Matter can change phase when
1) only heat is applied
2)only pressure is applied
3)heat and/or pressure are applied
4)they are cooled down
In the following diagram of boiling water, what is causing the rising and sinking of the water?
A electromagnetic radiation from the atmosphere
B the insulation of water due to its high heat capacity
C convection from the movement of liquids and gases
D conduction from the fire underneath the pot
Answer:
B.
Explanation:
the insulation of water due to its high heat capacity
With the use of ______________, breeders are able to prevent injuries to animals as well as control the prodigy.
With the use of embryo transfer and artificial insemination, breeders are able to prevent injuries to animals as well as control the prodigy.
What is embryo transfer?Embryo Transfer can be defined as a specific technique where cryogenic embryo are used to fertilize animals, whereas artificial insemination refers to the use of cryogenic sperm to fertilize a particular animal.
In conclusion, with the use of embryo transfer and artificial insemination, breeders are able to prevent injuries to animals as well as control the prodigy.
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bicoid mrna is expressed in a gradient in drosophila embryos. loss of bicoid function leads to embryos with two posterior ends. what if researchers in
With no anterior-posterior body axis, the infant would most likely grow into type D, according to the statement.
What does the bicoid protein do?Bicoid protein promotes the expression of anterior gap genes such hunchback, orthodenticle, & buttonhead while suppressing the translation of downstream mRNA.
Briefing:This embryo lacks workable bicoid mRNA and has bicoid mRNA pumped at the posterior end. Because it lacks fully functioning bicoid mRNA, the anterior end cannot develop, while the posterior end these have bicoid mRNA injected, the posterior tail won't develop, resulting in the absence of an anterior-posterior body axis. Normally, bicoid casein prevents the development of the posterior end and inhibits the establishment of the tail in.
Since there is no anterior-posterior body axis, the correct answer is D.
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Drinking water helps your body maintain
Answer:
Drinking water helps maintain your body
Answer:
the balance of body fluids.
Explanation:
The ability to have these body fluids is very important as they help digestion, absorption, circulation, creation of saliva, transportation of nutrients, and maintenance of body temperature. Drinking water also helps your memory, health, and recovery.
Which pair of properties apply to both mechanical and electromagnetic waves?
A.
Both waves carry energy and refract
B.
Both waves are longitudinal and refract
C.
Both waves are transverse and carry matter from one place to another
D.
Both waves carry energy and do not need a medium to travel through
Answer:
A. Both waves carry energy and refract
Explanation:
There are two major types of waves viz; mechanical waves and electromagnetic eaves. Mechanical waves such as sound waves are waves that require a medium or matter to pass/travel through while electromagnetic waves like light waves do not strictly require a medium to travel i.e through vacuum.
Electromagnetic waves are transverse waves i.e their particles move perpendicularly to the direction of the wave while mechanical waves can either be transverse or longitudinal. All waves carry energy from one medium to another and are capable of refraction i.e. change of direction.
Therefore, both mechanical and electromagnetic waves carry energy and refract.
When shells and corals are impacted by the increasing
acidification of oceans, what breaks down?
Group of answer choices
bicarbonate
carbon dioxide
calcium carbonate
carbon sink
When shells and corals are impacted by the increasing acidification of oceans, calcium carbonate breaks down. In saltwater, carbon dioxide dissolves and lowers pH, which binds up carbonate ions and reduces their abundance.
This technique prevents corals from self-renewing and has the potential to destroy them. Existing coral structures begin to disintegrate into the ocean when calcium carbonate levels fall.
The formation of skeletons in marine organisms is particularly sensitive to acidity, and carbonate, a crucial component of calcium carbonate shells, is one of the molecules with which hydrogen ions form bonds.
Shell-forming marine organisms like corals and oysters mix calcium ion with carbonate from the surrounding saltwater to create calcium carbonate, releasing carbon dioxide and water in the process.
As a result, the capacity of shells and coral to create and retain their structure is impacted by the growing acidity of seas.
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All of the following are characteristics of cancer cells EXCEPT:O They express oncogenes O They do not observe the Hayflick limit O They lack tumor suppressors O They do not enter O They generally have normal karyotypes »
Aneuploidy is a common characteristic of cancer cells, which often have complicated karyotypes with both structural and numerical alterations. therefore, option e is the right choice.
