Hepatitis A affects the liver. The incubation period of hepatitis A is around 28 days.
What is an incubation period?An incubation time is a period between the infection and the actual appearance of the symptom. It can be said that the time taken for the hepatitis A virus to show its symptoms like nausea, fever, and abdominal pain after infection is incubation time.
Hepatitis A virus spreads through contaminated food and water and is preventable by vaccines. It takes approximately 28 days for the virus to cause the symptoms of the disease from the time of its infection period.
Therefore, the incubation time of the virus is 28 days.
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why do fungi release enzymes from there tips?
Answer:
They absorb the food molecules that result from the external digestion.
Explanation:
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List two things that can increase genetic variation in meiosis and explain how they can impact the next generation of living things.
Environment, genetics, selective breeding, random mating, random fertilization, recombination, crossing over, etc
What is the relationship between the number of blood cells in the body and illness?
Answer:
Variations from the normal number, size, or maturity of the blood cells can be used to mean there is an infection or disease process. Often with an infection, the number of white blood cells will be elevated.
Which part would best model a cells nucleus
Answer:
which part of what
Explanation:
You are working with a population of snails. During the mating season, you observe that individuals in the population will only mate with others of the same genotype. For example, Mm individuals will only mate with Mm individuals, and mm individuals will only mate with other mm individuals. There are only two alleles for this gene (M is dominant; m is recessive). You have determined that the frequency of the M allele is 0.5. After one generation, what is the expected genotype frequency for Mm individuals in this population
If matings are not random in a population and individuals mate with other individuals of similar genotype/phenotype, h0m0zyg0us frequencies increase. In this example, the genotype frequency for Mm is F(Mm) = 0.25.
---------------------------------
In the exposed example, one of the assumptions of Hardy-Weinberg equilibrium is not accomplished. There are non random matings.
Individuals mate with other snails of the same genotypes
MM x MM
Mm x Mm
mm x mm
We can assume this is an example of matings by similar phenotypes.
Eventually, this mating system leads to an increase in the h0m0zyg0us genotype frequency, at the expense of heter0zyg0us ones in loci that determine the trait.
Allelic frequencies do not change. Only genotypic frequencies do.
This mating system tends to separate the population into two subgroups, decreasing the amount of heter0zyg0us individuals.
Matings Progeny
MM x MM 4/4 MMMM x Mm 1/4 MM + 2/4 Mm + 1/4 mmmm x mm 4/4 mmZygotic population of the next generation
F(MM) = 4/4 MM + 1/4 MmF(Mm) = 1/2 MmF(mm) = 4/4 mm + 1/4 MmSo, in the exposed example we know that the frequency of the dominant allele M is 0.5
f(M) = p = 0.5
knowing that p + q = 1, we can clear the equation to get the frequency of the recessive allele.
p + q = 1
0.5 + q = 1
q = 1 - 0.5
q = 0.5
f(m) = q = 0.5
Zygotic population of the next generation
F(MM) = 4/4 MM + 1/4 MmF(MM) = p² + 1/4 (2pq)
F (MM) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125
F(MM) = 0.375
F(Mm) = 1/2 MmF(Mm) = 1/2 (2pq)
F(Mm) = 1/2 (0.5)
F (Mm) = 0.25
F(mm) = 4/4 mm + 1/4 MmF(mm) = q² + 1/4 (2pq)
F(mm) = 0.5² + 1/4 (2 x 0.5 x 0.5) = 0.25 + 0.125
F(mm) = 0.375
The expected genotype frequency for Mm individuals in this population is F(Mm) = 0.25.
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what is science explain
Science refers to the construction of knowledge by using the scientific method. This method is based on empirical evidence.
Science can be defined as the construction of knowledge (scientific knowledge) by using the scientific method.
The scientific method includes several sequential steps:
ObservationAsk questionsForm a testable explanation (hypothesis)Test the hypothesisCollect results (empirical evidence)Draw conclusionsIn the scientific method, empirical evidence can be used to support the working hypothesis.
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science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws.
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what is the nuclelus funcion?
