Which of the following is an example of applied research?
A shoe company develops a new material that can better absorb impact for a new running shoe.
A scientist studies the way human cells react to changes in temperature to better understand how
people live in extreme climates.
A teacher leads her students though the dissection of a frog so they can study different organ
systems.
An astronomer is curious about telescope lenses and builds a lens that is a composite of several
different materials.
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Answer:
The example is "A scientist studies the way human cells react top changers in temperature to better understand how people live in extreme climates"
Related Questions
What is sensation and perception?
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source cited: https://guides.hostos.cuny.edu/bio140/14-47
the skull of a mammal has no sharp canine teeth. the large teeth in the back of the jaw are very flat. what did this mammal eat?
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Mammals' skulls, as well as their dentition, may provide us with information about their diet. The skull of a mammal that lacks sharp canine teeth and has broad, flat molars, is likely to be herbivorous.
Furthermore, the molars' flat shape indicates that the mammal is probably a grazer that consumes grass or tough vegetation. In contrast to carnivorous mammals that use their sharp, pointed canine teeth to tear flesh and their molars to shear meat into smaller pieces, herbivorous mammals use their flat, wide molars to grind and crush tough vegetation.
The molars are often covered in ridges and crests, which increase the surface area of the teeth, allowing them to break down the fibrous plant material into smaller pieces that can be more easily digested. The molars are frequently continually expanding throughout the animal's life, allowing the animal to continue to grind up vegetation even as its teeth become worn down due to constant use.
The skull and teeth of a mammal provide important clues about its lifestyle, feeding habits, and ecology, and scientists can learn a lot about past animals by studying their bones.
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DDT, once hailed as one of the greatest scientific developments of the modern world, began to fall out of use after 25-30 years of widespread application. Insect resistance contributed to its decline. Scientists were interested in how insects, specifically mosquito populations, were developing resistance after exposure. Many researchers suspected the GSTe2 gene to be involved with resistance based on gene mapping. In order to test their hypothesis, scientists isolated a population of mosquitoes and maintained them in a lab under constant conditions for four months. At the four month mark, the insects were exposed to low levels of DDT daily for an additional four months. At month eight, the population of mosquitoes was split in half and isolated in separate chambers. Half of the population continued to be exposed to low levels of DDT daily for the remainder of the experiment, while half of the mosquitoes were removed and kept in an environment with no DDT exposure for the remainder of the experiment.
DNA samples were taken from the population(s) at months: eight, sixteen, twenty, and twenty-four. The DNA samples were analyzed and tested for mutations to the GSTe2 gene. Vertical bars in the figure represent two standard errors of the mean (SEM). a) Propose a possible hypothesis the researchers were testing. b) Propose an explanation for the results seen after the populations were separated. c) Describe the change in genetic variation over time once the population is split in half. Justify your response based on the SEM. d) When DDT was being used widely, it took approximately 6-7 years before scientists began seeing resistance in mosquito populations. Propose one reason for why it took so long to see resistance in nature in comparison to how long it took to see resistance in this experiment.
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The researchers were testing the hypothesis that the GSTe2 gene is involved in insect resistance to DDT.
The populations were separated suggest that the mosquitoes exposed to low levels of DDT for the full eight months developed a higher frequency of mutations in the GSTe2 gene compared to the mosquitoes that were not exposed to DDT during the last four months of the experiment.
The change in genetic variation over time once the population is split in half shows that the mosquitoes exposed to DDT had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed mosquitoes.
Natural populations of mosquitoes are subject to a variety of environmental factors, including competition, predation, and disease, which can influence the rate at which resistance develops.
DDT was widely used as an insecticide in the mid-20th century to control a variety of insect pests, including mosquitoes that transmit diseases such as malaria and yellow fever. However, over time, many insect populations, including mosquitoes, developed resistance to DDT, rendering it less effective as an insecticide.
The researchers in this experiment were interested in understanding the genetic basis of insect resistance to DDT. Specifically, they suspected that the GSTe2 gene played a role in this process, based on previous gene mapping studies. To test their hypothesis, they exposed a population of mosquitoes to low levels of DDT for four months, after which they split the population in half and continued to expose one group to DDT while keeping the other group in a DDT-free environment.
The results of the experiment showed that the group of mosquitoes exposed to DDT for the full eight months had a higher frequency of mutations in the GSTe2 gene compared to the non-exposed group. This suggests that exposure to DDT may have selected for mosquitoes with mutations in the GSTe2 gene, which provided them with a selective advantage in the presence of the insecticide.
