Answer: 20 minutes
Explanation: Binary fission is a very quick way to reproduce. Some bacteria are able to divide themselves up every 20 minutes. A billion bacteria can be produced in this way from one bacterium in just ten hours given the right conditions.
The diagram shows the structure of an organic molecule. A student
identifies the molecule as DNA. Does the student identify the
molecule correctly?
-phosphorus
-pentose
sugar
nucleoside
G
U
C
_nitrogenous
base
OYes. It is a single stranded molecule.
O No. It contains a five-carbon sugar.
No. It contains the nitrogenous base uracil.
OYes. It has a sugar-phosphate backbone.
Answer: No. It contains the nitrogenous base uracil
Explanation:
DNA does not contain Uracil. Uracil is used by RNA in place of Thymine.
Calculate allele frequencies in 5th generation. Record in Lab Data
Calculate genotype frequencies and number of moths in 5th generation. Record in Lab Data
Allelic frequencies ⇒ q = 0.9, p = 0.1. Genotypic frequencies ⇒ q² = 0.81, 2pq = 0.18, p² = 0.01. Number of individuals with each genotype ⇒ homozygous recessive = 850.5 individuals. Heterozygous = 189 individuals. Homozygous dominant = 10.5 individuals.
To answer this question, we will assume this moth population is in Hardy-Weinberg equilibrium.
What is the Hardy-Weinber equilibrium?
Hardy-Weinberg equilibrium is a theory that proposes that when populations are in equilibrium they are not evolving. And if populations are not evolving, their allelic and genotypic frequencies remain the same generation after generation.
Assuming diallelic genes code for a particular feature,
Allelic frequency
f(X) ⇒ p ⇒ frequency of the dominant allelef(x) ⇒ q ⇒ frequency of the recessive alleleGenotypic frequencies
F(XX) ⇒ p² ⇒ homozygous dominant frequencyF(Xx) ⇒ 2pq ⇒ heterozygous frequencyF(xx) ⇒ q² ⇒ homozygous recessive frequencyIn populations that are in Hardy-Weinberg equilibrium, the addition of allelic and genotypic frequencies will always equal 1.
p + q = 1p² + 2pq + q² = 1Now, we will use this framework to get the allelic and genotypic frequencies of the 5th generation.
We know that,
1000 moths were released in a forest (N = 1000). 250 were white (Typica), and 750 were black (Carbonaria).A diallelic gene codes for color. The dominant allele -D- codes for black (carbonaria), and the recessive allele -d- codes for white (Typica).Once released, these individuals produced five new generations, G1, G2, G3, G4, G5.G5 is composed of 851 white individuals (typica) and 199 dark individuals (carbonaria). The total number of individuals is 199 + 851 = 1050.1) Phenotype frequencies
Now that we have the number of individuals expressing each color and the total number of individuals, we can get the phenotypic frequencies.
To calculate them we just need to divide the number of individuals with each phenotype by the total number of individuals in this generation. So,
Total number of individuals in G5 → 1050White = Typica = 851 individualsBlack = Carbonaria = 199 individuals⇒ F(Typica) = 851 / 1050 = 0.81
⇒ F(Carbonaria) = 199 / 1050 = 0.189 ≅ 0.19
Notice that these frequencies were already given in the Phenotype Frequency table.
2) Allelic Frequencies
Now, we will use the phenotypic frequencies to get the allelic frequencies.
Carbonaria (black) is the dominant phenotype, so it includes homozygous dominant individuals (DD) and heterozygous individuals (Dd). We can not get the allelic frequencies from this data.
So, to get the allelic frequencies we will use the recessive phenotypic frequency because it only includes homozygous recessive individuals, dd.
Homozygous recessive Gentoypic frequency = Recessive Phenotypic frequencyGenotypic frequency → F(dd) → Represented as q²F(Typica) = F(dd) = q² = 0.81Recessive allele → dRecessive allelic frequency → f(d) → Represented as qf(d) = q = ??
q² = 0.81
q = √ 0.81
q = 0.9
0.9 is the recessive allelic frequency.
