44. Microorganisms help both to maintain and to disrupt the health of ecosystems. Give at least one example of each with an explanation of how they maintain and disrupt ecosystem health.
Answers
Microorganisms such as bacteria, protists, viruses, and fungi can have harmful or beneficial effects on the ecosystem.
An example of a microorganism with a positive role in the ecosystem health would be bacteria that can fix nitrogen in the soil for the plants to use, such as Rhizobium leguminosarum, which has a symbiosis with legumes.
Microorganisms that have a harmful effect on the ecosystem health would be those that cause diseases and harm other living beings, for example, viruses that affect plants, like the Tobacco mosaic virus, which infects plants from the Solanaceae family.
Related Questions
Which region is directly near the edges of a continent?
a submarine canyon
a continental margin
a mid-ocean ridge
an atoll
Answers
Answer: a continental margin
Explanation:
Explain why Euglenozoa cannot be classified as either plants or animals?
Answers
Euglenozoa are monophyletic group of flagellated protists as well as free-living, symbiotic, and parasitic species. According to genetic studies, Euglenozoa are meither plant nor animal despite the suffix zoa. They are somewhat the living dependent of a few of the primal unicellular organisms called eukaryotes. It is also a genus of unicellular flagellate protists where the word "unicellular" means that the organism consists of one cell only that's why they're not considered plant or animals.
Which description distinguishes eukaryotes from prokaryotes
Answers
Answer:
Explanation:
The primary distinction between these two types of organisms is that eukaryotic cells have a membrane-bound nucleus and prokaryotic cells do not. The nucleus is where eukaryotes store their genetic information.
Prokaryotes only contain a single circular chromosome and lack a nucleus and membrane-bound organelles. In contrast, eukaryotes have numerous linear chromosomes and a nucleus.
Organisms called eukaryotes have intricate cellular structures. Their cells are distinguished by the presence of a genuine nucleus, which contains the DNA that serves as the genetic code. The nuclear envelope, a double membrane that encloses the nucleus, is made up of numerous organelles including the Golgi apparatus, endoplasmic reticulum, and mitochondria. These organelles are in charge of carrying out numerous metabolic processes and carrying out specialised tasks required for the survival of the cell. On the other hand, prokaryotes are straightforward organisms devoid of a nucleus and organelles that are bound to membranes. Their cells have a single nucleoid, a circular fragment of DNA that floats freely in the cytoplasm and gives them some control over their genetic makeup.
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Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
Answers
Which statement explains one way that minerals form?
O They are mined from rocks.
O They are produced from molten minerals.
O They are grown in a laboratory.
O They are washed up on a seashore.
Answers
Answer:
O They are produced from molten minerals.
Explanation:
Minerals can be produce form molten rocks or materials in nature.
Minerals are solid inorganic compounds with a definite composition and an ordered atomic arrangement.
Minerals are naturally formed. When rocks melt, they can aggregate or concentrate certain minerals in parts of the melt. This process known as differentiation takes place at different temperature and pressure conditions in a molten rock.it's b
Explanation:
significance of photosynthesis
Answers
Answer:
Significance of Photosynthesis. Photosynthesis is the process by which green plants, in the presence of light combine water and carbon dioxide to form carbohydrates. Oxygen is released as a by product of photosynthesis.
Explanation:
Which is an example of a transverse wave?
an ultrasound that transmits soundwaves
a crowd doing the wave at a sporting event
the waves formed by an earthquake
the movement of a spring in a pogo stick
Answers
Answer:
a crowd doing a wave at a sporting event
The example of transverse wave is a crowd doing the wave at a sporting event.
What is transverse wave?A transverse wave is a wave whose motion is perpendicular to the direction of propagation of the wave.
This type of wave travels perpendicular to the direction of propagation of the wave.
Some waves formed by earth can be longitudinal (P-wave) while some can be transverse (S-Wave).The movement of a spring in a stick is parallel or longitudinal.Thus, the example of transverse wave is a crowd doing the wave at a sporting event.
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Cells with Agglutinogen A+ Anti-A
what is the applied rule in this case and what a blood group can this person receive ?
