RNA uses uracil in place of thymine, found in DNA, and has a ribose sugar instead of deoxyribose.
Explanation:RNA contains the nitrogenous base uracil instead of thymine, which is found only in DNA. This means that during protein synthesis, adenine will always pair up with uracil in RNA, mirroring the pairing of adenine and thymine in DNA. Additionally, RNA includes the pentose sugar ribose, whereas DNA contains the pentose sugar deoxyribose, which has one less oxygen atom compared to ribose. The structural difference between uracil and thymine is that uracil is an unmethylated form of thymine, which is crucial for RNA's function in protein synthesis.
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You find two fossils. One is a very primitive organism and the other is a complex organism. Which of these two fossils do you think is the oldest?
Answer: B. The primitive on the left
Glycolysis and the citric acid cycle are similar in that they both produce ______
A nurse is caring for a client who is three hours post op from open abdominal surgery. during routine assessment, the nurse notes the previously stable client now appears anxious, apprehensive, and has a blood pressure of 90/56. what does the nurse consider is the most likely cause of the client's change in condition?
The presence of permafrost is a characteristic of which major biome?
Answer:
Tundra
Explanation:
Just did it on edg test.
2020
Classical conditioning takes place when a(n) ________ is continuously matched with a(n) ________.
Classical conditioning takes place when a CONDITIONED STIMULUS is continuously matched with an UNCONDITIONED STIMULUS.
It is a process of learning by combining two stimulus, one which has a neutral effect and the one which can produce a biological result. It was studied on dogs by Ivan Pavlov.
Neutral stimulus is the conditioned stimulus and the biological is the unconditioned one.
Scientists think deforestation is one cause of _____, because carbon dioxide increases when people burn trees to clear land.
The correct answer is greenhouse effect..
Scientist think deforestation is one cause of greenhouse effect because carbon dioxide increases when people burn trees to clear land.
Conversion of forests into agricultural cause which might lead to deforestation. For example, overpopulation, infrastructure expansion, livestock, and logging.
compare the photorespiration between Barley and Sugarcane? 4 marks 4 points,
the presence of gill-like slits in a human embryo is considered to be evidence for the
Out of the following given choices;
A. theory that fish and mammals have a common ancestry
B. theory that the first organisms on Earth were heterotrophs
C. close relationship between fish and mammalian reproductive patterns
D. close relationship between humans and annelids
The answer is A. Many embryos of the kingdom Animalia share similarities in the early stages depicting that they share a common ancestor. The gill slits is one example. They diverge in later stages to become Pharyngeal in the human embryo, while they differentiate into gills in fish.
A horse does 860 J of work in 420 seconds while pulling a wagon. What is the power output of the horse? Round your answer to the nearest whole number.
The power output of the horse is
W.
Answer:
Power output, P = 2 watts
Explanation:
It is given that,
Work done by a horse, W = 860 J
Time taken, t = 420 seconds
We need to find the power output of the horse. Power output is given by work done divided by total time taken i.e.
[tex]P=\dfrac{W}{t}[/tex]
[tex]P=\dfrac{860\ J}{420\ s}[/tex]
P = 2.04 watts
or
P = 2 watts
So, the power output of the horse is 2 watts. Hence, this is the required solution.
PLEASE SOMEONE HELP ME
A scientific paper that has passed through the peer review process is more respected than one that has not. Why might a scientist value a peer-reviewed paper?
A. The analysis of the experimental results is guaranteed to be entertaining.
B. The described experiment meets or exceeds the standards of good science.
C. The scientist who wrote the paper is likely to become a famous person.
D. The described materials are expected to become a good investment.
The correct answer is B. The described experiment meets or exceeds the standards of good science.
Explanation:
In science, it is common after research scientists publish information about the process and results in scientific papers or articles. Additionally, the credibility and reliability of this documents and of the research itself depend on multiple factors and one of this is whether the paper has been review by another expert in the field which called peer-reviewed paper. Indeed papers that have gone through the peer-review process are more credible and therefore more value by other scientists as in general terms this guarantees the results can be believed as each step in the research fits with the standards of good science because the scientists who reviewed the paper approve it. Therefore, the reason a scientist value a peer-reviewed paper is that the escribed experiment meets or exceeds the standards of good science.
Because the dna cannot leave the nucleus to get to the ribosomes, the genes for proteins must be transcribed into ______________ that can leave the nucleus.