With this data we will calculate the dominant allelic frequency. To do this, we will clear the following formula,
p + q = 1
p + 0.9 = 1
p = 1 - 0.9
p = 0.1
So, now we also know that
⇒ f(D) = p = 0.1
⇒ f(d) = q = 0.9
3) Genotypic Frequencies
Now, we need to get the genotypic frequencies, F(xx)
⇒ F(DD) = p² = 0.1² = 0.01
⇒ F(Dd) = 2pq = 2 x 0.9 x 0.1 = 0.18
⇒ F(dd) = q² = 0.9² = 0.81
4) Number of individuals
Finally, we need to tell the number of individuals with each genotype. We just need to multiply each frequency by the total number of individuals in G5.
F(DD) = p² = 0.01F(Dd) = 2pq = 0.18F(dd) = q² = 0.81Total number of individuals = 1050
⇒ DD Black -Carbonaria- individuals → 0.01 x 1050 = 10.5
⇒ Dd Black -Carbonaria- individuals → 0.18 x 1050 = 189
⇒ dd White -Typica- individuals → 0.81 x 1050 = 850.5
From this results, we can conclude that the moths population is not in H-W equilibrium, because their allelic and genotypic frequencies changed through generations.
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Breakout Edu question 2 on family gathering I don’t know if anyone can help but I could use it.
Answer:
Explanation:
.
Chlorophyll a and bare
examples of what inside.
a chloroplast that
absorbs light energy?
A. Chloroplasts
C. White light
B. Thylakoids
D. Pigments this
Answer:
D. Pigments
Explanation:
Chlorophyll contains pigments (650; 700) which absorbs light
Submit your answer from Exam Activity 18-1 that infers why humans would not be able to repair and grow muscle without bacteria.
They would not be able to grow muscle without bacteria because bacteria is unicellular microorganisms which have cell walls but lack organelles and an organized nucleus, including some that can cause disease.
What is the relation between human and bacteria ?To mention a few functions, the bacteria in our systems help break down the food we eat, assist us access nutrients, and neutralise toxins. Additionally, by shielding colonised surfaces from encroaching pathogens, they contribute significantly to the fight against diseases.
Muscle mass can be impacted by the metabolites that gut bacteria create. Short-chain fatty acids are a class of metabolites that can accomplish that, they are created when bacteria ferment dietary fibre, and they have been demonstrated to boost muscle mass.Learn more about Human Bacteria relationship here:
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Look at this map of current volcano hazards. Click a few volcanoes to determine their warning levels. Why is it possible to have a warning system for volcanoes? If you were a volcanologist, would you watch certain volcanoes on the map more than others?
It is possible to have a warning system for volcanoes because most volcanoes issue warnings before erupting.
As a volcanologist, certain volcanoes on the map will be monitored more than others because some volcanoes are more explosive than the others.
Why do volcanologist monitor volcanoes?Monitoring volcanoes enables volcanologist to understand its activities during an unrest through seismicity, deformation and degassing. Some volcanoes are explosive while others are not so the volcanologist has to monitor the type of magma that flows from it.
The volcanologist also uses the map as an indicator to know when any volcano is scheduled to erupt because some volcanoes provide warnings before eruption.
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Answer:
By examining the pace of change in the gases released, the rate of change in seismic activity, the rate of change in ground deformation, and other variables, a volcanic eruption can be predicted. These are early warning indicators of an eruption. Volcanologists should concentrate on Kilauea and Shishaldin when studying the map because these two volcanoes are at the watch alert level and are more likely to erupt.
what does c 2h o stand for and what is the ratio between them
The simplest aldehyde, formaldehyde, has the chemical formula CH2O and is composed of hydrogen, carbon, and oxygen. Because of the 2:1 ratio of hydrogen to oxygen atoms in the formula CH2O, a carbohydrate can be identified.