The changing genetic variation over time is evidenced in the graph by the widening of the vertical bars, which represent two standard errors of the mean. This indicates that as time progressed, the genetic variation in the DDT-exposed group increased, likely due to the selection pressure imposed by the insecticide.
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Can someone answer this question for me
Answers
Answer:
The cell membrane
Explanation:
Answer:
The biologist is most likely studying plasma or cell membranes. As within these membranes, there are both a combination of lipids and proteins arranged in a fluid mosaic manner, in which the 2 main layers arranged are phospholipids.
Explanation:
On the photomicrograph of bone below, identify all structures listed in the key to the left.
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On the Structure of Compact Bone, the order of labelling are:
canaliculilamellacentral canallacunaWhat are these part known for?The photomicrograph shows a cross-section of a Haversian system, which is the basic unit of compact bone. The Haversian system consists of a central canal surrounded by concentric layers of bone called lamellae.
The osteocytes are located in lacunae that are arranged in rows along the Haversian canal. The canaliculi connect the lacunae to each other and to the Haversian canal. The central canal contains blood vessels and nerves that supply the osteocytes. The compact bone is arranged in columns called osteons.
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Are allele frequencies the same as genotype frequencies?
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No.
Definition. Genotype frequency refers to the number of individuals with a given genotype divided by the total number of individuals in the population while allele frequency refers to the frequency of occurrence or proportions of different alleles of a particular gene in a given population.
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tion 5 of 50
An investigation is an example of
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An investigation is an example of research.
What is research?Research is the process of gathering and analyzing information in order to answer a question or solve a problem. Investigations are a type of research that is typically conducted to gather evidence about a crime or other incident. Investigators may gather evidence through interviews, document reviews, and physical examinations. They may also use scientific techniques, such as DNA testing or fingerprint analysis.
The goal of an investigation is to gather enough evidence to determine what happened and who is responsible. This information can then be used to bring charges against the perpetrator or to take other necessary steps.
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summarize how the yellow-pea trait disappeared in one generation and reappeared in the next.
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Which is an interconnection of food chains in an ecosystem?
food web
trophic chain
energy web
producer web
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Answer:
ITS A
Explanation:
Food web is an interconnection of food chains in an ecosystem. Therefore, the correct statement is option A.
What is food web?A food web is an ecosystem's intricate network of connected food systems. It shows how nutrients and energy move between organisms in an ecosystem.
Producers, consumers, and decomposers make create food webs, which illustrate how these creatures are related to one another by their interactions with one another's prey.
The arrows in a food web represent the flow of nutrients and energy from one organism to another. Typically, the energy flow begins with the sun or another primary energy source, passes through producers like plants, and then continues to consumers like herbivores and carnivores. A food web consists of many interconnected food chains and shows the flow of energy in an ecosystem.
Therefore, food web is an interconnection of food chains in an ecosystem which is constituted by producers, consumers, and decomposers.
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Which type of environmental scientist is likely to study methods of water conservation and decontamination?
a. Hydrologist
b. Toxicologist
C. Oceanographer
d. Ecologist
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Answer:
A. Hydrologist
Explanation: A hydrologist is the environmental scientist who is likely to study methods of water conservation and decontamination. He is the person who carries out research on circulating, distributing and studying physical properties of the underground surface of the earth, and its surface waters.
8. All of the following are true of surface currents except (1 point)
Othey are influenced by wind.
Othey can exist in large lakes.
Othey are found in the top 1,300 feet of the ocean.
Othey have the same movement as thermohaline currents.
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Water current involves surface or deep water circulation. Surface currents are influenced by winds and occur in the top 1313 feet of depth. Statement 4 is false. They have the same movement as thermohaline currents.
-----------------------------------------------
Many different factors can produce water currents in lakes and oceans. Some of these factors are
winds, temperature, salinity, earthquakes, and storms.When talking about water circulation, there are two main types of movements,
Surface circulation, which occurs from 0 to 400 meters deep (up to 1313 feet aproximatelly)Deep circulation, which occurs at depths that super 400 meters.Surface circulation is closely related to horizontal water movements, while deep circulation is related to vertical ones.
→ Horizontal water movements
They are produced by the action of different winds on the surface. Superficial winds, influenced by the Coriolis effects, are responsible for most of the marine currents. Trade winds push the water surface forward western direction in the equator, while western winds produce currents that move water to the east at higher latitudes.By the Coriolis effect, water masses are deviated to the west or the east, depending on the hemisphere, resulting in large clockwise circular turns in the Northern Hemisphere and the opposite direction in the Southern Hemisphere.Warmer currents travel from the tropics, along the continental margins, carrying warm water to higher latitudes, and as they do so, these water masses get cooler, producing cold currents.
