Answer: Gene that arose through gene duplication, but by acquiring mutations became nonfunctional.
Explanation:
A gene is a functional unit of heredity formed by DNA. They possess a sequence of nitrogenous bases that during translation is read by ribosomes to produce molecules called proteins. A pseudogene is a DNA sequence that resembles a gene, but which has been inactivated in the course of evolution by mutations in its sequence. Thus, it is a gene that derives from other known genes and whose functions are different, may have lost their functionality or have radically changed it. To this day, it is not known exactly how pseudogenes are created, however some theories are as follows:
1. A gene duplication can generate two copies of a gene when only one is needed. A mutation would then occur that deactivates one of the copies. In addition, the duplication event may not be complete, so that the copy has incomplete promoters.
2. They may be fragments of the messenger RNA transcript of a gene may be spontaneously reverse transcribed and inserted into the chromosomal DNA. They lack the promoters of normal genes, so they are not expressed normally.
3. A gene may become non-functional or inactivated if such a mutation becomes fixed in the population. This can occur by normal means such as natural selection or genetic drift.
Find some applications of
nanotechnology in medical care and disease prevention.
Answer:
Preventing illnesses, more quickly diagnose, control diseases, treat diseases with fewer side effects, and create better medical aids such as more compatible prosthetics.
Polymers are formed via dehydration reactions by molecules. Which of the following best describes a dehydration reaction?
Assembling molecules in either carbonyl or carboxyl functional groups
Assembling molecules in either hydroxyl or carboxyl functional groups
Dissembling molecules in carboxyl functional groups
Dissembling molecules in hydroxyl functional groups
Answer:
Assembling molecules in either hydroxyl or carboxyl functional groups
Explanation:
Polymers are formed via dehydration reactions by molecules. ... For this a dehydration reaction first off is the assembling of monomers when water is lost. And for dehydration reactions molecules that contain hydroxyl or carboxyl as functional groups.
write the four names of disease,causative agent,disease spread mechanism, precautions.
give the correct answer.
Explanation:
hhxuxjxcjieidie you doing today I don't euheudux ruurjf don't know e u you have uhcjfudjrjfju jfjfjfjfjjffj y I will call him tomorrow is fine with Grace to call you back I don't think so much and have been in contact and o I don't think so I have no clue how was the office and they are going home for the holidays so much energy and o o to working together you are welcome dear I will
A scientist is researching Down Syndrome. He is studying what type of disease?
What holds the hydrogen
atoms to the
oxygen atom?
Answer:Covalent bonds
Explanation:
will mark Brainliest!!!!!! To corroborate information is to?
find evidence that opposes a scientific position.
find evidence that supports a scientific position.
find evidence that proves a scientific position.
find evidence that disproves a scientific position.
The most correct option as to what corroborating information means would be to find evidence that supports a scientific position.
Corroborate is an English word that means 'to agree with' or 'give credence to'.
Hence:
Finding evidence that opposes a scientific position is a wrong option because that is the complete opposite of what corroborate means. Finding evidence that approves a scientific position is also a wrong option because corroborating a statement does not necessarily make the statement to be scientifically correct.Finding evidence that disproves a scientific position is also incorrect. Corroborate neither translates to approve nor disprove,Therefore, the correct option that clearly explains what corroborate means in the context of science is to find evidence that supports a scientific position.
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Dr. Ignaz Semmelweis was a Hungarian doctor investigating the deaths of women in his
maternity ward from childbed fever. Which statement below is a valid hypothesis made by
Dr. Semmelweis?
O Doctors caused childbed fever.
Midwives caused childbed fever.
If doctors disinfect hands before delivering babies, then there will be less childbed fever.
o If a woman goes into the hospital then she will die of childbed lever.
The investigation for death of women in maternity ward is identified by scientific method of hypothesis testing.
The null hypothesis statements and alternative hypothesis statement can be as,
H0 : Doctors caused child bed fever.
Ha : Midwives caused child bed fever.
Child bed fever is the infection in some part of female reproductive organs usually ovary which causes the abortion of a child or premature child birth.
The hypothesis to check Dr.Ignaz have to make a null hypothesis statement against which there will be alternative hypothesis statement which will cause the observation and then reaching a conclusion.
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While examining the scene of a murder, Investigator Allen notes that the newspaper is opened on the kitchen table. He concludes that the victim had already gone out to get his newspaper before he was murdered. This evidence is an example of an indicative act.
True
False
Answer:
The correct answer is:
Explanation:
True is the correct answer...
Hope this helps....
Have a nice day!!!!
