Answer:
Conditional genes enable to study the gene function by manipulating the gene of interest
Explanation:
Conditional alleles are widely used in molecular genetics to study gene function in target tissues or developmental stages. A conditional allele can be produced by introducing two recombinase recognition sites (SRSs) at flanking regions of the target gene, thereby deletion/inversion of these sites induced by a specific recombinase will produce a null allele. Generally, conditional alleles are designed by introducing LoxP sites flanking the gene of interest; however, classical gene targeting methods (i.e., by homologous recombination) have been historically used in order to produce conditional alleles.
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The functional units of kidneys where blood is filtered and urine produced are called
A.Pyramids
B.Nephrons
C.Calyces
D.lobules
E.Lobes
Answer:
B.Nephrons
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Using the specific steps of the scientific method, tell me how you would use the scientific method to solve this problem: A family wants to test the effectiveness of a misting shower head in conserving (saving) water compared to their regular shower head.
Answer:
Explanation:
Scientific Research is a method used in the construction and testing of a scientific hypothesis.
It has six steps that can be used in solving questions ask or observations made which is A family wants to test the effectiveness of a misting shower head in conserving (saving) water compared to their regular shower head.
Steps to follow:
Make an observation: An observation would be made on how water is been used in the house and how it can be conserved, this observation is what brings about the question asked
Ask a question : The question is
which is more effective in conserving water a misting shower head or regular shower.
Form a hypothesis, or testable explanation: An hypothesis is formulated for the question asked
Example: Null hypothesis: Mistling shower conserves more water than shower head
Alternative: Mistling shower conserves less water that normal shower.
Make a prediction based on the hypothesis: Predictions are made on what could be the cause if there is indeed a difference and what could cause the difference
Test the prediction: An experiment is conducted to test the hypothesis if indeed Mistling is better than normal shower, the appropriate method is determined to be used for the experiment.
Iterate: The result gotten helps to butters our hypothesis if its to be acceoted or rejected. If rejected further research can be conducted on the effectiveness of normal shower in conserving water.
Which of the following is a hypothesis that could be tested in a High School Biology classroom?
Answer:
Discover the volume of a balloon.
Explanation:
Get a balloon and a piece of paper. Cut the paper to make a line, and make sure it is 100 cm x 2 cm Take on of the balloons and inflate it several times so you are sure you can inflate the balloon with only one breath. Take a deep breath and inflate the balloon. Use a binder clip to hold the neck so no air escapes. Make a measurement of the circumference of the balloon using v = c3/6(pie)2 - the formula is c cubed divided by 6 times pie squared equals volume. Create a graph for them to answer, and then give questions for them to turn in.
Select the statements that accurately describe endocytosis.a. The cell synthesizes proteins that pump large hydrophilic materials into the cell.b. The cell selectively filters small nutrients through specialized membrane pores.c. The cell expends energy to transport materials into the cytosol.d. The cell membrane invaginates and pinches off, creating a vesicle within the cell.e. The cell membrane pinches off to form an extracellular vesicle joined to the cell by filaments.
The answer is the cell membrane invaginates and pinches off creating a vesicle within the cell.
1-5 fill in the blanks
Answer:
1 nervous tissue
2 stomach
3 cartilage
4 pleura membrane
5 granulation process
Explanation:
u can google the terms that I provided
Which quantity may be calculated directly using Newton’s second law of motion? weight velocity position direction
Answer: Newton's second law of motion can be used to calculate weight.
Answer:
Weight
Explanation:
Suppose a gene from a cow is introduced into a frog. This results in a ________ transgene.
Answer:
Heterologous transgene.
Explanation:
Heterologous transgene can be defined as the expression of a gene from another animal into another. Such an animal that this gene is introduced to does not have such a gene in them naturally, this is done through a firm of DNA technology.
So when a gene from an animal such as a cow is put into another animal like the frog, the result is heterologous transgene.
What term is used to describe 100’s or 1000’s of amino acids chemically combined?
Answer:
Polypeptide
Explanation:
Amino acids are the building block and simplest unit of protein molecules. The structural composition of each amino acids is made up of an amine group (-NH2), a carboxylic acid group (-COOH), a hydrogen atom (H) and a R side chain that differentiates every amino acid from one another.