Answers
It is important to match the blood types of the donor and recipient.
In this case, the person's blood cells have an agglutinogen A, which is a substance that can cause the blood to clot. They also have anti-A antibodies in their blood, which means that their immune system will recognize and attack cells with agglutinogen A.
The rule that is applied in this case is the ABO blood group system. According to this system, there are four blood types: A, B, AB, and O. People with blood type A have agglutinogen A on their red blood cells and anti-B antibodies in their plasma.
People with blood type B have agglutinogen B on their red blood cells and anti-A antibodies in their plasma. People with blood type AB have both agglutinogen A and agglutinogen B on their red blood cells, but they do not have any anti-A or anti-B antibodies in their plasma. People with blood type O do not have either agglutinogen A or agglutinogen B on their red blood cells, but they have both anti-A and anti-B antibodies in their plasma.
Based on this information, the person you described with cells that have agglutinogen A and anti-A antibodies in their blood has blood type A. They can receive blood from a donor with blood type A or O, but they cannot receive blood from a donor with blood type B or AB. properly in order to avoid a transfusion reaction, which can be serious or even life-threatening.
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Which of the following factors can limit photosynthesis by being either too high or too low?
a.
Light
c.
Oxygen
b.
Carbon dioxide
d.
Temperature
Answers
Answer: A) Light
Explanation:
Hey!! It's me again because why not!!
Answer:
Temperature
Explanation:
Cross between to plants (P1): one tall (TT) and one short (tt).
A. cannot predict genotype
B. could produce short plants in second generation (F2)
C. could produce short plants in first generation (F1)
D. would never produce short plants
Answers
When you cross the genotypes TT and tt for the two plants, it is only possible to get the genotype Tt.
No matter what, the answer is NOT A OR D!
If the short genotype is dominant, the answer is C.
If the tall genotype is dominant, the answer is B (Tt crossed with Tt in a punnet square produces one tt)
I hoped this helped you! Without the dominant trait being listed it was harder to answer but I did my best :)
describe what test crosses are used for and how are they carried out. be able to use test cross data to determine genotypes.
Answers
When a person with an unknown genotype is bred with a homozygous recessive genotype—the recessive parental variety—testcrosses are used. Recessive phenotypic manifestation.
A person with a dominant phenotype could be homozygous dominant, which means they have two copies of the dominant allele, or they could only have one copy of each dominant and recessive allele (heterozygous dominant). One can identify whether a person is homozygous dominant or heterozygous dominant by doing a test cross.
In a test cross, the subject individual is crossed with a partner that carries the recessive trait homozygously, and the offspring of the cross are evaluated. The allele that the homozygous recessive individual passes on determines the phenotypic of the children since the homozygous recessive individual can only pass on recessive alleles.
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Endocytosis and exocytosis are forms of active transport. What is active transport?
Answers
Answer:
process of moving molecules across a cellular membrane through the use of cellular energy
Explanation:
A newly discovered strain of anopheles gambiae, a mosquito, is found to be resistant to a particular insecticide due to a new allele at a specific locus. When individuals of this strain are mated with individuals of an insecticide-susceptible strain of a. Gambiae, all offspring are susceptible. If males and females of these susceptible offspring are then mated with one another, what proportion of offspring do you expect will be resistant?.
Answers
0.25 proportion of offspring will be resistant.
Female Anopheles mosquitoes are the primary vectors of malaria in humans. In the parasite life cycle, blood meals taken by female mosquitoes for the purpose of producing eggs serve as the link between the person and the mosquito hosts. As a result, the infected mosquito serves as a "vector" for spreading the disease from one person to another, while infected individuals pass on the parasite to the mosquito. In contrast to the human host, the mosquito vector is unaffected by the parasites.The resistant gene (r) in the mosquito is recessive because all the offspring in the F1 generation were susceptible (R).
in F2 generation when the individuals from F1 generation are mated the following are the results:
Rr X Rr
RR, Rr, Rr, rr (offspring)
Hence, out of 4 offspring only 1 is resistant to the insecticide hence 1/4 or 0.25 proportion will be resistant.