Your patient has a rash, a fever, and a very high white blood cell count. Blood specimens are taken, put into sterile culture bottles, and sent down to the microbiology lab for incubation and analysis. Select the statement that best reflects why microbial analysis of blood is an important step in this patient diagnosis: SP Select one or more:
a. A lack of microbes in the blood means that the patient's health is critical
b. minimal microbial growth in the blood sample is normal and should be ignored
c. Blood culture analysis would not provide any useful information to the diagnostic team
d. Blood specimen are often obtain through poor aseptic technique by the healthcare worker
e. microbial growth in the blood sample may possibly indicate sepsis in the patient
Answer:
e. microbial growth in the blood sample may possibly indicate sepsis in the patient.
easy biology question below first correct answer gets brainliest
Answer:
It's probably c?
Explanation:
What was the experimental variable we tested in the lodine Clock Reaction?
Answer:Experiment 1084-04: lodine Clock Reaction Purpose Determine the rate law for an iodine clock reaction and study the influence of st on that reaction abruptly that it can be as startling as the sudden sound of an alarm clock, hence the clock reaction Background Information chemical equations can be written for chemical reactions, only some will proceed while others do not. Among the ones that do proceed some reactions occur as soon as reactants are mixed, while others occur over minutes, hours, or n over several years. What are the controlling in predicting if a reaction will take place and the speed at which it will? Thermodynamics can answer the question, "Will the reaction take place?" Once the reaction is capable of proceeding kinetics can answer the other question, "How fast You will study the rate of the reduction of potassium persulfate, KoS Os, with sodium iodide, Nal. The net ionic equation for the reaction is eve The rate law for this reaction is in the form of And you will need to determine the reaction orders a and b, as well as the rate constant, k. Keep in mind that exponents can not be determined by jus looking at the chemical equation the reaction will take place? The rate of a reaction is defined as the increase in molar concentration of product of a reaction per unit time or the decrease in molar concentration of reectant per unit time. The usual unit for the rate is moles per liter per sec (mol/L s or M/s). Experimentally, it has been found that a reaction rate depends on the concentrations of the reactants. Usually a higher reactant concentration increases chance of collision among the reactants per unit time causing a faster reaction rate. An equation describing the relationship between the reaction rate and the concentration of the reactants You will need a way to determine how much of the reactants were spent over the given time period. Preferably, the concentrations of the reactants should not change too much; therefore the reaction rate can be represented by the initial concentrations of reactants (the initial-rate method). In this experiment, we will couple another reaction that consumes the product, 12 very quickly. The new reaction is the reduction of is called a rate law. For the elementary reaction Note that l2, which was produced in reaction (1) is consumed as fast as it is produced by reaction (2) to regenerate two l. i.e. [门is kept constant. By keeping [S203-9 much smaller than the initial concentration of S,0, we can assure [S20,1 is also kept nearly constant when S203 is completely consumed. At this point, the 12 is no longer eliminated by the reaction and starts to accumulate. This point is signaled by sudden appearance of the dark color from the interaction of l2 with starch indicator. We can measure the time elapsed till the color appears Rate k [AIB] The proportionality constant, k, is called the ate constant in the relationship between the rate nd concentrations. The rate constant has a fixed alue as long as the reaction temperature is held nstant. The exponents, a and b, are called the action order, and are frequently, but not always, egers. More importantly, they must be termined experimentally In this experiment you will determine the rate an iodine clock reaction, and study the effects of perature and a catalyst to the reaction rate ugh there are several versions of an iodine k reaction, all of them share a common feature: completion of the reaction is signaled by the en appearance of a dark purple color. This is characteristic of the interaction between cular iodine and starch. When the reaction is ed out correctly, this color will appear so According to the reaction stoichiometries of reactions (1) and (2), two molecules of S203 are required to counteract the consumption of one molecule of S20a2. Since S2032 would have been completely consumed when the dark purple color appeared, the Δ[SO ] should be % of the initial concentration of S203 15-08-2] = ½ initial [S,03-21
In your own words, what is the definition for Triple X Syndrome?
Answer:
Triple X Syndrome happens only in females. It is when a female recieves an extra X chromosome, so instead of having an XX chromosome, a person with Triple X Syndrome would have XXX.
Decide whether each statement is a 'positive' or 'negative effect of deforestation.
a) It provides land to grow food or keep farm animals.
b) It makes mudslides more common.
c) It allows new roads to be built to connect cities.
d) It can make the area warmer and windier.
e) It can cause extinctions by destroying habitats.
f ) It allows more biofuels to be grown to provide energy.
g) It increases the amount of soil carried away by rivers.
h) It increases the amount of carbon dioxide in the atmosphere.
Answer:
1) negative because it provides land for something and they need to take of trees maybe.
2) positive because that ends up in trees and they grow more
3) negative because it takes a lot of space so trees need to be taken off.
4) positive.
5) negative because the habitats of the animals are normally near trees
6) negative.
