Answers
Answer:
D. Lab 4
Explanation:
Measurements in scientific experiments require the collection of data. The precision of a measurement refers to how close a measurement value is to one another.
N.B: The accuracy of a measurement is different from the precision. Accuracy is how close the measured values are to the true value.
To calculate the precision of measured values in different labs for a weighed metal, we use the range of values i.e. the difference between the highest value and lowest value for each lab.
Lab 1: 17.99 g, 18.15 g, 18.23 g
Range= 18.23 - 17.99 = 0.24
Precision result (mean±range)= 18.12±0.24
Lab 2: 18.1 g, 18.2 g, 18.3 g
Range= 18.3 - 18.1 = 0.2
Precision result: 18.2±0.2
Lab 3: 18.11 g, 18.13 g, 18.97 g
Range= 18.97 - 18.11 = 0.86
Precision result: 18.40±0.86
Lab 4: 18.93 g, 18.95 g, 19.03 g
Range= 19.03 - 18.93 = 0.1
Precision result: 18.97±0.1
Based on the range of values in the precision results from each lab, it is evident that Lab 4 has the most precise measurements because the repeated values didn't vary much from one another compared to values from other labs.
Related Questions
Which statement about atmospheric pressure near Earth's surface is true?
OA.
It increases as you move away from Earth's surface.
O B.
It decreases as you move away from Earth's surface.
O c.
It is constant throughout Earth's atmosphere.
D.
It is measured using a thermometer.
Answers
Answer:
B. It decreases as you move away from Earth's surface.
Explanation:
The atmospheric pressure is maximum at the surface of the Earth and it decreases with the increase in the elevation. In the mountains regains and on the cliff of the mountains, the atmospheric pressure is less as compared to the ground level. This happens because the density of the cool air is greater than the warm air. The decrease in pressure causes mountain sickness and many other problems to people when the elevation increases.
Small molecules are combined to form larger ones which can eventually form a
Answers
Answer:
POLYMER
Explanation:
Small molecules called monomers combine together in a process called polymerization to form a larger molecule called POLYMER. A polymer is a large molecule consisting of long chains of small molecules (monomers) chemically bonded together.
The process of polymerization often involves the loss of water molecule. These polymers (macromolecules) are important for the optimal functioning of living systems, or the production of important substances.
Which of the following options is correct?
It was important that Mendel examined not just the F1 generation in his breeding experiments, but the F2 generation as well, because
a) he obtained very few F1 progeny, making statistical analysis difficult.
b) parental traits that were not observed in the F1 reappeared in the F2.
c) analysis of the F1 progeny would have allowed him to discover the law of segregation, but not the law of independent assortment.
d) the dominant phenotypes were visible in the F2 generation, but not in the F1
Answers
Answer:
b
Explanation:
It was important that Mendel did not limit his study to just the F1 generation because parental traits that were not observed in the F1 reappeared in the F2.
For example, in across involving a true-breeding yellow seedcoat pea plant and a true-breeding green seedcoat pea plant, all the F1 offspring would be yellow provided that the yellow seedcoat is dominant over the green seedcoat. The green seedcoat trait will only reappear in F2 offspring.
If the breeding experiment is limited to just the F1 generation, of course, the parental green seedcoat trait will not surface at all.
The correct option is b.
Ischemic death of tissue in visceral organs such as the heart typically produces:________
a. coagulative necrosis
b. liquefactive necrosis
c. caseous necrosis
d. fat necrosis
Answers
Answer:
A; Coagulative necrosis
Explanation:
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.
Answers
The answer is the cell membrane invaginates and pinches off creating a vesicle within the cell.
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
Answers
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
Answers
Answer:
optimum temperature
Explanation:
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?
Answers
Answer:
hi sir this channel and subscribe and rainfall the plant is a push and rainfall the forests and the nucleus is a
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?
Answers
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!