Answer:
The nucleolus is the most conspicuous domain in the eukaryotic cell nucleus, whose main function is ribosomal RNA (rRNA) synthesis and ribosome biogenesis.Explanation:
please asnwer A and B
A. How is the blood in the pulmonary arteries different from blood in other arteries?
B. How is the blood in the pulmonary veins different from blood in other veins?
Pulmonary artery carry deoxygenated blood while are there arteries carry oxygenated blood.
pulmonary vein carries oxygenated blood while the other veins carry deoxygenated blood
Why does an increasing population cause
increased waste production?
A. decreased food production
B, each new person creates more waste
C. each new person creates less waste
D. decreased resource use
What is the name of the disease caused by a lack of thyroid hormones?
Drag and drop each organism to match it to the correct ocean zone where it can be found.
Answer:
Neritic zone: Kelp
Sunlight zone: Plankton
Twighlight zone: Giant squid
Midnight zone: Sperm whale
Abyssal zone: Marine snow
Explanation:
Though MacArthur and Long each describe as what they see as an important part of living in the USA, they have very different purposes at work. Which statement BEST describes the different purposes of MacArthur and Long? usatestprep
Answer:
"MacArthur has spoken in his speech in the most articulate way about the sacrifice that the men of the country make to secure the well-being of citizens of the nations. The language is intended at making the listeners comply with his words by influencing and impressing them.
On the other hand, Long is trying to acquaint his listeners to the truth of the society that he has devised to be deteriorating the lives of common people of the United States."
(C)
Does the light independent pathway of photosynthesis continue to occur when the leaf disks are placed in the dark environment
Yes, the light independent pathway of photosynthesis continues to occur when the leaf disks are placed in the dark environment.
What is photosynthesis?“The process by which green plants make their own food in presence of sunlight, chlorophyll and carbon dioxide is called photosynthesis.”In this process oxygen molecule is released as by product.It has two pathways: light dependent and light independent.
In light dependent pathway, light energy is used by chlorophyll and is converted into chemical energy.In light independent pathway, the energy produced during light dependent pathway is used to convert carbon dioxide into carbohydrates. It occurs in the stroma of the chloroplast.Hence, it is true that the light independent pathway of photosynthesis continues to occur when the leaf disks are placed in the dark environment.
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A gene or trait that appears or expresses itself over a recessive trait is called
Answer:
it is called a dominant gene
Answer:
Its called a dominant gene.
Explanation:
"A dominant gene, or a dominant version of a gene, is a particular variant of a gene, which for a variety of reasons, expresses itself more strongly all by itself than any other version of the gene which the person is carrying, and, in this case, the recessive."
The population of mice in a local forest ecosystem has recently died out due to disease. In the past, these mice made up a large part of the diet of the forest fox.
What is the best prediction about what will happen to the foxes?
if the dna sequence is TAC CCC AAG CTC GGT ATC. what is mRNA
tRNA
AA?
The mRNA sequence would be:
AUG GGG UUC GAG CCA UAG
The mRNA sequence is complementary to the DNA sequence, in other words would just basically mean you do the opposite of the bases to the DNA sequence such that:
Cytosine with Guanine
Thymine (uracil for RNA) with Adenine
However, mRNA has Uracil instead of Thymine, so instead the uracil in mRNA binds with adenine.
Urcacil with Adenine
For tRNA, they have anticodons, meaning they have bases complementary to the mRNA strand, so the tRNA with the complementary anticodon sequence would be:
UAC CCC AAG CUC GGU AUC (DNA sequence but replace thymine with uracil)
For the amino acids, they would bond to the specific tRNA molecules with the specific bases on the anticodons.
What is the most valid conclusion regarding ocean depth temperature, based on the data? The temperature and salinity increase with increasing depth. The salinity increases as the depth goes closer to zero. The bottom of the ocean is frozen and salinity levels are low. The ocean temperature never rises above 10°C and salinity remains constant.
The most valid conclusion concerning ocean depth temperature is B. The salinity increases as the depth go closer to zero.
