Answer:
If you have any more information about this question that would help to answer appropriatly. If the question is asking about tests done in mice and then in humans I would propose that the initals trial work and now they can begin more tirals that involve dosing to find the levels of toxicity.
Explanation:
I hope this helps.
Which statements regarding hypotheses are true?
Check all that apply.
Hypotheses are based on observations.
B. Hypotheses are written when experiments
are complete.
C. Hypotheses are formed from testable
questions.
D. Hypotheses are tested with controlled
Experiments
A sample of a rare metal weighs 18.15 g. Several labs weigh the sample repeatedly. Which lab has the most precise measurements? A. Lab 1: 17.99 g, 18.15 g, 18.23 g B. Lab 2: 18.1 g, 18.3 g, 18.2 g C. Lab 3: 18.11 g, 18.13 g, 18.97 g D. Lab 4: 18.93 g, 19.03 g; 18.95 g
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.
What work did Francis Bacon do with the design and organization of libraries ?
The correct answer to this open question is the following.
What Francis Bacon did with the design and organization of libraries was that he created a classification for books and texts, that served as an influence for the way big libraries, such as the Library of Congress classifies books.
Francis Bacon (1561-1626) classified his books into three categories: reason, memory, and imagination. This system was first copied by antifederalist politician Thomas Jefferson to organize his library. In the end, Thomas Jefferson developed a big catalog with 44 categories. That is how Francis Bacon influence the design and organization of libraries.
You collect a specimen from a deep jungle survey. It appears to be a new species. You get to name it, but before you can, you must classify it first. It appears to be single celled, and contains chloroplasts. When a few of them are kept in the dark too long, they die. Under the microscope you can see a dark colored nucleus. What classification fits them best?
Answer:
This question is incomplete/lacks options, the options are:
A) Plant-like protists
B) Plants
C) Fungus
D) Archeaebacteria
The answer is A) Plant-like protists
Explanation:
Organisms of the kingdom protista are eukaryotic (possess a membrane-bound nucleus) unicellular or multicellular organisms that can be autotrophic or heterotrophic in nature depending on whether they are plant or animal like. Protists are classified borganisms that do not fit into the other group classification i.e. fungi, plant, animal and bacteria.
However, organisms in the group called PROTISTS can either be animal-like or plant-like depending on whether they possess some animal or plant characteristics respectively. Plant-like protist, like the organism described in the question, have CHLOROPLAST organelles like plants and hence, can perform photosynthesis in the presence of sunlight to synthesize their own food. This characteristics makes them autotrophic like plants.
Therefore, based on the characteristics of the new specimen collected from a deep jungle survey, the classification that fits it best is PLANT-LIKE PROTISTS.
A woman with normal blood clotting ability whose father was a hemophiliac and whose mother was normal with no family history of hemophilia marries a man whose blood has normal clotting ability. Recall that hemophilia is an X-linked trait. What is the probability that their first child will be a son with hemophilia
Answer:
The answer is 25%.
Explanation:
Hemophilia is a recessive illness that is x-linked.
If the husband has normal clotting ability, that means he has the dominant gene since he has only one X chromosome.
Since there is a probability that their child will have hemophilia, this means that the woman, who has 2 X chromosomes but has normal blood clotting abilities, has one dominant and one recessive hemophilia gene.
The probability that their first child will be a male is 50% and the probability that he will have hemophilia is also 50% since he will only get the Y chromosome from the father and the mother has one dominant and one recessive.
So the probability that their first child will be a son with hemophilia is 25%.
I hope this answer helps.
H2 is a molecule, but H2O is a _____. diatomic molecule compound neuron photon
Answer:
Compound.
Explanation:
If a molecule consists of 2 or more elements its a compound.
Answer:
[tex]\Large \boxed{\mathrm{compound}}[/tex]
Explanation:
[tex]\sf H_2O[/tex] is a compound.
A compound consists of two or more elements that are chemically bonded together.
Easy Question. Will Mark Brainliest
What happened to the population of Atlantic cod in 1992 as a result of the increased fishing pressure?