Cancer is a condition when a few of the body's cells grow out of control and spread to other bodily regions.
In the millions of cells that make up the human body, cancer can develop practically anywhere. Human cells typically expand and divide to create new cells as the body requires them. New cells replace old ones when they die as a result of ageing or damage.
Proto-oncogenes, tumour suppressor genes, and DNA repair genes are the three primary gene groups that are typically impacted by the genetic alterations that cause cancer. These modifications are commonly referred to as cancer's "drivers."
Genes that decrease tumours are also involved in regulating cell division and proliferation. Certain tumour suppressor gene mutations can cause cells to divide uncontrollably.
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Food molecules such as proteins cannot be absorbed unless they are digested.
Give one reason why.
Answer:
Your body can't absorb proteins in their natural state. Certain proteases in your stomach and pancreas break the bonds that hold the amino acids in protein together so your body can absorb the composite amino acids individually.
Food molecules cannot be absorbed unless digested because ; They are too big to pass through the plasma membrane, in their natural state.
The food molecules such as protein needs to be broken down into its composites amino acids for easy absorption. food molecules, cannot be absorbed in their natural state because they are too big to pass through the plasma membrane.
Protein is broken down ( digested ) by proteases and pancreas into composite amino acids that is absorbable into the human cells.
Hence we can conclude that protein cannot be absorbed unless digested because they are too big to pass through the plasma membrane, in their natural state.
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phenylketonuria (pku) is a disease that results from a recessive gene. two normal parents produce a child with pku.
The probability that a sperm from the father will contain the PKU allele is known to be half.
The probability that an egg from the mother will contain the PKU allele is said to be half.If their next child is unaffected. the probability that this child is a carrier is known to be 2/3 chances.What is the probability that a parent with phenylketonuria will have a child that carries the gene for the trait?If there is a case where both of a child's parents are known to be carriers, there is said to be a 25% chance that both of the parent will pass on the normal PAH gene and as such 25 + 25 = 50.
Therefore, this affirm the fact that probability that a sperm from the father will contain the PKU allele is known to be half as well as the probability that an egg from the mother will contain the PKU allele is said to be half.
Since both parents are carriers of the bad PKU gene, their child will be tend to be born with the PKU disease if they get one copy of the faulty gene from each parent.
Therefore, The probability that a sperm from the father will contain the PKU allele is known to be half.
The probability that an egg from the mother will contain the PKU allele is said to be half.If their next child is unaffected. the probability that this child is a carrier is known to be 2/3 chances.Learn more about phenylketonuria from
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See full question below
Phenylketonuria (PKU) is a disease that results from a recessive gene. Affected persons are unable to metabolize the amino acid phenylalanine. Two unaffected parents produce a child affected with PKU.
a. What is the probability that a sperm from the father will contain the PKU allele?
b. What is the probability that an egg from the mother will contain the PKU allele?
c. Their second child is unaffected. What is the probability that this child is a carrier?
Is the transport of substances across the membrane against its concentration gradient?
The transport of substances across the membrane against its concentration gradient, yes it is possible through active transport.
Active transport is a process that requires energy to move substances from a low concentration area to a high concentration area. This is opposite to the natural flow of molecules, which is from high to low concentration. Active transport is the movement of ions or molecules across a cell membrane from a lower concentration to a higher concentration, requiring the assistance of a carrier protein and energy in the form of adenosine triphosphate (ATP).
Active transport is divided into two types based on the energy source used: primary and secondary active transport. In primary active transport, energy comes from ATP hydrolysis, whereas in secondary active transport, energy is supplied by the movement of ions down their concentration gradient created by a primary active transport mechanism.
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What will most likely be the result as humans move into new areas, forests are clear cut and housing developments are built?
how does the saturation of a lipid tails of phospholipids within a membrane affect membrane fluidity?
The saturation of a lipid аcid tаil of phospholipids impаcts the fluidity of the membrаne becаuse of the intermoleculаr interаctions between the phospholipid tаils аdd rigidity to the membrаne.