Effect of Salinity on Water Depth
Decreasing ocean temperature increases ocean salinity. These occurrences put pressure on water as the water depth increases with decreasing temperature and increased salinity.
What is Ocean Salinity?
Ocean Salinity refers to the saltiness or amount of salt dissolved in a body of water. The salt dissolution comes from runoff from land rocks and openings in the seafloor, caused by the slightly acidic nature of rainwater.
Thus, the most valid conclusion one can draw regarding ocean depth temperature is Option B.
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The pedigree on the right shows the inheritance pattern for an X-linked recessive disorder.
The mother of the individuals circled in pink is not shown on the pedigree. Based on the phenotypes of these individuals and their father, what are the possible genotypes of their mother? Check all of the boxes that apply.
- XAXA
- XaXa
- XAXa
The mother's genotype can be either [tex]X^AX^A[/tex] or [tex]X^AX^a[/tex].
For X-linked recessive traits, males (XY) can either be affected or free from the disorder, they cannot be carriers. Females (XX), on the other hand, can be affected, unaffected, or be carriers.
The circled male child is free from the disorder ([tex]X^AY[/tex]) while the females are carriers ([tex]X^AX^a[/tex]).
The male inherited the healthy allele, [tex]X^A[/tex], from the mother.
The female children inherit the affected allele from their father (who is affected for the disorder) and the other healthy allele from their mother.
This means that the mother cannot be affected for the disease. As it is, the pedigree points that all the children got their healthy alleles from their mother. This does not mean the mother has two healthy alleles though.
Thus, the possible genotype of the mother are [tex]X^AX^A[/tex] and [tex]X^AX^a[/tex].
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reproduction is not necessary for the continuation of species
Answer:
It is necessary.
Explanation:
If a member of a species doesn't reproduce, other members of the same species will become extinct.
What is carbon?
A. an element
B. a compound
C. an
organism
Who did the ram caught in the thicket (Genesis 22:13) represent?
Answer:
Woolley dubbed the statues “Rams Caught in a Thicket” as an allusion to the biblical story of Abraham. They more likely represent goats, which could often be seen standing on their hind legs, to reach leaves in the trees, as seen here.
Fill in the blanks below with the correct word to complete the sentence.
Water is warmed by the sun and
It is then cooled and
Finally, it is brought back to Earth in the form of
Answer:
Evaporates, Condensed, Liquid Water
Explanation:
Water is warmed by the sun and evaporates
It is then cooled and condensed
Finally, it is brought back to Earth in the form of Liquid Water
Answer:
Fill in the blanks below with the correct word to complete the sentence.
Water is warmed by the sun and evaporate
.
It is then cooled and condensation
.
Finally, it is brought back to Earth in the form of
Water
⇒ precipitation.
Explanation:
got it right 9/23/22
20% of the Amazon Rainforest has disappeared in the last 50 years. Which class of habitat loss contributes to this?
Answer:In the Amazon, around 17% of the forest has been lost in the last 50 years, mostly due to forest conversion for cattle ranching. Forests cover 31% of the land ...
Explanation:
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Answer: I'll answer that if you don't mind. Around 17% of the amazon forest has been lost in this last 50 years
Explanation: Around 17% of the amazon forest has been lost in this last 50 years to illegal logging (forest degradation) and forest conversion into cattle ranches. And now only 31% of forest is covering our beloved planets surface.
fun fact : A big chunk of forest was taken in 2019 close to 30 soccer fields every single minute that's A lot of forest taken
fun fact : 1 adult tree can produce 260 pounds of air that means 2 adult trees can make enough air for a family of 4 amazing how we rely on trees and yet we cut them down
hope you like my answer ;) added fun facts for fun
how does cytokinesis happen in prokaryotes
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Like eukaryotes, cytokinesis is the last stage of separation for prokaryotes in a process called binary fission. ... During binary fission, a prokaryote begins by replicating its nucleiod (DNA) in the cell. Once this happens, the two nucleiods travel to the ends of the cell where there is cytokinesis
Which best describes a temperate deciduous forest?
(A) Seasons are well defined,
(B) Short growing season,
(C) Low rainfall,
(D) all of the above.