In a reaction process called condensation, amino acids are chemically joined together via the amine group of one and the carboxylic group of another. This process releases water molecule (H20) to form a bond called PEPTIDE bond between the amino acids. Several amino acids in their 100’s or 1000’s that are chemically joined this way forms a POLYPEPTIDE chain, which in turn forms the protein molecule.
In biology, interacting populations in a particular area are called an
10. Read the following hypothesis: Plants that receive too much water will not grow well because their roots
begin to rot. Suppose an investigation is planned to explore the hypothesis. What is the independent
variable of the investigation?
the amount of water given to the plants
the type of plant that is used in the experiment
the height of the plants at the end of the experiment
the mass of the plants at the end of the experiment
Answer:
the amount of water given to the plants
Explanation:
the independent variable is the variable that the researcher controls. if you want to see how the amount of water affects roots, you would add less or more water, which is the variable that is being controlled by the researcher!
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If a purebred white horse C^w and purebred black horse C^B are bred together, what is the likehood that their offspring will roam with both colors represented?
O 0%
O 25%
O 50%
0 100%
Answer:
The likelihood that their offspring will roam with both colors represented is of 100%.
Explanation:
The exposed example brings up the case of a codominance example. When the hair color of horses is codominant, roan coats occur. Roan horses express both the colored and the whited hairs, with some of the animal´s parts expressing mostly the colored hairs, such as head, tail, and legs. These animals have white hair and another solid color (such as black). When two purebred animals with different genotypes and phenotypes are crossed, the whole offspring will be heterozygous. In this case, a purebred white horse C^w and purebred black horse C^B are bred together. The offspring will carry the heterozygous genotype C^wC^B. The offspring will have both red and white hairs.
In codominance, both alleles can be expressed. In these cases, heterozygote individuals instead of showing an intermediate phenotype, express both of the alleles (red and white hair). Their phenotype is an additive expression of their parents' genes.
Cross) purebred white horse C^w and purebred black horse C^B
Parental) C^w C^w x C^BC^B
Gametes)C^w C^w C^B C^B
F1) 100% roan animals, black and white.
100% Heterozygous C^wC^B
1. How does Dr. Werner's project protect iguanas and help local farmers too?
2. Why do you think that she trains farmers to raise and value iguanas?
a. What could her larger goal be?
3. Can you think of a similar project that would be suitable for your area?
Answer:
hi sir this channel and subscribe and rainfall the plant is a push and rainfall the forests and the nucleus is a
you and two friends enter a contest to count the number of jelly beans in a jar. your guess are 371, 271, and 500. the actual number is 700. based on this information, which of the following statements is true
Answer:
Neither precise nor accurate.
The values are not close to 700 (not accurate) nor are they close to each other ( not precise)
please help marking as brainliest image is shown down below with questions. Answer is only needed without explaination.......
Answer:
BrainlySakeen have already wrote it.You water three sunflower plant with salt water. Each plant receives a different concentration of salt solutions . A fourth receives pure water. After a two -week period, the height is measured . What is the independent, dependent and controlled variable.
Answer:
Independent - Water/Type of water (salt and pure)
Dependent - Height of plant
Controlled - Amount of water
Explanation:
Independent is what the experimenter manipulates (in this case being the type of water.)
Dependent is what the experimenter measures and is a result of the independent (in this case being the height of plant)
Controlled is what you are trying to keep the same (in this case the amount of water you give each plant.)
In the experiment given, the independent variable is the salt water, the dependent variable is the height of each plant, and the sunflowers are the control variable.
Variables in an experiment can be one of three kinds:
Control Dependent IndependentThe dependent variable is the variable that will change based on the other variables, this is often what the experiment seeks to measure. In the case given, the variable that will be measured is the height of the plants, therefore this is the dependent variable.
The independent variable is one that will not depend on the other variables in the experiment. Since the salt water used for each plant does not depend on the kind of plant or on its height, we can infer that the salt water is the independent variable of this experiment.
The control variable is the variable that remains constant in an experiment in order to not affect the outcome. Since for each case in this experiment there is no difference in the kind of plant that is used, we can say that the sunflower plant is the control variable.