→ Vertical movements
They can be related to density, salinity, and temperature. Variation of these factors causes thermohaline currents, which move water vertically, transporting cold water with nutrients from the bottom to the surface.According to this resumed framework,
→ Surface currents ⇒ horizontal movement ⇒ up to 400 m depth ≅ 1313 feet
→ Deep currents ⇒ vertical movement ⇒ more than 400 m depth.
OPTIONS
they are influenced by wind ⇒ TRUE they can exist in large lakes ⇒ TRUE they are found in the top 1,300 feet of the ocean ⇒ TRUE they have the same movement as thermohaline currents ⇒ FALSE------------------------------------------------------------------------
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Mark this and return
How is energy related to the change of state
represented by the model?
O Atoms gain energy as a gas changes to a solid.
Atoms gain energy as a gas changes to a liquid.
Atoms lose energy as a gas changes to a solid.
Atoms lose energy as a gas changes to a liquid.
Answers
The energy is related to the change of state represented by the model by: D. Atoms lose energy as a gas changes to a liquid.
What is Atoms?A model of the transition from a gas to a liquid is shown in the accompanying image. It demonstrates how atoms or molecules change from being widely scattered as in a gas to being concentrated as in a liquid.
The atoms in this process move from a higher-energy state to a lower-energy state releasing or losing energy in the process. The most common kind of energy loss is heat.
Therefore the correct option is d.
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Why does blood appear to be red?
Answers
Answer: Hemoglobin
Explanation:
State the difference between the reproductive cycles of flowering plants and rockweeds. Specify for each stage the number of chromosomes (2n-diploid, or n-haploid).
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Answer: I Do not know
Which statement about people's rights is correct? All US residents ages 18 or older can vote in US elections. O Naturalized citizens have the same rights as natural-born citizens. Only natural-born citizens have the right to run for public office in the US. Immigrants do not have the right to security provided by the US government.
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Voting is open to all citizens of the US who are at least 18 years old. Every human being is entitled to life, liberty, and personal safety. rights to one's own security, liberty, and life.
What does it mean to be naturally born?Natural delivery is giving birth without the use of any medications, instead employing pain-relieving techniques like relaxation and controlled breathing. Many people believe that considering pregnancy and delivery as natural occurrences rather than as "brave" acts qualifies as having a natural childbirth.
What's the difference between a normal birth and a natural one?For some women, a natural delivery is going through the entire labor process without any medicinal painkillers, giving birth vaginally, and possibly going through the third stage too. The term "natural birth" is used operationally by midwives and obstetricians.
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Answer:
b
Explanation:
I need help please before 12
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Answer:
anyyyy girrllll online hereeeere m soo bored
Substance P:
O is a pain detractor
O is a pain enhancer
has nothing to do with pain
O is a dietary supplement
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Substance P is a neuropeptide that plays a significant role in the transmission and modulation of pain signals in the nervous system. It acts as a pain enhancer rather than a pain detractor.
When tissue damage or inflammation occurs, substance P is released by sensory neurons in the peripheral nervous system. It acts as a neurotransmitter and binds to specific receptors called neurokinin-1 receptors (NK-1 receptors) in the central nervous system and peripheral tissues. This binding triggers a cascade of events that amplify the pain signal and contribute to the perception of pain.
Substance P is involved in several processes related to pain:
1. Sensitization of pain receptors: Substance P increases the sensitivity of pain receptors, known as nociceptors, making them more responsive to painful stimuli. This sensitization can lead to an increased perception of pain.
2. Inflammation and immune response: Substance P promotes inflammation by inducing the release of histamine, cytokines, and other inflammatory mediators. It also attracts immune cells to the site of injury or inflammation, further contributing to the pain response.
3. Transmission of pain signals: Substance P is involved in transmitting pain signals from the peripheral nerves to the spinal cord and brain. It helps relay pain information to higher brain regions, contributing to the conscious experience of pain.
While substance P is primarily associated with pain, it also has other functions in the body. It is involved in regulating blood flow, neurogenic inflammation, mood regulation, stress responses, and gastrointestinal functions. However, its role as a pain enhancer is well-established and has been a focus of research in the field of pain management and pharmacology.
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List 5 cause and effect signal words
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Therefore
Hence
Because of
Since
Causal
(Hope this helps :))
What were the options given by Francis Collins to reconcile evolution and faith?
