Answer:
Purpose: A brief description of why the experiment is being performed. Include details about the experiment, such as the methods used, a specific chemical reaction(s), and/or anticipated product.
Hypothesis: Provide a statement or two about the anticipated outcome of the experiment.
Experimental Procedure: A step-by-step description of the experiment including the chemicals, equipment, and/or methods used. Complete sentences must be used for the description. DO NOT simply copy the procedure from a lab manual or a handout. Condense the given procedure into steps so that you can understand and follow them.
Laboratory Safety: Give a complete, descriptive listing of the safety precautions, hazards, or other safety procedures that are needed for this experiment.
Experimental Data: Record all data resulting from the experiment in your laboratory notebook. The experimental data should be recorded in tabular form. Do not record your experimental data in your laboratory manual.
Observations: This section is used to record any qualitative observations and notes on the changes to the experimental procedure. Sudden bursts of scientific insight or other information during the experiment that may aid in the interpretation of the data generated are to be entered in this section. No points will be awarded when the observations are recorded outside of the laboratory. It is also important that you record your unknown number in this section of your notebook.
Calculations: Present outcome/summary of data analysis using tables, Excel graphs, and/or figures. List separately all pertinent mathematical equations followed by a sample calculation for each. Use the recorded data from the experiment when performing the calculations.
Results/Discussion: Questions that should be addressed in this section may include: Did the experiment work, and if not, why not? Were the results obtained in the experiment those expected based on the laboratory procedure? If the experiment was to be repeated, what improvements would be made? What types of errors occurred and how could they be corrected? How did the observations play a role in the outcome of the experiment? When applicable, you should compare your experimental value(s) to that of a published, literature value(s), commenting on the accuracy of your technique.
Conclusion: Summarize the findings of the experiment, which must include the final results of the experiment, e.g., the percent yield of a reaction, the identity of an unknown, etc. Look back at the purpose and hypothesis of your experiment and assess whether or not you met your goal in performing the experiment.
References: Include all pertinent information such as, your laboratory manual, textbooks, web sites, and any other library resources used in the preparation of your laboratory report.
PLWASS HURRY!!! Your teacher gives you a task in science class. You must decide which of the five samples you are given are alive or were once alive.
One specimen is a crusty gray-green object. What is the BEST clue you could use to decide: living thing or not a living thing?
A)
Does it move?
B)
Does it have DNA?
Is it made of cells?
D)
Can it make its own food?
Answer:
dose it move
Explanation:
Pandas evolved longer wrists to better eat bamboo over a long period of time and this in turn increase
their possibility of survival. This is an example of:
a. Artificial Selection
b. Adaptation
c. Biodiversity
d. Homeostasis
Answer:
B adaption
Explanation:
The scenario in which the Pandas evolve longer wrists to better eat bamboo over a long period will increase the possibility of artificial selection. The correct option is A.
What is artificial selection?Artificial selection, also renowned as "selective breeding," is the practice of selecting for positive traits in agricultural products or animals rather than allowing the species to change and evolve naturally, as in natural selection.
The process by which organisms can choose individual lifeforms with specific phenotypic trait values for breeding is known as artificial selection. If the selected trait has additive genetic variance, it will respond to selection, i.e., the trait will evolve.
Adaptation entails dealing with both the physiological abiotic environment such as light, dark, temperature, etc. but in addition to the intricate biotic environment.
Pandas evolved longer wrists to better eat bamboo over a long period of time and this in turn increase their possibility of survival. This is an example of artificial selection.
Thus, the correct option is A.
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DNA is made of two chains of nucleotides. Which type of bonds hold the chains together?
O hydrogen bonds
O covalent bonds
• ionic bonds
O polar covalent bonds
Answer:
O hydrogen bonds
ionic bonds
Explanation:
DNA is composed of two strands of nucleotides that are held together by hydrogen bonds. Hydrogen bonds are relatively weak bonds that form when a hydrogen atom is shared between two electronegative atoms, such as oxygen or nitrogen.
