Answers
Midges of the genus Acarus, which live in the bottom of rivers and lakes, are examples of a benthic species. Benthic species are organisms that live on or at the bottom of a body of water, such as a river, lake, or ocean.
Midges of the genus Acarus are an important part of the aquatic ecosystem, as they play a vital role in nutrient cycling and food webs. Midges, specifically those in the genus Acarus, are a type of benthic species that can be found at the bottom of rivers and lakes. They are small, two-winged flies that are important members of the aquatic food web, serving as a food source for larger organisms like fish and birds. Overall, midges of the genus Axarus are a key benthic species that play an important role in the health and functioning of aquatic ecosystems.
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Related Questions
What is the function body system shown below?
Answers
Answer:
provide nutrients to the body
Explanation:
this is the digestive system
which processes lead to the formation of igneous rock?
A. Heat and pressure
B. Melting and cooling
C. Erosion and weathering
D. Compacting and cementing
Answers
In your post, discuss ONE Neanderthal or Denisovan gene that is currently found within our species. Tell us about the gene and its function. Explain what it does for us. (Make sure you give a citation.) Explain in your own words any possible advantages that your Neanderthal or Denisovan gene might have. Make sure you give in informed opinion that is grounded in your research. Caution: Make sure that your chosen genetic variant is not simply a result of common ancestry. For example: FOXP2 is a gene that Neanderthals and Sapiens share because of common ancestry. Verify that the genetic variant that you are looking at is actually derived from Neanderthals, Denisovans or another species. You will have to respond to two other student posts. Make sure you cite your work.
Answers
Answer:
It has been shown that many microRNAs (miRNAs) were differentially expressed in Neanderthal and Denisovan genomes.
Explanation:
MicroRNAs (miRNAs) genes encode for RNA regulatory sequences capable of modulating gene expression patterns, thereby they play critical roles in evolution and development. It has been proposed that these miRNAs might control the expression of TRAPPC9, GRID1, PRDM16, NAV2, SorCS2, CAMTA1, and ASIC genes, which are involved in neurocognitive developmental functions.
You can read this publication about this important issue:
Cserhati et al. (2018). Motifome comparison between modern human, Neanderthal and Denisovan. BMC genomics, 19(1), 472.
what usually accompanies a cold spell in minnesota?
Answers
The ozone has been depleted (reduced/ damaged) by many man-made chemicals that have been released into the atmosphere. If the presence of these chemicals continues to stay the same (or increase), it is reasonable to predict that
A organisms would develop higher rates of asthma.
B all life on Earth would eventually freeze.
C freshwater would become salt water.
D more ultraviolet radiation would penetrate to Earth's surface, furthering current global warming trends.
Answers
Answer:
More ultraviolet radiation would penetrate to Earth's surface, furthering current global warming trends.
Are natural disasters avoidable
Answers
Answer:
Natural hazards such as flooding, earthquakes and hurricanes cannot be prevented. However, there are still opportunities to reduce damage from natural hazards.
Some natural disasters can be forecasted based on past scientific data.
So if you know ahead of time of the occurence then I guess you can take precautions and avoid natural disasters wherever you live.
Explanation:
Answer: Natural disasters are inevitable and we may not be able to prevent them.
Explanation: We can work towards building a more resilent community, one that emerges from such incidents stronger than ever.
Type your response in the box.
The muscular system and the skeletal system are two different organ systems, but they’re often referred to jointly as the musculoskeletal system. Why do you think the word musculoskeletal exists? What similarities in functions do you think the muscular system and skeletal system have?
Answers
Answer:
Plato answer: This word exists because both systems are involved in movement and support of the body, and they work together to perform these functions. Bones provide support and give the body structure. Muscles give strength, and the contraction and relaxation of muscles allow for different movements.
Explanation:
Another Answer: The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person's body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
Answer:
Plato answer: This word exists because both systems are involved in movement and support of the body, and they work together to perform these functions. Bones provide support and give the body structure. Muscles give strength, and the contraction and relaxation of muscles allow for different movements.
Another Answer: The muscular system is responsible for the movement of the human body. Attached to the bones of the skeletal system are about 700 named muscles that make up roughly half of a person's body weight. Each of these muscles is a discrete organ constructed of skeletal muscle tissue, blood vessels, tendons, and nerves.
in order to observe the results of simple genetic crosses, you will examine kernels of corn (zea mays) on a corncob. each kernel is an offspring of a cross between two parents, and therefore an entire cob represents a large population of offspring from a particular cross.