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Species like fish and turtles have many predators. These species produce more offspring than will survive. Which of the following correctly addresses an advantage and disadvantage of the overproduction of offspring?
Species have an increased chance of survival and parents are able to care for the young.
Competition of resources in the environment is reduced and species have a decreased chance of survival.
Overproduction of one species can threaten another species and species can become resistant to medicine.
Populations of species have increased genetic variation and competition for resources in the environment is increased.
Answers
Answer:
D?? I hope this helps.
Explanation:
Lillian does not have a fixed gender identity. What term best describes them?O gender fluid O female-bodied O masculine O cisgender
Answers
There is no set gender identity for Lillian. They are best characterized as gender flexible.
What is Gender Fluid?Gender fluidity refers to a non-fixed gender identification that changes over time or in response to circumstances. These changes may take place at the level of gender expression or gender identity. Gender fluidity is the term used to describe changes in a person's gender expression, gender identity, or both over time. Depending on the change, expression may change but not identity or identity may change but not expression. Or, both expression and identity could shift at the same time. Loki is and has always been a gay character, a fact that many Marvel fans who are not familiar with comics are unaware of. Loki was portrayed as gender-fluid in the Marvel comics, where he is known as everyone's favourite shape-shifting God of Mischief.To learn more about Gender Fluid, refer to:
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El Niño is an event where the normally strong winds along the equator are much weaker than usual, causing warm surface water along the equator to pile up. Do these images represent a normal circulation pattern or an El Niño pattern? Explain your response.
Answers
Yes, because In 1997, El Niño had not spread as far across the equator in comparison to 2015. During an El Niño event, warm ocean waters accumulate in the central and eastern tropical Pacific, disrupting the normal atmospheric circulation patterns.
What is the El NiñoEl Niño refers to a climatic occurrence marked by the increase in temperatures of the ocean's surface in the central and east areas of the tropical Pacific Ocean. It has the potential to cause considerable changes in global weather phenomena.
The intensity and scope of El Niño occurrences differ annually. The year 2015 experienced a robust El Niño, which had significant and far-reaching impacts on weather systems around the world.
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Describe the path an egg from the ovary to the outside of the female body
Answers
Which three statements contain information about cats that is based on scientific knowledge rather than opinion?
Answers
Answer:
First claim '' cats are very smart animal''. Second claim '' cats make bonds with humans''
Complete the sentence using the proper phrases.
Some natural features form from what is left behind after a geological process occurs. See the image below and complete the sentence. ‘This collection of pebbles on the ground surface is an example of ____________ which previously were assumed to form ____________ but is an example of physical weathering in which ____________ .’
Answers
This collection of pebbles on the ground surface is an example of sedimentary deposits which previously were assumed to form through erosion but is an example of physical weathering in which rock fragments disintegrate.
Sedimentary deposits are typically formed through the accumulation and consolidation of sediment particles, such as pebbles, sand, and mud, over time. However, in this case, the presence of these pebbles is not a result of erosion and subsequent deposition.
Rather, it is an outcome of physical weathering, where larger rocks undergo mechanical processes that break them down into smaller fragments, such as pebbles, due to factors like temperature changes, pressure, and frost action. This illustrates how natural features can sometimes arise from unexpected processes, challenging previously held assumptions.
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True or False: Traits that are beneficial in one environment will always be beneficial in another environment
Answers
Answer:
False.
Explanation:
Natural selections favors traits that are beneficial in a specific environment. Traits that are helpful in one environment might actually be harmful in another.
PLEASE HELP ASAP FOR A TEST!! - Mutations cause changes to ______ sequences, which can directly affect the way a ____ functions. These changes can alter the observable ______ an organism exhibits.
1st blank: protein, phenotype, amino acids
2nd blank: protein, phenotype, amino acids
3rd blank: protein, phenotype, amino acids
Answers
Answer:
energy, distance, Displaceplment, Protenin amino phenotype
Explanation:
Why can’t we send cactuses out too mars? It’s has a form of water at night time and the plant doesn’t need that much water and since it’s a plant it can turn the 95% carbon dioxide in to oxygen? Right?
