Answer:
a niche
Explanation:
niche refers to the role of a species in its ecosystem
Someone pls help me ill give out brainliest pls don’t answer if you don’t know
Cellular respiration is how living things obtain energy for life. The organelle where cellular respiration takes place is the
A. chloroplast
B. Golgi body
C. mitochondria
Answer:
C. Mitochondria
Explanation:
Female mosquitoes need a meal of blood from a person or other animal in order to produce eggs. It has been discovered that mosquitoes have cells on their antennae that can detect the insect repellent known as DEET. The repellent is not harmful to mosquitoes, but when mosquitoes detect DEET, they will not land on the surface where the DEET has been applied. This protects people from being bitten by mosquitoes. Recently, scientists found some mosquitoes that are resistant to DEET because they do not detect its presence. They bred these mosquitoes and eventually produced a population consisting of about 50% DEET- resistant insects. Identify the process most likely responsible for a mosquito initially becoming resistant to DEET.
Answer:
Mutation followed by natural selection made mosquitos resistant to DEET
Explanation:
Natural selection selects beneficial alleles, which increase their frequency in the population, resulting in adaptation. Aptitude, which is the contribution of each genotype to the next generation, increases too.
In many cases adaptations, resulting from the natural selection process can be correlated to environmental factors or selective pressures applied by other organisms or habitats.
Let us remember that, a mutation is a change or alteration in DNI sequences that introduce new variants. Many of these are eliminated, but some of them might succeed and be incorporated into each individual. These mutations are the ones that have been selected by natural selection.
So, in the exposed mosquitos´ example,
The selective pressure or modeling environmental factor is the DEET repellent.Some of the mosquitos mutated changing their behavior. The new mosquito´s response is not-detection of the repellent presence -only in those individuals carrying the mutations-. Natural selection benefits these mutations. Mosquitos survive and become more resistantProbably some of the mosquitos in the population suffered a mutation that favored them in not detecting repellent DEET. These individuals developed resistance to the chemical and were able to survive and reproduce, enhancing population sizes again. Natural selection benefited the mutation that gave them resistance.
Let us remember that the term resistance refers to an inheritable change in the population sensitivity, reflected through the consecutive failure of the chemical effects, correctly used in order to cause an effect on the insect population.
Repellents might produce a genetic modification in the insects, leading them to not detect the chemical. Insects evolve with the capability of tolerating the DEET dose that normally is used to repel mosquitos
The excessive use of DEET leads to the fixation of new genes -by natural selection- that result from mutations in the mosquito genetic material, which makes them become even more resistant to the chemical.
sodium-potassium pump. Find out what this pump does for a cell, and explain it here.
Answer:
protein pump
Explanation:
This protein pump, also known as the Na+/K+ pump or Na+/K+-ATPase, is located in the cell membrane of neurons (and other animal cells). It works by transporting sodium and potassium ions across the cell membrane in a 3:1 ratio of sodium ions out to potassium ions in.
Answer:
Hello There!!
Explanation:
Here is the answer↬It transports sodium and potassium ions across the cell membrane.
hope this helps,have a great day!!
~Pinky~
Bacteria and fungi fulfill which role in an ecosystem?
A. Consumer
B. Decomposer
D. Producer
Answer:
B. Decomposer
Explanation:
Bacteria and fungi fulfill the role of decomposers in an ecosystem. Hence, option (B) is the correct answer.
When looking at the cell membrane, where are the lipid heads located?
Answer:
The cell membrane consists of two adjacent layers of phospholipids, which form a bilayer. The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side.
The cell membrane consists of two adjacent layers of phospholipids, which form a bilayer. The fatty acid tails of phospholipids face inside, away from water, whereas the phosphate heads face the outward aqueous side.
What is cell membrane?
The cell membrane is a biological membrane that separates and protects the interior of all cells from the outside environment.
