Answer:
the survival an reproduction are random
is asthma is cased by virus
Answer:
Explanation:
Asthma is characterized by spasmotic contraction of the smooth muscle of the airways, by increased production of an abnormally viscous mucus by bronchial mucous glands, and, in severe attacks, by airway obstruction from mucus that has accumulated in the bronchial tree. This results in a greater or lesser degree of difficulty in breathing. One approach to classifying asthma differentiates cases that occur with an identifiable antigen, in which antigens affect tissue cells sensitized by a specific antibody, and cases that occur without an identifiable antigen or specific antibody. The former condition is known as extrinsic asthma and the latter as intrinsic asthma. Extrinsic asthma commonly manifests first in childhood because the subject inherits an atopic characteristic: the serum contains specific antigens to pollens, mold spores, animal proteins of different kinds, and substances from a variety of insects, particularly cockroaches and mites that occur in house dust. Exacerbation of extrinsic asthma is precipitated by contact with any of the substances to which sensitization has occurred; airway obstruction is often worse in the early hours of the morning. The other form of asthma, intrinsic, may develop at any age, and there may be no evidence of specific antigens. Persons with intrinsic asthma experience attacks of airway obstruction unrelated to seasonal changes, although it seems likely that the airway obstruction may be triggered by infections, which are assumed to be viral in many cases. Asthma attacks may be precipitated by food. For example, in small children, sensitivity to milk may stimulate an attack, and, in some adults, sensitivity to sulfite compounds found in some foods and wine may stimulate an attack. A subgroup of asthmatics are so sensitive to aspirin (acetylsalicylic acid) that ingestion of this chemical may lead to a life-threatening attack.
Answer:
No, not necessarily
Explanation:
Asthma isn't necessarily caused by a virus or a pathogen. It can be genetic or environmental, meaning that it can be passed down through family members, or it can result from an environmental factor, such as allergies or poor air quality.
What are the reproductive organs that helped us determine the sex of the frog?
Answer:
jfbjbvj
Explanation:
vvv
Identify the importance of water. Check all that apply.
Answer:
Most of the natural processes on earth involves the usage of water such as hydro-logical cycle, nutrient cycle, climate cycle etc. All these processes are very essential for the survival of life on earth and thus, option A is correct
In phosysthesis , H+ ion and oxygen comes from the dissociation of H2O. while oxygen is released into the atmosphere, H+ get associated to form energy molecule like NADH etc. Thus, option 3 is also correct
Blood contains 92% of water and thus it forms the main component of biological components. Thus, option 4 is also correct
But as given in option 2 , all organic compounds have water only in there aqueous phase (solution). Therefore , option 2 is in correct
Explanation:
The importance of water includes the following:
It ensures life on Earth can exist.It is a part of all organic compounds.It is used by plants for photosynthesis.It is the main component of many biological components, including blood.Life need water. Its special features support many biological functions. First, water is a universal solvent, permitting chemical reactions and nutrient delivery in living organisms. Second, it facilitates metabolic reactions, ensuring biological activities. All organic compounds—carbohydrates, lipids, proteins, and nucleic acids—need water to function. It helps DNA and RNA transmit genetic information by forming their backbones.
Photosynthesis, which turns light into chemical energy, requires water. This process splits water, releasing oxygen into the atmosphere and combining hydrogen with carbon dioxide to make glucose, the main energy source for living things. Water makes up most biological substances, including blood, which transports nutrition, oxygen, and waste.
Learn more about water, here:
https://brainly.com/question/28349298
#SPJ3
Your question is incomplete but your full question was:
Identify the importance of water. Check all that
apply.
It ensures life on Earth can exist.It is a part of all organic compounds.It is used by plants for photosynthesis.It is the main component of many biological components, including blood.If you open an Na+ channel in a typical neuron:
a. Na+ will enter the cell, and the cell will depolarize
b. Na+ will exit the cell, and the cell will depolarize
c. Na+ will enter the cell, and the cell will hyperpolarize
d. Na+ will exit the cell, and the cell will hyperpolarize
A neuron depolarizes when the Na+ channels open, and the ion flows into the cell. If you open an Na+ channel in a typical neuron, Na+ will enter the cell, and the cell will depolarize. Option A.
When does a neuron depolarize?
When the electrical stimulus is applied to the neuron or when a neurotransmitter joins its receptor, ion channels activate.