Is water a sugar?The typical molecular formula for carbohydrates is (CH2O)n. These are the simplest carbohydrates and are needed as energy sources because they are both essential components of living things and fuel molecules. Perhaps glucose and fructose are the ones that people are most familiar with.
A carbohydrate is CH20?A monosaccharide has the generic formula (CH2O)n. Since monosaccharides are the simplest type of carbohydrates, they cannot be hydrolyzed or divided into other types of carbs.
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Which length of waves are MOST harmful
to humans?
A. visible light
B. short waves like gamma rays and x-rays this answer
C. long waves like radio waves
D. Infrared light
which type of human activity increases the amount of nitrogen in bodies of water
54. The table shows the composition of the urine of four people.
Which person is most likely to be suffering from kidney failure?
person urea content of urine
high
high
low
low
A
13
10
D
water content of urine
low
high
low
high
What happens when the calf liver DNA preparation is digested with EcoRI? What does this tell you about the number and distribution of EcoRI sites in the calf chromosomes?
Answer: It is cut open so they can
Explanation:
When calf liver DNA is digested with the restriction enzyme EcoRI, the enzyme will cut the DNA at specific recognition sequences.
EcoRI recognizes and cuts the DNA at the palindromic sequence 5'-GAATTC-3', where the caret (^) indicates the cut site:
5'-G ^ AATTC-3'
The result of the EcoRI digestion will be the formation of DNA fragments with varying lengths, depending on the location of the EcoRI sites in the calf liver DNA.
The number and distribution of EcoRI sites in the calf chromosomes can be determined by analyzing the pattern of DNA fragments produced after the digestion. This technique is called Restriction Fragment Length Polymorphism (RFLP) analysis.
If there are more EcoRI recognition sites in the calf liver DNA, the digestion will result in smaller DNA fragments. Conversely, if there are fewer EcoRI recognition sites, larger DNA fragments will be generated. By running the digested DNA fragments on an agarose gel and comparing the fragment sizes to a DNA marker with known sizes, it is possible to determine the number and approximate locations of EcoRI sites in the calf chromosomes.
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There are three plants, A, B, and C. Plant A is placed in a solution of the same solute concentration as that of the plant's cells, plant B is
placed in a solution of a higher solute concentration than that of the plant's cells, and plant C is placed in a solution of a lower solute
?concentration than that of the plant's cells. A cell of each plant is examined under the microscope. Which plant has the most tense cell walls
[tex]{ \: \: \: \: \: \: \: }[/tex]
Plant A is present in an isotonic solution; plant B is present in a hypertonic solution; and plant C is present in a hypotonic solution. The most tense cell out of three is cell C, which is present in the hypotonic solution as water goes into the cell.
What is a hypotonic solution?
The cell present in a solution can either take or lose water, and that depends upon the outside solute concentration or water potential. The plant cell A is present in the solution at an equal concentration of solutes, which means that the water potential is the same at both ends, that is, outside and inside, preventing any flow of water.
In plant B, the outside solution has more solutes than the water, so it has less water than that of the cell, and in this case, water will flow from the cell to the outside, resulting in a decrease in cell size. In cell C, the solution has low solutes, which means high water, so in this case, the water will flow from the outside to the inside and make the cell swell and more pressure on the cell wall.
Hence, cell C has a more tense cell wall.
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What two abiotic factors must be present in order for gypsum to form
The two abiotic factors that must be present in order for gypsum to form are that they have essential effects on dessert and the environment. In general, gypsum is made of many abiotic components. Abiotic components such as temperate deserts, and subtropical deserts.
One type of saline soil is formed by Gypsum. Gypsum is a soft, chalky mineral composed of calcium sulfate [tex]CaSO_{4}[/tex] and water [tex]H_{2} O[/tex]. Here spatial variability means it maintains the even layer of the soil its decomposition and can develop the soil moisture. Gypsum is a nonclastic rock and transparent mineral. Deserts can be categorized by their low mean rainfall, even though it is just as essential to calculate the temporal and spatial variability in yearly rainfall. Gypsum is made up of oxygen [tex]O_{2}[/tex], sulfur S, calcium Ca, and water [tex]H_{2} O[/tex].