Answers
We will look at maize (zea mays) kernels on a corncob in order to see the outcomes of basic genetic crosses. Because every kernel is a product of a cross between two parents, a whole cob represents a sizable population of offspring from a specific cross.
The genetic background or the total number of genes affecting the anthocyanin pathway determines the colour of the kernel (e.g RI, Cl and Pr). ' The colour of the starchy endosperm affects the colour of the kernel (white or yellow). The aleurone in yellow and white kernels is colourless.
The colour and shape of the maize kernels show a variety of readily recognisable phenotypes. Yellow corn is produced by a recessive allele of the same gene, but purple corn is produced by a dominant allele.
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What does f(10) represent? The number of dollars it costs for 10 people to rent the house The number of houses that can be rented for 10 days The number of days the house can be rented for a cost of $250 The number of dollars it costs to rent the house for 10 days
The total cost f(x), in dollars, for renting a vacation house for x days is shown:
f(x) = 10 + 250x
Answers
The function f(x) = 10 + 250x represents the total cost, in dollars, for renting a vacation house for x days. In this case, f(10) represents the cost of renting the house for 10 days, which can be calculated as 10 + 250(10) = 2510 dollars. Option 4 is correct.
To find out what f(10) represents, we simply substitute 10 for x in the given function:
f(10) = 10 + 250(10)
f(10) = 10 + 2500
f(10) = 2510
This function can be used to calculate the total cost of renting the house for any number of days, making it a useful tool for budgeting and planning purposes. Hence option 4 is correct.
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--The complete Question is, What does f(10) represent?
The number of dollars it costs for 10 people to rent the house The number of houses that can be rented for 10 days The number of days the house can be rented for a cost of $250 The number of dollars it costs to rent the house for 10 daysThe total cost f(x), in dollars, for renting a vacation house for x days is shown: f(x) = 10 + 250x --
what is a range of the lowest temperatures found at the top of the tropopause
Answers
Answer:
62°F (17°C) to -60°F (-51°C) at the tropopause.
Is crick and Watson a type of genetic test
Answers
No, "Crick and Watson" is not a type of genetic test. Crick and Watson refer to James D. Watson and Francis Crick, who were scientists involved in the discovery of the structure of DNA. They proposed the double-helix structure of DNA in 1953, which provided the foundation for understanding genetic information and its role in heredity.
Genetic tests, on the other hand, are laboratory tests that analyze an individual's DNA or genes to provide information about their genetic makeup, potential genetic disorders, or predispositions to certain conditions.
These tests can be used for various purposes, such as diagnosing genetic disorders, predicting the risk of developing certain diseases, determining carrier status for genetic conditions, or providing ancestry and genealogical information.
While Crick and Watson made significant contributions to the field of genetics, they are not directly associated with genetic testing. Genetic tests are based on scientific advancements and technologies developed after their groundbreaking discovery of the DNA structure.
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17. A terrane becomes part of a continent in a process called
a. rifting.
c. slab pull.
b. converging.
d. accretion.
Answers
chromosome are made of
how many DNA molecules
Answers
Answer:
A chromosome is formed from a single, enormously long DNA molecule that contains a linear array of many genes. The human genome contains 3.2 × 10^9 DNA nucleotide pairs, divided between 22 different autosomes and 2 sex chromosomes.
Explanation:
HOPE THIS HELPS ;}
Answer:
two
Explanation:
each chromosome is made up of 2 dna molecules
A crane has a sharp and pointed beak while the duck has a flat beak.Explain why
Answers
Answer:
The crane has a sharp and pointed beak adapted for catching and grasping prey. The sharp beak allows the crane to effectively stab and pierce its prey, such as fish, frogs, or small animals. The pointed shape helps the crane to accurately target its prey and secure a firm grip.
On the other hand, the duck has a flat beak, which is better suited for its specific feeding habits. Ducks are primarily filter feeders, and their flat beak enables them to sift through water or mud to collect small organisms, insects, and plants. The flat beak acts like a sieve, allowing the duck to strain out food particles while retaining water.
The difference in beak shape between the crane and the duck reflects their distinct feeding strategies and ecological roles. Each species has evolved its beak shape to optimize its ability to capture and consume the specific types of food sources available in their respective habitats.
The cell membrane is described as being fluid because:
A. the phosphate groups move between fatty acids.
B. the membrane lets materials pass through it.
C. the fatty acid chains are inside it.
O D. the phospholipids move from side to side.