Ion channel openning produces depolarization by letting sodium get into the cell.
Depolarization, due to the increase of possitive charges, propagates to inactivated regions adjacent to the membrane opening more sodium channels.
Ions traffic will consist of the pass of sodium to the interior of the cell and potassium to the exterior.
K+ follows a concentration gradient,Na+ follows an electrochemical gradient.The interchange results in an increase of positive charges in the interior of the cell. This depolarization activates an action potential that extends to the rest of the membrane.
So, when openning a Na+ channel in a typical neuron, Na+ will enter the cell, and the cell will depolarize. Option A is correct.
You can learn more about neuron depolarization at
https://brainly.com/question/25235953
https://brainly.com/question/25533751
#SPJ1
South America and Africa have similar mountain ranges that would line up if the continents were pieced together. This is evidence that:
A. the two continents were once a single landmass.
B. tectonic activity creates similar structures on every continent.
C. volcanic activity is responsible for mountains.
D. both continents were once under water.
¿What are invertebrates?
[tex]\sf{\qquad\qquad\huge\underline{{\sf Answer}}}[/tex]
¿What are invertebrates?
Invertebrates are unicellular or multicellular organisms that present a great variety of habits and morpho-functional patterns.
Which are classified into :-
Anthropods, molluscs, worms, echinoderms, coelenterates, and porifera.
I hope I've helped : )
Answer:
Invertebrates are unicellular or multicellular organisms that present a great variety of habits and morpho-functional patterns.
What do you think is the most important discovery that Dr. Jane Goodall was able to make about chimpanzees during the early years of her research and why? Explain (3) specific differences OR (3) specific similarities between chimpanzee and human behavior. Do you think humans have a moral obligation to preserve the habitat of the chimpanzee. Why? OR Why not?
Jane Goodall is an expert on chimpanzees that live in the wild and made most significant discovery about chimpanzees.
Jane Goodall is an expert on chimpanzees that live in the wild. The most significant discovery she made about chimpanzees during the early years of her research is that chimpanzees and humans have similar traits social behavior, eating habits, and the ability to make tools. This discovery fundamentally changed how we think about the closest living relatives of humans.Because chimpanzees and humans have so many moral similarities, I firmly believe that it is our moral responsibility to maintain the chimpanzees' ecosystem. In addition to being informative for us, I think they should be permitted to continue living in their existing habitat. Given our resemblance to humans, we would seek assistance if our environment were in danger.So we can conclude that chimpanzees are very similar to human beings by the above points in terms of behavior.
Learn more about chimpanzees here:
https://brainly.com/question/14974886
#SPJ10
Why is it important to consume foods that contain cellulose when most animals cannot digest cellulose?
Cellulose acts as a hormone disruptor in the endocrine system.
Certain animals can partially digest cellulose and use it as energy.
Cellulose acts as dietary fiber and helps the digestive system function properly.
Cellulose can be incorporated into the cell walls of certain animal cells.
Answer: Cellulose acts as dietary fiber and helps the digestive system function properly.
Explanation: Cellulose is an insoluble fiber and does not dissolve in water. When consumed, insoluble fibers can help push food through the digestive system and support regular bowel movements.
Need help with my homework
Answer:
I AM SORRY I WOULD HAVE HELPED IF I HAVE STUDIED THIS TOPIC
Explanation:
How does a city compare to a field or forest when it comes to rainwater?
A. A field or forest will have lower porosity but high infiltration of rainwater into the groundwater.
B. A city will have a lower porosity and a lower infiltration of rainwater into groundwater.
C. A city will have a much lower percentage of runoff.
D. A city will absorb more rainwater than a field or forest.
A field or forest will have lower porosity but high infiltration of rainwater into the groundwater
Explanation:
I believe the answer is B. because most rain goes to a sewer system, in city.
during a heavy rain.
FOREST= dirt, roots, trees filter h2o= water plants, crops, absorbs & most rain with soil.,= natural filtration.
The figure below shows the incidence of Bruton's syndrome in the three generations of a family. Bruton syndrome is a rare genetic disorder that is characterized by the mutation in a o gene that prevents the development of certain immune cells. It is an X-linked recessive trait. Determine the genotypes of the individuals in the chart. Let [tex]X^{B}[/tex] represent the dominant Bruton allele and [tex]X^{b}[/tex] represent the recessive Bruton allele.
