Answer:
He will use a radioactive element with a long half life of greater than 1 billion years
Explanation:
Rocks are an aggregation of solid mass which is usually rich in minerals. The age of rocks is established using radiometric dating method.
According to Oxford Dictionary, radiometric dating is "a method of dating geological specimens by determining the relative proportions of particular radioactive isotopes present in a sample."
The age of rocks can only be ascertained using isotopes that have very long half lives because many of these rocks are very old (aged billions of years) hence their age can only be determined using elements that has a half life greater than 1 billion years.
Nitrogen is present in the environment in chemical forms like
A) Organic nitrogen - containing compounds
B) Ammonium ions
C) Nitrate
D) All of the above
Describe how amino acids are categorized by their chemical properties. Explain how a change in the amino acid sequence of the FXR1 protein could decrease the ability of the protein to bind to RNA .
Answer:
The nature of amino acids can vary they can be acidic, alkaline, or neutral based on the functional group attached to their side-chain. The functional group of the amino acids determines the property of the hydro loving or phobic nature of particular amino acids. Interaction of different biomolecules depends on their affinities with one another such as hydrogen bonds, ionic bonds, van der Waals interaction based on structural and fundamental unit or monomer of the biomolecule.
Based on the given explanation, we can say that if there is a modification in the sequence of the building block amino acid of the FXR1 protein, might lead to a decrease in affinity to bind to the RNA by changing in the binding domain of this protein. There might be a complete structural change such that it can no longer interact with RNA.
Amino acids are grouped on the basis of their side chains.
Amino acids are categorized on the basis of their side chain attachment. All the amino acids has a specific side chain which is known as an R group. This R group is also attached to the α carbon. The R groups consist of shapes, sizes, charges, and reactivities. This allows all amino acids to be grouped or categorized on the basis of their chemical properties of their side chains.
If there is a change occur in the sequence of the building block amino acid of the FXR1 protein, it might lead to a decrease of binding to the RNA. There might be a complete change in the structure which leads no more attachment with RNA so we can conclude that amino acids are grouped on the basis of their side chains.
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In your own words explain how you think that DNA, mutation, genotype, phenotype, and natural selection interconnect to cause evolution
Answer: According to sources, the most probable answer to this query is that evolution happens because when life came it sought for survival. Now, this is through mutation which causes random DNA sequences leading to genotypic and phenotypic changes. Natural selection as relation to adapting to the selection forces of the environment. And when these factors is added by the niche and other large case scenario to cause major anatomical changes, speciation comes through. And that, the process of evolution. And how it is a mechanism and an intermediate interaction with the environment.
Explanation:
What is the history of Gene Therapy?
Answer:
The concepts of gene therapy arose initially during the 1960s and early 1970s whilst the development of genetically marked cells lines and the clarification of mechanisms of cell transformation by the papaovaviruses polyoma and SV40 was in progress.
Explanation:
Answer:
The concept of gene therapy arose during the 1960s and 1970s and is still in its infancy, meaning there is a paucity of reliable, long-term data on the safety and efficacy of this therapy.
Explanation:
i have to give credit to...
Dr. Ananya Mandal, MD
and here is the website https://www.news-medical.net/health/Gene-Therapy-History.aspx
mkdoyle27 had my answer so i put something else her answer came from... https://pubmed.ncbi.nlm.nih.gov/1303270/#:~:text=The%20concepts%20of%20gene%20therapy,and%20SV40%20was%20in%20progress.
________ thousands of tiny projections that add even more surface area to villi
Answer:
Each villus, in turn, has thousands of even smaller projections called microvilli (singular: microvillus).
Explanation:
The villi contain capillaries, which are tiny blood vessels. Nutrients are absorbed into these capillaries across the surfaces of the villi and microvilli. Because there are millions of these tiny projections, they greatly increase the surface area for absorption.
What does the "S" in S phase stand for? What occurs in S phase?
Answer:
Synthesis Phase
Explanation:
It is the phase of the cell cycle in which DNA is replicated.
Which of the following would be made entirely of
nonrenewable resources?
A. A bedspread
B. Olive oil
C. A car engine
D. A textbook
SUBMIT
Answer:
C. A car engine
Explanation:
Renewable sources of energies are those who can grow again, such as trees and plants, or that can always reappear, such as wind and solar energy. Nonrenewable energy, however, cannot be regenerated, like oil and coal, or are mined minerals.