Atlantic cod were driven to extinction
The population of Atlantic cod increased
The population of Atlantic cod remained steady
The population of Atlantic cod underwent a dramatic decline
Answer:
D. The population of Atlantic cod underwent a dramatic decline
Explanation:
Atlantic cod is known for heavily fished species and north European fishers use to do fishing there for thousand years.
The fishing practice was known to support the US and Canada fishing economy until 1992 but after 1992, a drasctic decline in the population of Atlantic cod was noticed due to increased fishing pressure and there was a ban on fishing in Atlantic cod after that.
Hence, the correct option is "D".
Answer:I do but give the other person brainliest
Explanation:
what is an atoms atomic number? the number of electrons in an atom the number of neutrons in an atom the number of protons in an atom the number of bonds in an atom
Answer:
C
Explanation:
Cause its C
Is a tardigrade a living thing
Answer:
Yes!
Explanation:
Tardigrade, (phylum Tardigrada), also called water bear or moss piglet, any of more than 1,100 species of free-LIVING tiny invertebrates belonging to the phylum Tardigrada. They are considered to be close relatives of arthropods
Which types of chromosome mutations a.Increase the amount of genetic material in a particular chromosome
Answer:
Chromosomal rearrangements encompass several different classes of events: deletions, duplications, inversions; and translocatio.
_______ are thought to have been present before vertebrates.
Answer:
Explanation:
i m not confirmed but i think hag fishes are present before vertebrates
What is the entire object shown in the image?
Answer:eukaryote
Explanation:
The object shown in the image is a b. eukaryote
A Eukaryote is an organism that has either a single cell or multiple cells. These cells have:
a nucleus which contains genetic materialplasma membranecytoplasm ribosomesThe picture shown is that of a eukaryotic cell where the nucleus and the plasma membrane are visible.
Because these features are present, we can conclude that this is a eukaryotic cell.
Find out more at https://brainly.com/question/17299888.
Options for this question include:
a. prokaryote
b. eukaryote
c. chloroplast
d. mitochondrion
What biological macromolecule is made up of monomers like the one shown below? A. Lipid B. Nucleic acid C. Protein D. Carbohydrate
Answer:
D. Carbohydrate
Explanation:
Answer:
lipids
Explanation:
I just did it and got it right
The presence of a transit sequence directs a protein from the ________ to the ________. The presence of a transit sequence directs a protein from the ________ to the ________. signal recognition particle; nucleus cytosol; plasma membrane endoplasmic reticulum; Golgi apparatus endoplasmic reticulum; nucleus cytosol; mitochondrion or chloroplast
Answer:
The correct answer is "nucleus cytosol; mitochondrion or chloroplast".
Explanation:
A transit sequence, also known as signal peptide, in a protein is a series of amino acids that indicate that a protein is not synthesized matured, and a portion of the protein must be cleaved in order to have the protein in its mature form. Transit sequences serves as regulators of protein transport, since they indicate that a protein must transit from the nucleus cytosol to different organelles, such as the mitochondrion or chloroplast. Examples of this type of proteins, include: alcohol dehydrogenase, DNA polymerase, and RNA polymerase.
For each of the diploid genotypes presented below, determine the genetic make up for all of the possible haploid gametes.
a. Rr
b. RrYy
c. rrYy
d. RrYY
e. RrYyBb
Answer:
a. R and r
b. RY, Ry, rY, and ry
c. rY and ry
d. RY and rY
e. RYB, RYb, RyB, Ryb, rYB, rYb, ryB, and ryb
Explanation:
According to Mendelian principle, a gene is made up of 2 alleles and these alleles segregate during gametes formation to randomly unite back during fertilization. Hence;
Rr can only segregate as R and r
RrYy can segregate as RY, Ry, rY, and ry
rrYy can only segregate as rY and ry
RrYY can only segregate as RY and rY
RrYyBb can segregate as RYB, RYb, RyB, Ryb, rYB, rYb, ryB, and ryb
Each of the diploid genotypes are:
R and r RY, Ry, rY, and ry rY and ry RY and rY RYB, RYb, RyB, Ryb, rYB, rYb, ryB, and rybAccording to Mendel's Law of Segregation.
What is Mendel's law of segregation assortment?