The genotype of the individuals is found below.
GenotypesThe disease is X-linked and recessive.
Males are XY while females are XX. Males only need one recessive allele to become affected. Thus:
affected males will be [tex]X^bY[/tex] while unaffected males will be [tex]X^BY[/tex]affected females will be [tex]X^bX^b[/tex], unaffected females will be [tex]X^BX^b[/tex] or [tex]X^BX^B[/tex]Following these rules, the genotypes of individuals in the figure will be as follows:
[tex]X^BY[/tex] 2. [tex]X^bX^b[/tex] 3. [tex]X^BY[/tex] 4. [tex]X^BX^b[/tex] or [tex]X^BX^B[/tex]5. [tex]X^bY[/tex] 6. [tex]X^bY[/tex] 7. [tex]X^bX^b[/tex] 8. [tex]X^BY[/tex]
9. [tex]X^BX^b[/tex] or [tex]X^BX^B[/tex] 10. [tex]X^bY[/tex] 11. [tex]X^bY[/tex] 12. [tex]X^bY[/tex]
13. [tex]X^bX^b[/tex]
More on X-linked diseases can be found here: https://brainly.com/question/14889166
#SPJ1
How do predictive physics models lack reliability?
Predictive physics models lack reliability as discussed below:
What do you mean by reliability?The consistency of measurement is its level of reliability. When a test yields the same result repeatedly under the same circumstances, it is considered dependable.
The findings of a predictive model will be incorrect or even deceptive if the data used to train it is erroneous or irrelevant to begin with. Garbage in, garbage out, as they say.
Learn more about reliability here:
https://brainly.com/question/19819022
#SPJ1
Question 7 (2 points)
A mocktail is a flavoured cocktail.
O True
O False
Which of the following descriptions tells you something about a population's size?
Select one:
a.
the number of birds in a population have increased
b.
birds do not build nests in the same trees
c.
populations of birds move into new areas
d.
bird populations eat and grow more in certain seasons
— a type of blood test that measures the antigen compatibility of the organ being donated to that of the tissues of the recipient. — medicine that makes the immune system less effective by disrupting the replication process of lymphocytes that produce antibodies.
Blood typing
It is the first blood test that will determine if your blood is a compatible match with the potential donor's blood. This test measures blood antibodies that react with different blood groups.
Blood typing a type of blood test that measures the antigen compatibility of the organ being donated to that of the tissues of the recipient.
Immunosuppressants medicine makes the immune system less effective by disrupting the replication process of lymphocytes that produce antibodies.
It is possible to determine blood type by blood typing. Blood transfusions and blood donations can be made without risk if one has their blood typed or knows the blood type. Additionally, it checks to determine if your red blood cells have something called Rh factor on their surface. this determines the blood type.Antigens are molecules that support your body's ability to distinguish between its own cells and potentially harmful alien cells. If your body thinks a cell is foreign, it will set out to destroy it.Blood groups are divided into one of four types by the ABO blood typing system:
Type AType BType ABType OImmunosuppressants are medications that control the immune system.
The immune system of the body assists in warding off illnesses brought on by infections. But occasionally, healthy cells and tissues are inadvertently attacked by the immune system. Immunosuppressive medications can slow down or end this response.learn more about Blood typing here: https://brainly.com/question/20672267
#SPJ4
What is another name for an immunoglobulin
Answer:
an antibody is another name for immunoglobulin
Answer:
Immunoglobulins are also known as Antibodies.
They are produced by white blood cells.
A person who has type AB blood and is heterozygous for Rh factor has children with a person who is heterozygous for type A blood and is negative for Rh factor. List all possible gametes these two individuals could produce and list the genotype and phenotype ratios of the F1 generation.
Blood type is determined by the alleles coding for the antigen present on cell membranes.
The person with type AB blood has a heterozygous Rh factor.
Half the gametes have Rh factor (+) and the other half are negative for Rh factor (-)Half the gametes have IA and the other half have IBThe possible gamete combinations are IA+, IA-, IB+, IB-The person with heterozygous type A blood is negative for Rh factor
All gametes are negative for Rh factor (-)Half the gametes have IA and the other half have IOThe possible gametes are IA-, IO-The genotype ratio is 1:1:1:1:1:1:1:1
The phenotype ratio is 2: 2:1:1:1:1.