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The options given by Francis Collins to reconcile evolution and faith was in his argument that advances in science present “an opportunity for worship,” rather than a catalyst for doubt.
who is Francis Collins?Francis Collins is known as an American physician-geneticist who discovered the genes associated with a number of diseases and led the Human Genome Project.
Francis Collins believed in seeing God as the creator of the universe – in all of its amazing complexity, diversity and awesome beauty – then science, which is, of course, a means of exploring nature, also becomes a means of exploring God’s creative abilities.
Francis Collins wanted to reconcile faith and evolution, and has been lauded for showing how a religious believer can rise to the highest levels of the scientific establishment while keeping his faith intact and while integrating his faith with his science.
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What is the difference between a microbe and a germ? Why is using soap better for cleaning microbes than just using water? What does science say about using antibacterial soaps?
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A microbe is a broad term that refers to any microscopic organism, including bacteria, viruses, fungi, and protozoa. A germ, on the other hand, refers to a pathogenic microbe that can cause disease.
Why is using soap better for cleaning microbes than just using water?Using soap is better for cleaning microbes than just using water because soap can break down the outer layers of microbial cells, causing them to lose their structural integrity and ultimately die.
Antibacterial soaps contain chemicals such as triclosan or benzalkonium chloride that are designed to kill or inhibit the growth of bacteria.
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which of the following statements regarding action potentials generated in a neuronal membrane is false?
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The statement regarding action potentials generated in a neuronal membrane that is false is "Action potentials are generated only when the neuron's resting potential is at least -80mV." Action potentials are actually generated when the neuronal membrane reaches a threshold potential of around -55mV.
The other statements, "Action potentials are all-or-none events," "Action potentials are initiated at the axon hillock," and "Action potentials are self-propagating," are all true.
In summary, action potentials are generated in a neuronal membrane when the threshold potential is reached, they are all-or-none events, they are initiated at the axon hillock, and they are self-propagating. The false statement is that action potentials are generated only when the neuron's resting potential is at least -80mV.
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Chemostat culture with protozoa Tetrahymena thermophila protozoa have a minimum doubling time of 6.5 hours when grown using bacteria as the limiting substrate. The yield of protozoal biomass is 0.33 g per g of bacteria and the substrate constant is 12 mg l1 . The protozoa are cultured at steady state in a chemostat using a feed stream containing 10 g l1 of nonviable bacteria. (a) What is the maximum dilution rate for operation of the chemostat
Answers
Answer:
The correct answer is - 3.3 g/L.
Explanation:
It is known that if endogenous metabolism is not important then,
µnet = µmax = 0.693/doubling time.
Given:
doubling time = 6.5 hr, therefore,
µmax = 0.693/6.5 = 0.1/h
Formula:
First, maximum dilution rate Dmax,
Dmax = µmax*[S0]/{Ks + [S0]}.........(1)
Steady-state cell concentration, X
X = Yx/s{[S0] - KsD/(meumax - D)..........(2)
Solution:
Yx/s = 0.33 g/g-substrate;
Ks = 12 x 10-3 g/L; [S0] = 10g/L,
puting value in (1)
Dmax = 0.1 * 10 / (12 x 10-3 + 10)
= 0.1/h.
Now it is given that operating D is 1/2 of Dmax, therefore,
D in our case will be = 0.05/h
concentration of protozoa cells from equation (2).
Therefore, X = 0.33*{10 - 12 x 10-3 * 0.05/(0.1 - 0.05)} = 3.3 g/L.
which is a result of increasing acidity of seawater?
A: algae population increase dramatically
B:Coral expel algae living with them
C: shells and skeletons of marine organisms weaken
Answers
The bones and shells of marine species may become more brittle as seawater's acidity rises. This is because the ocean becomes more corrosive as a result of the acidification process, which makes it possible for these species' calcium carbonate structures to break down.
As seawater absorbs carbon dioxide from the atmosphere, a process known as "ocean acidification" causes seawater's pH to fall. The chemical reaction between carbon dioxide and water, which results in the production of carbonic acid, is to blame for this.
The health and survival of marine species may be significantly impacted if the ocean's acidity rises.
Many marine animals use calcium carbonate to construct their shells or skeletons, including mollusks, corals, and some plankton. A mineral with a high sensitivity to pH fluctuations is calcium carbonate.
The concentration of hydrogen ions in the water rises with increasing ocean acidity, which can disintegrate the calcium carbonate structures of these creatures.
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Levels of HDL, LDL, and triglycerides in the blood: are simple traits. are influenced by many different genes. tend to cluster in one chromosome. are influenced by the same set of genes. are X linked.