How hydrogen atoms are shared?Due to the unequal distribution of the hydrogen atom between the two atoms, one of them develops a partial positive charge, while the other develops a partial negative charge. The resultant hydrogen bond between the two atoms acts as an attracting force.
Proteins and nucleic acids, including DNA, have secondary and tertiary structures thanks to hydrogen bonding. Between the two strands' nitrogenous bases in DNA, hydrogen bonds develop.
Each base, including guanine, adenine, thymine, and cytosine, has a distinct structure that enables hydrogen bonds to form with the corresponding base. For instance, adenine and thymine form two hydrogen bonds, whereas cytosine and guanine form three hydrogen bonds.
These hydrogen bonds hold the two strands of DNA together, allowing them to form the double helix structure. Without hydrogen bonds, the strands of DNA would not be able to stay together, and the genetic information contained in DNA could not be passed on.
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Сотраге and contrast Simple Dominance to Incomplete Dominance."
Answer:
Simple dominance is when the dominant gene in a heterozygous organism expresses the dominant phenotype. Incomplete dominance is when a heterozygous organism exhibits a blending of both genes, recessive and dominant. Red and white flowers will "blend" and make pink flowers.
Incomplete dominance, only one allele in the genotype is seen in the phenotype. In simple dominance, both alleles in the genotype are seen in the phenotype. In incomplete dominance, a mixture of the alleles in the genotype is seen in the phenotype.
A sperm cell belonging to a red fox contains 16 chromosomes. How many chromosomes would be in the red fox's brain cell?
Answer:
the red fox has 38 chromosomes,
Explanation:
HELP! what is the alignment of the earth,moon and sun during a solar eclipse?
Answer:
they are all lined up.
Explanation:
the moon blocks the sun which is in front of the earth
Answer: i hope this is what you were asking, the moon, earth, and sun line up on a striaght line with the moon blocking the sun
All of the following are complications that can result from an individual suffering from an eating disorder except
A heart disease
B. dieting regularly
C. kidney damage
D. death
Answer:
The answer is B
Explanation:
Hope this helps
Answer:
B. dieting regulraly
Explanation: correct on edge 2021
just got it right ; )
To help your investigation, here is some more data about the farm.
The chicken population was started with chicks from a different farm.
Chickens are raised in barns where bacteria can spread easily between chickens.
CJ, E. Coli, and Salmonella bacteria are all present in the barns.
Some of the E. Coli and Salmonella bacteria have alleles that make them resistant to the FQ antibiotic.
To stop disease from growing in the barn, the FQ antibiotic is fed to the chickens a lot.
Choose which way of evolution caused the FQ antibiotic resistance.
Gene Flow
Genetic Drift
Natural Selection
What is the best fit option here? Form a hyptothesis
This is my hypothesis, is it right ?
If the chicken population is consistently given the FQ antibiotic, then natural selection leads to antibiotic resistance, because some chickens could have some of the bacterias that develop mutations allele and they can resist against FQ antibiotics.Bacteria which are resistant will continue to increases and grows in number over time. In the end, the chicken population are mainly resistant bacterial, thus making this the likely mechanism of evolution.
Answer:
1) Natural selection
2) Hypothesis: The excessive use of FQ antibiotics on chickens leads to the fixation of new genes -by natural selection- that result from mutations in the bacterial genetic material, which makes these cells become even more resistant to the drug.
Explanation:
1) Natural selection selects beneficial alleles and increases their frequency in the population.
Natural selection results in adaptation, which means the increase of the aptitude phenotype. Aptitude is the contribution of each genotype to the next generation.
In many cases adaptations, resulting from natural selection can be correlated to environmental factors or selective pressures applied by other organisms or habitat.
Let us remember that, a mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
So, in the exposed chickens´ example, we are focussing on bacteria populations.
The selective pressure or modeling environmental factor is the FQ antibiotic. The bacteria´s response to antibiotics is the survival of only those that carry mutations. Natural selection benefits these mutations. Bacteria survive and become more resistant2) Hypothesis.
