DNAb. sexc. the same traitsd. different traits
Answer:
d. different traits
Explanation:
Human cell are diploid (with the exception of gametes) which means that they have two sets of chromosomes: one inherited from mother and another inherited from father (23 chromosomes in each set, total of 46 chromosomes per cell). Those chromosomes in pair are called homologous chromosomes, they are the same in size and shape, contain the same genes but code for different traits.
What are two possible ways that making plastics for electronic devices could impact the environment
Answer:
RoHS applies to the following substances for electronic equipment and electrical appliances: lead, mercury, cadmium, hexavalent chromium, PBB (polybrominated biphenyls), and some PBDEs (polybrominated diphenyl ethers).
Answer:
Plastic has a significant environmental effect since it takes a long time for it to degrade. Furthermore, as plastic components decompose in the sun, harmful chemicals are released into the soil, and when plastic parts are burned, hazardous substances are discharged into the air, producing ambient air pollution.
Based on the information in the table, eating which type of oil would most
likely cause buildup in blood vessels?
Well... a "build up in blood vessels" is actually called a CLOT. That should help you. :)
Answer: The answer is Coconut oil For Apex.
Explanation:
it has the most saturated fat. (85)
The most efficient control of eukaryotic gene expression is achieved at the level ofA) replication.B) transcription initiation.C) post-transcription.D) translation initiation.E) post-translation.
B) transcription initiation
The location of the first nucleotide read by rna polymerase is the
Answer:
Promoter site (region)
Explanation:
RNA polymerase is known to be an enzyme that is involved in the synthesis of RNA from DNA by polymerizing the RNA from the 5’ to 3’ end. The process of RNA transcription from DNA begins at the promoter site (region) which is a designated base sequence that marks the beginning of transcription process on the long DNA strand.
What percentage of water on earth is freshwater?
2.5%
It is a very small percentage.
The classification levels of a human are listed below from largest to smallest. Eukarya Animalia Chordata Mammalia Primates Hominidae Homo sapiens Which level of biological classification do Mammalia and Hominidae represent, respectively? class and family order and class family and species species and kingdom
Answer:
The answer is class and family.
Explanation:
Taxonomic groups are used for biological classification. There are eight main taxonomic groups: domain, kingdom, phylum, class, order, family, genus and species, with the domain as the most inclusive and species as the least inclusive. If we take a look on Mammalia and Hominidae classification, we can assume that Mammalia represents class, and Hominidae represents family:
1. Domain: Eukarya
2. Kingdom: Animalia
3. Phylum: Chordata
4. Class: Mammalia
5. Order: Primates
6. Family: Hominidae
7. Genus: Homo
8. Species: Homo sapiens
Answer:
the answer is class and family
Explanation:
When we look at islands across the planet (think the islands of the Galápagos and Hawaii) we see that there are a remarkable number of island endemic species, species that are found nowhere else. What is a possible explanation for this observation?Sympatric speciation on islands is easier than in mainland environments because rates of chromosomal evolution are higher on islands.Extinction rates are lower in islands so species that have gone extinct elsewhere persist on islands.Sympatric speciation on islands is easier than in mainland environments because levels of disruptive selection are higher on islands.Vicariance events are more common on islands than in mainland environments.Island isolation promotes allopatric speciation.Island isolation promotes allopatric speciation.
Answer:
Island isolation promotes allopatric speciation.
Explanation:
Allopatric speciation is a form of speciation (creation of new species) that occurs as a result of geographic isolation. This means that a part of population becomes physically separated from the initial main population. There is no gene flow between these two populations and as a result the two populations reach a high level of genetic divergence. They can no longer interbreed which means they become two different species (speciation).
New populations evolve as result of mutation, genetic drift and natural selection.
For example, Galapagos finches are isolated from others by the ocean (geographic isolation). Because of the isolation, the finches don’t breed with one another. So, they developed unique characteristics and became endemic.
1.) When the Greenhouse Effect is exaggerated through human activities more and more heat will be trapped on the Earth, increasing the average temperature. What is this called?