Moreover, the cell membrane, also called the plasma membrane, is found in all cells and separates the interior of the cell from the outside environment. The cell membrane consists of a lipid bilayer that is semipermeable. The cell membrane regulates the transport of materials entering and exiting the cell.
Hence, cellular membranes — including plasma membranes and internal membranes — are made of glycerophospholipids, molecules composed of glycerol, a phosphate group, and two fatty acid chains.
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Which element would most likely have an electron affinity measuring closest to zero?
Ar(Argon) have an electron affinity measuring closest to zero .
Answer:
Argon/ Ar
Explanation:
Base your answer on the information below. A decade after the Exxon Valdez oil tanker spilled millions of gallons of crude [oil] off Prince William Sound in Alaska, most of the fish and wildlife species that were injured have not fully recovered. Only two out of the 28 species, the river otter and the bald eagle, listed as being injured from the 1989 spill are considered to be recovered said a new report, which was released by a coalition of federal and Alaska agencies working to help restore the oil spill region. Eight species are considered to have made little or no progress toward recovery since the spill, including killer whales, harbor seals, and common loons [a type of bird]. Several other species, including sea otters and Pacific herring, have made significant progress toward recovery, but are still not at levels seen before the accident the report said. More than 10.8 million gallons of crude oil spilled into the water when the tanker Exxon Valdez ran aground 25 miles south of Valdez on March 24, 1989. The spill killed an estimated 250,000 seabirds, 2,800 sea otters, 300 harbor seals, 250 bald eagles, and up to 22 killer whales. Billions of salmon and herring eggs, as well as tidal plants and animals, were also smothered in oil. Reuters The oil spilled by the Exxon Valdez tanker is an example of ______________.
Answer:
Explanation: The Exxon Valdez oil spill was a manmade disaster that occurred when Exxon Valdez, an oil tanker owned by the Exxon Shipping Company, spilled 11 million gallons of crude oil into Alaska’s Prince William Sound on March 24, 1989. It was the worst oil spill in U.S. history until the Deepwater Horizon oil spill in 2010. The Exxon Valdez oil slick covered 1,300 miles of coastline and killed hundreds of thousands of seabirds, otters, seals and whales. Nearly 30 years later, pockets of crude oil remain in some locations. After the spill, Exxon Valdez returned to service under a different name, operating for more than two decades as an oil tanker and ore carrier.
On the evening of March 23, 1989, Exxon Valdez left the port of Valdez, Alaska, bound for Long Beach, California, with 53 million gallons of Prudhoe Bay crude oil onboard.
At four minutes after midnight on March 24, the ship struck Bligh Reef, a well-known navigation hazard in Alaska’s Prince William Sound.
The impact of the collision tore open the ship’s hull, causing some 11 million gallons of crude oil to spill into the water.
At the time, it was the largest single oil spill in U.S. waters. Initial attempts to contain the oil failed, and in the months that followed, the oil slick spread, eventually covering about 1,300 miles of coastline.
Investigators later learned that Joseph Hazelwood, the captain of Exxon Valdez, had been drinking at the time and had allowed an unlicensed third mate to steer the massive ship.
The graph shows the size of two populations of the same species over time.
35
30
25
20
Number of individuals
15
Area A
10
Are B
5
1.2) 45.628101112131415
Time
Which of these limiting factors is likely to be more plentiful in area A than in
area B?
A. Flooding
B. Disease
C. Shelter
D. Predators
Based on the given information, it is likely that the limiting factor more plentiful in Area A than in Area B is "C. Shelter.
What are limiting factors?Limiting factors are factors that restrict the growth, distribution, or abundance of a population or organism within an ecosystem. These factors can be biotic (such as competition, predation, or disease) or abiotic (such as temperature, water availability, or nutrients).
The presence or absence of limiting factors can affect the carrying capacity of an ecosystem, which is the maximum population size that the ecosystem can support over time. Understanding limiting factors is important in ecology and conservation biology, as they can affect the health and sustainability of ecosystems and species.
