Answer:
A
Explanation:
Pretty sure its A
letter a
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Respiratory structures in order of airflow from outside to inside the body
Final answer:
Air journey from the external environment to the alveolar sacs involves several structures, starting with the nasal cavity and moving through the pharynx, larynx, trachea, primary bronchi, secondary and tertiary bronchi, bronchioles, and onto the alveolar ducts and sacs where gas exchange occurs.
Explanation:
The journey of air from the outside to the inside of the body involves passing through several structures that are part of the respiratory system. Understanding this pathway can provide insights into how our bodies process air for the essential exchange of oxygen and carbon dioxide, which is vital for cellular respiration and energy production.
Nasal cavity: The first point of entry where air is warmed, humidified, and filtered.Pharynx: This serves as a path for air from the nasal cavity to the larynx.Larynx: Often referred to as the voice box, it directs air into the trachea and prevents food from entering the airway.Trachea: This tube, also known as the windpipe, further conducts air to the bronchi.Primary bronchi: The trachea splits into the left and right bronchi, each leading to a lung.Secondary and tertiary bronchi: These are further divisions within the lungs, branching into smaller passages.Bronchioles: Smaller tubes that distribute air to different regions of the lungs.Terminal and respiratory bronchioles: Final branches that lead air into the gas exchange sites.Alveolar ducts then alveolar sacs: Structures where gas exchange with capillaries occurs, allowing oxygen to enter the blood and carbon dioxide to be expelled.Each of these structures plays a critical role in ensuring air is properly processed for gas exchange, demonstrating the complexity and efficiency of the human respiratory system.
why people are worried about cholera during natural disasters.
Specifically, in the case of cholera, the breakdown of water/sanitation systems and significant decrease in hygeine standards can cause diarrheal diseases.
Crowding in shelters/camps, increasing contact between people
Mixing of different regional populations with different levels of vaccination or endemic disease
Contamination of drinking water
Spread of infectious mud or soils (leptospirosis)
Disruption or delay of vaccination programs
Death or disappearance of key medical and administrative staff
Destruction of key facilities (laboratories, hospitals, clinics, etc.)
In a particular species of frogs, black spots are dominant trait in their absence is a recessive trait. In a population of frogs, 50 are homozygous for the dominant trait, 34 are heterozygous, And 16 show the recessive trait. Which expression is the correct way to calculate the frequency of the dominant allele?
Answer:
PLATO AND EDMENTUM PEOPLE your answer is:
134/200
Explanation:
The expression represents the correct way to calculate the frequency of the dominant allele is 134/200.
What is a Dominant allele?A Dominant allele may be defined as a type of allele that significantly produces the identical phenotype whether its paired allele is identical or different.
The frequency of the dominant allele can be calculated by the following formula:
[tex]\frac{2 * Number of dominant individual + Number of heterzygote individuals}{2 * Total number of individuals}[/tex]
= [tex]\frac{2* 50 + 34}{2*100}[/tex]
= 100 +34/200 = 134/200.
Therefore, the expression represents the correct way to calculate the frequency of the dominant allele is 134/200.
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Your question seems incomplete. The most probable complete question is as follows:
In a particular species of frogs, black spots are a dominant trait in their absence is a recessive trait. In a population of frogs, 50 are homozygous for the dominant trait, 34 are heterozygous, And 16 show the recessive trait. Which expression is the correct way to calculate the frequency of the dominant allele?
50/100.84/100.50/200.134/200.100/2001. When homozygous white cattle are crossed with homozygous red cattle, each of the offspring has a
mis of white and red hairs. This blend of colors is called roan. What can you infer about the pattern
of inheritance involved in the formation of a roan coat in cattle? Explain your answer.
Answer:
When homozygous white cattle are crossed with homozygous red cattle, each of the offspring has a mix of white and red hairs. This blend of colors is called roan. What can you infer about the pattern of inheritance involved in the formation of a roan coat in cattle?
WW x RR= WR, WR, WR and WR
WW= Homozygous white cattle
RR= Homozygous red cattle
WR= Roan (Mix of red and white cattle)
WR x WR= WW, WR, WR and RR
When the roan cattle (WR) is crossed with one another, the offspring produced gives a mix of white and red cattle (75%) and homozygous red cattle (25%).
Explanation:
If when homo-zygous white cattle are crossed with homo-zygous red cattle, offspring have a mix of white and red hairs, then it is a case of codominance.