Answers
Answer:
D
Explanation:
The fluid mosaic model got its name because the plasma membrane resembles a mosaic formed by proteins embedded in a fluid of lipids. ... In the fluid mosaic model, the plasma membrane is basically composed of a lipid bilayer in which proteins are inserted.
What happens when blood from people with different blood group mix?
Answers
Answer:
you die
Explanation:
if you get a blood transfusion with diffrerent types of blood you die
PLEASE HELP ASAP, LAST QUESTION
Which groups contain BOTH primary and secondary consumers?
Answers
this muscle group would primarily originate on the pectoral girdle and humerus and insert on the radius, ulna, and/or carpals. this muscle group would primarily originate on the pectoral girdle and humerus and insert on the radius, ulna, and/or carpals. muscles that move the arm muscles that position the pectoral girdle muscles that move the forearm and hand extrinsic muscles of the hand and fingers
Answers
The muscles that move the forearm and hand muscles that move the forearm and hand. These are appendicular muscles that primarily originate on the pectoral girdle and arm, and insert on the radius, ulna, and/or carpals.
The skeletal muscles are separated into axial (trunk and head muscles) and appendicular (arms and legs muscles) groups. The arrangement of the skeleton's bones, which is likewise reflected in this system, is similar. Axillary muscles are categorised according to their location, function, or both.
Axial and appendicular divisions make up the muscular system. The axial skeleton is held in place and supported by axial muscles. The limbs are supported, moved, and braced by appendicular muscles.
Hence, muscle binds with bone to move body structure.
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Only answer if you know the answer
Answers
Answer:
B. A helicase enzyme unwinds the DNA molecule, then corresponding nucleotides are added to the separated original strand forming two separate semiconservative molecules
Explanation:
DNA Replication is an important phenomenon as far as cell division is concerned. It is the process whereby a DNA molecule doubles its content or forms two DNA molecules from one.
In the semi-conservative model of DNA replication, an enzyme called DNA helicase unwinds the double stranded DNA molecule into two single strands. The single strands are then used as template for DNA polymerase to synthesize another molecule of DNA. Hence, two separate DNA molecules comprising of one old strand and one new strand.
Most articles pass right through the atom, this means that most of the atom is
Answers
Most articles pass right through the atom, this means that most of the atom is an empty space.
What is an atom?An atom is described as a particle that consists of a nucleus of protons and neutrons surrounded by a cloud of electrons.
Protons and neutrons make up the core nucleus of an atom, which is encircled by an electron cloud. In relation to the size of the atom as a whole, the nucleus is exceedingly small.
As a result, the electrons surrounding the nucleus are the primary target of interactions when particles or even light pass through an atom. The majority of the atom's remaining space, which includes the nucleus, is vacant.
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Scarification is a process that scratches up the surfaces of seeds that pass through the guts of birds. A student wanted to see if scarified seeds grew better than those that were not scarified. He simulated scarification by rubbing 20 cherry seeds with sandpaper. Another set of 20 cherry seeds were left alone. The student planted each of the seeds into separate pots and gave them the same amount of water daily. The pots were placed in a location with a constant temperature of approximately 25 degrees C. The number of seeds that germinated each group was recorded daily for three weeks. Which is the control group?
Which is the experimental group?
What is the independent variable?
What is the dependent variable?
Name at least one controlled variable?
Was quantitative or qualitative data collected?
Answers
The control group is the set of non-scarified seeds. The experimental group is the set of scarified seeds. The independent variable is scarification process. The dependent variable. is the number of seeds that germinated in each group.
Controlled variables are the amount of water supplied daily, the constant temperature of the growing environment, the type of cherry seeds used and the size of the planting pots.
Quantitative data are the daily count of the number of seeds that germinated in each group over three weeks.
The study does not have qualitative data.
Differences between dependent and independent variablesThe independent variable needs no stimulus to generate results.The dependent variable needs to be stimulated by the independent variable to generate results.A scientific experiment needs to feature all of the elements represented above to be effective and reliable. This is because these elements prove that the experiment was carried out methodically, specifically, and with care in each variable and presented data.
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Which of the following is a disadvantage of geothermal energy?
Answers
Answer:
B
Explanation:
The collection process of geothermal energy itself creates large amounts of pollution which damages the environment - especially toxicity in water.
Answer:
B. Collecting it damages the environment.
How is the structure of a unicellular organism different than the structure of a multicellular organisms? How does this affect function
Answers
Which of the following is the best explanation in how the lac operon in E. coli bacteria functions in the absence of lactose?
