It is believed that RNA evolved earlier than DNA, but it is still not clear. Therefore, this topic interests scientists.
What is nucleic acid?Nucleic acid is a macromolecule that is a polymer of nucleotide. It is made up of pentose sugar, phosphate group, and nitrogenous bases (purines and pyrimidines) which include adenine, guanine, thymine, uracil, and cytosine.
It is of two types, DNA (deoxyribose nucleic acid) and RNA (ribose nucleic acid). They play a very important role in heredity and protein synthesis in all living organisms. It is found in the cell.
DNA is a double helix, while RNA is a single helical structure. DNA is converted into RNA through the process of transcription and RNA is converted into DNA by reverse transcription. It is believed that RNA evolved earlier than DNA, but it is still not clear. Therefore, this topic interests scientists.
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What is the branch of earth science that puts past events on earth in order by time?
A) geology
B) geography
C) ecology
D) chronology
Answer:
(c) ecology
Explanation:
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4.The crabs that live in the aquatic biome pictured depend on living in shallow water that has a temperature no greater than 60 degrees F. If climate change causes an increase of that water’s temperature to 62 degrees F, what will likely happen to the dolphins in that biome, and why?
Answer:
The dolphins population may diminish a little.
Explanation:
Crabs are one of the many things dolphins eat, and, as the prompt suggest, they cannot live in temperature greater than 60 degrees F. If climate change makes the temperature 62 degrees F, the crab population will all die. However, note that dolphins do not only eat crabs, as they have other food sources. However, crabs are a major population, so we can see a disruption in the food web, with there being less dolphins than usual.
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Lots Of points 30!!!!!!!!!!!
Answer: i feel it should be c
Explanation:
Answer: i think its c or d
Use the drop-down menus to complete each statement.
The___controls land for oil and gas development.
The___ensures that federal wildlife laws are followed.
The___protects ecosystems and supervises public access to forests.
The___regulates land used for mining, grazing, recreation, and wilderness.
The___manages monuments, historic sites, seashores, and more.
Answer:
the answers are
1.bureau of Land management
2.Us Fish and wildlife Service
3.Us forest Service
bureau of Land management
5. National park service
Crossing-over can happen at any location on homologous chromosomes. The farther apart two genes are, the more likely that crossing-over would separate them.
On these chromosomes, which pair of genes would be most likely to be separated by crossing-over: A and B, or A and C? Why?
Answer:
The answer is C I believe. Chromosomes usually make a pattern and thats the points were it would make a pattern.
~Paige~Crossing-over chromosomes.
The crossing of the chromosomes is the swap or the exchange of genetic materials. It takes place in the germline, at the formation of the egg. This is also called meiosis. It aligns with DNA sequencing. The pried chromosomes cross over the other.
Thus the answer is they make a pattern that points in the pattern.
This shows the crossing happens at the homologous chromosome. The farthest apart two genes the most likely they cross each other that would separate them. Thus the option C is correct. They cross at the end., hence is a process called recombination.Learn more about the chromosomes.
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What Niche does rabbits occupy in its ecosystem
What are asexual spores
Answer:
Asexual spores comes with both the male and female reproductive parts, in which one part of the spore produces the sperm (male), which mates with the egg (female), which is produced in a different part of the spore. It is asexual, for the beast or plant only needs itself (not another of the same family) to reproduce.
Question 3 of 10
What is a B cell?
the extra cell in your blood cells
Human have cut and frayed the woven tapestry of Earth's biodiversity. List and describe three ways.
Answer:
1. Building into the ecosystem.
2. Hunting animals for sport.
3. Increasing carbon emissions.
Explanation:
All of these are bad for Earth's biodiversity. Building into the ecosystem destroys habitats for animals, which causes the population of that species to decline. Hunting animals for sport decreases populations as well, and doesn't keep the environment in check. Increasing carbon emissions heat up the Earth, leading to colder climates warming up. This, in turn, destroys the ecosystem as well.
