Answer:
Species that has been studied in great detail and is used to understand specific phenomena in biology are Model organism .
Explanation:
MODEL ORGANISM - A model organism (often abbreviated to model) is a non-human species that has been extensively studied in order to better understand specific biological processes, in the hope that observations made in the model organism can lead to new understanding of the workings of other organisms. When human experimentation is either impossible or immoral, model organisms are commonly used to study human disease. The shared descent of all living species, as well as the survival of metabolic and developmental processes and genetic material during evolution, make this strategy possible.
Although studying model organisms can be beneficial, caution should be exercised when extrapolating results from one organism to another.
Viruses, as well as model organisms from all three realms of life, are included. Escherichia coli (E. coli) is the most widely studied prokaryotic model organism, having been studied for more than 60 years.
It's a common gram-negative gut bacterium that can be easily and cheaply grown and cultured in a laboratory environment. It is the most commonly used organism in molecular genetics, as well as an important species in biotechnology and microbiology, where it has acted as the host organism for most recombinant DNA research.
Hence , the answer is model organism .
Answer each question, using it as an opportunity to illustrate the depth of your knowledge in this area.
1. One of the fundamental controls which ecosystems exert over individual species is limits on population size. This is done by a combination of predatory, competitive, parasitic and mutualistic relationships within the ecosystem. Never the less, the human population has increased well beyond what is healthy for those systems. How did we manage to grow beyond these limitations?
2. Natural variations in weather patterns have effects on certain populations. A warm damp spring for example, is ideal for small rodent species and certain insects, who benefit from the lush vegetation produced by this pattern. As a result, their populations swell to high levels. In the end however, this doesn't result in population growth at the higher tropic levels. You don't end up with more predators, just fatter predators. What limits the ability of the higher tropic levels to grow in response to the increased availability of food?
3. An unfortunate series of events finds you stranded on a remote uninhabited south Pacific island, with little chance of being rescued. It is a modest-sized island with adequate resources to support you, if you are careful to minimize your impact on it. You know that inserting yourself into this ecosystem will almost certainly mean the loss of members in some populations, so your goal is to minimize your impact on the overall biodiversity of the system. With this in mind, from which tropic level(s) should you obtain your food?
Answer:
1. Humans are an “invasive species” because human populations have eliminated many ecological relationships, dramatically changing the dynamic of their ecosystems
2. continued loss of energy due to metabolic activities
3. lower trophic levels
Explanation:
1. An invasive species is any organism that is not native to an ecosystem and may negatively alter its new environment. Invasive species don't interact with native species when they are introduced into an ecosystem (for example, invasive species usually don't have any natural predators). Humans are an 'invasive species' that occupy a wide range of habitats and whose presence has caused the extinction of many native plants and animals. Human populations have drastically reduced the biodiversity of different ecosystems by competing with native species for limited resources, and we also have altered their habitats (global human population growth is also due to medicine and farming techniques, reducing hunger and diseases). In this regard, it is important to highlight that the human population can also grow in an ecologically sustainable manner by taking care of the ecosystems we live in.
2. Animals (predators) are consumers, thereby they depend on lower trophic levels for their food supply. The Second Law of Thermodynamics indicates that the continual loss of energy due to metabolic activities at lower trophic levels leads to a decrease in the amount of available energy at higher trophic levels. In consequence, the population size decreases at higher levels due to the amount of energy available from one lower level to the next higher level has to decrease when it is used for metabolic activities (i.e., growth, development, etc).
3. In the food chain, the primary producers are found at the lower trophic level (e.g., plants). Primary producers are followed by consumers (e.g., herbivores), they are followed by secondary consumers (i.e., carnivores that eat herbivores), and so on. When an invasive species at higher trophic levels is introduced into a new ecosystem (in this case, human species), it is imperative to preserve the biodiversity (and consequently also the productivity) at lower trophic levels because they are fundamental for the survival of higher trophic levels (i.e., consumers).
Why mouse is called direct input device ?
Answer:
because you insert it manually and directly with a cable.
pls mark as brainliest lol
Answer:
A mouse is called direct input device because it is moved by the human/robot user, inputting the signal on where the cursor should go and what actions the cursor does.It also allows you to input and send data to the computer.
.
Which would be considered an ecosystem?
A
a colony of bacteria
B
biotic factors in a forest
с
populations of zebras and lions
D
living and nonliving things in a pond
Answer:
A colony of ants is a species, C is only animals and only the biotic factors it is D living and nonliving things in a pond
Explanation:
What happens in a warm front?
A. A warm air mass becomes a cold air mass as it moves.
B. A warm air mass catches up to a moving cold air mass, sliding
over it.