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Several classes of students wanted to know if the temperature of the soil changed with the temperature of the air. They
recorded the temperature of the soil and the air in the same place, three times a day, for three days. Each class made a chart.
At the end, two classes compared charts. Their results were different.
What could the students in the two classes do to figure out why their results were different?
A)
They could see which chart looks the best.
B)
They could go to a third class and copy their results.
They could check each others' work and look for mistakes.
D)
They could let the teacher tell them whose numbers are correct.
In the carbon cycle, decomposition by bacteria causes the:
A. absorption of reactants for photosynthesis.
B. conversion of inorganic carbon into organic matter.
C. release of carbon dioxide from organic matter.
D. breakdown of fossil fuels into usable energy.
SUBMIT
Answer:
C. Release of carbon dioxide from organic matter.
Explanation:
Worldwide health issues are complex real-world problems. So why is there often not a single solution to these problems?
Answer:
Worldwide health issues are complex real-world problems because this problems are usually caused by diseases, pests, vectors and poor hygiene. All the factors listed vary according to geographical and economic conditions. Hygiene is good and better in first world countries such as USA and very poor in Third World countries.
Pests and diseases are also sometimes peculiar to a certain area which makes the issue of solving world health issues a very complex one as a result of it not being universal most of the time.
What is an advantage and a disadvantage of using 4.5-7.5 paper for PH analysis?
Advantage: You can know the exact ph value with a narrower range.
Disadvantage: You don't know the exact ph value on a regular scale.
The advantage of using the 4.5-7.5 paper
The 4.5-7.5 paper gives an accurate data or response when compared to the 0-14 paperThe disadvantage of using the 4.5-7.5 paper
It is impossible to know the exact pH on the regular pH scale when using this paper.A pH is often used to measure the following; concentration of hydrogen ions in a solution, the alkalinity, acidity, or neutrality of a solution.A 4.5-7.5 paper is said to be more accurate or right when compared to 0-14 paper because the colors on the pH paper are very similar to more than one color on the pH color chart and so you need the one that we give you the accurate data of what you want.Conclusively, we can say that the advantage of using the 4.5-7.5 paper is that:
The 4.5-7.5 paper gives an accurate data or response when compared to the 0-14 paperThe disadvantage of using the 4.5-7.5 paper
It is impossible to know the exact pH on the regular pH scale when using this paper.Learn more from
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What are the sources of energy for the providers of Chemical compound
Answer:
Experience gained from over 20,000,000 operating hours. Clean energy production with biomass gasification. wood gasifier. Combined heat and power. Biomass CHP. biomass gasification.
Answer:
1. Natural Gas
2. Natural Gas Liquids
3. Heavy Liquids
4. Electricity
5. Coal
6. Liquefied Petroleum Gas
e.t.c
Consider these sentences. Scenario A: Carmen reads an article in Tasty Food magazine stating that eating an apple can help you feel awake and alert. Scenario B: Yuki reads an article in the Professional Journal of Medicine stating that ginger root can help prevent some types of cancer. Which article is more likely to have been peer reviewed? How do you know?
Answer:
Scenario B is more likely to have been peer-reviewed because it was published in a scholarly journal (Professional Journal of Medicine).
Explanation:
A peer-reviewed article is an article that has undergone review by experts in the same field as the author in order to ascertain how original and quality-oriented the article is before publication in a journal. The experts from the same research field as an author are the "PEERS". A successful peer-reviewed article is deemed to be of high quality.
Although there are many features an article must possess in order to know it has been peer-reviewed but one of the most important features is that the article will be published in a REPUTABLE SCHOLARLY JOURNAL. This is the case of the article in scenario B, which was published in the Professional Journal of Medicine not just any non-academic random magazine as in scenario A.
Answer: The article that Cicely read (Scenario B) has been peer reviewed. This article is published in a scientific journal and has been judged for quality by other professionals in the field.
Explanation: I just took the quiz on Edge, I hope this helps!
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What is the relationship between biotechnology, sharkskin, and disease resistance?
a. Bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it.
b. Disease-causing microbes have been genetically modified to keep them from infecting the skins of sharks.
c. Scientists have created a device that can be attached to the skins of sharks that dramatically increases their abilities to resist disease.
d. Sharkskin produces many chemicals that can be collected and used to create antibiotics.