The phospholipid bilаyer is composed of two lаyers of lipids. Eаch lipid contаins а hydrophobic (wаter repelling) tаil аnd а hydrophilic (wаter аttrаcting) heаd. The lipids form into а bilаyer with the hydrophobic tаils fаcing the interior of the bilаyer forming а hydrophobic region held together, in pаrt, by intermoleculаr forces between the tаils. The hydrophilic heаds form а hydrophilic region on either side of the bilаyer thаt cаn interаct with the wаter rich environments on either side of the bilаyer.
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Which fossil would be most useful for evidence of a continental drift?
a fossil turning up on a continent that is the same as one on another
continent
a fossil that is small, hard, abundant, resistant to temperature change,
and easily preserved
a fossil that is large and difficult to find, but sensitive to temperature
change
a fossil that is found deep in the ground on one continent
Archaea (or extremophiles) like to live in extreme environments.
A. True
B. False
Answer:
A. True
Explanation:
We could just split the two parts of "extremophile'' and we get the gist.
"extremo-" (from Latin extremus) means to the highest degree of something.
"-phile" (from Greek philia), means love.
As a result, the term means "loving being in the highest degree (or something like that)."
To explain things, archaea are adapted to these extreme environments (hence the name extremophiles), except for hyperthermophily. Fungi, for example, live in mining areas, which are acidic and metal enriched.
what is the vision and mission statement of the organization?
Answer: Please refer to:
A Mission Statement defines the company's business, its objectives and its approach to reach those objectives. A Vision Statement describes the desired future position of the company. Elements of Mission and Vision Statements are often combined to provide a statement of the company's purposes, goals and values.
Explanation:
Not sure but hope it helps.
what elements are contained in each of the 4 biomlecules?
Answer:Carbohydrate. Carbon, hydrogen, oxygen.
Lipid. Carbon, hydrogen, oxygen.
Protein. Carbon, nitrogen, oxygen, hydrogen, sometimes sulfur.
Nucleic Acid. Carbon, nitrogen, oxygen, phosphorusphos horous, hydroge
Explanation:
A man with blood type 0 marries a women with blood type AB. What percentage of their children will express blood type B ? A) 0% B) 25% C) 50% D) 75% E) 100%
What do you think is the importance of these cellular processes in living things? 1. Photosynthesis 2. Cellular Respiration
1. help maintain the balance of carbon and oxygen in the air
2 Respiration provide cells with oxgen
Blood Smear 1 Blood Smear 2
Blood Smear 3 Blood Smear 4
CASE STUDY 2
A 40-year-old male presents at the Urgent Care Clinic after being hit in the face with a baseball. The patient complains of double vision and pain in his face. Upon physical exam, you observe that the left eye is fixed in downward gaze, but the right eye moves normally. The patient’s right cheek is also very tender. You order a CT scan to determine the extent of his facial injuries. A coronal image through the orbits and sinuses is displayed.
Questions:
1. What orbital bone is fractured and what sinus is involved in this injury?
2. How could this fracture affect movement of the eye?
1. Fracture: Orbital floor of left eye. Sinus: Maxillary sinus.
2. Fracture affects eye movement by entrapment of inferior rectus muscle or nerve, limiting upward gaze and causing double vision.
1. Based on the provided information, it is likely that the patient has a fracture of the orbital floor, specifically the orbital floor of the left eye. The involvement of the left eye being fixed in downward gaze suggests a possible entrapment of the inferior rectus muscle or the inferior orbital nerve, which commonly occurs with orbital floor fractures. Additionally, the tenderness in the right cheek may indicate a possible blowout fracture, which involves the maxillary sinus.
2. The fracture of the orbital floor can affect the movement of the eye due to several reasons. Firstly, the entrapment of the inferior rectus muscle or the inferior orbital nerve can limit the normal upward movement of the affected eye, resulting in a fixed downward gaze as observed in the patient. This restriction can lead to double vision (also known as diplopia) when the eyes are not properly aligned.
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Genetics, 100 points
Answer:
A. YY
B.XY
C.XX
Explanation:
Answer:
A. YY
B. XY
C. XX
Explanation:
What type of cell is pictured on the right?A). EukaryoticB). ProkaryoticPlease Answer ASAP
Cells can be divided into prokarytic and eukaryotic
Rheumatoid arthritis is an autoimmune disease in which the immune system becomes overactive and attacks the body’s own tissues. Which of the following would you expect to be one of the treatments for rheumatoid arthritis?