Diploid organisms (such as cattle) inherit two gene forms or 'alleles' for a given gene locus, one from each parent.An individual is homo-zygous when inherits the same alleles for a given gene locus, whereas an individual is heterozygous when inherits different alleles for a given gene locus.In cases of codominance, both alleles are expressed in heterozygous individuals, thereby forming a phenotype that is different from parental phenotypes in a double homo-zygous cross.In conclusion, if when homo-zygous white cattle are crossed with homo-zygous red cattle, offspring have a mix of white and red hairs, then it is a case of codominance.
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Oops! You were cleaning out the aquarium in the biology lab and you accidentally placed the salt water fish in the freshwater tank. What will happen to the cells of these fish
Saltwater fish in freshwater and freshwater fish in saltwater both suffer from osmosis effects that can be fatal. Saltwater fish cells could swell and burst in freshwater, while freshwater fish cells could dehydrate and collapse in saltwater, due to differences in osmotic pressures.
Fish cells have semi-permeable membranes, allowing certain substances to pass through while blocking others. When a saltwater fish is placed into a freshwater environment, a process known as osmosis occurs, where freshwater flows into the cells of the fish, making the cells swell and potentially causing the fish to die.
Conversely, a freshwater fish placed in the ocean, which has a hypertonic environment in comparison to the freshwater fish's body fluids, will experience the opposite effect. Water from the fish's cells will flow out into the surrounding salty water, leading to cell dehydration and possible death. Both types of fish spend energy to maintain osmotic homeostasis; freshwater fish actively absorb salt through their gills and secrete dilute urine, while saltwater fish secrete salt through their gills and produce highly concentrated urine to manage the osmotic pressures.
Which of the following expressions is not a function of mitosis?
growth
repair of injury
replacement of cells
production of gametes
Answer:
production of gametes is not a function of mitosis
Explanation:
Replacement and regeneration of new cells- Regeneration and replacement of worn-out and damaged tissues is a very important function of mitosis in living organisms. Mitosis helps in the production of identical copies of cells and thus helps in repairing the damaged tissue or replacing the worn-out cells.
"The energy necessary to perform this function comes directly from the
(1)exchange of H2O and O2 during respiration
(2)blood flowing through the organs
(3)ATP molecules produced during cellular respiration
(4)water that is eliminated by the organs"
The energy needed for biological functions comes from ATP molecules produced during cellular respiration (Option 3), involving the digestive, cardiovascular, and respiratory systems.
Explanation:The energy necessary to perform functions in living organisms mainly comes from ATP (adenosine triphosphate) molecules produced during cellular respiration (Option 3). Cellular respiration is an intracellular process that converts glucose and oxygen into carbon dioxide, water, and most importantly, ATP. This process requires the involvement of the digestive, cardiovascular, and respiratory systems. Digestion breaks down food to obtain glucose, while the respiratory system facilitates the exchange of gases, providing oxygen to the body and expelling carbon dioxide. ATP then is used as the main energy source for various biological processes.
3) Which of the following statements about
the tundra biome is true?
a. It is the coldest biome.
b. There are no summers.
c. It is the driest biome.
d. It is covered with trees.
Answer: A. It is the coldest biome
Explanation:
Answer:
A
Explanation:
Jane and Jill wondered if plant shoots always grew up toward the light. The two girls planted several pots of seeds. After the
seeds germinated, they removed them from the soil and and repositioned the seeds in the ground. They place one-third in the
normal position for growth, roots down and shoots up. This was the control group. They placed another third up-side down or
shoots down and roots up. They placed the last group on their sides so the shoots and roots were both oriented horizontally
What else should the girls do in order to ensure that their results are valid?
A)Fertilize the two experimental groups but not the control group.
B)Place one group of seeds outside and keep the other two groups indoors.
C)Be sure all other conditions remain constant throughout all three groups.
D)Keep the control group in the pot but place the other two groups in the
Answer:
C
Explanation:
The girls should be sure all other conditions remain constant throughout all three groups to get a valid result. The correct option is C.
What is a valid result of an experiment?The accuracy with which a method measures what it is intended to measure is referred to as its validity.
If research has high validity, it produces results that correspond to real physical or social properties, characteristics, and variations. One sign that a measurement is valid is high reliability.
The consistency of a measure is defined as whether the results can be reproduced under the same conditions.
The validity of a research study refers to how well the findings among study participants correspond to true findings among similar individuals outside of the study.
This definition of validity applies to all clinical studies, including those on prevalence, associations, interventions, and diagnosis.
To make it a valid result the girls should keep a constant condition throughout the experiment to get out a positive result.
Thus, the correct option is C.