7) positive because it lets the trees grow better
8) positive because plant breath carbon dioxide.
What is the independent variable in the experiment?
A. growth rate of plants
B. amount of light each terrarium is exposed to
Which is a main function of lipids?
Answer:
lipids plays the role of storage of energy
or forming cell membranes alone
Why do animal cells not need central vacuoles?
A: Animal cells are round.
B:Animal cells have cell walls.
C:Animals do not produce their own food
D:bodies have skeletons.
Answer:
B:animal cells have cell walls
ASAP
A ______ is a stack of _______ that provides the chloroplasts with increased surface area.
A. granum, thylakoid
B. thylakoid, granum
C. thylakoid, chlorophyll
D. granum, chlorophyll
A thylakoid is a stack of chlorophyll that provides the chloroplasts with increased surface area (Option C).
What is a chloroplast?A chloroplast is an organelle used by plant cells to generate carbohydrates by means of photosynthesis.
The chloroplasts contain thylakoid sacs composed of chlorophyll whose function is to capt sunlight.
In conclusion, a thylakoid contain chlorophyll for the chloroplasts (Option C).
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Food moved to the back of the mouth by the tongue causes all of the following EXCEPT covering the opening of the larynx by the epiglottis. pressure against the pharynx to initiate swallowing. elevation of the soft palate to seal off the nasal cavity. the swallowing center stimulates successive waves of muscle contraction in the esophagus. churning of the stomach contents.
Answer:
churning of the stomach contents.
Explanation:
When food is moved to the back of the mouth by the tongue (deglutition), it does not cause the churning of the stomach contents.
The churning of stomach contents occurs when the bolus from the mouth has entered through the lower esophageal sphincter into the stomach. Churning is the mixing of the bolus with digestive juices containing acids and enzymes secreted from the stomach lining.
Write the name of the forces A and B in the diagram.
Answer:
is that a line segment
why us a spirogyra called a thallus ? which types of nutrition does it show ?why?
Explanation:
a plant body that is not differentiated into stem and leaves and lacks true roots and a vascular system. hence spirogyra called a thallus.
Spirogyra is an example of Green algae , thus it prepare its own food by process of photosynthesis in presence of sunlight and chlorophyll.So, its nutrition type is Autorophic.
When cells are damaged, they release proteins called ____ ?
inflammatory chemical signals that evoke local vasodilation
ASAP
Which of the following means 'Dehydrated'?
A. Too much water
B. Too little acid
C. Too much acid
D. Too little water
Answer:
D, too little water
pls answer this question i think easy
Answer:c
Explanation:it must be c if im wrong then sue me!
Answer:
B. Food is broken into simpler molecules.
Explanation:
these small molecules are; proteins, amino acids, glucose, e.t.c
During DNA replication, when the mRNA molecule is made by complementary base pairing, the percentage of adenine bases would be equal to which of the following bases in a RNA molecule?
Adenine
Cytosine
Guanine
Uracil
Answer:
I think the answer is uracil because it has the same percentage as thymine in RNA which is 30% and thymine has the same percentage as adenine.
I hope this helps
is when a system is in motion but is balanced because it experiences no net change.
A. Dynamic equilibrium
OB. A convection current
OC. Static equilibrium
D. Co-evolution
Answer:
dynamic equilibrium is the answer.
Dynamic - motion
Equilibrium - no net change
A frog cannot keep in the classes pisces why
Answer:
because it has a four chambered heart
Answer:
hii can you be my friend dear
because of 4 chamber of heart
hope it will help you
(Giving 100 points)
Which statement is true?
Atherosclerosis increases the delivery of oxygen to body tissues.
Atherosclerosis is characterized by plaque buildup in blood cells.
Atherosclerosis slows the delivery of carbon dioxide to wound sites.
Atherosclerosis constricts or blocks blood vessels.
Write the changes occurring in the passage through the alimentary canal as a person has ingested roti and dal as a part of his meal
Answer:
A person had roti and dal for his lunch. Trace the changes in those during its passage through the alimentary canal. Answer: ... The saliva contains an enzyme salivary amylase (ptyalin) which converts starch in roti into maltose, isomaltose and small dextrins called a-dextrin.
Explanation:
Besides antibodies _________ are made after an active immune response.
1 point
Macrophage
Complement proteins
Antigen
Memory cells
Answer:
Memory cells
Explanation:
Active immunity is defined as immunity to a pathogen that occurs following exposure to said pathogen. When the body is exposed to a novel disease agent, B cells, a type of white blood cell, create antibodies that assist in destroying or neutralizing the disease agent.
genesis high grade heat and pressure is steps in what
Answer:
Metamorphic rock.
Explanation:
This is the answer I hope this help you out. Enjoy your day!