The limiting factor more plentiful in Area A than in Area B is "C. Shelter." This is because the population in Area A consistently shows a higher number of individuals over time, which suggests that there is more suitable shelter or habitat available to support the growth of the population
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7.9(A) Which of these conditions is most responsible for Earth having an environment
that supports life? help please
How to overcome Confusion?????
Answer:
use a full heal
Explanation:
A student is instructed to record the odor of a substance after heating it in a test tube. Which is the
correct safety procedure for the student to follow?
A Wave the fumes from the test tube toward the nose with a hand and inhale
B. Tilt the test tube toward the nose and inhale
C. Place the test tube directly under the nose and inhale
D. Cup hands over the test tube and inhale
Answer:
A Wave the fumes from the test tube toward the nose with a hand and inhale
Explanation:
Answer:
A. Wave the fumes from the test tube toward the nose with a hand and inhale
Explanation:
Hope this helps
what are the three main particles of soil are? How do these shape and influence the type of soil we observe and its uses?
Answer:
Soil particles vary greatly in size, and soil scientists classify soil particles into sand, silt, and clay. Texture indicates the relative content of particles of various sizes, such as sand, silt and clay in the soil. Texture influences the ease with which soil can be worked, the amount of water and air it holds, and the rate at which water can enter and move through soil. Soil provides plants with foothold for their roots and holds the necessary nutrients for plants to grow; it filters the rainwater and regulates the discharge of excess rainwater, preventing flooding; it is capable of storing large amounts of organic carbon; it buffers against pollutants, thus protecting groundwater.
Areas that do primary succession do NOT have:
A. Soil
B. Rocks
C. Sunlight
Answer:
A. Soil
Explanation:
The areas that do primary succession do not have soil.
please answer this for me
Answer:
more flexibility in movement
Explanation:
it allows the worm to pass waves of movement along its body to move through loose earth.
The bicycle rider followed a straight path along a road. Based on the information in the diagram,
which of these occurred between the two times given?
A. Decrease in speed
B. Increase in acceleration
C. Increase in momentum
D. Decrease in mass
If you have a cup of water the
same temperature as the
ocean, which has more heat
energy?
Answer:
both of them has a same temperature
Explanation:
Describe the distribution of Earth’s water resources.
Answer:
Look at the Eplanation Below.. >>>
Explanation:
The distribution of water is not uniform in both the hemispheres of earth. It is estimated the 43 % of total area covered by water lies in northern hemisphere where as the remaining 57 % lies in the southern hemisphere. About 96.5 % of total water are in the form of ocean . Rest water are present in the form of river ,lake , pond , water vapour etc.
What three things are needed for photosynthensis? (select all that apply)
Oxygen
Carbon Dioxide
Water
Sunlight
Definition of Photosynthesis
Photosynthesis is the process in which green plants produces their own food.
things that photosynthesis needs to occur are;
WaterSunlightWarmthAnswer:
Carbon DioxideWaterSunlightExplanation:
Plants need three things to perform photosynthesis, they are carbon dioxide, water, and sunlight.
according to this time table a train --------- at 3 o'clock .A will leave .B is leaving C. is going to
Answer:
is going on is your answer
Classify each of the samples in the grid below as one of the following substances. Each one may be used more than once:
si 0?no Nop suficientemente silvestre usuario independencia 6t?
Tissue working together makes an-
A. Organism
B. Organ
Answer:
B. Organ
Explanation:
Atom → Cell → Tissue → Organ → Organ System → Organism
Answer:
B. Organ
Explanation:
Tissue works together to make an Organ. So, option (B) is correct answer.
Two male deer will fight each other for the opportunity to mate with a female.
An owl catches a mouse and eats it for dinner.
Answer:
competition
predation
Explanation:
I just did it
How do I calculate Ph?
Explanation:
To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = - log [H3O+].
EARTH SCIENCE CLASS
Why is the street (asphalt) hotter than the sidewalk in the summer ?