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Helppp I don’t know the answers and need to know as soon as possible
Answer:
A) central nervous system
B) Peripheral nervous system
Select all the correct answers.
What are three types of media that could be included in a presentation?
examples
graphs
images
audio
O
facts
Reset
Next
Answer:
images, graphs, and audio
Explanation:
Answer:
The answer is
A. Audio
D. Graphs
E. Images
Explanation:
What do these panels do?
O
A. Capture energy from the Sun
O
B. Transform water into power
O
C Perform a nuclear reaction
O
R Burn biomass
SUBMIT
Answer:
These are solar panels, they capture energy from the sun
Explanation:
2. Species that evolve in different locations but similar environments can appear similar. This is known as
A)convergent evolution
B)geographic isolation
C)divergent evolution
D)continental drift
Answer:
The correct option is A.
Convergent evolution is one of the defined type of evolution and it is shown by the species belonging to different ancestors show similar characteristics due to the same residing environmental condition.
Explanation:
The creation of analogous structure takes place in the process of convergent evolution. This is illustrated by the occurrence of similar structure in two different species which were not observed in their respective ancestor. This is due to the residence of the associated species in the same environmental condition and facing the same problems of livelihood. One of the most common example is the flying ability of the insects, bats and birds.
What is key to preventing extinction of any one species?
brainlist. answer rn!
Answer:
first one- A)FAULT
second one-B)VOLCANIC ISLANDS
What makes a nerve cell and skin cell have different functions in the body?
Answer:skin cells help protect nerve cells send massages to the brain
Explanation:
How are protists different from bacteria and archaea
Explanation:
they are 10x larger as if you see a picture of a protists they're larger
they are eukaryotes so the organism consisting of a cell or cells in which the genetic material is DNA in the form of chromosomes contained within a distinct nucleus.
they have both single and multi celled organisms
The image is showing two possible ways non-homologous chromosomes may line up during metaphase 1 of meiosis 1. Which of Mendel's laws is this image depicting?
Answer:
The correct answer is Mendel's Law of Independent Assortment.
Final answer:
The image depicting non-homologous chromosomes lining up during metaphase I of meiosis I demonstrates Mendel's Law of Independent Assortment. This law explains that alleles of different genes are distributed to gametes independently.
Explanation:
The image depicts non-homologous chromosomes lining up during metaphase I of meiosis I, demonstrating Mendel's Second Law, the Law of Independent Assortment. According to this law, alleles for different traits are distributed to gametes independently of one another.
This is illustrated during metaphase I when chromosomes align at the metaphase plate in random orientations; this means that the orientation of one pair of homologous chromosomes does not affect the orientation of another pair. Consequently, the resulting gametes can possess any combination of the paternal and maternal alleles. It is important to note that this law holds only for non-homologous chromosomes, as genes located on the same chromosome may demonstrate linkage and do not assort independently.
Please help I will be ur friend.♥♥
Developed the first method of classification, based on habitat.
A. Aristotle
B. Linnaeus
Answer:
I believe it's A
Explanation:
hope this helps
a true breeding white mouse and a true breeding black mouse were crossed. All of their offspring were white. Which trait is dominant and which trait is recessive?
Answer:
the government
Explanation:
Answer:
A true breeding white mouse and a true breeding black mouse were crossed. All of their offspring were white. Which trait is dominant and which trait is recessive?
WW x bb= Wb, Wb, Wb, Wb
The trait that is dominant is the white mouse while the black mouse is recessive, Since after crossing all the offspring are white it reflects that the white mouse remains dominant all through.
WW= White mouse Homozygous dominant
bb= Black mouse Homozygous recessive
Explanation:
Your 2nd section should be about reproduction in an animal
of your choice. What is this animal’s gestational period?
How and where does this animal give birth? How does it
feed its young
make it grade 6 friendly pls
Answer:
1) Reproduction is a process in which offspring is produced due to the mating of male organism with female organism. Offspring is the baby of that organism.
2) Gestational period is the period that is required for the development of fetus until its birth. Fetus is unborn baby made of zygote. It occurs in mammals.
3) The baby organisms or offspring come out from the female organism's body.
4) The mammals feed their milk to their babies which is highly nutritious.
7. Explain what happens at a microscopic level inside a muscle fiber during
beginning with the nerve impulse.
O E
Enter veuresponse here
HER
S
HE
SHEETS
The question is not complete and is not available anywhere so it can be answered in a general way.
Answer:
At the ultrastructure level the nerve cell, has all the organelles in it. The organelles inside the cell helps in maintaining the cell alive and remains functional.