For the F2 generation, the law of segregation requires that each gamete acquire either an R allele or an r allele along with either a Y allele or a y allele.
The law of independent assortment says that a gamete into which an r allele is sorted would be equally likely to contain either a Y allele or a y allele.
Thus, is based on Mendel's law of segregation assortment.
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We are trying to determine the possible modes of inheritance for some particular human disorder. We have a very small pedigree for this disorder. Assuming the pedigree is accurate, indicate which of the modes of inheritance are consistent with this pedigree:
Answer:
The correct choices will be "X-Linked Recessive".
Explanation:
The heritage couldn't predominate because it would not be prevalent or observable in every decade at least. This could be a recessive gene, then. It would be a recessive condition related to X as it affects only individuals (male).X-Linked succession characteristics measured by chromosome-transported alleles become responded to although the X-linked.What is the pH of a 0.00125 M HCl solution?
Answer:
[tex]pH=2.9[/tex]
Explanation:
Hello,
In this case, the pH is computed by:
[tex]pH=-log([H^+])[/tex]
Whereas the concentration of hydrogen ions equals the concentration of the acid for strong acids such as hydrochloric acid (HCl) due to its complete ionization in solution, which means that such concentration is 0.00125 M. Thus, the pH turns out:
[tex]pH=-log(0.00125)\\\\pH=2.9[/tex]
Regards.
By definition, the pH of a 0.00125 M HCl solution is 2.90.
You need to know that pH is the Hydrogen Potential. It is a measure of acidity or alkalinity that indicates the amount of hydrogen ions present in a solution or substance.
Mathematically, pH is calculated as the negative base 10 logarithm of the activity of hydrogen ions:
pH= - log [H⁺]
The numerical scale that measures the pH of substances includes the numbers from 0 to 14. The pH value 7 corresponds to neutral substances. Acidic substances are those with a pH lower than 7, while basic substances have a pH higher than 7.
On the other side, a strong acid is an acid that dissociates completely in solution at constant temperature and pressure. Under these conditions, the concentration of a strong acid is equal to the concentration of hydrogen ions (Hydronium or H₃O⁺).
In this case, HCl is a strong acid. Then: [HCl]= [H⁺]= 0.00125 M
Reeplacing in the definition of pH:
pH= - log 0.00125 M
Solving:
pH= 2.90
Finally, the pH of a 0.00125 M HCl solution is 2.90.
Learn more:
brainly.com/question/3992824?referrer=searchResultshttps://brainly.com/question/12200689brainly.com/question/16032912?referrer=searchResults brainly.com/question/13557815?referrer=searchResultswhat's the balanced equation for nitric acid + aluminium oxide = aluminium nitrate + water
Answer:
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
Explanation:
left side of arrow right side of arrow
Al 2 1
O 3 1
H 1 2
NO₃ 1 3
Al₂O₃ + 6HNO₃ → 2Al(NO₃)₃ + 3H₂O
now there are,
left side of arrow right side of arrow
Al 2 2
O 3 3
H 6 6
NO₃ 6 6
you have to try and multiply different numbers and stop when you have equal molecule on both sides of the arrow.
Answer:
6HNO₃ ₊ Al₂O₃ ⇒ 2Al(NO₃)₃ ₊ 3H₂O
Explanation:
HNO₃ ₊ Al₂O₃ ⇒ Al(NO₃)₃ ₊ H₂O
H=1 Al=1
N=1 N=3
0=3 0=9
AL=2 H=2
O=3 0=1
6HNO₃ ₊ Al₂O₃ ⇒ 2Al(NO₃)₃ ₊ 3H₂O
H=6 H=6
N=6 N=6
O=18 O=18
Al=2 Al=2
O=3 O=3
Which is a true statement regarding metastasis? Increased cell-to-cell adhesion helps metastasis. Lack of proteases and collagenases aids in metastasis. Cells must first escape the basement membrane of tissue. Penetration of the basement membrane of the vessel occurs first.
Answer: The correct answer to the question is option C
CELLS MUST FIRST ESCAPE THE BASEMENT MEMBRANE OF TISSUES.