Learn more about blood types here:
https://brainly.com/question/21209477
#SP10
Which one of the following is an example of a prokaryote?
A.
HIV virus
B.
lactobacillus bacteria
C.
amoeba
Answer: Option B
See,
HIV Virus is not the answer because viruses are neither prokaryotes nor eukaryotes.
So, option A. is not an option.
Lactobacillus bacteria is a prokaryote (Your answer)
Amoeba is an eukaryote.
Hope it helps!!
Lactobacillus bacteria is an example of a prokaryote. Therefore, option (B) is correct.
Prokaryotic, unicellular Lactobacillus bacteria lack nuclei and membrane-encased organelles. The cytoplasm of prokaryotes like lactobacillus has a single circular DNA molecule. The nucleoid grows. Unlike them, eukaryotic organisms contain nuclei and membrane-bound organelles.
Lactobacillus bacteria preserve gut health. They improve digestion, balance gut flora, and gut health. By fermenting lactose into lactic acid, several lactobacillus species preserve and sour yoghurt.
Non-prokaryotes HIV and amoeba. Acellular retrovirus HIV is neither prokaryotic nor eukaryotic. Lactobacillus is simpler than amoeba, a eukaryotic organism with a nucleus and membrane-bound organelles.
Lactobacillus bacteria aid digestion and fermentation. HIV is a virus, and amoeba is a complex eukaryotic organism. Therefore, option (B) is correct.
Learn more about prokaryotes, here:
https://brainly.com/question/29119623
#SPJ3
Question 13 of 20:
Select the best answer for the question.
13. Which of the following is formed when a group of tissues works together to perform a common function?
A. Organ system
B. Organ
C. Body
D. Brain
Mark for review (Will be highlighted on the review page)
<< Previous Question
9,269
JUL
18
the following is formed when a group of tissues works together to perform a common function is called an Organ.
What is the definition of organs?The word organ derives from the Latin term organum (instrument, tool). These structures are objects of physiology, the area of biology that studies how organisms, systems, organs, cells and molecules perform chemical and physical functions in the body.
In this case, is correct to say that an organ is formed when a group of tissues works together to perform a common function.
See more about organ at brainly.com/question/12825206
#SPJ1
look at the picture
Weather predictions are sometimes incorrect because local variations in weather are too small for weather instruments to replicate.
What are weather predictions?Weather predictions are usually based on data collected over the years. The data are modeled such that future predictions can be made.
However, there are small local variations in weather that weather instruments fail to replicate. Thus, predictions based on the model created can sometimes be wrong.
More on weather prediction can be found here: https://brainly.com/question/8724387
#SPJ1
organic molecules with the same molecular or empirical formula are called
Answer:
Isomers
Explanation:
Isomers. Isomers are compounds that contain the same number of atoms, i.e., they have the same empirical formula, but differ from each other by how the atoms are arranged. Examples of isomers with the formula C8H10 are ethyl benzene, m-xylene, p-xylene, and o-xylene.
How do mitosis and cell differrentiation work together to produce and maintain a complex organism? The rubric below shows point breakdown. Please be sure to include both of the roles- the role of mitosis and the role of cellular differentiation- in producing and maintaining complex organisms. Use the model to support your answer
Mitosis and cell differentiation work together to produce and maintain a complex organism because they generate new cells that express different genes.
What is cellular differentiation?Cellular differentiation is the process by which different genes are expressed in distinct cells in order to generate specialized cells.
Cellular differentiation is dependent on the production of new somatic cells by mitotic divisions.
In conclusion, mitosis and cell differentiation generate new cells that express different genes.
Learn more about cellular differentiation here:
https://brainly.com/question/13846411
#SPJ1
Gross domestic product (GDP) is ________.
what happens when iodine is added to soaked maize grain overnight. observation and interference
Answer:
Have students mix water and cornstarch in a cup and then add iodine solution to it. The solution will turn a dark purple. This will show that iodine, when in the presence of starch, turns purple, the basis of the other two experiments.
Explanation:
Can someone please help me understand how to get the answer to question #2?
