Answer:
when she or she is the last hope of the surveillance or the intelligence
Answer:
B. under the guidance of a legal investigation
Explanation:
The science department hypothesized that giving their students snacks would improve their performance in class. Upon reviewing the scores, they noticed that some students who usually have higher scores actually made lower scores on the weekly assessment. At this point, what should the teachers do?
A. Develop a new experiment
B. Analyze the data again
C. Revise their hypothesis
D. Conduct the experiment again
Crossing over shuffles alleles on:_____.a. sister chromatids.b. different non-homologous chromosomes.c. chromosomes within different cells.d. different homologous chromosomes.d. none of the answers are correct.
Answer:
d
Explanation:
Crossing over shuffles alleles on non-sister chromatids of homologous chromosomes.
At the prophase I stage of meiosis, homologous chromosomes synapsed to form a four-chromatid structure known as tetrad. Exchange of chromosomal segments between non-sister chromatids of the tetrad then takes place, a process that results in the reshuffling of genes or alleles on the non-sister chromatids.
Hence, none of the answers is correct.
Correct option: d
what is one reason that scientists who study weather need extremely advanced technology
1. to anticipate changes in weather patterns
2. to remove the need to make forecasts several days in advance
3. to monitor weather events restricted to one region
4. to account for one factor at a time that affect weather patterns
choose one
Answer:
To anticipate changed in weather patterns
Explanation:
1. I took the test
2. Scientist who study weather need to have a high quality standard technology in order for them to forecast weather accurately and also to forecast weather several days in advance.
Impulse is just a change in?
Answer plss
Answer:
due to the rate of blood circulation
Answer:
is a quantity that describes the effect of a net force acting on an object (a kind of "moving force").
is represented by the symbol J (boldface).
is the product of the average net force acting on an object and its duration.
J = F∆t
is the force-time integral.
J = ⌠
⌡ F dt
is a vector quantity (since force is a vector and time is a scalar).
Impulse-Momentum Theorem
The impulse-momentum theorem states that the change in momentum of an object equals the impulse applied to it.
J = ∆p
If mass is constant, then…
F∆t = m∆v
If mass is changing, then…
F dt = m dv + v dm
The impulse-momentum theorem is logically equivalent to Newton's second law of motion (the force
A student does an experiment for a science fair to study whether temperature affects the timing of a cricket’s chirps. The student keeps a cricket in an enclosed box that is heated to different temperatures each day for twelve days. The student records the cricket’s chirps by using a sound-activated microphone so that the timing of the chirps can be measured. The student records the results of the experiment in the table below.
Answer:The timing of the cricket's depends on the temperature of the box
so the answer should be
timing of the cricket's chirps
Explanation:Hi!
There are a few types of variables in these types of experiments. They are independent, dependent, and controlled.
The independent is the one changed by the scientist, or in this case, the temperature. The controlled is the things that remain constant through every case, and the dependent is what is being observed, seeing if it changes through the altercation of the independent variable.
In this case, what is being observed is the timing of a cricket's chirps, because it is being watched whether or not temperature affects it.
Therefore, your answer is the third choice, or the timing of the cricket's chirps.
Hope this helped!
Answer:
c
Explanation:
i took test 2022
Biological influences on body weight include genetics (such as the FTO-associated gene), metabolic factors (such as low levels of thyroid hormone), and physiologic factors (such as abnormal levels of various appetite-regulating hormones). From the list below, choose all the correct statements about biological influences on body weight.
a. Obesity is associated with lower amounts of UCP1.
b. The thrifty gene theory suggests that people with this gene universally expend more energy compared to those without the gene.
c. The set-point theory suggests that the body responds to both energy restriction and overeating with physiological changes to maintain its weight within a narrow range.
d. Genetic factors account for 20 to 50% of a person’s BMI.
e. People who have the fat mass and obesity (FTO)-associated gene are generally heavier than those without the gene.
Answer:
a. Obesity is associated with lower amounts of UCP1.
c. The set-point theory suggests that the body responds to both energy restriction and overeating with physiological changes to maintain its weight within a narrow range.