A.) Global cooling
B.) Global Warming
C.) Photosynthesis
D.) CO2 Emissions
2.) What is the largest source of U.S. greenhouse gas emissions?
A.) Agriculture
B.) Transportation
C.) Electricity production
D.) Home heating
3.) What is an example of the greenhouse effect?
A.) Steam rising from boiling water
B.) Baking brownies on a metal pan.
C.) Stepping on hot pavement and it burning your feet.
D.) Inside of a car becoming hot on a warm day.
4.) What are the two most major gases produced by people?
A.) Methane and Fluorine
B.) Carbon Dioxide and Methane
C.) Carbon Dioxide and Nitrous Oxide
D.) Methane and Nitrous Oxide
1 - B
2 - Also B
3 - D
4 - B again
Anything else i can help with Dean?
1. Global warming
2. Transportation
3. Inside of a car becoming hot on a warm day.
4.Carbon Dioxide and Methane
What is greenhouse effect?The greenhouse effect is a natural mechanism that causes the surface of the Earth to warm. Some of the Sun's energy is reflected back to space, while the rest is absorbed and re-radiated by greenhouse gases as it enters the Earth's atmosphere.Emissions of carbon dioxide. The principal greenhouse gas emitted by human activity is carbon dioxide (CO2). Carbon dioxide is released into the atmosphere as a result of the combustion of fossil fuels (coal, natural gas, and oil), solid waste, trees, and other biological materials, as well as chemical processes.Coal, natural gas, and oil production and transportation all generate methane. Livestock and other agricultural techniques, land use, and the breakdown of organic material in municipal solid waste landfills all contribute to methane emissions.learn more about greenhouse effect here:
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What is the floor of an aquatic biome called? benthic zone photic zone marine zone aphotic zone
Answer: The floor of an aquatic biome is called the benthic zone.
Explanation:
Benthic zone is called as the floor of an aquatic biome. So, the correct option is A.
What is Benthic zone?The benthic zone is defined as the lowest ecological zone in a water body, usually consisting of sediments on the ocean floor, where these sediments play an important role in providing nutrients for the organisms that live in the benthic zone.
Benthic zone is called as the bottom zone of a water body, fresh or marine where the light penetration is nil. Benthic animals include the polychaetas which live in or on the bottom while the animals that live in or on the bottom of the Bay are called the benthic community.
Despite being hidden, the benthic zone is a crucial component of lake ecosystems. Many aquatic species can breed, forage, and find shelter in this area alone. The shallow coastal waters' benthic zones offer optimum environment for animal and amphibian breeding.
So, the correct option is A.
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1.) The difference in the brightness of two stars with the same surface temperature is attributable to their _____.
colors
densities
ages
sizes
2.) Most responsible for the formation of a star is _____ force.
electromagnetic
gravitational
interstellar
nuclear
3.)Which main-sequence stars are the most massive?
yellow
orange
red
blue
4.) A spinning neutron star that appears to give off radio wave pulses is called a _____.
supernova
white dwarf
pulsar
black hole
5.) Greater redshifts in the spectra of galaxies indicate _____.
faster speeds
lower temperatures
slower speeds
higher temperatures
Answers: 1 .The difference in the brightness of two stars with the same surface temperature is attributable to their sizes.( last choice)
2.Most responsible for the formation of a star is gravitational force.(second choice )
3. Blue ( last choice)
4.
A spinning neutron star that appears to give off radio wave pulses is called a pulsar ( third choice)
5.Greater redshifts in the spectra of galaxies indicate faster speeds ( first choice)
Final answer:
Stars are classified by color, size, and mass. The brightness difference in stars of the same temperature is linked to their sizes. Blue stars are more massive, and redshifts in galaxy spectra indicate higher speeds.
Explanation:
The difference in the brightness of two stars with the same surface temperature is attributable to their sizes. The most responsible for the formation of a star is the gravitational force. Blue stars tend to be more massive than 2 Msun, stars about the size of the Sun are yellow, and stars much smaller are red. A spinning neutron star that appears to give off radio wave pulses is called a pulsar. Greater redshifts in the spectra of galaxies indicate faster speeds.