The last option is RNA polymerase is blocked from conducting translation of the genes for processing lactose when it is absent
Answers
Answer:
Explanation:
The best explanation of how the lac operon in E. coli bacteria functions in the absence of lactose is that a repressor protein binds to the operator region of the operon, preventing RNA polymerase from transcribing the genes responsible for lactose metabolism. This is because the lac repressor protein is synthesized in an active form and is able to bind to the operator sequence of the operon, physically blocking the binding of RNA polymerase and preventing the transcription of the genes for lactose utilization.
In summary, the lac repressor protein prevents the transcription of the genes responsible for lactose metabolism in the absence of lactose by physically blocking the binding of RNA polymerase to the operon's promoter region.
When prokaryotic cells copy their DNA, replication
begins at
O A. a single point on the chromosome.
O B. opposite ends of the DNA molecule.
QC. dozens to hundreds of points along the
DNA molecule.
D. the telomere, at the tip of the chromosome.
Answers
When prokaryotic cells copy their DNA, replication begins at a single point on the chromosome, hence option A is correct.
In prokaryotes, replication begins at the origin of replication, which is a region of the chromosome where the DNA splits open. The replication fork is created when the DNA double helix is opened up by helicase.
A replication origin, which in bacteria is a distinct locus that contains DNA sequence motifs recognized by an initiator protein whose function it is to construct the replication fork machinery at this point, is where chromosomal DNA replication first begins.
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The element chlorine belongs to which of the following groups?
*
2 points
alkali metals
halogens
noble gases
alkaline earth metals
Answers
Answer:
hallogens
Explanation:
b/c alkali and alkaline eearth metals both are group 1 and 2 hallogens group 7 and noble gases group 8 .
in developed countries which of the following is a positive effect of agricultural changes in the past century?
A. Desertification
B. Clearing rainforests
C. Contamination due to run off
D. Amount of food produced has increased
E. Nutrient rich soil for farmland increasing
Answers
In developed countries , amount of food produced being increased is a positive effect of agricultural changes in the past century.
Agricultural changes in developed countries were set up such as application of fertilizers etc so as to achieve a maximum yield as the increasing population all over the world means increase in food production to cater for individuals and to prevent starvation and death.
Agricultural changes were also done to ensure goods produced have a very high quality.
The remaining options such as Desertification, Clearing of rainforests and contamination can be referred to as part of the negative effect of agricultural changes in the past century.
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All changes saved
15. What did people use for energy before fossil fuel and electrical power
energy was harnessed?
They used whale oil and steam power to run machines.
O Humans had only their own muscles and a knowledge of levers and
pulleys for power.
Humans used muscle power and direct wind and water power.
Humans burned wood to power their machines.
Answers
Before fossil fuel and electrical power energy were harnessed, Humans used muscle power and direct wind and water power.
The correct option is C.
What is muscle power?Muscle power refers to the power generated by humans during the contraction and relaxation of their muscles.
Muscle power can be used to accomplish a variety of tasks such as lifting objects, walking, running, etc.
Before the discovery of fossil fuels, humans use muscle power as well as wind and water power to accomplish tasks such as driving of motors, sailing ships, cutting trees, etc.
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Why does natural selection occur more when there is competition for resources?
Answers
Natural selection occurs more prominently when there is competition for resources because competition creates selective pressures that drive adaptations and favor certain traits over others.
In any given environment, resources necessary for survival and reproduction, such as food, water, and shelter, are limited. As a result, individuals within a population must compete with one another to obtain these resources.
Competition leads to differential survival and reproductive success among individuals.
Those individuals with advantageous traits or variations that enable them to more effectively acquire and utilize resources have a higher likelihood of survival and producing offspring.
These advantageous traits can be physical characteristics, physiological adaptations, or behavioral strategies that provide a competitive edge.
Through natural selection, individuals possessing beneficial traits are more likely to pass on their genes to the next generation, while individuals with less favorable traits are at a disadvantage.
Over time, this process results in the accumulation of beneficial traits within the population, enhancing their overall fitness and adaptation to the specific environment.
Therefore, competition for resources acts as a driving force for natural selection by selecting for traits that enhance an individual's ability to secure limited resources, survive, and reproduce successfully.
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Earths orbit is an almost circular repeating path around the sun. Earth is held in its orbit by gravity or asteroids?? Please HELP
Answers
Answer:
earth is held in its orbit by gravity
Explanation:
Because the earth is orbiting by gravity not asteroid Because asteroids will cause a disaster