Answers
Answer:
It is very possible for a plant to grow on mars, but you would need better soil, because mars' soil is filled with perchlorate salt which is toxic to plants. You would also need to conceal the plant, because the temperatures on mars are usually freezing. But yes, you could have a cactus on mars, it would just be very difficult to sustain.
Explanation:
Answer:
In response to what another user said, I would suggest bringing fertilized soil to Mars, placing it on the surface of the soil, and planting the cactus.
Plants are capable of using nitrogen directly from the atmosphere.
True False
Answers
Which of the following happens during interphase?
Answers
Answer:
Interphase is the portion of the cell cycle that is not accompanied by gross changes under the microscope, and includes the G1, S and G2 phases. During interphase, the cell grows (G1), replicates its DNA (S) and prepares for mitosis (G2). ... In interphase, the cell gets itself ready for mitosis or meiosis.
Explanation:
Answer:DNA replication takes place making two identical copies of the genome of the cell.
Explanation:
Which two changes would you expect as a result of a severe drought that wipes out several plant populations? A. Decreased resource availability among herbivores B. Increased resource availability among herbivores C. Decreased competition among herbivores D. Increased competition among herbivores
Answers
A severe drought that wipes out several plant populations would have significant ecological consequences, particularly for herbivores that rely on these plants for food. Two changes that can be expected as a result of such a drought are option A and D.
A. Decreased resource availability among herbivores: With the loss of plant populations, there would be a decline in the overall availability of resources, such as leaves, fruits, and seeds, which herbivores depend on for sustenance. This scarcity of food would lead to a decrease in the amount of resources available for herbivores, potentially resulting in malnutrition, decreased population sizes, and increased vulnerability to predation and disease.
D. Increased competition among herbivores: As the number of plant populations decline, herbivores will have to compete for the limited remaining resources. With fewer plants to sustain them, more herbivores will be forced to rely on the remaining patches of vegetation, intensifying competition for food. This increased competition can lead to heightened aggression, territorial disputes, and a higher likelihood of injury or death among herbivores.
These changes can have cascading effects throughout the ecosystem. Decreased resource availability among herbivores may result in reduced prey availability for predators that rely on herbivores, potentially impacting their populations as well.
Increased competition among herbivores can disrupt the balance of herbivore communities and alter grazing patterns, affecting plant species composition and overall ecosystem dynamics. Therefore the correct option is A and D
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Which of the following is the correct sequence in which a DNA sequence is used to produce a protein?
A.amino acids, mRNA, tRNA
B.tRNA, mRNA, amino acids
C.tRNA, amino acids, mRNA
D.mRNA, tRNA, amino acids
Answers
C is the answer
If a cell experienced a dramatic reduction in the number of nucleotides, what would you predict to be least affected in the cell?.
Answers
The cell's concentration of amino acids would be least affected in the cell if there is a dramatic reduction in the number of nucleotides.
Transfer ribonucleic acid (tRNA) is a type of RNA molecule that helps interpret RNA into a protein. . tRNAs convey amino acids to the ribosome during translation and they join with three-nucleotide mRNA sequences called codons. Each tRNA has amino acids attached to its end. The amino acids are formed to link together as the ribosome advances along the mRNA.
tRNA molecules translate the genetic information into a protein by transferring amino acids to the protein synthesis during translation. Amino acids are to be placed in the proper positions by tRNA where proteins and rRNA combine.
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The biological influences on organisms within an ecosystem is known as what?
a. biotic factors
b. abiotic factors
c. natural occurrences
d. nature
Answers
Answer:
a. biotic factors
Explanation:
Biotics are organisms that have life and constitute the biota of a community. That is the plants, animals, and microorganisms of a natural system.
It is the factor resulting from the activities of a living being or of any living component in an environment, such as the actions of an organism that affect the life of another organism.
Describe a DNA molecule and its shape
Answers
Answer:
DNA is a long molecule, made up of two strands twisted together to make a spiral known as a double helix.
Which of the following is the monomer for nucleic acids?