you discover a certain species of weed growing in soil contaminated with toxic pcbs, and later determine that the pcb resistance is due to a single dominant allele (r) and only the seeds with genotype r_ will germinate and survive. if 19% of the seeds from a randomly mating population of resistant weeds will germinate in contaminated soil, what is the frequency of the R allele
Answers
Answer:
f(R) = p = 0.1
Explanation:
Due to technical problems, you will find the complete explanation in the attached files.
Related Questions
The gallbladder provides ________ that aid(s) in transport of lipids across the intestinal membrane.
Answers
The gall bladder provides bile salt.
The gall bladder is a small pear-shaped organ that is located at the abdomen inferior to the liver.
This organ stores and releases the bile salt produced from the liver.
The bile salt is released through the bile duct into the duodenum of the small intestine.
The bile salt is use to emulsify fat thereby aiding it's transport across the intestinal membrane.
Therefore, the gall bladder provides bile salt that aids in transport of lipids across the intestinal membrane.
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What convinced
Darwin that species can change over time?
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Can someone please help me? I don’t really understand this so could you explain?
Answers
Answer:
Explanation:
Hello amyrabogan90, The problem is mostly highlighting the distinct differences in both of the animals. By looking at the animals we can see that the rather large brown bear has evolved and adapted to its environment by growing a thick layer of fur and fat. This allows the bear to not only stay warm during the especially cold winters but go without eating for an extended period of time as sources of food become increasingly scarce. This starkly contrasts the qualities of the buck pictured on the left. Bucks are much slimmer and have a relatively light coat. This allows them to move quickly to avoid predators and allows them to stay alive on a herbivores diet of grasses and other vegetation. Bucks are also highly competitive with other males and can often be seen fighting each other for mating rights. For this reason the buck will grow a large set of antlers in order to fight with.
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-HM
The energy in glucose cannot be used directly by cells and must be broken down into an intermediate smaller energy molecule called:
Answers
Answer:
ATP
Explanation:
Glycolysis in cells breaks down glucose and produces 2 ATP, 2 NADH, and 2 pyruvate molecules. This can be used by cells to create energy for cellular processes.
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What is the connection between global warming and climate change?
Answers
Global warming is one of the main factors that contribute to climate change. The Earth's temperature has been increasing gradually due to the rise in the concentration of greenhouse gases in the atmosphere, such as carbon.
What is a gas ?A gas is a state of matter that is characterized by a lack of definite shape and volume. In contrast to solids and liquids, gases will expand to fill any container they are placed in.
Gases are made up of individual atoms, molecules, or ions that are in constant motion and are not held together by strong bonds. They can be compressed and expanded with changes in temperature and pressure.
Examples of gases include oxygen, nitrogen, helium, carbon dioxide, and methane. Gases play an important role in many natural processes, such as respiration, photosynthesis, and the greenhouse effect, as well as in a wide range of human activities, including energy production, transportation, and industrial processes.
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Flower Dissection Chart
Name of flower structure
Picture of dissected flower structure
Function of the structure
(review the lesson)
Sepal
Petals
Stamen
Pistil
Answers
Name of flower structure: Sepal, Function of sepal: protection of the flower. Name of flower structure: Petal, Function: attracting the pollinators. Name of flower structure: Stamen, Function: Male reproductive structure. Name of flower structure: Pistil, Function: Female reproductive structure.
Sepals are the outermost whorl of modified leaves that protect the flower during the bud stage. They also help to support the petals after the flower has bloomed.
Petals are brightly-colored, often fragrant structures that are responsible for attracting pollinators to the flower. They are also responsible for protecting the reproductive structures of the flower.
Stamen is the male reproductive structure of the flower. It consists of two parts: the anther, which produces as well as releases pollen; and the filament, which supports the anther.
Pistil is the female reproductive structure of the flower. It is composed of three parts: the stigma, which receives the pollen; the style, which supports the stigma; and the ovary, which contains the ovules that eventually develop into seeds after fertilization.
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True or false. In nature organisms produce more offspring than can survive.
Answers
Answer: True
Explanation:
Organisms produce more offspring than actually survive. Organisms can die from many causes: disease, starvation, and being eaten, among other things. The environment can't support every organism that is born. Many die before they are able to reproduce.
How is the nitrogen cycle important to humans?
A.It produces free nitrogen that humans can breathe.