Explanation:
Correct statements:
a. Obesity has been associated with a low expression of the UCP-1 gene in the brown adipose tissue. For example, in transgenic mice, it has been shown that the overexpression of the UCP1 gene is associated with the stimulation of fatty acid oxidation.
c. The set point theory indicates that the human body has a preconfigured weight which is based on information contained in the genome. In consequence, the set point theory states that fluctuations in weight are limited, where there are people that have higher weight set points compared to other persons, and inherent natural mechanisms in the body try to maintain within these ranges.
Incorrect statements:
- Genetic factors account for 50-80% of the body mass index (BMI). The remaining value is due to environmental factors and the interaction between a genotype and the environment.
- The Fat mass and obesity-associated gene (FTO) is a gene located on chromosome 16 which encodes for the alpha-ketoglutarate-dependent dioxygenase enzyme. Although it has been suggested that some allelic variants of this gene are associated with obesity, this gene is always expressed (i.e., constitutively expressed) in the hypothalamus, where its expression is linked to the food intake.
- The 'thrifty gene' theory states that gene variants (alleles) evolved to favor a more efficient use of nutrients, thereby promoting diseases associated with an excess of calories such as obesity and type 2 diabetes.
The correct statements about biological influences on body weight include:
Obesity is associated with lower amounts of UCP1.The set-point theory suggests that the body responds to both energy restriction and overeating with physiological changes to maintain its weight within a narrow range.People who have the fat mass and obesity (FTO)-associated gene are generally heavier than those without the gene.It should be noted that there are biological influences that affect the weight of a person.
The individuals who have the fat mass and obesity (FTO)-associated gene are generally heavier than those without the gene. Also, obesity is associated with lower amounts of UCP1.
In conclusion, the correct options are A, C, and E.
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What element does an atom of 210 Po change into after it emits an alpha particle
Answer:
The element polonium-210 has a mass number 210 and atomic number 84 decays by alpha emission to give an
element with a mass number of 206 and an atomic number of 82.
The element formed is known as Lead as it is the element that has an atomic number of 82
206Pb82—> 210Po84 + 4He2
This is the alpha decay of the Polonium to give Lead( Pb).
The table below shows the level of carbon dioxide in the atmosphere for a period of 50 years.
What conclusion can you make about how the carbon dioxide level has changed over time?
A)The Level has not changed
B)The Level of Co2 has declined
C)The Level of Co2 has risen
D)The Level has reached its maximum
Answer:
The answer is C.)
Explanation:
I took the test.
what is a independent varible
Answer:
here
Explanation:
a variable (often denoted by x ) whose variation does not depend on that of another.
In an experiment, the group that is exposed to the factor being tested
Which one of the organic molecules listed below has more energy stored in its bonds. Proteins Carbohydrates Lipids Nucleic Acids
Answer:
Lipids
Explanation:
Out of the four biological molecules in living systems (carbohydrate, lipids, proteins, nucleic acids), Carbohydrates and lipids have the ability to store energy in their chemical bonds. However, lipids/fats are primarily used by cells for long term storage of energy due to their ability to store more energy than any other organic biomolecule.
The high energy storing ability of lipids is attributed to the carbon bonds in their long fatty acid chain. They store energy in the covalent bonds that form between this carbon elements. The breaking down of one gram of a lipid yields 9 calories of energy, which is more than the 4 calories yielded by proteins and carbohydrates respectively
Answer:
lipids
Explanation:
i took the test
Do fireworks have matter?
Answer:
yes
Explanation:
everthing does even fire
Commonly called sugars are Carbohydrates or lipids?
Answer:
Carbohydrates
Explanation:
Carbohydrates are sugars that come in 2 main forms – simple and complex. This is also referred to as simple sugars and starches.
The difference between a simple and complex carb is in how quickly it is digested and absorbed – as well as it’s chemical structure.
Most carbohydrates can be broken down by digestion into glucose.
