Answer:
jfbjbvj
Explanation:
vvv
What kind of bond does carbon usually form?
OA. Hydrogen
OB. lonic
OC. Metallic
OD. Covalent
Answer:
covalent bond
Explanation:
hope this wiil help you
Question 7 (2 points)
A mocktail is a flavoured cocktail.
O True
O False
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.
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Mahmood finds a petrified log with thick tree rings. Which of the following is the most likely conclusion?
A. The past climate was very dry and hot.
B. The tree experienced poor environmental conditions.
C. The environment in which the tree lived was very pleasant.
D. The area where the fossil was found was once covered in ice.
Answer:
A tree/log with thick tree rings indicate a longer or faster growing season
so the answer would probably be - B. The tree experienced poor environmental conditions..
Explanation:
Hope it helps
Which organisms have the fewest similarities? Explain why these organisms still qualify as living things despite sharing few characteristics.
Vertebrates
invertebrate
plant
Please Help
Plants have the fewest similarities with the other two groups of organisms.
Plants vs animalsPlants generally comprise all living organisms that have chlorophyll and are able to manufacture their own foods by photosynthesis.
Animals, on the other hand, are living organisms that cannot manufacture their foods and are mobile. Animals are either vertebrates or invertebrates.
Plants qualify as living organisms because they are able to feed, excrete, reproduce, grow, respond to stimuli, die, and carry out other basic characteristics of living organisms.
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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:
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.
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.
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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.
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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.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.
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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
1. Michelle's classmates all decided to measure their height, and found the mean height to be 5'7". Tony's classmates all decided to do the same, and they too found the mean height to be 5'7". From the data that they collected, Michelle's classmates found their Standard Error of the Mean to be 2.3"; Tony's classmates found their Standard Error of the Mean to be 6.2". From the information provided, which class has students with more similar heights?
A.Michelles
B. It is not possible to determine this from this info
C.tony class
D.both are the same
It is not possible to determine this from this info. Thus, option "B" is correct.
What is standard error of mean?The standard error of mean is computed by dividing the standard deviation to the square root of sample size. It can be represented as
The standard deviation of the sampling distribution is known as the standard error of mean because it measures the accuracy of sample mean as compared to population mean.
Thus, option "B" is correct.
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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
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
A father has red-green colorblindness, meaning his X chromosome carries the X-linked disorder. His wife is not color blind, nor is she a carrier.
What are the odds that their daughter is a carrier for red-green colorblindness? Set up a Punnet Square to answer the question.
Answer:
100% carrier daughter
Explanation:
Remember,
---> individuals with XX are always female
---> individuals with XY are always male
Therefore, if all of the female offspring are carriers, this means the odds that their daughter is a carrier is 100%.
1No.Answer:- The genes that can give you red-green color blindness are passed down on the X chromosome. Since it's passed down on the X chromosome, red-green color blindness is more common in men. This is because: Males have only 1 X chromosome, from their mother.
2No.Answer:- Each daughter has a 50% chance of being a carrier and each son has a 50% chance of being color blind. The daughters who are carriers can have color blind sons with the same logic.
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.
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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.
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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.
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]
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What part of the body uses active transport to take up nutrients after concentration has reached equilibrium
The villi of the small intestine use active transport to take up nutrients after concentration has reached equilibrium.
What is Active transport?Active transport may be defined as the process that occurs against the concentration gradient and is mediated by carrier proteins. Metabolic energy is used to move ions or molecules against a concentration gradient.
During the process of digestion, the villi in the small intestine enthrall the soluble nutrients gradually. Over time, the concentration of nutrients in the villi acquires an equilibrium with the concentration in the gut. Until here, the nutrient uptake is carried by the process of passive diffusion.
But after attaining the equilibrium, the nutrient uptake is carried by the process of active transport.
The complete question is as follows:
What part of the body uses active transport to take up nutrients after concentration has reached equilibrium?
LungsStomachSmall intestineLiverTherefore, the correct option for this question is C, i.e. small intestine.
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Which of the following is a way that an ion can enter or leave the cell? Select all correct answers.
a. through a pump
b. through a leak channel
c. through a gated channel
d. through simple diffusion
The ions can enter or leave the cell by the instrumentality of a pump. Option A
What is cell?The cell is the smallest unit in taxonomy. It is the minutest level of life and all organisms are composed of cells. The cells are capable of carrying out all of their own activities.
The ions can enter or leave the cell by the instrumentality of a pump. This is how the sodium and the potassium ions are able to enter into the cell.
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BIOLOGY HELPPPPPPP ♀️
Answer:
The answer is aabb (Cremello).
Why do different individuals of the same species have different traits?
A.
Individuals have differences in their genes that result in protein variations.
B.
Individuals have different genes that produce proteins with completely different functions from other individuals.
C.
Individuals have proteins that produce genes with completely different functions from other individuals.
D.
Individuals have different proteins that cause variations among their genes.
Individuals of the same species have different traits because they have different genes which code for different proteins. B would be the correct option.
VariationsOrganisms of the same species can have different traits due to a difference in their proteins.
Genes are responsible for proteins and proteins are an expression of traits. Thus, with different proteins come different traits.
Hence, once there is a difference in the DNA sequence of organisms, different proteins will be produced, and different traits will be expressed.
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¿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 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.
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Which topic best fits the sentence below
Earth from the sun drives wind movement on earth
1)oceanography
2)metrology
3)geology
4)biology
5)astronomy
Gross domestic product (GDP) is ________.
Need help with my homework
Answer:
I AM SORRY I WOULD HAVE HELPED IF I HAVE STUDIED THIS TOPIC
Explanation:
why transits were being pursued by the KeplerMission
By observing planetary transits, NASA has discovered thousands of exoplanets. The Kepler mission was created to investigate the variety and structure of exoplanetary systems.
What is Kepler Mission?The Kepler Mission is specifically designed to survey our region of the Milky Way galaxy in search of hundreds of Earth-size and smaller planets in or near the habitable zone, as well as to determine what fraction of our galaxy's hundreds of billions of stars may have such planets.
By observing planetary transits, NASA has discovered thousands of exoplanets. The Kepler mission was created to investigate the variety and structure of exoplanetary systems.
Thus, to investigate the variety and structure of exoplanetary systems, transits were being pursued by the Kepler Mission.
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