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Photosynthesis is the process by which autotrophs produce their own food. It is an anabolic reaction in which energy is stored (endergonic). Consequently, Cellular Respiration is the opposite of Photosynthesis. In Cellular Respiration, heterotrophs consume food to produce energy. It is a catabolic reaction in which energy is released (exergonic). Both metabolic processes are essential to sustain life. Describe the similarities and differences between the biochemical pathways of Aerobic Respiration and Photosynthesis in eukaryotic cells. Include in your discussion the major reactions, the end products, and energy transfers.
The similarities between aerobic respiration and photosynthesis are that they are both metabolic reactions and ATP is used at some point in each of the reactions.
The difference between aerobic respiration and photosynthesis is that:
aerobic respiration produces carbon dioxide and water as an end-product whereas photosynthesis produces oxygen and glucose as an end-product. aerobic respiration uses oxygen and glucose as starting materials whereas photosynthesis uses carbon dioxide and water as starting materials ATP is used by photosynthesis, whereas ATP is produced in cellular respirationThe equations of photosynthesis and celli=ular respiration are given below:
photosynthesis: 6 CO₂ + 6 H₂O + ATP ---> C₆H₁₂O₆ + 6 O₂cellular respiration C₆H₁₂O₆ + 6 O₂ -----> 6 CO₂ + 6 H₂O + ATPWhat is photosynthesis?Photosynthesis is the process by which autotrophs produce their own food.
It is an anabolic process. The equation of photosynthesis is shown below:
6 CO₂ + 6 H₂O + ATP ---> C₆H₁₂O₆ + 6 O₂
Aerobic cellular respiration is a process by which oxygen is used by heterotrophs to break down food molecules to produce energy.
The equation of aerobic cellular respiration is given below:
C₆H₁₂O₆ + 6 O₂ -----> 6 CO₂ + 6 H₂O + ATP
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Currently, new regulations control the use of pesticides and chemical fertilizers to reduce what?
Pesticides and fertilizers create water and air contamination and significant health consequences. Chemicals are regulated to reduce water contamination.
What are pesticides?Insecticides, fungicides, and nematicides are all examples of pesticides. It is essential to exercise population control over the unwanted organisms and insects that cause severe damage to the crops. On the other hand, pesticides can never be used in excess, as this would have a negative impact on living things.
Fertilizers are added to the soil in order to improve its fertility and thus the development of plants. In addition, they contain hazardous substances.
Both insecticides and fertilizers are known to include compounds that are potentially harmful. These chemicals almost certainly will lead to the contamination of water and air, in addition to causing health problems for the organisms in the surrounding area.
Contamination of water is a critical problem that has been on everyone's minds for a considerable amount of time. It is possible to lessen the amount of water contamination by lowering the amount of pesticides and fertilizers that are used.
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what type of organic molecule is this?
Answer:
carbohydrates
Explanation:
because of the carbon & hydrogen
People who get better grades in school will be more successful in life. agree or disagree
response must be at least 5-7 sentences in length.
There is no conclusive connection between achieving high academic standing and having a high income.
Can you succeed if you don't get good grades?The truth is that grades are really not that significant. Regrettably, valedictorian status doesn't carry much weight in the actual world. After having less than outstanding academic careers, some of the world's most successful individuals have gone on to have amazing careers in business and public life.
Are grades crucial to success?When it comes to getting into college, high school grades are most important. When considering whether to admit or reject a student, institutions may take into account their grade point average (GPA). Your college grades are even more crucial if you plan to enroll in graduate or professional school.
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Choose one of the three light technologies (fiber optics, lasers, and holograms), discussed in this lesson, and research it. Write a one- or two-page report. You could include more details about how the technology works, a particular use for the technology, or how it was discovered.
The topic of discussion is Laser.