Create a scientific question that could be answered with the help of a microscope
Answers
Answer:
"Find the difference on the basis of the shape of animal and plant cell?" is a scientific question that can be answer with the help of microscope.
Explanation:
Microscope is an instrument that helps in study the very small structures by magnifying its size with the help of different magnifying lenses of different magnifying power.
Microscope bends the light towards the eyes through the lenses which make them look larger than the actual size of the object. Microscope can help an individual to see minute details that eyes can not see normally.
Shape of the cell of various organism like plant and animals can be study with the help of microscope and can be find the differences.
Thus, "Find the difference on the basis of the shape of animal and plant cell?" is a scientific question that can be answer with the help of microscope.
Question 1
10 pts
Observe the terrestrial food web below. Based on the way this food web is structured, list the producer(s) in this food
web. What is your evidence?
Answers
Give an example of each level of organization found in a flowering plant.
Answers
Each level of organization found in a flowering plant is:-
Cellular level:- MegasporesTissue level:- ParenchymaOrgan level:- Filament ( stalk of anther)Organism level:- The plantWhat do you mean by level of organism?
Levels of organization are structure in nature, usually defined by part -whole relationships, with things at higher levels being composed of things at the next lower level
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Place the following liquids in order from lowest to highest point (bottom to top) in a density column based on the following data:
Liquid A: d= 1.0 g/mL
Liquid B: d= 1.2 g/mL
Liquid C: m= 6.2g; v= 7.0ml
Answers
Answer:
1)Liquid C.
2)Liquid A.
3)Liquid B.
Answer: B,A,C
Explanation:Hope this helps
I need help !!
The functional units of kidneys where blood is filtered and urine produced are called
A.Pyramids
B.Nephrons
C.Calyces
D.lobules
E.Lobes
Answers
Answer:
B.Nephrons
HOPE IT HELPS!
PLS MARK AS BRAINLIEST!!!
During the agricultural revolution ?
Answers
____________________ are structures inside cells that perform specific functions and are often enclosed in membranes; these can be seen with an electron microscope. Your answer:
Answers
Answer:
Organelles
Explanation:
Living cells of organisms contain structures within them that perform specific functions for the cell. These structures are called ORGANELLES. Organelles are organ-like structures that are specific about their function in a cell.
Both the cells of prokaryotes and eukaryotes possess organelles, however, the organelles in eukaryotes are bounded by a membrane e.g mitochondrion, chloroplast etc. while those of prokaryotic cells are not bounded by a membrane.
The organelles inside a cell can be seen with the aid of an electron microscope. Examples of organelles are chloroplast (functions in photosynthesis), mitochondria (functions in production and storage of cellular energy), ribosome (functions in protein synthesis) etc.
Describe the scientific process's importance.
Answers
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
5. A suggested and testable explanation for an event is called a
1. hypothesis
2. variable
3. theory
4. control
Answers
Answer:
1.hypothesis.
hope it helps!
A suggested and testable explanation for an event is called a hypothesis. Therefore, option (A) is correct.
What is a hypothesis?A hypothesis is a proposed explanation for a phenomenon that can be tested through scientific investigation. It is an educated guess or tentative answer to a scientific question based on prior knowledge and research. A hypothesis should be specific, testable, and falsifiable, meaning that it can be proven wrong through experimentation.
Hypotheses are often used in scientific experiments to guide the research and determine the outcome. A hypothesis can be based on observations, theories, or previous research, and it should be clearly stated in a way that allows it to be tested and either supported or rejected by the evidence. The process of testing a hypothesis involves designing and conducting experiments, collecting and analyzing data, and drawing conclusions based on the results. The ultimate goal of a hypothesis is to gain a deeper understanding of the natural world through the scientific method.
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"If a scientist isolates genes for Hepatitus B antigens from a Hepatitus virus, then inserts them into a bacterial plasmid and replicates the bacteria in a fermenter, what product will be collected?"
Answers
Answer:
You could get a bacteriophage as a product.