Answer:
Carbohydrates
Explanation:
Monosaccharides,and disaccharides,the smallest carbohydrates are commonly called sugars
What do biogeochemical cycles have in common
Answer:
El término ciclo biogeoquímico se deriva del movimiento cíclico de los elementos que forman los organismos biológicos (bio) y el ambiente geológico (geo) e intervienen en un cambio químico. ... En los ciclos gaseosos, los nutrientes circulan principalmente entre la atmósfera (agua) y los organismos vivos.30 jul. 2017
Explanation:
In a planned economy, prices of commodities are controlled by
A. Supply and demand
B. Producers and consumers
C. The government
D. Private enterprises
Answer:
c.
Explanation:
I got it correct when i took the test.
What is the effect of an enzyme has On the energy of a chemical reaction
Answer:
Enzymes are biological catalysts. Catalysts lower the activation energy for reactions. The lower the activation energy for a reaction, the faster the rate. Thus enzymes speed up reactions by lowering activation energy.
An igneous rock is light in color and has extremely coarse grains. What is the most likely origin of the rock?
A a magma chamber
B the bottom of the ocean
C an outer slope of a volcano
D the shore of a volcanic island
Answer:
The correct answer is a magma chamber
Explanation:
Got it right on Edge 2020
Gwen is a forensic technician. One day, the police send a skeleton to her lab and ask her to identify if it belonged to a male or female human. Which scientific field will Gwen use to identify the gender of the skeleton? A. physics B. biology C. chemistry D. entomology
Answer:
(B)iology
Explanation:
Biology is a branch of science that studies about the living organisms.
Which of the following is a structure that has characteristics supporting the idea that the reason
for eukaryotic complexity is due to the fact the primitive eukaryotes ingested free-living bacteria
that then lived inside the cell in a symbiotic relationship?
Select one:
a. DNA
O b. RNA
c. mitochondria
O d. ribosome
Check
Answer:
the mitochondria
Explanation:
endosymbiotic theory is prevalent here.
DNA, RNA, and Ribosomes are also all present in all life.
DNA- genetic material! obviously all present
RNA- a single strand of genetic information to go into the ribosome to make proteins
ribosome; the thing that makes proteins!
The mitochondria is an organized organelle, unlike everything else on this list, which is not present in prokaryotes but eukaryotes.
You test-cross plants you suspect to be AaBb dihybrids and look at 100 offspring, with the following results: Phenotype AB 22 Ab 28 aB 29 ab 21 100 total1. You wish to test the hypothesis that the data are best explained as a dihybrid test cross AaBb x aabb. For a chi-square test, what expected number would you use for the aB class?2. Calculate the chi-square value for these data given the model that the results are from a dihybrid test cross of two genes on separate chromosomes.3. Using the chi-square table provided, determine the probability that the model would give the observed data. Degrees P Values
of freeom | 099 | 090 | 050 | 0.10 | 0.05 | 0.01 | 0.001
1 - 002 .45 2.71 3.84 6.64 10.83
2 0.02 0.21 1.39 4.61 5.99 9.21 13.82
3 0.11 0.58 2.37 6.25 7.81 11.35 16.25
4 0.30 1.03 3.36 7.78 9.49 13.28 18.47
5 0.55 1.61 4.35 9.24 11.07 15.09 20.524. Given this probability, would you accept or reject your model?
Answer:
- 002 .45 2.71 3.84 6.64 10.83
2 0.02 0.21 1.39 4.61 5.99 9.21 13.82
3 0.11 0.58 2.37 6.25 7.81 11.35 16.25
4 0.30 1.03 3.36 7.78 9.49 13.28 18.
Explanation:
From the test cross and X² test, I assume the individual is dihybrid and genes are in separate chromosomes. 1)25 aB. 2)X²=2. 3)P₀.₀₅=7.81. 4)Accept the model.
What is a test cross?A test cross is a cross we use to determine the genotype of individuals whose phenotype we already recognize.
The cross occurs between the individual of an unknown genotype and a recessive h0m0zygous individual. We want to know if the unknown genotype is heter0zyg0us or h0m0zyg0us dominant for a single gene.
Considering only one gene involved in the cross,
if the individual is heter0zyg0us, the progeny will be 50% heter0zyg0te and 50% h0m0zyg0te expressing the recessive trait.The phenotypic and genotypic ratio is 1:1
if the individual is h0m0zyg0us dominant, the whole progeny will be heter0zyg0us.Considering two genes that assort independently are test crossed,
If the individual is a dihybrid -heter0zyg0us for both genes-, the progeny will express equal phenotypic and genotypic ratio, 1:1:1:1.If more than one gene are involved, we can also determine if these genes assort independently, or if they are linked.