The fossil record provides evidence that
A. Fossils cannot be dated.
B. All species were formed during Earth’s formation and have changed little since then.
C. The fossilized species have no connection to today’s species
D. Older species have rise to more recent species.
Answer:
D
Explanation:
The fossil record provide evidence that Older species have rise to more recent species
Can someone tell me how sedimentary rocks usually form ? ( please one simple sentence)
Answer: many various sediments carried over time all compile to create a new rocks
Explanation:
Hope this helps
What happens to the digested food? The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream.
Explanation:
The small intestine absorbs most of the nutrients in your food, and your circulatory system passes them on to other parts of your body to store or use. Special cells help absorbed nutrients cross the intestinal lining into your bloodstream
pls help ASAP no link
Answer:
atmosphere, underground, glaciers , Oceans.
water that falls from the clouds towards the ground like rain or snow or sleet
Transpiration is the process of water movement through a plant and its evaporation from aerial parts, such as leaves, stems and flowers.
Evapotranspiration is the sum of water evaporation and transpiration from a surface area to the atmosphere.
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please help me with this question
Answer: C
Explanation:
Which of the following is the correct order of the categories in the modern system of classification?
Answer: is c
Explanation:
What is the trait called that "showed" up or was "expressed" in all of the offspring?
A. Offspring
B. Heredity
C. Dominant
D. Recessive
Answer:
C. Dominant trait
Read the following selection from the section
"Another Threat To Sea Otters."
It reveals how this view of the food
chain, from the top to the bottom.
provides us with an illuminating new
way of looking at nature and its tightly
interwoven components.
ер
Which two words would BEST replace
illuminating" and "components in the selection above?
A. inspiring; traits
B. captivating; aspects
C. convincing; segments
D. enlightening: elements
Answer:
D
Explanation:
Illuminating gives the reader the idea that some new information has been brought to attention, but that is not the case in this text. Enlighten means to give some a better, deeper knowledge on something, which better fits here. Component means part of an element, to narrow compared to elements incontext.
Your best answer here would be D, enlightening, and elements.
Help due soon I’ll give brainliest
Over half of the people in Cape Canaveral, Florida are
over the age of fifty. How is
this related to Florida's role in space research?
A)
The Kennedy Space Center only hires people who are over fifty years old.
B)
The Cape Canaveral communities offer free medical care for senior citizens.
Cape Canaveral has laws only allowing senior citizens to live in the
community
An entire generation of space-industry workers retired in the Space Coast
area.
D)
Answer:
B
Explanation:
Describe the mutation that confers resistance to infection to a major strain of HIV.
Answer:
BIKTARVY® is indicated as a complete regimen for the treatment of HIV-1 infection in adult and pediatric patients weighing ≥25 kg who have no antiretroviral (ARV) treatment history or to replace the current ARV regimen in those who are virologically suppressed (HIV-1 RNA <50 copies per mL) on a stable ARV regimen with no history of treatment failure and no known resistance to any component of BIKTARVY.
The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________. The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the ________. distal convoluted tubule nephron loop glomerular filtration membrane collecting duct
Answer:
The correct answer is nephron loop. The mechanism that establishes the medullary osmotic gradient depends most on the permeability properties of the nephron loop.
Explanation:
The nephron loop is the portion of the nephron that follows the proximal convoluted tubule. It is located mainly in the renal medulla. Water moves by osmosis thanks to an osmotic gradient, in other words, it moves from a space with a lower concentration of solutes (hypotonic solution) to a space with a higher concentration of solutes (hypertonic solution) to try to dissolve it. Among the functions of the nephron loop is the creation of the medullary osmotic gradient by the countercurrent multiplier mechanism. Osmolarity is an intensive property that requires one or more "sources" of osmoles, capable of creating a gradient. In the nephron loop there are several sources of this type: a) the system that transports NaCl in the thick portion of the ascending limb b) the passive Na + outflow from the thin portion of the ascending limb c) the Na + outflow and of urea from the collector.
What 3 structures do plant cells have that animal cells do not have?
Answer:
A cell wall, chloroplasts, plastids, (and in some cases vacuoles but they are sometimes present in both)
Explanation:
Anand I was asking to prepare slogans to participate in a rally to create awareness on conservation of soil. help him and write the slogans
Answer:
''Protect the soil is to protect life on earth'' and ''Protect the soil to ensure human survival'' .
Explanation:
''Protect the soil is to protect life on earth'' and ''Protect the soil to ensure human survival'' are the slogans to create awareness on conservation of soil. In these slogans, a very important message is given to the people is that soil is important for the survival of humans and other creatures on this planet because this soil provides food which is the main source of survival. If there is no soil , no food will be produced which leads to the death and extinction of all humans.