These include organelles such as nucleus, nucleolus and Golgi apparatus and mitochondria.
The microscopic level inside a muscle fiber is same like that of other cells besides the number of mitochondria is more.
Answer:
1. contraction
2. actin
3. tendons
4. epidermis
5. dermis
6. acne
7. A nerve signal from the brain arrives at the intersection of the nerve and muscle cells and releases acetylcholine from the neuron. This triggers chemical changes in the muscle cell involving ions, including Ca2+. Calcium triggers the thick filaments, made of myosin, to attach to the thin filaments, made of actin, in the muscle cell, and the myosin pulls the actin toward the center of the muscle cell. ATP causes the release of the actin fibers, allowing the muscle to relax and the process to begin again.
Explanation: answers to all questions on this section.
Penn Foster
How would the function of synovial joints be changed if they lacked joint cavities and the bones were United instead?
Explanation:
the person who answered is right so i say what they said
Do some outside research and write a short report about 2 different diseases. One disease must be caused by a bacteria and the other must be caused by a virus. In your report, include the following information:
Common name and scientific name of disease and organism that causes the disease
Some history about the disease like when were the worst/most recent outbreaks, what were some older types of treatments and remedies, how did people think the disease was transmitted, what did people do to avoid it and more
How the disease is transmitted
How the disease affects humans including symptoms
How the disease is treated today
Any other interesting facts you find
Include a works cited page with at least 4 different sources (2 for each disease)
Answer No 1:
Bacterial Disease:
Common name : Typhoid
Scientific Name: Typhi
History About disease:
Typhoid can be described as an acute illness which is caused by the bacteria: Salmonella enterica serotype Typhi.
Typhoid fever was responsible for a widespread plague in Athens in 430BC. This outbreak proved to be fatal for one third of the population of Athens. It is difficult to determine the cause of plagues and infectious diseases in early history, although some speculation is usually allowed.
Jamestown, an English colony in Virginia, is also thought by some historians to have died out as a result of typhoid fever. The fever proved fatal for more than 6000 settlers between 1607 and 1624, and may have been responsible for eliminating the entire colony.
Military and war environments have often been subjected to the presence of typhoid fever throughout history. In excess of 80,000 soldiers died as a result of typhoid fever or dysentery in the American Civil War. Likewise, the Spanish-American War led to infections with typhoid both on the field and in training camps.
Answer No 2:
The bacteria that cause typhoid fever spread through contaminated food or water and occasionally through direct contact with someone who is infected.The majority of people in industrialized countries pick up typhoid bacteria while traveling and spread it to others through the fecal-oral route.
This means that Salmonella typhi is passed in the feces and sometimes in the urine of infected people. You can contract the infection if you eat food handled by someone with typhoid fever who hasn't washed carefully after using the toilet. You can also become infected by drinking water contaminated with the bacteria.
Typhoid vaccine is used for the eradication of typhoid.
Answer No 3:
Name: Ebola
Scientific name: Zaire ebolavirus
Ebola is thought to first occur in Sudan in 1976. Ir infected over 248 people. the second Ebola virus emerged from Yambuku, Zaire, Ebola-Zaire (EBOZ).The third strain of Ebola, Ebola Reston (EBOR), was first identified in 1989 when infected monkeys were imported into Reston, Virginia, from Mindanao in the Philippines. Since then, the virus has been infecting people from time to time, leading to outbreaks in several African countries.
Answer No 4:
Ebola isn’t as contagious as more common viruses like colds, influenza, or measles. It spreads to people by contact with the skin or bodily fluids of an infected animal, like a monkey, chimp, or fruit bat. Then it moves from person to person the same way. Those who care for a sick person or bury someone who has died from the disease often get it.
Other ways to get Ebola include touching contaminated needles or surfaces.
You can’t get Ebola from air, water, or food. A person who has Ebola but has no symptoms can’t spread the disease, either.
Explanation:
This describes how many protons reside in the nucleus and identifies the element.
A. Symbol
B. Atomic Mass
C. Charge
D. Atomic Number
Answer: D. Atomic Number
Explanation:
Atomic number of an element is the number of protons in the nucleus of an atom the element. An atom has three fundamental particles: protons, electrons and neutrons. Protons and neutrons are found in the nucleus of an atom while electrons are found outside the nucleus. The atomic number of an element determines the properties of the element. No two atoms of different elements have the same atomic number, but two or more atoms of the same element can have the same atomic number but different atomic masses. When atoms of the same element have the same atomic number but different atomic masses, they are said to be isotopes.