B.It converts nitrogen into a form that humans can obtain by eating other organisms.
C. It produces nitrogen compounds that humans can breathe.
D. It converts nitrogen into a form that humans can obtain by absorbing it through their skin.
Answers
The nitrogen cycle is important to humans in the following way: it converts nitrogen into a form that humans can obtain by eating other organisms (option B).
What is the nitrogen cycle?Nitrogen cycle is the natural circulation of nitrogen in a series of processes by which nitrogen and its compounds are interconverted in the environment and in living organisms, including nitrogen fixation and decomposition.
During the nitrogen cycle, atmospheric nitrogen is converted to nitrogen oxides by lightning and deposited in the soil by rain, where it is assimilated by plants and either eaten by animals (and returned as faeces) or decomposed back to elemental nitrogen by bacteria.
The usable form of nitrogen that is assimilated by plants becomes accessible to humans when they consume the plants, hence, depicting the importance of the nitrogen cycle.
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most of the long wave energy radiated from Earth and lost space on a cloudless night is
1. ultraviolet
2.infrared
3.visible light
4. gamma rays
Answers
Answer:
2.infrared
Explanation:
Infrared radiation or infrared light is electromagnetic radiation.
Infrared A radiation (IR-A) accounts for almost a third of total solar radiation, while UVA and UVB radiation make up only seven percent of the total solar spectrum.
Of the total solar energy that reaches the Earth's surface, the largest part of the radiation of as much as 54-56 percent is IR radiation, 39 percent is visible light and about five to seven percent is UV radiation.
9. Javier is a navigator for the navy His ship has just lost all power in the middle of the ocean, including access to your GPS. Which astronomical tool would be MOST helpful in this situation?
Answers
Melittin is a 26 residue polypeptide found in bee venom. In its monomeric form, melittin is thought to insert into lipid rich membrane structures. Explain how the amino acid sequence of melittin (depicted below) accounts for this property. Would you expect the entire polypeptide to reside in the membrane? Why or why not? HN -G-I-G-A-V-L-K-V-L-T-G-L-P-A-L-I-S-W-I-K-R-K-R-N-N-COO
Answers
The chief capability of melittin as a part of honey bee toxin is to cause torment and obliteration of tissue of gatecrashers that compromise a bee colony
Melittin is one of the littlest proteins known to precipitously overlay. Not at all like most proteins, it folds in non-polar media and is denatured in watery arrangements, and comprises 26 amino acids, for example, +H-Gly-Ile-Gly-Ala-Val-Leu-Lys-Val-Leu Thr-Gly-Leu-Supportive of Ala-Leu-Ile-Ser-Trp-Ile-Lys-Arg-Lys-Arg Gln-NH2.
Melittin is a fundamental 26-amino-corrosive polypeptide that comprises 40-60% of dry bumble bee (Apis mellifera) toxin. Albeit a lot is had some significant awareness of its solid surface movement on lipid layers, less is had some significant awareness of its aggravation delivering outcomes in the sensory system.
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Describe Cuba age structure diagram
Answers
Genetics. An autosomal study from 2014 found the genetic ancestry in Cuba to be 72% European, 20% African and 8% Amerindian
What it means to be Cuban?Cuban means belonging or relating to Cuba, or to its people or culture. countable noun. A Cuban is a Cuban citizen, or a person of Cuban origin.Cubans (Spanish: Cubanos) are people born in Cuba and people with Cuban citizenship. Cuba is a multi-ethnic nation, home to people of different ethnic, religious and national backgrounds.MB defines "Hispanic or Latino" as a person of Cuban, Mexican, Puerto Rican, South or Central American, or other Spanish culture or origin regardless of raceConversely, by using the Y chromosome in men, we found that 81.8% of Cubans are descendants of European fathers, 17.7% of African fathers and 0.5% of indigenous fathers (the latter discovered in the Caribbean for the first time, two men who are probably Taíno descendents)To learn more about Cuban refers to:
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Genetics. An autosomal study from 2014 found the genetic ancestry in Cuba to be 72% European, 20% African, and 8% Amerindian
What does it mean to be Cuban?Cuban means belonging or relating to Cuba, or its people or culture. countable noun. A Cuban is a Cuban citizen or a person of Cuban origin.
Cubans (Spanish: Cubanos) are people born in Cuba and people with Cuban citizenship. Cuba is a multi-ethnic nation, home to people of different ethnic, religious, and national backgrounds.