Answer:
A
Explanation:
a. Bioengineers have developed an artificial sharkskin that does not allow resistant bacteria to grow on it.
A study where you try to observe subjects in a natural environment is a(n):
A. hypothetical study.
B. performance study.
C. observational study.
D. experiment.
1. Simple columnar and pseudostratified columnar epithelium both are considered simple epithelium that consist of column-shaped cells.
A. True
B. False
B. Simple columnar cells line up next to each other whereas there is an irregular arrangement with cells varying in height and shape in pseudostratified columnar epithelium, giving the impression of stratification.
A. True
B. False
Answer:
Both options are true.
Explanation:
The cylindrical epithelium is a simple epithelium, which is characterized by having a cell layer, where all the cells are supported on the basement membrane, and its nucleus has reverse polarization in relation to the rest of the cells of our body, that is, they are found in a not very common position.
Simple cylindrical epithelia are found in areas of absorption or assimilation and exchange of gases or nutrients, since this shape is what allows them optimal diffusion through the epithelium, an example of the tissues in which this cellular architecture is found. They are the intestinal tract and the respiratory tract.
In the case of pseudostratified epithelium, it is very similar in function to the cylindrical one, with the difference that it gives a multilayered appearance, that is, its cells are stacked one from the other, giving the appearance of more than one epithelial layer as the stratified epithelium of our epithelial organ, but nevertheless it is not like that, there are many cells of irregular shape with a support in the basal one, that is why it is a single layer.
This last epithelium is also found in the airways in large numbers.
Part 1: Read each question carefully and choose the correct answer.
1. Which statement regarding the peer review process is not correct?
The system of peer review is used to _____.
a. select the research deemed worthy of consideration by others in the field
b. give the authors feedback on the validity of methodologies and reasonableness of conclusions
c. improve the quality of the paper before it is published
d. determine conclusively the conclusions of the paper
2. Compare and contrast the three basic types of experiments. Provide an example of each one to support your statements.
Part 2: Read the passage carefully and then answer the following question.
Researchers at a major university are testing a new drug to lower cholesterol, called Choless. They started the study by testing mice. Once they received the proper FDA clearances, they began trials on humans. They began testing on males, whose ages ranged between 30 and 60 years old. The researchers split the participants into two groups. Group A was given Choless, while Group B was given placebos. A placebo is completely harmless and looks exactly like Choless, but it contains no active medicine. None of the participants knew whether they were taking Choless or the placebo. The participants were to eat a diet low in saturated fats, and high in protein and fiber. Each participant's cholesterol levels were tested and recorded every week.
Based on the passage above, determine each part of the experiment:
subject:
control:
constant:
independent variable:
dependent variable:
Part 3: Identify the independent, dependent, and constant variables for different experiments.
Note: You may have identified constant variables not mentioned in the experiment scenario. So long as these variables are reasonable (such as same weather conditions, same ambient temperature, etc.), they should be accepted as correct.
Experiment 1: A soap manufacturer runs an experiment to compare the foaming action of different dish detergents. Equal amounts of each brand of detergent are placed in identical containers half-filled with water. The water and dish detergent are at a temperature of 20°Celsius. Each container is agitated for 30 seconds, and then the height of the foam is measured.
a. independent variable:
b. dependent variable:
c. constant variable(s):
Experiment 2: A car manufacturer wants to determine the effect of weight on gas mileage for a particular model of car. The gas tanks of ten identical cars are filled with the same type of gas. Each car has a different amount of weight in its trunk. Each car is driven at the same pace around a level track for 200 miles. The amount of gasoline left in each tank is measured.
a. independent variable:
b. dependent variable:
c. constant variable(s):
Experiment 3: A biologist tests different lighting conditions for bacteria. She uses the same number of the same strain of bacteria on each petri dish, with the same type and amount of growing medium on each. Each petri dish is subjected to a different amount of light for a 24-hour period. After this time, the biologist counts the number of bacteria on each petri dish.
a. independent variable:
b. dependent variable:
c. constant variable(s):
Experiment 4: An oceanographer wishes to study the effect of salinity on the growth of a certain type of aquatic plant. Imagine an experiment the oceanographer can conduct and identify the possible variables.
a. independent variable:
b. dependent variable:
c. constant variable(s):
Answer:
1. d
Explanation:
The correct answer would be that the system of peer review is used to determine conclusively the conclusions of the paper.