The DNA in cells is transcribed into messenger RNA (mRNA), which leaves the nucleus and delivers the genetic code for specific proteins to the cytoplasm for protein synthesis. This process, called transcription, allows for proteins to be efficiently and properly synthesized in the cell.
Explanation:The DNA in cells cannot leave the nucleus to get to the ribosomes directly. Instead, the genes for proteins are transcribed into messenger RNA (mRNA) that can leave the nucleus. This mRNA is a single-stranded nucleic acid that delivers a copy of the specific gene's genetic code from the nucleus to the cytoplasm, where it interacts with ribosomes and other cellular equipment to manage protein synthesis.
During the process of transcription within the cell nucleus, mRNA molecules are produced, which are then modified and sent into the cytoplasm for translation. The transcript is decoded into a protein with the help of a ribosome and tRNA molecules. This system allows for the necessary proteins to be synthesized properly and at the right time, without having to expose the actual DNA.
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coastal communities often experience milder winters and cooler summers than further inland because?
a. the mist from the ocean spray makes the coastal winter much milder
b.oceans absorb heat more slowly, which has a cooling effect on land
c. they are always located at sea level, where temperatures are milder
d. oceans absorb heat more quickly, which has a cooling effect on land
neeeed help so bad please help,
Which is an example of electrical energy being converted or changed into light energy? A) the sun B) a light bulb C) a solar panel D) a glowstick at Halloween
Answer:it would b-light bulb
Explanation:
which two groups are the most similar in physical characteristics
A) Archaebacteria & Eukarya
B) Archae & Viruses
C) Archaea & Eubacteria
D) Eukarya & Eubacteria
Archaea & Eubacteria is the answer
Answer:
Ans A) Archaebacteria & Eukarya..
Explanation:
An area recently became prone to deforestation. Now there are few trees left in the vicinity. How would this change affect the cycles of Earth?
this dude....
C makes sense, but it may be wrong... apparently transpiration is how plant's make ground water evaporate and generate clouds... most common in rain forests. It seems counter intuitive, but without it the ground simply dries out due to regular evaporation and the sun...which would sap all of the moisture out of the ground.
Where is the radius located in reference to the ulna?
Which term best describes the type of farming that does not use pesticides, growth hormones, or other chemicals?
1. ecological
2. organic
3. subsistence
4. sustainable
Answer:
Sorry it took two years to answer... Organic.
Explanation:
When are homologous chromosome are paired
A. Prophase I
B. Metaphase I
C. Anaphase I
D. Telophase I
Please help me!!!!!!!!!!!!!!!!!!!!!!!!!!!!
(ᵔᴥᵔ) plz help me: The meltdown at the nuclear power plant in Chernobyl released radioactive particles and energy that can damage cells. This damage to cells can be prevented by all but which of these?
A)
wood
B)
lead
C)
thick concrete
D)
potassium iodide,
19. (03.06 HC)
Some individuals have a mutated recessive allele and a homozygous individual is resistant to HIV infection and AIDS. Some populations have a high frequency of the mutant allele. What inference can be made about the mutant allele? (1 point)
Heterozygous individuals must be genetically advantaged even if they are not resistant to HIV.
The mutated allele must have developed and been acquired by many people before exposure to the virus.
The mutated allele must not be inherited by offspring or the disease would be close to eradication.
Being homozygous is an advantage for the mutated allele, while being heterozygous is a genetic disadvantage.
20. (03.07 MC)
Some portion of the milk produced in the United States comes from cows treated with genetically manipulated hormones that increase a cow's milk production. This increased production helps farmers make a better return on their investment in each cow. What aspect of this biotechnology must be fully understood before the benefits can be justified? (1 point)
Its effect on the cost of production
Its effect on other animals in the dairy
Its effect on the offspring of the cow
Its effect on consumers of the milk
21. (03.07 HC)
What issues will society need to resolve regarding this developing biotechnology, such as recombinant DNA technology? (1 point)
The issues regarding the cost of these procedures for patients
The question of who gets to benefit from these technologies
The issues surrounding its lack of medical benefits
The question of the long-term effects on consumers and the targeted species
22. (03.08 MC)
Marissa and Sean are in the process of adopting a baby. One of the documents the adoption agency provides is a full medical history of the birth mother. Why would the birth father's medical history also be important? (1 point)
The father has greater impact on the health of the baby than the mother.