MB defines "Hispanic or Latino" as a person of Cuban, Mexican, Puerto Rican, South or Central American, or other Spanish culture or origin regardless of race
Conversely, by using the Y chromosome in men, we found that 81.8% of Cubans are descendants of European fathers, 17.7% of African fathers, and 0.5% of indigenous fathers (the latter discovered in the Caribbean for the first time, two men who are probably Taíno descendants)
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In which of the following do food webs connected all of the food chains?
Answers
Explanation:
Food webs are a group of connected food chains. Arrows in a food web go from the organism that is being eaten to the organism that is eating it. Food webs show that animals only eat one type of food. Arrows in a food web represent the flow of energy in a food web. Food webs show all of the eating patterns in an ecosystem.
What are some reasons organisms need nitrogen
Answers
Answer:
It is an important part of many cells and processes such as amino acids, proteins and even our DNA. Nitrogen is used to construct the basic building blocks of life, such as amino acids, nucleic acids, and proteins.
Explanation:
The heart is an organ in the circulatory system. Muscle tissue in the heart contracts to pump blood to the body. Connective and epithelial tissues in the heart hold the muscle cells together and in place in the chest. Nervous tissue in the heart coordinates how fast and hard the muscle cells contract.
Based on the information about the heart, which of these best describes the relationship between tissues and organs?
A.
None of the tissues in an organ help the other types of tissue to function.
B.
Organs function best when they are made up of only one type of tissue.
C.
Organs can function because they are made of different types of interacting tissues.
D.
Each type of tissue in an organ can carry out the function of the entire organ.
Answers
Many viruses and bacteria are pathogens that cause disease. Characteristics of each are listed in the chart below.
4)
10) Which argument correctly compares viruses and bacteria?
A) Viruses and bacteria are both living organisms because they are both capable of causinq disease.
B) Viruses and bacteria are both living organisms because they both contain DNA and are capable of reproducing on their own.
C) Viruses are living organisms because they contain DNA and are capable of reproducing inside of a host cell. Bacteria are not living organisms because they are made up of cells and are capable of causing disease.
D) Viruses are not living organisms because they are not made up of cells and cannot reproduce outside of a host cell. Bacteria are living organisms because they are made up of cells and do not require a host cell to reproduce.
Answers
Viruses are not living organisms because they are not made up of cells and cannot reproduce outside of a host cell. Bacteria are living organisms because they are made up of cells and do not require a host cell to reproduce. Option D
How do we compare viruses and bacteria?Viruses and bacteria are both microorganisms, but they have some important differences.
Viruses are smaller and simpler than bacteria, and they cannot reproduce on their own. They need to infect a host cell and use its machinery to make more copies of themselves. Bacteria, on the other hand, are single-celled organisms that can reproduce independently.
Viruses cause a range of diseases, including the common cold, flu, and HIV/AIDS, while bacteria can cause illnesses such as strep throat, tuberculosis, and food poisoning.
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how can overfishing lead to eco system collapse
Answers
name two abiotic factors that contribute to the growth of phytoplankton?
Answers
Answer:
(autotrophs) need light, nutrients, CO2 (dissolved gases) to photosynthesize
Explanation:
The abiotic factors in the ocean help the ocean to 'work'. For example, phytoplankton (autotrophs) need light, nutrients, CO2 (dissolved gases) to photosynthesize. All of these factors are crucial to the primary producer!
Bacterial communities are an important part of biological diversity and biogeochemical cycling in aquatic ecosystems. In this study, the relationship amongst the phytoplankton species composition and abiotic environmental factors on seasonal changes in the community composition of free-living and attached bacteria in Lake Erhai were studied. Using Illumina high-throughput sequencing, we found that the impact of environmental factors on both the free-living and attached bacterial community composition was greater than that of the phytoplankton community, amongst which total phosphorus, Secchi disk, water temperature, dissolved oxygen and conductivity strongly influenced bacterial community composition. Microcystis blooms associated with subdominant Psephonema occurred during the summer and autumn, and Fragilaria, Melosira and Mougeotia were found at high densities in the other seasons. Only small numbers of algal species-specific bacteria, including Xanthomonadaceae (Proteobacteria) and Alcaligenaceae (Betaproteobacteria), were tightly coupled to Microcystis and Psephonema during Microcystis blooms. Redundancy analysis showed that although the composition of the bacterial communities was controlled by species composition mediated by changes in phytoplankton communities and abiotic environmental factors, the impact of the abiotic environment on both free-living and attached bacterial community compositions were greater than the impact of the phytoplankton community. These results suggest that the species composition of both free-living and attached bacterial communities are affected by abiotic environmental factors, even when under strong control by biotic factors, particularly dominant genera of Microcystis and Psephonema during algal blooms.