Answer:
I think its D all of the above
An instrument is gradually lowered beneath the surface of the ocean to measure the temperature and salinity of the water. The graphs below show the change in temperature at each depth in kilometers below the surface.
Image of two graphs. The left graph has the x axis labeled temperature degree C ranging from 0 to 10. The y axis is labeled depth below surface, km, ranging from negative 1.8 to 0. The line on graph goes up vertically starting at about 2 degree C on the x axis and negative 1.9 km on the y axis. The vertical line goes up staying at about 2 degree C and climbs from negative 1.9 km to about negative 0.8 km. The line starts to shift right at negative 0.6 km. The line shifts to the right from 2 degree C to 5 degree C. The line shifts to right more starting at negative 0.5 km and reaches 10 degree C around negative 0.2 km. The line continues up vertically after negative 0.2 km. The right graph has the x axis labeled salinity ranging from 33.8 to 34.6. The y axis is labeled depth below surface, km, ranging from negative 1.8 to 0. The line on the graph starts at 34 on the x axis and 0 km on the y axis. The line starts to shift to the right at negative 0.1 km and levels out at 34.2 on the x axis. At negative 0.2 km the line shifts to the left and continues to shift left until it reaches negative 0.5 km. The line starts to shift to the right again at negative 0.6 and continues to shift right until it reaches negative 1.9 km on the y axis and 34.6 on the x axis.
What is the most valid conclusion regarding ocean depth temperature, based on the data?
A.) The temperature and salinity increase with increasing depth.
B.) The salinity increases as the depth goes closer to zero.
C.) The bottom of the ocean is frozen and salinity levels are low.
D.) The ocean temperature never rises above 10°C and salinity remains constant.
Answer:
B
Explanation:
The most valid conclusion regarding ocean depth temperature, based on the data, is the salinity increases as the depth goes closer to zero. The correct option is B.
What is an ocean?
An ocean is a large body of salt water. The oceans are divided into seven kinds. But they are interconnected to each other. The ocean is the largest water body, and it is also present in the form of freeze blocks of ice.
The graph is given of the temperature and salinity of the ocean, with the depth of the ocean the temperature of the ocean decreases, and the salinity increases.
The salinity of the water represents the presence of salt in the oceans. It. the graph proves that the salinity increases with the depth, coming closer to the depth.
Thus, the correct option is B.) The salinity increases as the depth goes closer to zero.
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explain how biodiversity affects ecosystem services.
This image shows the many
arteries and veins making up
the circulatory system. Which
of these delivers OXYGEN-
POOR blood from the body
back to the heart?
A. arteries
B. veins
C. neither of these
Answer:
B
Explanation:
Is cloning of endangered species a reliable and acceptable way to repopulate those ecosystems that suffer the loss of important species? Why or why not. (2 paragraph
minimum).
Cloning an extinct species is a possible answer for a suffering ecosystem. The only drawback is that scientists have not yet mastered cloning. When attempting to clone animals often they are deformed and therefore not able to reproduce let alone survive. Even when scientists do manage to clone animals without killing them, it takes many generations of selective breeding to get the species you are trying to revive which takes time, making the ecosystem even more damaged.
The study of a living being is called biology.
The correct answer is not reliable.
The duplication of the genes in the laboratory is called cloning.
The first clone species was the sheep whose name was a dolly.
Those species which are on the verge of extinction is called endangered species and they need extra protection to carry their gene to the next generation.
The cloning will be able to multiply the gene in the in-vitro culture but they will have a direct impact on the natural genes and the combination of the gene present in nature.
The natural species have all the desired genes which help them to survive in nature, whereas the clone species will not have the desired gene which is required to adapt to nature and they will extinct eventually. If these genes pass on to the next generation then the endangered species will also have less chance to survive in nature.
Hence, in my opinion, they cloning is not a suitable way to save endangered species.
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If a cell has 8 chromosomes, how many chromosomes will each of its daughter cells have after mitosis?
Answer:
From what I remember in my 9th grade biology class, it's usually half that amount.