If genes are located in different chromosomes or are far from each other in the same chromosome, they assort independently, and their phenotypic and genotypic ratios are 1:1:1:1If these genes are linked, after the test cross, the distribution of phenotypes among the progeny differs from 1:1:1:1.When phenotypes appear in different proportions than the expected ones, we can assume that these genes are linked.
However, the difference between the observed and the expected data can be by random chance. This means that genes could assort independently, but by chance, the observed ratios vary from the expected ones.
To analyze these situations and determine is the difference is by chance or because genes are linked, we need to perform a chi-square test.
---------------------
Now, let us answer the question.
Available data:
Test cross
F1 = 100 individuals
AB 22 Ab 28 aB 29 ab 211) What expected number would you use for the aB class?
To answer this question, we assume genes assort independently, so if this is the case, genotypic ratio should be 1:1:1:1, or 25% AB : 25% aB : 25% Ab : 25% ab
100% ------------- 100 individuals
25% -------------X = (25% x 100) / 100% = 25 individuals AB
25% -------------X = (25% x 100) / 100% = 25 individuals aB
25% -------------X = (25% x 100) / 100% = 25 individuals Ab
25% -------------X = (25% x 100) / 100% = 25 individuals ab
So, accordig to our calculations, the expected number for the aB class is 25 individuals.
----------------------------
2) Calculate the chi-square value.
Model: dihybrid test cross of two genes on separate chromosomes -assort independently-.
AB Ab aB ab
Observed, O 22 28 29 21
Expected, E 25 25 25 25
(O-E)² / E 0.36 0.36 0.64 0.64
X² = Σ(Obs-Exp)²/Exp = 0.36 + 0.36 + 0.64 + 0.64 = 2
X² = 2
The chi-square value is X² = 2
-------------------------
3) Determine the probability that the model would give the observed data.
Freedom degrees = n - 1 Where n is the number of classes ⇒ 4.
Freedom degrees = 4 - 1 = 3
Significance level = 0.05
Conventionally, we use 0.05 = 5% as the significance level.
Critical value (table value) = 7.81
Considering a significance level of 0.05 and 3 freedom degrees, the critical value equals 7.81.
--------------------------
4) would you accept or reject your model?
X² = 2P₀.₀₅ = 7.81X² < P₀.₀₅ ⇒ 2 < 7.81
p value is greater than X², so there is not enough evidence to reject the null hypothesis. The ungenotype might be a dihybrid, and there might be independent assortment.
I would accept the model.
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According to the instruction manual analogy, how many new volumes would each new cell contain whenever a cell splits? Write your answer in the space below.
Answer:
Same volume as the cell it is divided from.
Explanation:
The particular volume will be diverse for different sorts of cells. The best answer would be that the new cell will essentially have a similar volume as the one that it formed or divided from. This is valid for most eukaryotic cells except if different variables like mutations or epigenetics condition.
Increasing volume of the cell and now likewise associated with cell division would be during the two phases G1 and G2 in the cell cycle. This is the development period of the cell preparing for division. No matter what are the condition other than mention above if mitosis or division occurs, the cells will ordinarily end with a similar volume as when it began.
Put in order the connective tissue from hardest to softest.
Answer:
I don't know I am sorry!
Explanation:
confused.
Cardiac veins drain blood into the_______, which will empty into the_______.
a. coronary sinus; left atrium.
b. great cardiac vein; superior vena cava.
c. great cardiac vein; left atrium.
d. inferior vena cava; right atrium.
e. coronary sinus; right atrium.
Answer: Option E.
Coronary sinus, right atrium.
Explanation:
Coronary sinus, right atrium is part of the circulatory system that consist of arteries, arterioles, veins, capillaries that move blood to the heart tissue and remove waste from the blood.