Anthropogenic activities and continued neglect of the ecosystem has lead to various deleterious effect on biodiversity.
What is biodiversity?It means the presence of several species of animals, microorganisms, and plants in a habitat.
What is the rivet popper hypothesis?According to this theory, the ecosystem is kept together by thousands of species, just as thousands of rivets hold together an airplane.
It may not affect flight safety at first if rivets are removed but over time, the airframe becomes dangerously weak. Similarly, species extinction in the ecosystem impairs the ecosystem's ability to function properly.
What are the three ways in which humans have affected biodiversity?Habitat loss and fragmentation: It destroys the natural habitat and niche of organisms and leads to their decline
overexploitation: It leads to depletion of the natural resources and increases the risk of extinction of endangered species.
Pollution: It destroys the quality of the habitat of organisms and creates a toxic environment which leads to the decline of species.
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What would be the most likely effect if several species of carnivores are removed from an ecosystem?
A. a decrease in community stability
B. an increase in species diversity
C. an increase in plant life
D. a decrease in the number of natural disasters
Answer:
A species of bacteria is antibiotic resistant. Out of 300 bacteria, 210 reproduce with this mutation. What percentage of the resistant bacteria successfully reproduced? answer in percent
Explanation:
Which activity would help decrease the greatest carbon-releasing activity in US homes? limiting time in hot showers wearing layers of clothing turning off lights when leaving a room unplugging electronics when not in use
Answer:
"Wearing Layers of Clothing" will help decrease the greatest carbon-releasing activity in US homes.
Answer:
Wearing layers of clothing
Explanation:
The direct manipulation of genetic material in order to alter traits:
A) artificial selection
B) genetic engineering
C) genes
D) selective breeding
E) trait
Answer:
B) genetic engineering
Which organelle supplies the cell with energy?
Which of these are effects of environmental change on individual organisms?
which of these are effects of environmental change on individual organismS
ANSWER: death, loss of habitat, impacts on growth and development, and a decrease in resources.
How is the virus reproduced during the lysogenic cycle?
A. through reproduction of the host cell
B. by using viral enzymes to reproduce viral DNA
C. by using the cell's enzymes to reproduce viral DNA
D. by breaking the cell open and releasing new viruses
Answer:
a through reproduction of the host cell
Explanation:
In a desert ecosystem, coyotes and rattlesnakes both eat the same type of mouse as a primary part of their diets. Recently, coyotes have been hunted and killed by people, decreasing the overall coyote population. How will this most likely affect the rattlesnake population over time?
Answer:
Answer: It will increase because coyotes are the competition.
Explanation:
An ecological niche can be defined as the functional role which an organism performs in the ecosystem in order to sustain it's life. The functional roles include how an organism obtains it's food, type of food eaten by the organism, type of habitat chosen by the organism and type of breeding season used by the organism.
In the given situation, both coyotes and rattlesnakes are dependent upon the same ecological niche that is they are dependent upon mouse as a primary part of their diets. As, both coyotes and rattlesnakes are dependent upon the same diet there may exist the competition between the two species. But it is mentioned that the coyote population is decreasing therefore the population of rattlesnake will most likely increase as the competition for the same diet decreased.
Answer:
D
Explanation:
When living cells break down molecules of food, what happens to the energy
Answer:
release energy,form molecules of ATP
What energy does an apple have
Answer:
Chemical
Explanation:
An apple has energy stored within fructose and glucose inside of it, which is a form of chemical energy. A typical apple has about 90 kilo calories of energy inside of it, which is enough to raise the temperature of 90 liters of water by 1 degree Celsius. Hope this helps!
Which is the best example of competition in a forest ecosystem?
A colony of bees builds and protects a hive together.
Ticks live and feed on deer.
Wolves hunt and eat rabbits.
Blue jays and finches nest in the same oak trees.
Answer:
Your anwser is, Blue Jays and Finches nest in the same Oak Trees. Give the other person credit too, please.