What is a Laser?This is referred to as a device which has the ability to emit light through the process known as optical amplification. This feature is based on the stimulated emission of electromagnetic radiation and was discovered by Theodore Maiman.
He formed the basis of the creation of the first working laser through his work in which he shone a high-power flash lamp on a ruby rod with silver-coated surfaces. This device functions by stimulating atoms such that light is emitted and amplifies it thereby forming a narrow beam of radiation.
This is used to perform different types of surgeries in the healthcare system and it is also used to weld and cut materials which makes it a very important tool in different fields.
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What important function can elodea cells perform that onion cells cannot?'
Elodea cells is capable of photosynthesis, while onion cells cannot
difference between elodea cells and onion cellsElodea cells and the plant itself serve as producers in natural settings because they are photosynthetic plants. Plants use light energy to transform carbon dioxide and water into sugars and oxygen through a process known as photosynthesis. It is the primary pathway for energy to enter an ecosystem.
Elodea cells photosynthesize because they develop in sunlight and are frequently categorized as waterweeds.
Onions cells, on the other hand, grow below the surface, therefore their cells cannot photosynthesize. Additionally, elodea cells have a vacuole that is filled with cell sap, a fluid that is mostly composed of water.
Conclusively, Elodea cells are structurally distinct from onion cells. Elodea cells are arranged in two layers, one of which is long and narrow and the other of which is short and wide. The cells of an onion are bigger and arranged in a single layer.
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Cell theory describes the basic function of all living things. Why is this considered a theory and not a law? Responses It was based on observations and does not require math calculations. It was based on observations and does not require math calculations. It is based on opinion and not facts. It is based on opinion and not facts. It can only be changed if a law is developed first. It can only be changed if a law is developed first. It was developed by a single person and not a large group of scientists.
Answer:
What is the cell theory? It has three main parts:
1. All living things are made up of cells.
2. Cells are the basic building blocks of life.
3. All cells come from preexisting cells created through the process of cell division.
As science evolved, three more components were added to the theory. Some biology classes don’t require you to know these parts of the cell theory because they weren’t part of the original definition, but it’s still useful to be aware of them:
4. Energy flow occurs within cells.
5. Hereditary information is passed from cell to cell.
6. All cells have the same basic chemical composition.
So what does the cell theory actually mean? Let’s break it down. The first part of the cell theory states that all living things are made up of cells. Anything that’s alive, from bacteria to plants to humans, is composed of cells. And what are cells? The literal definition is a cell is a group of organelles surrounded by a thin membrane.
The cell theory definition states that cells are the building blocks of life. Cells both make up all living things and run the processes needed for life. Your hair, skin, organs, etc. are all made up of cells. In fact, each person is estimated to be made up of nearly 40 trillion cells! Each part of a cell has a different function, and your cells are responsible for taking in nutrients, turning nutrients into energy, removing waste, and more. Basically, everything your body does, it does because cells are directing the action!
Explanation:
hope dat helped
Which of the following distinguishes the first step of waste disposal, no matter the system?
Responses
gather
use
transport
treat
Answer: it is gather
Explanation:
Answer: The correct answer is gather
Explanation: This answer has been confirmed correct.
The steps for waste disposal (in order) are; gathering, storing, treating, transporting, and using.
There is iron in Hawaiian rocks. What does the presence of Iron tell scientists?
According to Humayun's hypothesis, chemical reactions between rock and liquid metal at the Earth's core-mantle border are what caused the extra iron to enter the mantle.
How iron is found in Hawaiian rocks?According to research by Professor Munir Humayun, the Earth's mantle beneath Hawaii has a higher iron content than other parts of the mantle. Hot plumes of solid rock from the core-mantle barrier or the deep mantle rise at rates of a few centimeters per year to form hotspot islands, such as Hawaii.
Seismologists have long hypothesized that the deep mantle of the Earth, which is the rocky layer 1,000 to 3,000 kilometers below the Hawaiian Islands, has a higher percentage of iron, but no one has ever exactly tested it, according to Humayun. One of the four primary elements that make up the mantle is iron.