The bacteria lactobacillus acidophilus are frequently used in the production of yogurt. there
Explanation:
The bacteria Lactobacillus acidophilus are frequently used in the production of yogurt. These bacteria use lactic acid fermentation when oxygen is not available.
Mountain building happens as a result of –
Question 3 options:
Two continental plates converging
Two oceanic plates converging
Two continental plates transforming
Which of the following describes a scenario that would result in the phenotypic change shown in the graph?
A) A fish that has mouth parts adapted to eat moderately sized prey is introduced into a lake in which there are only large and small prey.
B) A population of mice live on the ground and in short trees. An invasive, tree-dwelling snake that preys on the mice is introduced into the area.
C) Climate change-induced warming of arctic tundra reduces average snow cover that lighter-colored arctic
foxes rely on for camouflage. Darker-colored arctic foxes are better suited to the exposed moss and grass habitat.
D) House sparrows that lay smaller-than-average clutches of eggs produce fewer viable offspring, while larger-than-average clutches of eggs result in malnourished chicks that have a higher mortality.
Answer:
C) Climate change-induced warming of arctic tundra reduces average snow cover that lighter-colored arctic foxes rely on for camouflage. Darker-colored arctic foxes are better suited to the exposed moss and grass habitat.
The graph shows how 'climate change reduces snow cover that lighter-colored arctic foxes rely on for camouflage, whereas darker arctic foxes are better suited'.
What is adaptation?Adaptation refers to the emergence of phenotypic characteristics to face environmental factors.
Adaptations are evolutionary responses to challenging environmental conditions.Adaptations are fundamental during environmental change (e.g., (climate change).In conclusion, the graph shows how 'climate change reduces snow cover that lighter-colored arctic foxes rely on for camouflage, whereas darker arctic foxes are better suited'.
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20. A group of animals with common traits that can mate and produce fertile young is called a
a. family
c. class
b. species
d. phylum
Which of these is an example of ACTIVE immunity?
A.) A baby receiving breast milk from a well vaccinated adult with a strong immune system.
B.) A person receiving a Hepatitis B vaccine prior to entering the healthcare field.
C.) A person receiving a tetanus shot after cutting themselves on a rusty metal nail.
D.) A person receiving an antivenom after a snake bite.
Answer:
I think the option b is correct
Which statement correctly describes scientific knowledge!
A. It changes from place to place.
B. It is based on opinions.
C.It varies from person to person.
D. It is based on facts.
(No files)
Answer:
D: It is based on facts.
Explanation:
The reason is because science is based off of data and analsys which
Mention the three types of collisions involved in convergent boundaries.
ANSWER :
Oceanic-oceanic boundariesOceanic-continental boundariesContinental-continental boundariesHope it helps ya...!!♡
Acid rain can have a pH between 1.5 and 5.0. The effect of acid rain on the environment depends on
me pH of the rain and the characteristics of the environment. It appears that acid rain has a negative effect
un plants. The scale below shows the pH of normal rain.
Normal
rain
1 2 3 4 5 6 7 8 9 1011121314
PH Scalo
Provide the information requested In questions 41-43 that should be included in a research plan to test the
effect of
pH on the early growth of bean plants in the laboratory.
Q: State a hypothesis, identify the independent variable and state 2 factors that should be kept constant
Answer:
what effects do the pH has on different conditions of weather
Explanation:
ketp constant is the temperature....independent variable is time
Acid rain can have a pH between 1.5 and 5.0. The effect of acid rain on the environment depends on the pH of the rain and the characteristics of the environment. It appears that acid rain has a negative effect on plants.
Can acid rain hurt you?Acid rain does not directly harm the human body, but the resulting sulfur dioxide can cause health problems. In particular, sulfur dioxide particles in the air can promote chronic lung problems such as asthma and bronchitis.
Acid rain or acid deposit is a broad term that includes all forms of precipitation, including acidic components such as sulfuric acid and nitric acid, falling from the atmosphere into the ground in a moist or dry form. This can be rain, snow, fog, hail, and even acidic dust.
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What do the circled letters on the outside of the Punnett square in the attached figure represent?
Answer:
The circled letters represent the genotypes of the two parents
The top 2 letters (A a) is the genotype of one of the parents
The 2 letters on the far left (AA) is the genotype of the other parent
I will give brain to the correct answer!
Which statement best explains how sewage systems help fight the spread of disease?
A. They carry antibiotics that kill pathogens
B. They carry human waste to treatment facilities away from cities
C. They kill animals that spread pathogenic bacteria
D. They add chlorine to drinking water before it is transported to homes.
Explanation:
As I think option D is the correct one.
Answer:
b
Explanation:
a p e x