First, remember that the hypothesis is a conjecture. The researcher hypothesizes in order to predict what is going on or what is expected to occur. A hypothesis is a claim of how it works a relation between two or more variables. Usually, it is written in the present time.
So in this example, we want to correlate the use of antibiotics with bacteria resistance.
I would hypothezise as following,
The excessive use of FQ antibiotics on chickens leads to the fixation of new genes -by natural selection- that result from mutations in the bacterial genetic material, which makes these cells become even more resistant to the drug.
This hypothesis probably states the same as yours but turns to be more concise. The hypothesis needs to go to the point. If you want to be more specific, you can probably add some specific hypotheses to dig into your work.
We have that the,Natural selection caused the FQ antibiotic resistance.
Natural selectionGenerally , Natural resolution causes a reaction that leads to antibiotic resistance, Mutation in micro organism make them resistant to antibiotics and when they reproduce similarly ,they will pass by this resistant trait to their offspring, which will outcomes into a completely resistant generation.
In the give up ,result is a populace of in most cases resistant bacteria.
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What is the process of mountain building called?
Answer:
Orogeny is the process of mountain building, and may be studied as a tectonic structural event, as a geographical event and a chronological event, in that orogenic events cause distinctive structural phenomena and related tectonic activity, affect certain regions of rocks and crust and happen within a time frame.
Explanation:
hope this helps if it does can i get brainlist
PLEASE HELP !!
ILL GIVE BRAINLIEST
NO LINKS OR FILES.
Answer:
I would say c because, sure the polar bears can swim and other things there will be very little ice once the ecosystem melts.
Explanation:
common sence
The drawing below was sketched by a student who was observing cells under a microscope.
In what kingdom does the above cell likely belong?
A. Plantae
B. Animalia
C. Fungi
D. Bacteria
Answer:I believe it’s A
Explanation:because of the cell wall
Assume that you discover a new human gene that you believe is located on the Y chromosome although not in the region (pseudoautosomal) of the Y that is homologous with part of the X chromosome. How would you map this gene with respect to the other genes on the Y chromosome
Answer:
by performing a bioinformatic analysis in order to discover Y chromosome-linked mutations associated with defective phenotypes. In this case, it is expected to discover two or more loss of function mutations located in the coding region of the target gene on the Y chromosome in different males, and then associate such mutations with altered phenotypes caused by the inactivation (loss of function) of this gene
Explanation:
The genes located on the Y chromosome exhibit a uniparental mode of inheritance (i.e., these genes are only transmitted from father to their sons). This situation makes difficult to map the target gene since recombination does not occur for genes that are only located on the Y chromosome, hampering the development of a linkage map containing this gene. In this case, it is possible to directly associate genetic mutations located at the same genomic region (locus) on the Y chromosome with a particular altered phenotype in males carrying these mutations, which can be in principle associated with the inactivation of the target gene (loss of function mutations) in these individuals.
The key to identifying a Combustion reaction is
Answer:
Good signs that you're dealing with a combustion reaction include the presence of oxygen as a reactant and carbon dioxide, water, and heat as products. Inorganic combustion reactions might not form all of those products but remain recognizable by the reaction of oxygen.
The ability to taste PTC comes from the presence of a dominant allele (T). A population of 20 individuals was surveyed to determine whether or not they could taste PTC. Sixteen out of the twenty surveyed could taste PTC. Four could not taste PTC. Assume that Hardy-Weinberg Equilibrium conditions are met in the population. Round all answers properly to 2 decimal digits. Rounding rules: When rounding to 2 decimal digits, look at the third decimal digit. If the third digit is 5 or greater, round up. If the third digit is less than 5, round down.
What is the frequency of the non-taster allele (t) in this population?
What is the frequency of the taster allele (T) in this population?
What is the frequency of the TT genotype? Answer What is the frequency of the Tt genotype?
What is the frequency of the tt genotype? Answer How many people in this population are expected to be heterozygous for this locus? Round to the closest whole number.