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The abiotic factors that could affect the growth of phytoplankton is sunlight and nutrients.
Phytoplankton are small photosynthetic organisms that are found in water. They are photosynthetic and occur close to the water surface due to their requirement for light.
Photosynthesis is the process by which green plants make their own food in the presence of sunlight and CO2.
Sunlight provides the energy required for photosynthesis while nutrients such as phosphates are required for phytoplankton growth.
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What is the difference between a cell wall and a cell membrane?
Answers
Answer: A cell wall protects the plant and allows it to grow upright. A cell membrane allows things to pass through the cell
Explanation:
what condition could cause somatic cells to not divide?
Answers
Answer:
Gamete cell production
Explanation:
if a somatic cell is involved in gamete production, than it cannot undergo mitosis or meiosis, which is cellular division
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which of the following are part of the central nervous system?
Answers
Answer:
The central nervous system is made up of the brain and spinal cord
Explanation:
ion if that's the answer you were looking for but here go.
Which of the following structures would you expect to see in meiosis of a cell with a previously existing reciprocal balanced translocation?
a. etravalent complex in meiosis I
b. tetravalent complex in meiosis II
c. unpaired loop in meiosis I
d. inversion loop in meiosis I
Answers
Answer:
A
Explanation:
my answer is A because it is correct
At which point on the graph displaying human population groeth would factors like flooding and fires likely have the greatest impact on the growth rate?
Answers
can some one help me with this please
Answers
Answer:
5 answer is c
6 answer is a
Explanation: your welcome
PLEASEE HELP
Which describes electric cars or hybrid cars? (1 point)
O They produce more pollutants,
O They run fully on unlimited resources.
O They are fuel-efficient.
O They burn more fossil fuels than other cars.
Answers
Answer:They are fuel-efficient
They produce more pollutants,
Explanation:
Answer:
The correct answer is:
They are fuel-efficient.
Both electric cars and hybrid cars are known for their fuel efficiency. Electric cars are powered by electricity, which is a renewable resource, while hybrid cars use both an internal combustion engine and an electric motor to achieve better fuel efficiency. Compared to traditional gasoline-powered cars, electric and hybrid cars produce fewer emissions and are therefore more environmentally friendly.
Explanation:
What evidence have you discovered to explain how plants, such as the
sunflowers in the video, use sunlight to produce energy?
Answers
Sunlight causes the leaves of a sunflower to turn phototropically, following the sun's rays. The amount of light intercepted rises as a result, which boosts photosynthesis.
What reaction does a sunflower have to sunlight?The stem's east side develops during the day, causing it to swing to the west with the sun. The general growth begins to slow down as the sunflower ages.
On a sunflower, how does photosynthesis take place?Sunflower uses the C3 photosynthetic pathway and is a photosynthetic autotroph. The sugars created during photosynthesis are delivered as sucrose from the leaves to growing seeds, where they are utilised to create the oils found in sunflower seeds, among other processes.
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If you did an experimental cross and it got 1152 individual offspring how many of those offspring would have to be yellow to have a 3 to 1 yellow to green ratio from the cross
Answers
Answer: 864 yellow 288 green
Explanation:
A team of scientists and engineers is working together to develop a new cleaning product. The team has identified a species of bacteria that gets energy by breaking apart lipids and oils. The team wants to isolate the key substance that the bacteria use for this process, and then adapt the substance for the new cleaning product. Which macromolecule should the team try to isolate from the bacteria?
Answers
Answer:
A protein that specifically binds liquids or oils.
how do Euglena reproduce?
Answers
Describe one change in human anatomy that allowed speech, as well as one cost of this change
Answers
The descent of the tongue into the pharynx was the anatomical change which allowed speech.
What is Anatomy?This branch of science deals with the body structure of organisms and humans in general.
The descent of the tongue into the pharynx ensured that there are motor gestures which form a potentially infinite number of words and sentences.
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