The cardiac veins return deoxygenated blood to the right atrium and it them moves to the right ventricle then to the heart where it becomes oxygenated
The coronary sinus received drain blood from ventricles veins, it then moves the deoxygenated blood to the right atrium which it transfer or move to the right ventricle (through the tricuspid valve which in turn move the blood to the pulmonary artery for pulmonary veins.
Describe how you could use properties to determine whether or not a sample of a substance is pure.
Answer:
It depends the substance
Explanation:
Physical properties of a substance like Color, odor, density, melting temperature, boiling temperature can determine the purity of a substance.
What are the properties of a pure substance ?The matter can be classified as pure substances and mixtures.
Pure substances are made up same kind of particle and have a constant structure.
Pure substances can be up two types elements and compounds.
An element which consists of only one type atom, so it can not be broken down by using physical or chemical method. Elements are metals, non-metals or metalloids.
Compounds are the pure substances if two or more same type of elements are combined chemically, but these can be broken down into separate elements by treating them with chemical methods.
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Which phrases are true of only the mantle?
Answer:
It is the thickest layer of the earth about 2900 km thick
It makes up 82% of the earth's volume and is in a semi - molten state
This is where magma is found and created
Convection currents in the mantle causes the tectonic plates to move
Explanation:
Categorize each monosaccharide with the correct effect it has on your body.
Answer:
Monosaccharides are very important for our body. These are found in our body in the form of energy.
Explanation:
Monosaccharides are the carbohydrates that are so simple and containing the seven atoms in their molecules. This is the only form of the sugar that is fermented direct into the lectic acid. Its general formula is CnH2nOn. These are generally colorless, solid in form.
There are different type of monosaccharides such as
Linear chain monosaccharidesOpen chain stereoisomers.Hemi-acetal Haworth OligosaccharidesPolysaccharidesTheses carbohydrates provides the energy to body. Living organisms used the carbohydrates. These carbohydrates fuels the body. These are stored as glycogen in body.
7. Describe two trends in male and female height using the line graph,
Answer and Explanation:
Females: The height interval with Most females corresponds to the interval of 156-160 cm. represented by 8 individuals. Most females are between 156-170 cm. height. Males: The height interval with Most males corresponds to the interval of 171-175 cm. represented by 7 individuals. Most males are between 171-190 cm. height.Note: You will find the analyzed line chart as an attached file
solve 3x-8=-2 then once you find the value of x, substituted it into x-6
x=2, so 2-6=4.
If this wasn't the answer you were looking for, let me know and I can help you.
You are trying to determine information about the structure of a protein that you have purified. You carry out a series of experiments on this protein. The results are listed below.
1. Size exclusion (aka gel filtration) chromatography of the protein indicates an apparent molecular weight of 240,000 kDa.
2. SDS polyacrylamide gel electrophoresis of the protein carried out WITHOUT the addition of a disulfide-bond reducing agent shows the protein as having an apparent molecular weight of 60,000 kDa.
3. After treatment with performic acid, which cleaves disulfide bonds, the same technique (SDS PAGE) reveals two bands of molecular weights 34,000 kDa and 26,000 kDa.
4. N-terminus identification shows Ala and Leu as amino terminal residues, in equal amounts.
Describe what you can determine about the protein's structure from the above information by answering the questions below.
a. Molecular weight of the native functional protein.
b. Does the protein contain any disulfide bonds? If yes, can you estimate how many ?
c. Can you determine anything about any secondary structure of the protein? If yes, what?
d. Does the protein have quaternary structure? If yes, how many subunits, of what size?
Answer:
if I am not draw molecular weight of the directive functional protein is your answer give thanks to me
The following is an example of what type of figurative language?
The dog was a rocket.
simile
O metaphor
irony
idiom
Metaphor because you are comparing the dog and the rocket without using words "as" or "like", hence option A is correct.
What type of figurative language is a metaphor?A metaphor is similar to a simile when comparing two different things, unlike the simile metaphor does not use the words like or as.
A type of figurative language is a word or expression which means something different from its literal definition. A metaphor substitutes a word or phrase with one that makes an explanation with an image. On the other hand, the simile is also a type of figurative language that compare two different things but uses "as" or "like".
Therefore, comparing the dog and the rocket without using the words "as" or "like", hence option A is correct.
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