Answer:
1) What is the frequency of the non-taster allele (t) in this population?
f (t) = q = 0.45
2) What is the frequency of the taster allele (T) in this population?
f (T) = p = 0.55
3) What is the frequency of the TT genotype?
F (TT) = p² = 0.3
4) What is the frequency of the Tt genotype?
F (Tt) = 2pq = 0.5
5) What is the frequency of the tt genotype?
F (tt) = q² = 0.2
6) How many people in this population are expected to be heterozygous for this locus?
Tt = 10 individuals
Explanation:
Due to technical problems, you will find the complete explanation in the attached files
1) What is the frequency of the non-taster allele (t) in this population?
t = q = 0.45
2) What is the frequency of the taster allele (T) in this population?
T= p = 0.55
3) What is the frequency of the TT genotype?
TT = p² = 0.3
4) What is the frequency of the Tt genotype?
Tt= 2pq = 0.5
5) What is the frequency of the tt genotype?
tt = q² = 0.2
6) How many people in this population are expected to be heterozygous for this locus?
Tt = 10 individuals
What is a genotype?
A genotype is someone's collection of genes. The word also can guide the two alleles inherited for a respective gene.
The genotype is defined when the information encoded in the genes' DNA is used to make protein and RNA molecules.
Thus, all questions related to Hardy-Weinberg Equilibrium.
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Convert the DNA strand to mRna, then use the codon chart to translate the codons into amino acids.
DNA → TAC CAT GGA ATT ACT
mRNA →
Amino acids →
I NEED HELP PLEASE
Answer:
DNA → TAC CAT GGA ATT ACT
mRNA: AUG GUA CCU UAA UGA
Amino acids: met-val-pro-stop
Explanation:
I’ll mark as brainliest
Answer:
Mitosis
Explanation:
Answer: b
Explanation:
There are multiple lines of evidence that provide support for common ancestry and evolution. Write 3-4 paragraphs describing at least three of them in detail. Provide at least one example for each line of evidence.
(I need the full three to four paragraphs ASAP please please please)
Answer: Determining a substance's physical or chemical identity. What are the two main requirements for identification? The adoption of testing procedures that give characteristic results for specific standard materials and the number and type of tests needed to identify a substance to exclude all other substances.
100 POINTS! AND GIVE EXPLANATION!
a student made this model of carbon dioxide moleclue. it has one carbon atom and two oxygen atoms what is the correct way to write carbon dioxide the chemical name for
A: C2O
B: C²O
C: CO2
D: CO²
Answer:
CO₂
Explanation:
In chemistry we use subscripts after the element represented by that amount.
Answer:
C: CO2
Explanation:
Carbon has four valence electrons. Oxygen needs two valence electrons to become stable. A carbon dioxide molecule is a combination of one carbon atom and two oxygen atoms, CO2. Because carbon dioxide includes two different elements, it is a compound as well as a molecule.
Hope this helped!!!
NEED ANSWER ASAP (95 points)
1.Give an example of one type of mutation, Give a Definition of it, and explain what is might do.
2.Give an example of how the environment can effect an organsism's genetics?
3.If a mutation happens in a somatic cell, will it be passed on to the next generation? Why or why not?
4.Explain the difference between a GENE and an ALLELE
5.What is the advantage of CROSSING OVER in Meiosis?
6.If the FREQUENCY of a trait is INCREASING in a population of animals......what might that mean?
7.Explain very briefly what causes Trisomy 21
8.Imagine a population of animals is separated by a natural event....and half of them a forced into a valley, and the other half are forced into the mountains. Imagine both populations survive. What type of changes might you notice a million years later between the 2 populations? Why is this?
9.What are 3 things you know about Genetic Variation now that you didn't know before this Unit?
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.8. Both will collapse and collide together.
1. Mutation in the human cells. When our bodies are cold the coldness responds back to our body by bringing air into it.2 It can either increase me lan in or decrease it.3. Yes every generation is different.4.An allee is A cell in our bodies which function blood cells. A gene is A trait from either a relative.5. Meiosis Gives us more oxygen to breath in our Booties ☺ and our main body Functions.6. Then that trait would most likely be passed on to the offspring/ Children.7. the most common form of Down syndrome, caused by an extra copy of chromosome number 21.8. Both will collapse and collide together.9. Genetic Variation The process of a Trait getting passed down in various ways.