List the structures that make up the pathway of air through the respiratory system starting with the external nares.
Answer:
Nose: Air is inhaled through the nostrils (and sometimes through the mouth) where it is filtered by the hairs and cilia to remove dust particles and moistened. The nasal cavity also moderates the temperature of the inhaled air.
Pharynx: This is a common passage for food, water, and air. It leads from both the nose and the mouth and leads to both the trachea (windpipe) and the oesophagus (foodpipe).
Larynx: This is the voice box situated just over the trachea and has a flap called the epiglottis which closes during swallowing to prevent food from entering the trachea and opens during breathing.
Trachea: Air now enters the windpipe which is situated behind the sternum (breastbone) and between the two lungs.
Bronchus: From the trachea, two bronchi (one bronchus for each lung) enter the lungs and divide and subdivide into secondary and tertiary bronchi, getting narrower as they proceed into the lung.
Bronchioles: The tertiary bronchi branch into fine tubules called bronchioles, the last passageways for air.
Alveoli:. Air ends its pathway in the alveoli (sing. alveolus) which are tiny sacs with very fine singe-celled walls. These alveoli are surrounded by capillaries that connect the pulmonary arteries and veins and that enable transfer of oxygen and carbon dioxide.
The pathway of air through the respiratory system starting with the external nares includes the nose, mouth, larynx, pharynx, lungs, and diaphragm.
Explanation:The pathway of air through the respiratory system starting with the external nares includes the following structures:
Nose: The major entrance and exit for the respiratory system.Mouth: A secondary opening for the respiratory tract.Larynx: Also known as the voice box, it connects the pharynx to the trachea.Pharynx: It is composed of three major sections: the nasopharynx, oropharynx, and laryngopharynx. It connects the nasal cavity and oral cavity to the trachea and esophagus.Lungs: The main organs of the respiratory system where gas exchange takes place.Diaphragm: A dome-shaped muscle that separates the chest and abdominal cavities and plays a role in breathing.Which stage of cellular respiration produces the most atp?
Answer:
Electron transport Chain (Oxidative phosphorylation)
Explanation:
Cellular respiration can be defined as the process that involves the breakdown of glucose molecules into CO2 and H2O to generate energy inform of Adenosine Triphosphate (ATP). Also, cellular respiration usually takes place in the cells of an organism by converting biochemical energy present nutrients into Adenosine Triphosphate. Furthermore, it takes place in three stages which includes: glycolysis, TCA cycle and Electron transport (Oxidative phosphorylation). Thus, oxidative phosphorylation is the final stage of aerobic cellular respiration that produces maximum ATPs.
The oxidative phosphorylation stage of cellular respiration produces the most ATP. This stage utilizes an electron transport system to create an electrochemical gradient, which facilitates the production of ATP. Although other stages also produce ATP, about 90% is made during oxidative phosphorylation.
Explanation:The stage of cellular respiration that produces the most ATP is the Oxidative Phosphorylation stage. During this stage, NADH and FADH2, made in glycolysis, the transition reaction, and the Krebs cycle, transfer their electrons to an electron transport system (ETS). This series of reactions is facilitated by protein complexes located in the inner membrane of a cell's mitochondria. The energy from the transferred electrons then creates an electrochemical gradient across the membrane, leading to the production of ATP through chemiosmosis, also known as oxidative phosphorylation.
It's important to note that while other phases such as glycolysis and the Krebs cycle also produce ATP, the bulk, about 90%, is generated during oxidative phosphorylation. This makes oxidative phosphorylation the most ATP-rich stage of cellular respiration.
For every oxidized NADH in the electron transport chain (ETC), approximately three ATP are produced, and around two ATP are produced for each oxidized FADH2. Consequently, one glucose molecule that enters the aerobic respiration process can net roughly 36 ATP in total.
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