A-Antibiotic ointments
B-Anti-inflammatory medications
C-Blood transfusions
D-Vaccine injections
Answer:
B anti inflammitory medications
Explanation:
Rheumatoid arthritis, or RA, is an autoimmune and inflammatory disease, which means that your immune system attacks healthy cells in your body by mistake, causing inflammation (painful swelling) in the affected parts of the body. RA mainly attacks the joints, usually many joints at once.
Due to a large flood, sediment settles in a local river bed, making it more shallow on the river's bank. Which is most likely to occur in the river?
a. Cooler water and less dissolved oxygen
b. Warmer water and more dissolved oxygen
c. Lower dissolved oxygen on the shallow banks
d. Oligotrophic water along the shallow riverbank
Due to a large flood, sediment settles in a local river bed, making it more shallow on the river's bank. The most likely to occur in the river is c. Lower dissolved oxygen on the shallow banks
This is because a shallower river has less volume, which causes it to move more slowly. Slow-moving water is not capable of holding as much oxygen as fast-moving water. As a result, the water is warmer, which further decreases oxygen saturation. Oxygen is also depleted when the organic matter in the sediment is decomposed by bacteria. Oxygen-depleted water may be stressful or fatal to aquatic organisms that require it to survive.
Water temperature and dissolved oxygen are inversely related. When water temperature rises, the amount of dissolved oxygen decreases. Oxygen is removed from the water faster when temperatures are high. The reason for this is that water molecules, including dissolved oxygen, become less soluble as temperature rises. In summary, a large flood that causes sediment to settle in a river bed, resulting in a shallow river, is most likely to cause lower dissolved oxygen on the shallow banks. So therefore the correct answer is is c) Lower dissolved oxygen on the shallow banks.
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Another word for skull is ______.
A. vertebrae
B. cartilage
C. jawbone
D. cranium
Answer:
D . Cranium
Explanation:
Cranium is another word for skull.
Answer:
D. Cranium
Explanation:
QUESTION 1 Exercise 11.10. Butterflies. Alice, Bob, and Charlotte are looking for butterflies. They look in three separate parts of a field, so that their probabilities of success do not affect each other. • Alice finds 1 butterfly with probability 17%, and otherwise does not find one • Bob finds 1 butterfly with probability 25%, and otherwise does not find one • Charlotte finds 1 butterfly with probability 45%, and otherwise does not find one Let X be the number of butterflies that they find altogether. Write X as the sum of three indicator random variables, X1, X2, X3 that indicate whether Alice, Bob, Charlotte (respectively) found a butterfly. Then X= X1+X2 +X3. Find the expected value of X by finding the expected value of the sum of the indicator random variables. Your answer will have two decimal places. **This is a straight forward expected value of a sum of random variables, nothing fancy here! QUESTION 2 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? O A. Example 11.10, sampling without replacement O B. Example 11.11, sampling with replacement QUESTION 3 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The first step is to find the expected value of getting the first head. What is the expected value of getting the first head? This will be an integer answer. QUESTION 4 Exercise 11.16. Flipping coins. Flip a coin until the second head comes up. Let X be the number of flips needed to get the second head. What is the E(X). The next step is to find the expected value of getting the second head. Because this is identical to finding the expected number of rolls for the first head (independent events), we just multiply the first head's expected value by 2. This will be an integer answer. QUESTION 5 Exercise 11.17 (a). Waiting for favorite song. Michael puts his iTunes on shuffle mode where songs are not allowed to be replayed. He has 2,781 songs saved on iTunes, and exactly one of these is his favorite. How many songs is he expected to have to listen to until his very favorite song comes up? Is this like Example 11.10, sampling without replacement, OR like Example 11.11, sampling with replacement? A. Example 11.11, sampling with replacement B. Example 11.10, sampling without replacement
In Exercise 11.10, the expected value of the number of butterflies found by Alice, Bob, and Charlotte is obtained by finding the expected value of the sum of three indicator random variables.
In Exercise 11.16, the expected value of the number of flips needed to get the second head in a coin flipping experiment is determined. These exercises involve different scenarios of sampling with and without replacement.