Explanation: For any tumour cell to be able to gain entry into the lymphatic circulation or into the blood,there must first be an escape of the tumour cell from the basement membrane of the tissue it originated from,when the tumor first moves out if the basement membrane,it further moves through the extracellular space and then finds its way to the basement membrane of the vessel.
Spread of the tumour cells from it's point of origin (metastasis) is thought to involve the loss of cell to cell adhesion proteases and collagenases digestion of the basement membrane.
The basement membrane of the vessel can only be penetrated only if and after the basement membrane of the affected organ has been affected/breached.
the strong, lower part of the mantle
between the asthenosphere and the outer
core
Answer:
The Mesosphere
Explanation:
Which two substances are needed for cellular respiration
Just in case someone needs the answer it’s Carbon Dioxide and Oxygen <3
Answer:
oxygen carbon dioxide
Explanation:
cause
Please answer this scientific question quickly
Consider the plant phenotypes: RR is red (dominant) and WW is white (dominant) What type of inheritance will be shown where the alleles from each
parent blend together in the expressed phenotype of the offspring? (1 point)
O codominance
O epistatis
O intermediate inheritance
O recessive inheritance
Answer:
The correct answer is - intermediate inheritance.
Explanation:
Incomplete dominance is type of inheritance pattern tat takes place when the phenotype or the alleles of the two parents blend together to form a new phenotype in next generation.
The alleles that can be dominant or recessive from each parent blend together to creates and expressed in mixed phenotype. An example is a white flower and a red flower cross to form pink flowers.
Thus, the correct answer is - intermediate dominance.
Answer:
incomplete dominance
Explanation:
Define agglutinogen and agglutinins??
Answer:
an agglutinogen is any antigen, or foreign cell, toxin, bacteria, or anything else that gets the immune system reacting, that makes your body generate agglutinins. ... Agglutinins have multiple arms that can bind onto agglutinogens. This means one agglutinin can hold lots of invading pathogens together
Explanation:
Which is not a nicotine substitute?
A nicotine patch
B nasal spray
C nicotine gum
D herbal cigarettes
What is the difference between the review of systems and the physical examination sections of the H?
Answer:
The difference between the review of systems and the physical examination sections of the H is discussed below in details.
Explanation:
The Review of Systems (ROS) is a precise record of potential indications the patient may be feeling, created by body system. Alternative titles cover Systemic Review and Functional Table. It also may be related to as a twelve Point Review of Systems.
The Physical Examination (PE) is an accurate estimation of the patient’s situation. The examiner examines, pokes, and prods the patient and registers the results here.
1. Why do we have so many satellites "looking
into the universe?
please please answer ITS DUE IN 20 MIN How do we know which lions are related to each other?
Answer:
1. Females tend to remain in the pride in which they are born, so they are usually related to each other.
2. Is identifiable from the whisker spots, which are found on each side of the face in rows.
Explanation:
what is bun food source
Answer:
Urea nitrogen is a normal waste product that your body creates after you eat.
Explanation:
Keep your heels on the ground" is an appropriate cue to give clients during which of the following movements?
A. Dumbbell incline bench press
B. Squat
C. Lunge
D. Bench press
Answer:
If the selection squat is there to select from, it's that one. This is assuming your question is referring to the barbell squat. The workout individual would need to keep chest up and the rhomboids contracted. This allows the area to create a "shelf" for the bar to have an area to rest on the back.
Explanation:
To "Keep your heels on the ground" is an appropriate cue to give clients during Squat movements
First of all, we have to understand the answer above, we have to know what the term Squat is all about.
In Body weight exercise, the term "Squats" simply refers to when an individual stands up with his/her own feet being about a shoulder-width apart from each other and then a tiny and quick turned out movement with your weight all in your heels. then link your hips to sit your back side back and thereafter the person bend down his/her knees until after which the person's thighs are side by side to the ground. thereafter one has to push through one's heels to stand back upright and lastly the person has to tighten his/her back side and keep their core closed as you stand. To Keep your heels on the ground as related to squat is important to be able to achieve the squatting technique.
Conclusively, we can therefore say that to "Keep your heels on the ground" is an appropriate cue to give clients during Squat movements.
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