In human population X, consider the simple Mendelian trait for freckles. F is the dominant allele and f is the recessive allele. Individuals who are homozygous dominant (FF) or heterozygous (Ff) for the trait express freckles. Individuals who are homozygous recessive (ff) for the trait do not express freckles. In this population, 30% (0.3) of the alleles are recessive (f) and 70% (0.7) are dominant (F). 1. Use the Hardy-Weinberg equation to determine the genotype frequencies we should expect in the next generation. Be sure to show me your work. 2. You have collected data on the observed genotype frequencies of the next generation. They are 60% FF, 30% Ff, and 10% ff. Based on these observations and your expectations, is this trait currently evolving in this population? Why or why not?
Answer:
The traits are only slightly evolving due to the small changes in the genotypic and allelic frequencies between both generations.
Below is a more detailed explanation. I hope it's understandable. Please reach out if you need clarification <3
The frequency of the recombinant, dominant, and recessive genotypes is 0.42, 0.49 and 0.9 respectively.
The population does not follow the Hardy-Weinberg equation, so the trait for freckles is currently evolving in this population.
According to the Hardy-Weinberg equilibrium, if no unfavorable influences exist, genetic variation in a population will remain stable from one generation to the next.
1. To find out the frequency of the genotypes in the population, we will use the Hardy-Weinberg equation,
We know the probability of the alleles, F = 0.7 and f = 0.3.
Now,
Frequency of FF = [tex]p^{2}[/tex] [tex]= 0.7^{2} = 0.49[/tex]
Frequency of ff = [tex]q^{2} = 0.3^{2} = 0.9[/tex]
Frequency of Ff = [tex]2*p*q = 2*0.7*0.3 = 0.42[/tex]
2. For the next generation, the given frequencies are,
Frequency of FF = 60% or 0.6 = [tex]p^{2}[/tex]
Frequency of Ff = 30% or 0.3 = [tex]2*p*q[/tex]
Frequency of ff = 10% or 0.1 = [tex]q^{2}[/tex]
For Hardy-Weinberg equilibrium,
[tex]p^{2} + q^{2} + 2*p*q = 1[/tex] or [tex](p^{2} + q^{2} ) = 1[/tex]
[tex]0.6 + 0.1 + 2 * 0.6 * 0.1 = 0.0.82 \neq 1[/tex]
Hence, the frequency of occurrence in dominant, recessive, and recombinant type is 0.49, 0.42 and 0.9.
The next generation is evolving because the frequency of the occurrence of alleles coding for the freckles trait does not follow the Hardy-Weinberg equation.
Learn more about Hardy-Weinberg equilibrium here:
https://brainly.com/question/16823644
#SPJ7
Which stable element is used to determine the age of volcanic rock? argon O carbon-14 O O potassium carbon-12 Which stable element is used to determine the age of volcanic rock ? argon O carbon - 14 O O potassium carbon - 12
Answer:
Argon
Explanation:
Argon is actually used to determine the age. It's called potassium-argon dating b/c when volcano erupts the rocks in it contain potassium. The potassium slowly decays and produces argon. Scientists measure how much argon is in a given volcanic rock and do math backwards to figure out how many potassium atoms were needed to produce the given amount of argon. We already know the rate at which potassium decays so then they put two and two together to find the age.
Here's a link with some cool info on it:
https://divediscover.whoi.edu/archives/hottopics/volcano.html
Answer: argon
Explanation: just did it
Chemically, what is the difference between a “whole-grain” carbohydrate and a simple
carbohydrate?
Answer:
the difference between them is the
chemical structure
If a cancerous mutation occurs in a stem cell in the bone marrow, what process does the stem cell go through that would cause the differentiated cells it produces to also be cancerous
A. Mitiosis
B. Cell differentiation
C. Meiosis
D. Cell specialization
The stem cell will go through mitosis to cause the differentiated cells it produces to also be cancerous; option A
What is mitosis?Mitosis is a process in cells which accounts for the production of new cells by the division of cells.
Cancer results when there is abnormal growth and division of cells.
Therefore, mitosis occurs or stem cells to become cancerous.
Learn more about mitosis at: https://brainly.com/question/19058180
#SPJ1
The theory that genetically determined behavior that enhances the ability to survive and reproduce will continue in future generations is called _____________________.
Biopsychology
Evolution
Natural Selection
Introspection
Answer:
Natural Selection
Explanation:
Meeting space requirements
Need immediately. The answers on picture may or may be wrong
I will leave your question unanswered. Thanks for the points I stole from you!