C. A cold air mass comes in under a warm air mass.
D. A warm air mass collides with a stationary cold air mass, and
slides under it.
Answer:
A warm front forms when a warm air mass pushes into a cooler air mass, shown in the image to the right (A). Warm fronts often bring stormy weather as the warm air mass at the surface rises above the cool air mass, making clouds and storms. ... As the front passes over an area, the clouds become lower, and rain is likely
Assume that Brown (B) hair is dominant over blond (b) hair and that oval shaped eyes (O) were dominate over round (o) eyes. Complete a Punnett square showing a cross between a mother who was heterozygous for both traits and a father who also was heterozygous for both traits. Based on Mendel’s work what could you predict about this cross? What percent chance do these parents have that the child will be blond with oval shaped eyes? What percent chance do the parents have that the child will have brown hair with oval eyes? What percent chance do the parents have that the child will have blond hair with round eyes?
Answer: 25%
Explanation:
So basically, you draw two Punnett Squares, one for each of the different traits. Since both parents are heterozygous, meaning they have a combination of traits, you would label the four sides of the square B, b, B, and b. Same thing with the eye shape trait. Label the sides O, o, O, and o. Then, you plot it like in the picture I provided. When the B and the B match up, label it BB. When the B and the b match up, label it Bb, etc. Then, since your chances of getting blonde hair (bb) is 1 in 4 (4 combinations total), the percentage of getting blonde hair is 25%. Same thing for getting round eyes, just repeat the process. Now that you have all your squares filled, you can see that your chances of getting both blonde hair and round eyes is 2 in 8, which simplifies to 1 in 4, which is equal to 25%
which of the following is a good effect soil erosion
A. clogging of irrigation
B. decrease of food production
C. deposition of mine tailings
D. shaping of landforms
Answer:
i think shaping of landform is the good effect of soil erosion
A gene variation that is masked in the presence of dominant alleles.
Answer:
Some genes mask the expression of other genes just as a fully dominant allele masks the expression of its recessive counterpart. A gene that masks the phenotypic effect of another gene is called an epistatic gene; the gene it subordinates is the hypostatic gene.
Explanation:
Describe at least two costs and two benefits of wind farms. !!!! ASAP plzz
Many factories release carbon dioxide directly into to atmosphere. The carbon dioxide would be considered an)
A) primary pollutant
B) placer deposit
C) invasive species
D) secondary pollutant
E) scrubber
Rapid cell proliferation can result from:____.
a. a cell ignoring a negative growth regulator.
b. contact inhibition.
c. a mutation inhibiting the action of a positive growth regulator.
d. the surgical removal of a benign polyp.
Answer:
a. a cell ignoring a negative growth regulator.
Explanation:
Hope it helps :)
Directions: Select ALL the correct answers
All living things contain carbon. Which of the following statements are true about carbon atoms?
A single molecule of some compounds can contain thousands of carbon atoms.
Each carbon atom can form single bonds with up to four other carbon atoms,
Each carbon atom can form double bonds with up to two other carbon atoms.
0 0
Carbon atoms can join together to form chains or rings,
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Submit
What are the potential hazards relating to materials handling injuries?
How do lungs help cells in the body meet their needs?
A. They produce oxygen for the body.
B. They bring oxygen from air into the body.
O c. They transform oxygen from the body into carbon dioxide.
D. They release oxygen fromod and send it through the body.
What level of organization is formed when many cells come together ?
Answer: A (Tissue)
Explanation:
Cells are the simplest level of organization. Many cells working together form tissue. The cells involved are specialized to cooperate with each other to accomplish one common goal. There are many different types of tissue in both plants and animals. When there are layers of tissue working together, they form an organ.
Hope This Helps!
Answer:
Its tissue
Explanation:
when it comes to the levels of organization cells come first the tissue
True or false Jesse and Ray have decided to have sexual intercourse. Ray
has been with one other partner prior to Jesse. They plan on using a
condom to protect against any STls. Jesse, who has never had sex before,
does not need to worry about getting an STI since they will be using a
condom.
Answer:
False.
Explanation:
There could be rips, holes, or the condom may fail. Condoms only HELPS lower your chances for STI's/STD's.
Which interaction involves only one of Earth's spheres?
Answer:
Energy stored in plants is transferred to humans and animals that eat them. Biosphere is a sphere on earth where living organism forms a biotic community.
Explanation:
What are the characteristics of kingdom eubacteria?