Explanation:
God Bless You!☺Siblings will have the same nuclear DNA, but different mtDNA.
True
False
Answer:true
Explanation:
2. Geothermal energy is possible where there is
*
O A wind.
O Boil.
O C coal
O O magma.
Answer:
Explanation:
Option D magma is the correct answer
1. Explain where most of your food originally came from and how your cells obtain and use that food.
Answer:
the food that we eat are used up by the cells to perform different activities such as metabolism.
which term best describes the role of a tick living on another animal?
Answer:
a) parasite
Explanation:
hopefully this helps
Answer:
A
Explanation:
Parasite, Because a tik living on another animal would be a "vampire" organism otherwise known as a parasite.
In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms.
a. True
b. False
Answer:
Explanation:
True.
In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms is a true statement.
What are Bacterial communities?Bacterial communities differ in their species makeup, the niches they occupy, and the effects they have on various ecosystems.
Communities defy a single, fundamental definition due to their complexity. Instead, they offer fascinating illustrations of dynamic processes that vary with ecological size. In the beginning of microbiology, there were difficulties in describing and classifying communities.
Robert Koch revolutionized the study of microbiology in the late 1800s by inventing his techniques for proving the link between an infection and an organism (Koch, 1876). Koch's hypotheses continue to be the "gold standard" for linking germs to illness or any other interesting event.
Therefore, In bacterial communities, where resources are often limited, survival requires the ability to sense, respond to, and cooperate or compete with neighboring organisms is a true statement.
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During his first set of experiments, Mendel crossed true-breeding plants that
expressed different versions of a studied trait. For example, he crossed tall
plants with short plants. Based on his results, he said the tall plants exhibited
the dominant form of the trait, plant height. Which of the following best
describes the F1 offspring of this cross?
O A. All were tall.
O B. About 25% were short.
C. All were short.
D. About 25% were tall.
Answer: A. All were tall.
Explanation:
True-breeding plants are plants with completely dominant or recessive genotypes (TT (tall) and tt (short), for this example). He crossed one tall plant with genotype TT with a short plant with genotype tt. Set up a Punnett square with parents TT and tt.
All offspring will have the genotype Tt. T is dominant, so only one copy of it is needed for a plant to be tall. All of the offspring have one copy of T, so they're all tall.
Answer:d
Explanation:
it is right
Thermococcus and thermoplasma what do they have in common?
Explanation:
Both Thermococcus and Thermoplasma are unicellular organisms that can live in extreme environments. Based on the concept of domains, what do they have in common? They both belong to domain Archaea. ... They both belong to domain Eukarya.
Part D
Do you think one of your solutions is clearly better than the other? Give reasons for your answer.
Answer:
No, I don’t. They both have significant pros and cons, and there’s not a lot of scientific evidence available to determine whether one solution is better than the other.
Explanation:
Edmentum
What is happening to the number of the cells through each phase from zygote to morula to blastocyte?
Answer:
They are being divided by 2
Explanation:
If mitosis goes well, the zygote will continue to grow until it reaches the next phase of prenatal development. The period of the zygote is quite brief, lasting for about four days. Around the fifth day, the mass of cells becomes known as a blastocyst.
4.
Humans contain 23 pairs of chromosomes in their body cells. After mitosis, it is expected that the daughter cells would each have a total of chromosomes _____. In sex cells undergoing meiosis I, it is expected that the two daughter cells would contain _____ chromosomes,and after meiosis II, ______ chromosomes.
A. 23, 23, 23
B. 46, 12, 12
C. 46, 23, 23
D. 46, 46, 46
Answer:
B.46, 12, 12
Explanation:
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If HH crossed with Hh. What would be the probability of hh?
Answer:
The probability would be 0%