Explanation:
Bacteriophages are viruses housed within bacteria, which take over the bacterial replication mechanism to multiply and replicate in a dependent manner.
The combination of the hepatitis b virus with a bacterium would end up forming a much more potent bacteriophage with higher virulence factors than the virus or the bacterium itself.
please help marking as brainliest image is shown down below with questions. Answer is only needed without explaination.......
Answers
Answer:
BrainlySakeen have already wrote it.What is an advantage and a disadvantage of using 4.5-7.5 paper for PH analysis?
Answers
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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If a friend needed help creating a personal study strategy and had never thought about it before, (1 point) which of the following would be a good place to start? O Look over a list of common study habits, and see whether he or she currently practices them or not. O Tell him or her your study method so that he or she can adopt the same one. O Go to the beginning of the textbook, and reread it word for word. O Find a group of people to study with, since group studying is the only way to study well.
Answers
Answer:
common study habits
Explanation:
An area where you can concentrate and won't be distracted by loud noises or individuals who continually want your attention is one that is calm and has few distractions. Thus, option A is correct.
What are the good place to start common study habits?The neighborhood library is an excellent spot to conduct some studying. The nicest part is that there are no interruptions. It is quiet, has sufficient of table space, comfortable benches or chairs, and even couches in certain libraries!
An empty classroom can make a great study space. When classes are not in session, several universities permit students to utilize the classrooms for studying.
A calm area in your home, a school or public library, a coffee shop, or any of these can be suitable starting points.
Therefore, If you can locate a classroom that is open while you are in school during the day, it would make a great place to study. Coffee house.
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Convert 11.75 millimeters to meters. ____ meters
Answers
Answer:
0.01175
Explanation:
To convert millimeters to meters, we must divide the number of millimeters by 1000 because for one meter, there is one thousand millimeters
So, 11.75/1000= 0.01175
Answer:
0.01175
Explanation
Suppose a gene from a cow is introduced into a frog. This results in a ________ transgene.
Answers
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.
1-5 fill in the blanks
Answers
2. Anatomical terminology
3. cartilage
4. pleura ( visceral pleura & parietal pleura)
5. four overlapping processes; maintenance of homoeostasis, an inflammatory response, a proliferative phase, and remodeling
Not too sure about 2 and 5 but here ya go
Answer:
1 nervous tissue
2 stomach
3 cartilage
4 pleura membrane
5 granulation process
Explanation:
u can google the terms that I provided
What is the responsibility of a scientist
Answers
It requires scientists to conduct and communicate scientific work for the benefit of society, with excellence, integrity, respect, fairness, trustworthiness, clarity, and transparent
What happens to an enzyme after it has completed a reaction?
A. The enzyme is folded.
B. The enzyme is reused.
C. The enzyme is denatured.
D. The enzyme is destroyed.
Answers
Answer:
i think it is a
Explanation:
I am smart
When the enzyme is used in the reaction it is bound to the substrate and releases product and the enzyme is unchanged, hence option b is correct.
What is the enzymatic reaction?An enzyme can be employed for other reactions after it has catalyzed a reaction and been freed from its binding to a substrate.
There is no change at all in the enzyme that has now been liberated and is prepared to catalyze the transformation of another molecule of the substrate into a product.
As a catalyst, it is crucial to keep in mind that the enzyme is not permanently changed by the reaction instead when the reaction is over, the enzyme returns to the condition it was in before the reaction started.
Therefore after a reaction enzyme can reuse for another reaction, hence option b is correct.
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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.
Answers
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.
What is the responsiblity of individual in creating safe environment?
Answers
Answer:
The most important responsibility of an individual is to conserve energy and prevent them from being unnecessarily wasted......
Explanation:
Match the level of ecological organization
described by each of the statements below.
Only the areas that life inhabit, from the upper
crust of the Earth through the lower atmosphere.
A. Biological community
B. Biosphere
C. Ecosystem
D. Earth
Answers
Answer:
I think it is c
Explanation:
I'm not sure