Answer:
bad albedo ? sorry if not right
which sequence demonstrates the increasing complexity of levels of organization in multuticelluar organisms ?
A organelle_cell_tissue_organ_organ system_oraganism
B cell_organelle_tissue_organ_organsystem organisms
C organelle_tissue_cell_organ_organ system organisms
D cell_organism _organ_organ system _tissue_organelle
Answer:
it's A
Explanation:
It's just a simple chain. Many Organelles form cell, many cells form a tissue, many tissues together form an organ, various organs together form an organ system and different organ systems together make a complete organism.
I hope it helps :))
The pancreas contains exocrine cells that secrete digestive enzymes into the ____________ , and clusters of endocrine cells called pancreatic islets, which secrete insulin and ____________ , to regulate blood glucose levels. When blood glucose levels are high, the pancreas secretes the hormone insulin, which causes the liver to remove excess glucose from the blood and to store it in the liver as ____________ . When this stored form of glucose is low, the liver converts ____________ from fats and amino acids to glucose molecules. Most pancreatic cells produce pancreatic juice, which contains ____________ , to help neutralize the stomach acid. Pancreatic amylase digests ____________ , trypsin digests protein, and lipase digests fat. The major functions of the liver include: removing or detoxifying harmful substances from the blood; storing glycogen, ____________ , and several vitamins; synthesizing many proteins found in the blood ____________ ; and regulating blood cholesterol. Another function of the liver is to produce bile, which is a yellowish-green color because it contains bilirubin, a breakdown product of ____________ . Bile also contains bile salts, which serve to emulsify ____________ in the small intestine.
Answer:
The correct answer is - small intestine; glucagon, glycogen; glycerol, sodium bicarbonate; starch, iron, plasma, hemoglobin; fats.
Explanation:
The digestive enzymes are released in the small intestine by pancreatic cell, the cluster of these pancreatic exocrine cells called pancreatic islets that release insulin and glucagon hormones for controlling blood sugar level.
Insulin stores the excess amount of blood glucose in the liver as glycogen and in the case of low sugar glycerol is converted to glucose from fats. Pancreatic juice contains sodium bicarbonate to regulate acidity and the amylase enzyme helps in digesting starch. The liver stores various nutritional substances such as vitamins and iron and others and release them in blood plasma.
The answer is D!!! What was the purpose of Miller and Urey's experiment?
A. to determine the number of biological molecules on Earth
B. to determine whether prokaryotes have cell membranes
C. to find out if prokaryotes evolved from eukaryotes
D. to see if simple molecules can combine spontaneously
Hint: It's D :)
Answer:
D. To see if simple molecule can combine spontaneously
Explanation:
Thanks :)
What might analysts be able to use tunable lights for?
This is for a forensics class.
Explanation:
crime scene investigators and forensic examiners are now using "alternate light sources" to identify residues and prints which cannot be seen under normal light conditions.........could there be a role for them to this end?
The process of translation refers to: Question 14 options: Converting information in a DNA sequence into the complementary mRNA sequence Converting information in a DNA sequence into the amino acid sequence of a protein Converting information in a mRNA sequence into a DNA sequence of a protein Converting information in a mRNA sequence into the amino acid sequence of a protein Converting information in a tRNA sequence into the amino acid sequence of a protein
Answer:
Converting information in a mRNA sequence into the amino acid sequence of a protein
Explanation:
The correct answer would be Converting information in a mRNA sequence into the amino acid sequence of a protein.
The inheritance of a gene requires that the DNA sequence of such gene is first transcribed to mRNA in a process known as transcription and then translated to protein in a process known as translation.
During the translation process, the genetic codes in the nucleotide sequence of the mRNA are converted to their respective amino acids joined together by peptide bonds to form a protein.
Hence, the correct answer is that translation is a process that involves the conversion of information in a mRNA into the amino acid sequence of a protein.