Explanation:
Identify characteristics of fungi
Answer:
Characteristics of Fungi. Following are the important characteristics of fungi: Fungi are eukaryotic, non-vascular, non-motile and heterotrophic organisms. They may be unicellular or filamentous. They reproduce by means of spores. Fungi exhibit the phenomenon of alternation of generation.
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Which of the following are visual models to represent the flow of energy between trophic levels in an ecosystem? (Choose all that apply)
A) food web
B) food pyramid
C) energy pyramid
D) food chain
Answer:
Energy Pyramid, Food Web, and Food Chain
Answer:
A) food web
C) energy pyramid
D) food chain
Explanation:
Scientists use several types of visual models to represent the flow of energy between trophic levels in an ecosystem.
Read the following paragraph from the section
"Processed Foods Can Kill off Good Bacteria.
Our bacteria also protect us from a
wide range of illnesses But recently,
scientists say that there has been an
increase in certain illnesses in the
population. The number of people
who are overweight has increased,
Allergies, asthma, arthritis and heart
disease have also increased,
Scientists think that the increase in
these illnesses means that
something is wrong with the
bacterial populations in our guts.
Which of the following is an adcurate
explanation of what this paragraph means?
Answer:
The high intake of processed food have increased our intake of harmful bacteria which resulted in increase of allergies asthma arthiris and heart attacks....
Identify Earth’s six global wind belts.
They are labelled
polar easterlies westerlies then the trade winds
Explain how embryology can be used as evidence for evolution
Answer:
the study of the development of the anatomy of an organism to its adult form, provides evidence for evolution as embryo formation in widely-divergent groups of organisms tends to be conserved. ... Another form of evidence of evolution is the convergence of form in organisms that share similar environments.
HOPE IT HELPS : D
Explanation:
What type of mutation has occurred?
Below are two sequences of a segment of DNA.
Normal sequence CAT TAC ACC
Mutated sequence CTT TAC ACC
Deletion mutation
Nonsense mutation
Insertion mutation
Substitution mutation
Read "Charting the Pathways of Evolution" and answer the questions that follow.Explain the main idea of the article in detail.
Answer:
Organisms’ characteristics can be used to determine the evolutionary relationships among them. The more closely related two organisms, the more characteristics they have in common. These shared characteristics, along with the fossil record, indicate that organisms have evolved over time from a common ancestor.
Explanation:
Sample Response
Meiosis produces four sex cells with half the number of chromosomes. True or False
Answer:
True
Explanation:
Meiosis is a type of cell division that results in four daughter cells each with half the number of chromosomes of the parent cell.
What is the origin of the Slate breed?
O
United States
O Mexico
O Asia
O Germany
Answer:
2. Mexico
Explanation:
"The blue slate turkey is a rare, heritage turkey; turkeys were first domesticated in Mexico over 2000 years ago."
P.S Only source I could find.
Provide a summary of Professor Steve Jones’ findings concerning how Natural Selection may be working today in humans.
Answer:
John Stephen Jones states that in evolution it is necessary to have into account three factors: natural selection, mutation, and random variation.
Explanation:
These three mechanisms influence evolution and they are responsible for generating phenotypic diversity that is observed in humans.
I recommend to read his article (chapter book):
Jones, JS. (2012). Is Human Evolution Over?. In Evolution 2.0 (pp. 167-176). Springer, Berlin, Heidelberg.
Help please! I will give brainly! The prefix aqua- refers to ""water."" The verb culture means ""to foster the growth of living things."" Use this information to define aquaculture.
Answer: im not sure but i think it means to grow plant because it is talking the key words are to foster the growth of living things.
i hope it is right if not sorry!!!!!!!!!!!!!!!!!!!!!
Answer:
Aquaculture means to foster organisms (for the most part fish) that live in water.
Explanation:
After reading Holt Enviromental Science's Food and Agricultural Section: Animals and Agriculture passage, you can define aquaculture. In the passage it reads "fish farms generally consist of many individual ponds that each contain fish at a specific stage of development." The fish grow until they are matured and then "they are harvested."