In Exercise 11.10, the expected value of X, the total number of butterflies found, is found by calculating the expected value of each indicator random variable (X1, X2, X3) representing whether Alice, Bob, and Charlotte found a butterfly, respectively.
The expected value of each indicator variable can be obtained by multiplying the probability of success (finding a butterfly) by 1 and the probability of failure (not finding a butterfly) by 0. Then, the expected value of X is calculated as the sum of the expected values of the indicator variables.
In Exercise 11.16, the expected value of X, the number of flips needed to get the second head, is determined. To find this value, we first need to find the expected value of getting the first head. This scenario is similar to Example 11.11, which involves sampling with replacement.
Each coin flip is an independent event, and the probability of getting a head is constant at 0.5.
Therefore, the expected value of getting the first head is 1/p, where p is the probability of success (0.5 in this case).
In Exercise 11.17 (a), the scenario of waiting for a favorite song in Michael's iTunes playlist involves sampling without replacement. Each song played is not replayed, and there is only one favorite song among the total number of songs.
Therefore, this scenario is similar to Example 11.10, sampling without replacement.
To find the expected number of songs Michael needs to listen to until his favorite song comes up, the formula for sampling without replacement is used, which is the reciprocal of the probability of selecting the favorite song at each step.
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I need help pls...
If a man has red-green color blindness, a sex-linked dominant trait, what is a possible genotype of his father? I. XR Y II. Xr Y III. XR XR IV XR Xr A. Only III B. I and III C. I and II D. I, III, and IV
Answer:
C
Explanation:
The possible genotype of his father is \(X^RY\) and \(X^rY\).
For sex-linked traits, an affected man always inherit the affected allele from the mother. The other chromosome, which is the Y chromosome is always from the father and this confers maleness on individuals.
The father of a man affected for a sex-linked trait can be affected for the same trait or otherwise. It does not have any bearing on the male child since the father only donates the Y chromosome to the male child.
Hence, in this case, the father can either be affected for the same trait (\(X^RY\)) or be free from it (\(X^rY\)).
The correct option is C.
what change occurred in each population of bacteria from the early generation to the later generation ?
The maximal population of some bacterial species at the end of the log phase can reach a density of 10 to 30 billion cells per milliliter under ideal circumstances.
Since the very beginning of life on Earth, bacteria have existed.
There is strong evidence that bacteria have existed since the early Precambrian Period, or roughly 3.5 billion years ago, as evidenced by the discovery of fossilized bacteria in rocks from the Devonian Period (419.2 million to 358.9 million years ago).
At least since the Paleoproterozoic period, which lasted for around 1.8 billion years, when oxygen was produced by cyanobacteria and entered the atmosphere, bacteria have been present in large numbers on Earth.
As a result, bacteria have had plenty of time to evolve into a variety of offspring forms and adapt to their environs.
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The trp operon in E.coli regulates genes that code for enzymes required for synthesis of the amino acid tryptophan. The trp operon is a repressible
operon. When tryptophan is not available in the environment, the trp repressor protein is
O Therefore, RNA polymerase can bind to the
e to begin transcription.
Reset
Next
Trp repressor protein is- inactive, RNA polymerase can bind to the- promoter.
What is operon?An operon is a collection of genes that are collectively transcribed to produce a single messenger RNA molecule that in turn codes for numerous proteins.
A trp operon is a collection of genes that code for the enzymes that break down the amino acid tryptophan.
When tryptophan is present in low concentrations, the trp operon is active, whereas it is inactive when tryptophan is present. This is because it is a repressor protein and attenuator controlled mechanism.
In the presence of tryptophan, the repressor binds to the operator of the DNA sequence, blocks the path taken by RNA polymerase, and stops transcription, whereas in the absence of tryptophan.
The repressor molecule is inactive and RNA polymerase can promote the transcription of genes after binding to the promoter sequence.
Thus, the answers are inactive and promotor respectively.
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 hold your hand in front of your face. Look at it with one eye closed. Then with other explain why the image of your hand shifts
Answer:
when you look at your hand from one eye, then the other, the angle from which you're looking at your hand changes, causing it to look slightly different.