Answers
Answer:
are influenced by many different genes
Explanation:
A quantitative trait is a given phenotypic trait influenced by the combined effects of many genes and its environment. A quantitative trait locus (QTL) is a region of DNA (i.e., a locus) associated with the variation of a quantitative trait. In the last years, some QTLs correlated to the variation of HDL, LDL, and triglycerides levels were mapped in different genomic regions, thereby showing that these complex traits are regulated by the interaction of multiple genetic loci.
___ fill with the blood returning to the heart
Answers
Answer:
Im pretty sure its A
Explanation:
Explain how proteins are involved in mitosis. WILL GIVE BRAINLY
Answers
Explanation:
Mitosis and endocytosis are two fundamental cellular processes essential for maintaining a eukaryotic life. Mitosis partitions duplicated chromatin enveloped in the nuclear membrane into two new cells, whereas endocytosis takes in extracellular substances through membrane invagination. These two processes are spatiotemporally separated and seemingly unrelated. However, recent studies have uncovered that endocytic proteins have moonlighting functions in mitosis, and mitotic complexes manifest additional roles in endocytosis. In this review, we summarize important proteins or protein complexes that participate in both processes, compare their mechanism of action, and discuss the rationale behind this multifunctionality. We also speculate on the possible origin of the functional reciprocity from an evolutionary perspective.
1. What are the benefits of cleaning something to a level of cleanliness beyond what is required? What are some possible disadvantages of doing so?
2. In 2001, endospores of Bacillus anthracis, the causative agent of anthrax, were sent to government officials and news agencies via the mail. In response, the US Postal Service began to irradiate mail with UV light. Was this an effective strategy? Why or why not?
3. Why is the use of skin disinfecting compounds required for surgical scrubbing and not for everyday handwashing?
Answers
Answer: 1: maintaining health dis: killing ALL microbes is bad they can build resistance, stripping all microbes can result in death. 2: yes; UV light can be used to sterilize; cells must be exposed to the direct light source because UV light doesn't penetrate surfaces unless direct contact. 3: it is more persistent than iodophors, providing long lasting antimicrobial activity and acts faster, over using daily would damage and build resistance. If it's good enough can i get a brainliest pls
Which life process is not required for the survival of a individual organism nutrition, reproduction, respiration, or synthesis
Answers
Answer:
Reproduction
Explanation:
its not necessary for the survival of an individual organism but it is important to reproduce for the survival of the species
Answer:
Synthesis
Explanation:
The diagram shows the life cycle of a dragonfly. The adult
stage occurs out of water, and the fertilized egg and
nymph stages occur in water.
Adult (dragonfly)
K
Nymph
Which change in the environment might increase the number of nymphs
hatching from eggs?
Fertilized egg
A. Unusually dry period
OB. Particularly rainy season
OC. Particularly windy days
OD. Widespread pesticide use
Answers
B. Particularly rainy season- Increased rainfall would provide more water for the eggs to hatch in, resulting in more nymphs.
What is rainfall?Rainfall is the amount of precipitation that falls from the sky in any given period of time, usually measured in millimeters. Rain can come in a variety of forms, including light drizzle, heavy showers, and thunderstorms. Rainfall is an important part of the water cycle as it provides moisture to the atmosphere and helps to replenish water sources on the ground, such as rivers, lakes, and aquifers. In addition, rainfall plays a significant role in agriculture and can be beneficial or damaging depending on its amount and timing. Rainfall also affects climate, weather, and ecosystems, and can influence the availability of food, water, and other resources.
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Let’s review the normal baroreceptor reflex. Drag the labels onto the figure to create a flow chart of how the baroreceptor reflex would respond to decreased mean arterial pressure. View Available Hint(s)
Answers
Mechanoreceptors known as baroreceptors enable the autonomic nervous system to communicate information generated from blood pressure.
Thus, Baroreceptors come in two varieties: low-pressure volume receptors and high-pressure arterial baroreceptors, both of which are triggered by stretching of the vessel wall.
Carotid sinuses and the aortic arch both include arterial baroreceptors. The atria, ventricles, and pulmonary vasculature all include low-pressure volume receptors (also known as cardiopulmonary receptors).
When you experience something that raises or lowers your blood pressure, the baroreceptor reflex keeps it constant. Your blood pressure is swiftly returned to normal range after a complicated sequence of procedures.
Thus, Mechanoreceptors known as baroreceptors enable the autonomic nervous system to communicate information generated from blood pressure.
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