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List three organisms that live in the rainforest
Answer: Poison Dart Frog, Jaguar, Sloths
Explanation:
Which model—conservative, semiconservative, or dispersive—is the model we now know is correct?
Answer: Semi-Conservative
Explanation:
The strands separate as seen in the figure and are used to create new strands.
1.
Reptiles first appeared at the end of the _____ era.
Cenozoic Era
Archean era
Mesozoic Era
Paleozoic Era
Reptiles first appeared at the end of the Paleozoic Era. Thus, option D is correct.
What are reptiles?Reptiles first appeared during the Paleozoic Era. The Paleozoic Era occurred around 542 to 251 million years ago. More specifically, reptiles first appeared in the Upper Carboniferous Period known as the Pennsylvanian Period, which was from 323.2 to 298.9 million years ago.
Emergency procedures are processes that needs to have a quick action to arrive at a fast resolution. But it must still be conducted in an orderly manner. An elective procedure is a planned surgery. It is subjected to choice or election.
During the early period of the Paleozoic era (The Cambrian), there existed marine living organisms (phyla). During the Paleozoic era, volcanic activity was experienced. Lastly, the Paleozoic era was a geologic period that was prone to erosion and deposition of marine fossils.
Therefore, Reptiles first appeared at the end of the Paleozoic Era. Thus, option D is correct.
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Which of the following contain organs?
Choose 2 answers:
(Choice A)
A
organism
(Choice B)
B
cell
(Choice C)
C
organ system
(Choice D)
D
tissue
Answer:
organism and organ system
Explanation:
it has organ in both,
an organism is a living thing
organ system is a bunch of organs filed into a system in your body to do functions basically
pretty self explanatory.
Based on its anatomy, infer which animal requires more energy: an Earthworm or a Salamander? Justify your answer.
Based on its anatomy, the animal that requires more energy is the Salamander. This is because it has a more complex anatomy and physiological structure.
Why do living organisms require energy?Living organisms require energy because they have to perform metabolic activities for proper and ideal survival of organisms. Such organisms use numerous strategies in order to accomplish the task.
An earthworm delivers energy from the environment more easily than compared to salamanders. This is because they extract food energy from decaying organic matter like plants and animals that have died.
On the other hand, Salamanders deliver energy by consuming small insects and other tiny living entities. It uses a mechanism more similar to human beings.
Therefore, the animal that requires more energy is the Salamander. This is because it has a more complex anatomy and physiological structure.
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Critical Thinking and Applications
1. The brother of a woman's father has hemophilia. Her father does not have
hemophilia, but she is concerned that her son might. Could she have
passed the allele for hemophilia to her son? Explain.
No she have passed the allele for hemophilia to her son
Hemophilia is caused by a mutation or change and in one of the genes that provides instruction for making the clotting factor proteins needed to form a blood clot and this change or mutation can prevent the clotting protein from working properly or to n=be missing altogether and these genes are located on the X chromosomes and the symptoms are
Unexplained and excessive bleeding from cuts and injuries or after surgery or dental workmany large or deep bruisesunusual bleeding after vaccinationpain and swelling or tightness in your jointsAnd if mother is heterozygotes for hemophilia and the father does not have so each son or daughters has an 1 in 2 chances of getting hemophilia and here in this case the brother of a woman's father has hemophilia her father does not have hemophilia, but she is concerned that her son might so the son doesn't have hemophilia because her father does not have hemophilia her uncle has hemophilia so she doesn't passed the allele for hemophilia to her son
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How do the digestive tracts of the Nematode and Earthworm differ?
Answer:
Unlike the flatworms in which food and waste enter and exit from the same opening, nematodes have a complete digestive system. An animal with a complete digestive system has a mouth at one end, a long tube with specialized parts in the middle, and an anus at the other end.
Explanation:
someone help me on this
Answer:
Explanation:
h