The father's history will be important only when the child also becomes a parent.
The father's medical problems will always be expressed in the child.
The father's history will suggest potential medical problems in the baby.
23. (03.08 MC)
Paul's father and paternal grandfather both contracted but survived prostate cancer with treatment. Which answer best explains what this means for Paul? (1 point)
Paul should know he has a higher risk of prostate cancer and take preventative steps.
Paul should not worry about this history as both survived the cancer.
Paul should have his prostate removed as soon as possible.
Paul should live a healthy lifestyle and not worry about cancer at all.
24. (03.08 MC)
Which of the following would most severely affect a human population? (1 point)
A high degree of genetic similarity among people
A high degree of illegal drug use among young adults
A high number of smokers in a community
A high rate of mental disorders
25. (03.08 HC)
Meredith's office had a large group of people out sick at the same time with the flu. Which of the following is the most likely cause of the mass illness? (1 point)
Lack of cleanliness in the office kitchen
Mutation in the type of flu virus, making it resistant
Germs being spread by person-to-person contact
Inadequate ventilation system in the office
Answer:
19. The mutated allele must have developed and been acquired by many people before exposure to the virus.
20.
21. The issues surrounding its lack of medical benefits
22.
23. Paul should know he has a higher risk of prostate cancer and take preventative steps.
24. A high degree of genetic similarity among people
25. Germs being spread by person-to-person contact
Explanation:
Many diseases, including general diseases, require the general prevention methods. These include diagnostics, prevention, and monitoring.
In two or more complete sentences describe how a dam placed in a river can act as both a constructive and destructive force.
Answer:
Dams are constructed over the narrow valleys and it acts like a barrier that obstructs the water from the flow. There are both advantages as well as disadvantages in constructing a dam.
Some of the constructive force or advantages of dams are as follows-
1) It generates electricity .
2) It is often used for irrigation and industrial purposes.
3) it is used for farming purposes in water such as raising as well as harvesting of fishes and other aquatic plants.
Some disadvantages are-
1) It degrades water quality.
2) Aquatic organisms are affected thereby harming the ecosystem.
3) It obstructs the flow of water.
4) Failure of a dam causes flood.
The dispersal(spreading of) of ink in a beaker of water is an example of
What are the steps (in the correct order) that link a change in the base sequence of a gene to a change in the phenotype of an organism like a mouse or a human? see section 16.2 (page 339) ?
The answer is DNA to RNA to protein. The change in DNA sequence will be reflected (through complementary base pairing) on the formed Messenger RNA during transcription. Subsequently, during translation of the mRNA to protein (by ribosomes), the amino acid sequence will change due to changes in the codons. Proteins, as you may know, are what determines the phenotype of organisms while DNA determines the genotype of the same organism.
HELP ASAP!!!
The distance from the sun to Earth is one astronomical unit (AU).
True
False
Extracellular pathogens such as viruses and bacteria in body fluids are attacked by _____. view available hint(s)
The method by which lymph is pushed through the lymph vessels is via
Lymph is moved through lymph vessels by skeletal muscle contractions, varying external pressures, and one-way valves that prevent backflow, as the lymphatic system lacks a central pump like the heart.
The method by which lymph is pushed through the lymph vessels is via a combination of movements caused by skeletal muscle contractions, external pressures, and the one-way valves present in the lymphatic system. Blood pressure at the capillaries initially forces plasma into the lymph spaces, where it becomes lymph and exerts pressure on the walls of the lymph vessels. This lymph then moves through the network of lymphatic vessels primarily due to the contraction of skeletal muscles around these vessels as the body moves, and the one-way valves that prevent backflow of lymph, ensuring it flows in the correct direction towards the heart.
Lymphatic capillaries absorb this fluid from the tissues and transport it through larger lymphatic vessels to eventually reach the two large lymphatic ducts in the upper chest. From there, lymph enters the circulatory system by flowing into the subclavian veins. The lymphatic circulatory system does not have a central pump like the heart in the cardiovascular system, hence the reliance on muscle contractions and movement to propel lymph through the body.
The letters represent diffrent types of what? Thank uu!
Answer:
option B
Explanation:
You disrupt all hydrogen bonds in a protein. what level of structure will be preserved?
What are some good safety tips for performing active aerobics and active recreation?