The system of peer review refers to the process of evaluating a scientific report or paper by one or more independent scientists who have a similar background as the producer of the report or paper.
The reviewers evaluate the methodologies and various claims made by the original researcher and give feedback on their validity as well as make criticism of the paper in order to improve its quality before final publication. However, reviewers do not alter the claims or conclusions of papers, they can only query them.
Hence, options a, b, and c are correct as far as the peer review system is concerned.
The only incorrect option here is d.
2. There are 3 types of experiments, namely:
controlled experimentfield experimentnatural experimentThe controlled experiment involves the comparison of experimental group with control group. The two groups are subjected to the same conditions except for the variable whose effects are being researched.
The field experiment takes place outside the laboratory settings as opposed to other types of experiments. The subjects of the field experiment are studied in their natural environment outside the lab.
The natural experiment involves studying a phenomenon naturally without having control, unlike the controlled experiment. Observations are just recorded and are used to arrive at predictions or hypotheses.
Part 2:
Subject: 30 - 60 years old males
Control: Group B, the placebo group
Constant: Diet.
Independent variable: Administered drugs (choless and placebo)
Dependent variable: cholesterol level.
Part 3
Experiment 1:
a. Independent variable: types of detergent
b. dependent variable: height of foam
c. constant variables: amount of water, container type, temperature, period of agitation.
Experiment 2:
a. independent variable: amount of weight in each car
b. dependent variable: amount of gasoline left in each car
c. constant variable: car, type of gas, speed of car, distance covered by car.
Experiment 3
a. independent variable: amount of light
b. dependent variable: number of remnant bacterial cells after exposure to light
c. constant variable: initial number of bacteria, petri dish, type/amount of growth medium.
Experiment 4
a. independent variable: level of salinity
b. dependent variable: biomass of plant
c. constant variable: type of plant, period of growth, growth conditions.
Describe the scientific process's importance.
Answer:
identification of problem
formulation of hypothesis
procedures of carrying out experiment
carry out experiment
analysis of experiment of data
observation of the experiment
conclusions and documentation
when two true breeding pea plants that show contrasting traits are crossed 1) mention the pod shape in F1 generation 2)work out the cross upto F2 generation 3) compute the relative fraction of various genotypes in the F2 generation
Answer:
1.) Inflated pod shapes (Cc) in the F1 generation
2) See attached image for the work out of the cross from P generation to F2 generation.
3). CC- 1/4, Cc- 1/2, cc- 1/4
Explanation:
This question is related to the pod shape trait encoded by a single gene in pea plants. The alleles for inflated pod shape (C) is dominant over the allele for constricted pod shape (c). This means that allele "C" will be expressed over allele "c" in a heterozygous state.
The two truebreeding parent plants will have genotypes: CC (inflated pod shape) and cc (constricted pod shape). When these two plants are crossed, an all heterozygous plant with genotype: Cc will be formed in the F1 generation. Since, C is dominant over c, the F1 Cc plants will have an inflated pod shape phenotype.
The F1 Cc plants are self-crossed to produce the F2 generation offsprings i.e. Cc × Cc. The gametes C and c will be produced by each F1 parent, which will be used to draw a punnet square (see attached image). From the cross, offsprings with genotypes: CC, Cc and cc are produced in the F2 generation.
CC (phenotypically inflated pod shape)- 1/4
Cc (phenotypically inflated pod shape)- 1/2 or 2/4
cc (phenotypically constricted pod shape)- 1/4
what is the optimal ph that this enzyme functions at
Answer:
optimum temperature
Explanation:
What is a contributor of global warming? A. aerosol sprays B. carbon dioxide C. acid rain D. garbage
1
f(x) =
and g(x) = x - 2
x+5
What are the restrictions of the domain of f(g(x)) ?
Answer: x ≠ -3
Explanation:
the right answer that showed up.
Answer:
its 6
Explanation:
What are the restrictions on the domain of g ∘ f? x ≥ ?<<<<<< that was the question if anyone was confused.