Prokaryotic
Heterotrophic
Unicellular
Multicellular
Found in extreme Environments
Eukaryotic
Found in common environments
Autotrophic
unicellular
Explanation:
eubacteria is not mutiple in number
what is closer to the equator 10 degrees south or 20 degrees north
Answer:
10 degree north
Explanation:
Hope it helps:)
Prevention of Foodborne Illness
Food purchased from the grocery store may contain pathogens that cause foodborne illness. To reduce the risk of illness, follow proper procedures for food preparation and storage.
Drag the appropriate items into their respective bins.
1- Divide large pots of soup into smaller batches before cooling.
2- Use a food thermometer to make sure meat has reached an appropriate internal temperature.
3- Thoroughly wash cutting boards used for cutting raw meat before slicing fresh vegetables on them.
4- Do not use color as an indicator of how well-cooked meat is.
5- Wash hands correctly before and after handling food.
6- Refrigerate leftover food within 2 hours.
7- Thaw meat on the bottom shelf of the refrigerator.
8- Wash fresh fruits and vegetables before preparing and/or eating.
Clean Combat Cross-Contamination Cook Chill
Answer:
1- Chill
2- Cook
3- Combat Cross-Contamination
4- Cook
5- Clean
6- Chill
7- Combat Cross-Contamination
8- Clean
Explanation:
A foodborne illness (also known as food poisoning) is an illness caused by eating contaminated foods by harmful microorganisms such as bacteria (e.g., Escherichia coli), viruses, parasites, and/or toxins (e.g., mycotoxins) contained in foods. Some of the most common symptoms of food poisoning include vomiting, nausea and diarrhea. Foodborne illnesses are generally caused by improper practices in the home kitchen, i.e., improper handling, preparation and food storage. Cross-contamination refers to the transfer of harmful microorganisms/toxins from one substance to another. The most common contributing factors to cross-contamination include equipment-to-food contamination, food-to-food contamination, and people-to-food contamination. The most important habit to prevent cross-contamination is washing hands and foods before eating and cooking. Moreover, cooking foods to proper temperatures can destroy microorganisms/toxins that cause foodborne illnesses. Finally, chilling (at 8˚C or below) and freezing (at -18° C) foods can also protect from food-borne illnesses as many harmful microorganisms cannot grow at these temperatures.
3.what colour does the clear alcohol become once the leaf is boiled in it? Explain why?
Answer:
We boil the leaf in alcohol when we are testing it for starch because to remove the green pigment chlorophyll present in it. For the starch test, we need to observe the colour change from brown to blue when iodine is put on the leaf.How does coral bleaching impact humans?
Answer:
Coral bleaching and associated mortality not only have negative impacts on coral communities, but they also impact fish communities and the human communities that depend on coral reefs and associated fisheries for livelihoods and wellbeing.
Evolution best explains
O
the biological changes in species over time
O
how organisms obtain energy
why organisms originally came into existence
O
O
the ways organisms grow and develop
Question 16 Multiple Choice Worth 2 points)
(06.04 MC)
A surgeon extracts developing sperm cells from a male. In what order will he cut through the tissues of the male to access the developing sperm?
Testis; vas deferens; scrotum
O Testis; scrotum; vas deferens
O Scrotum; testis, seminiferous tubule
O Scrotum, seminiferous tubule; testis
Question 17(Multiple Choice Worth 2 points)
(06.04 MC)
Which property refers to how energy, such as heat and electricity, can travel through a material?
Answer:
Conductivity
Explanation:
The ability of electrical energy to flow through materials is called conduction, so the property is the conductivity property
brown eye color is dominate; blue is recessive.if a brown-eyed man marries a blue-eyed woman and they have a brown eyed boy and a blue eyed girl, what can we conclude about the parents?
Answer: first baby - dads dominant brown colored eyes
second baby - both of moms genes becuase you need two recessive genes to have a recessive trait
Explanation: i hope that makes sense, have a great day!!
Now use the Frequency slider to increase the frequency to a high value. Compare the motion of the parti
Answer:
Now use the Frequency slider to increase the frequency to a high value. Compare the motion ofthe particles when the frequency is high to the low-frequency ...
Missing: parti | Must include: parti
Explanation:
are
PLEASE HELP QUICK!!!
What types of organisms
being modified through genetic engineering?
A. all organisms
B. bacteria only
C. plants only
Answer:
A. All organisms
Explanation:
What if constitution adoption?
Answer:
in your gaze I lost myself
Explanation:
porque eres linda mi amor
Which statement best describes how some trees respond to decreasing temperatures and shorter days in the fall? A. They drop their leaves and go into dormancy. B. They drop their leaves and increase photosynthesis. C. They grow new leaves and increase photosynthesis. D. They grow new leaves and go into dormancy.
This is the location at the surface where an earthquake started
O epicenter
O middle
hot spot
seismometer
Please help