Throught the reflection, make sure you have a copy of the Student Guide and your data table.
In your experiement, you tested this hypothesis:
Hypothesis: If a mouse inherits a particular form of one trait, then the inheritance of the other trait will not be affected because alleles assort independently.
white mouseA white mouse with red eyes and a black mouse with black eyes.
The hypothesis would not have been supported by the data if
traits independently assorted in approximately a 9:3:3:1 ratio.
the traits for white fur and red eyes were always inherited together.
all the F1 offspring had the same phenotype.
If the traits for white fur and red eyes were always inherited together then the hypothesis would not have been supported by the data.
Explanation:
The white fur and red eyed mouse had genotype AA RR or AaRr
The black fur mouse and black eye mouse had genotype aarr
The F1 offspring will have all offspring with same phenotype as shown in the Punett square.
AR AR
ar AaRr AaRr
ar AaRr AaRr
all the siblings are of same phenotype
Punnet square to show that genes assort independently.
Ar AR
ar Aarr AaRr 2 white fur and black eye: 2 white fur red eye
ar Aarr AaRr
The phenotype pattern of this punnet square shows that white fur and red eyes are not always inherited.
The law of independent assortment is shown from the cross that is by selfing.
AR Ar aR ar
AR AARR AARr AaAR AaRr
Ar AARr AArr AaRr Aarr
aR AaRR aArR aaRR aaRr
ar AaRr Aarr aaRr aarr
phenotype ratio of 9:3:3:1
9 WHITE FUR RED EYE
3 WHITE FUR BLACK EYE
3 BLACK FUR RED EYE.
1 BLACK FUR BLACK EYE
By cross checking, the options given it is concluded that the traits for white fur and red eyes are not always inherited together, the two traits are governed by different genes and are independently exhibited in the individual as stated in law of independent Assortment.
If the traits for white fur and red eyes were always inherited together, it would contradict the hypothesis of independent assortment of alleles. Therefore, option (B) is correct.
The notion of independent assortment states that gamete production segregates alleles for distinct qualities. A continuous pattern of allele inheritance shows genetic linkage, which contradicts independent assortment.
In genetic linkage, genes close together on a chromosome are inherited together more often. If white fur and red eyes were routinely inherited together, they would be physically near on the same chromosome and more likely to be transferred together during meiosis. This contradicts independent assortment, which believes that homologous chromosomes randomly position during meiosis to segregate alleles separately.
In essence, if qualities that are not physically connected in the same chromosome are inherited together, it demonstrates departures from independent assortment and supports genetic linkage or interaction between those genes. Therefore, option (B) is correct.
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Why do the 8 phases of the moon occur
Answer:
Explanation:
The phases are the result from the angle of moon and sun as viewed from the earth.
Answer:
How the moon orbits the earth affects the way we see the moon
Explanation:
What are the climates of the tropical rainforest ideal or perfect for?
good for plants
Explanation:
Tropical rainforest climates are ideal for year-round plant growth, biodiversity, and the evolution of specialized species.
Explanation:Tropical rainforests have climates that are ideal for a variety of things.
The stable temperature profile and high amount of sunlight provide favorable conditions for year-round plant growth. This results in lush vegetation and high biodiversity, with a wide variety of plant and animal life.
The tropical rainforest climate also offers a stable environment, which can promote the evolution of specialized species and provide potential sources for new drugs and medicines.Additionally, the consistent warmth and abundant rainfall in tropical rainforests create a continuous growing season, allowing plants to flourish without the limitations imposed by seasonal changes.
10. According to the passage, the bionic pancreas makes corrective actions that return blood
sugar levels back to normal. This artificial device helps
a. produce more sugar
b. break down blood cells
c. maintain homeostasis
d. cure their diabetes
Final answer:
The bionic pancreas assists in maintaining homeostasis by regulating blood sugar levels to normal through the administration of insulin, but it does not cure diabetes.
Explanation:
According to the passage, the bionic pancreas makes corrective actions that return blood sugar levels back to normal. This artificial device helps maintain homeostasis by adjusting the amount of insulin in response to the blood glucose levels, similar to how natural pancreatic function maintains blood sugar levels through the secretion of insulin and glucagon. This bionic device works to regulate blood sugar levels, but it does not cure diabetes, produce more sugar, or break down blood cells.
Earthworms improve the ____ of soil by mixing soil particles through their burrowing activity
Answer:
They improve the quality
Answer: mixing and loosening soil by burrowing
Explanation: