a student has two flasks of growing algae. to one flask he adds some phosphorus, while he leaves the other flask alone. he monitors population numbers of the algae daily for three weeks. at the end of this time both populations are stable, but the phosphorus-containing flask has 10 times more algae. which statement is true?
Answers
The environment's carrying capacity was raised by the phosphorous.
Numerous things can limit the size of the population. Competition, predation, parasitism, illnesses, and overcrowding are limiting factors that depend on density. But density-independent limiting variables include things like unexpected weather and natural disasters.
Fires, natural disasters (such as earthquakes, floods, and tornadoes), and the results of pollution fall under the category of density independent limiting factors. There is no relationship between the population's size and the likelihood of dying from any of these limiting factors.
An ecosystem's biodiversity increases with increasing inputs. It's true that ecosystems are dynamic and that more input results in more biodiversity.
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Related Questions
In 1912, Alfred Wegener hypothesized that all the continents were once joined together in one giant landmass. This is known as the hypothesis of continental drift. Which of the following contained clues that led Wegener to his hypothesis?
Group of answer choices
a. land features, fossils, and climate
b. mid-ocean ridges, fossils, and climate
c. land features, fossils, and sea-floor spreading
d. mid-ocean ridges, fossils, and weather
Answers
Answer: c. Land features, fossils and sea floor spreading.
Explanation: First, climate and weather were not associated with Wege er’s reasoning.
Land features: an important clue for Wegener was in the current shapes of South America and Africa. Looking at them on a map, one can see their adjacent coastlines are almost a perfect fit.
Fossils: He noted that, for example, the same fossils appeared in Scotland and the east coast of North America
Sea-floor spreading: the discovery of seafloor spreading under the Atlantic Ocean gave Wegener a clue as to how continents could move apart.
Which of the following is not a level or component of bioidiversity?
O species
genetic
population
O ecosystem
Answers
Answer:
genetic
Explanation:
does genetic and population separeted
3. 7
Explain how a code of ethics in sports can encourage positive
behaviour by players. In your response, also indicate how this could
encourage the youth to participate in sports.
(1 x 3) (3)
Answers
A code of ethics in sports promotes positive behavior among players and encourages youth participation by providing clear guidelines for acceptable conduct, fostering a culture of fairness, respect, and integrity.
The code of ethics serves as a concise summary of the values and principles that players should adhere to in their sports activities. By clearly outlining expected behavior, it helps players understand the boundaries and standards they need to meet. This clarity minimizes ambiguity and reduces the likelihood of negative behaviors such as cheating, aggression, or disrespect. Players are more likely to engage in fair play, show sportsmanship, and treat opponents, officials, and teammates with respect when they are aware of the ethical expectations.
Additionally, a code of ethics plays a crucial role in attracting and retaining youth participants in sports. Parents and guardians are more inclined to enroll their children in sports programs that prioritize character development and emphasize ethical conduct. Knowing that their children will be part of an environment that promotes positive values and teaches important life lessons can alleviate concerns about negative influences or inappropriate behavior. Youth who engage in sports programs that prioritize a code of ethics are more likely to develop qualities such as teamwork, discipline, respect, and fairness, which can positively impact their personal growth and future endeavors.
In summary, a code of ethics in sports encourages positive behavior among players by providing clear guidelines and expectations, promoting fairness, respect, and integrity. It also attracts youth participation by assuring parents and guardians that their children will be part of an environment that prioritizes character development and teaches important life lessons.
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Phenotypic variation in tail length of mice has the following components: VA = 3; VD = 1; VEp = 1; VE = 4, VGE = 1 where VA is additive genetic variance, VEp is epistatic variance and VE is other environmental variance and VGE is genotype by environment interaction. What is the broad sense heritability (H2) for tail length in this population? a. 0.5 b. 0.2 c. 0.4 d. 0.6 e. 0.3
Answers
The broad-sense heritability (H2) for tail length in this population is 0.5, which corresponds to option (a) in the given choices.
To calculate the broad-sense heritability (H2) for tail length in this population, we need to follow these steps:Step 1: Identify the variance components provided.- Additive genetic variance (VA) = 3
- Dominance genetic variance (VD) = 1 (although not asked, it's essential for calculating H2)
- Epistatic variance (VEp) = 1
- Other environmental variance (VE) = 4
- Genotype-by-environment interaction (VGE) = 1Step 2: Calculate the total genetic variance (VG).
VG = VA + VD + VEp
VG = 3 + 1 + 1
VG = 5Step 3: Calculate the total phenotypic variance (VP).
VP = VG + VE + VGE
VP = 5 + 4 + 1
VP = 10Step 4: Calculate the broad-sense heritability (H2).
H2 = VG / VP
H2 = 5 / 10
H2 = 0.5The broad-sense heritability (H2) for tail length in this population is 0.5, which corresponds to option (a) in the given choices.
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Sexual interaction is the only way STDs can be transmitted. (9.2.9). Select one: a. True b. False
Answers
Answer:
No, it is not the only way,
hope that helps, have a great day
use the periodic table land your knowledge of the element to wright down the names of the following elements 1. the only metal that is liquid at room temperature and has the symbol Hg. 2. The semi metal that lies to the left of phosphorus 3. the metal that lies below baron 4 the gas with the atomic number 7? 5 The metal with the atomic number 19 6. the element that is part of the compound table the symbol Na
Answers
1. Mercury (Hg)
2. Antimony (Sb)
3. Lead (Pb)
4. Nitrogen (N)
5. Potassium (K)
6. Sodium (Na)
Who was Carolus Linnaeus and what did he
create?
Answers
Answer: Swedish naturalist and explorer Carolus Linnaeus was the first to frame principles for defining natural genera and species of organisms and to create a uniform system for naming them, known as binomial nomenclature.
He was a Swedish naturalist and explorer, and he created binomial nomenclature.
The emerging field of ______ biology focuses on studying living organisms as a whole as well as understanding the workings of the parts of an organ.
Answers
The emerging field of systems biology focuses on studying living organisms as a whole as well as understanding the workings of the parts of an organ.
What is Systems biology?This is defined as the study of the interactions and behavior of the components of biological entities such as atoms, cells etc using computational and mathematical analysis.
This is a newly developed branch of science and it helps scientists to understand the different ways in which organs and molecules work and their overall effect the body system.
This is therefore the reason why systems biology was chosen as the most appropriate choice.
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What is the best evidence to support that an occluded front is occurring?
1.A warm and cold front collide and remain motionless.
2.Cool air sinks and warm air rises, creating a convection current.
3.A cold front pushes warm air upward, and the cold front collides with a cold front.
4.A warm front pushes into the area, creating clear skies and warm weather.
Answers
Answer:
A cold front pushes warm air upward and the cold front collides with a cold front
What helps to transport materials across the membrane, can open and close, or even change shape?
proteins
glucose
cells
Answers
Describe what happened. When was there more potential energy in the system? when was there more kinetic energy in the system?.
Answers
Potential lnergy increases when charges move in the opposite direction of electric force. If kinetic energy increases, potential energy decreases.
Potential energy is the energy an object has due to its position relative to other objects, voltages within it, its electric charge, or other factors. There are two types of potential energy, and they are: gravitational potential energy, elastic potential energy. Kinetic energy is the form of energy an object or particle has for its motion, equal to half the mass of the body times the square of its velocity. The temperature of an object is directly related to its kinetic energy.
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What is an important function of mitochondria (the powerhouse of the cell)?
converting sunlight into energy in ATP
converting glucose (sugar) into chemical energy in ATP
converting sunlight into glucose
Answers
Answer:
option b is correct pls mark brainliest if u r girl
What does DNA replication mean and why is it important?
Answers
Explanation:
DNA replication is the process by which a double-stranded DNA molecule is copied to produce two identical DNA molecules. Replication is an essential process because, whenever a cell divides, the two new daughter cells must contain the same genetic information, or DNA, as the parent cell.
describe how acute leukemias can be differentiated through the use of phenotyping cells by using flow cytometry technology. include the flow cytometry methodology, instrument parts and how the instrument makes this differentiation possible.
Answers
Under a microscope, certain poisons can be detected on the leukemic cell's surface. These are typically antigens or markers found on the surface of white blood cells.
The clusters of differentiation (CD) markers are the name given to these antigens. Such indicators' existence or absence aids in the leukemia diagnosis.
The antigen patterns or molecules that a normal cell expresses on its surface define its maturity or type. To identify them, these markers have unique CD numbers allocated to them.
As a result of the flow cytometry, a diagnosis can be made by comparing the discovered CD counts to regular and abnormal cells. In leukemia, the cell surfaces of CD5, CD19, CD23, CD20, Kappa, and Lambda markers are typically present, whereas prognostic markers CD38 and D49d are also present.
A suspension of monodisperse single, unclumped cells is absorbed by flow cytometers, which then run the cells one at a time (single file) via a fluorescent light ray where every cell passes through, before being counted, sorted, and then described.
The fluidics, optics, and electronics are the three primary parts of a flow cytometer.
What is flow cytometer?
To recognize and measure the physical and chemical characteristics of a population of cells or particles, a method known as flow cytometry is used. A fluid-suspended sample containing cells or other particles is delivered into the flow cytometer apparatus during this technique.
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Which ecosystem services can also affect the biodiversity of an ecosystem?
Answers
The ecosystem services that can also affect the biodiversity of an ecosystem include pollination, nutrient cycling, and pest control.
How do pollination, nutrient cycling, and pest control contribute to the biodiversity of an ecosystem?Pollination helps maintain plant biodiversity by ensuring that different plant species are able to reproduce and create new genetic diversity. Nutrient cycling helps support the growth of a diverse range of plants, which in turn provides habitat and food for other species. Pest control helps prevent the over-consumption of certain plant or animal species, which can help maintain a healthy balance of biodiversity within an ecosystem.
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● Hypothesis: Revise 1
To help your investigation, here is some more data about the farm.
How should I include my data?? Will give points and I picked natural selection
Answers
To write an inclusive hypothesis from investigation, it should be structured with Mechanism of Evolution, Hypothesis and Data.
How to hypothesize?Mechanism of Evolution
The mechanism of evolution that I think caused the increase in FQ resistance is natural selection. Natural selection is the process by which organisms that are better adapted to their environment are more likely to survive and reproduce. In this case, the bacteria that are resistant to FQ are more likely to survive and reproduce because they are not killed by the drug. This means that the population of bacteria will become more resistant to FQ over time.
Hypothesis
My hypothesis is that the increase in FQ resistance in the bacteria on the farm is due to natural selection. I believe that this is because the bacteria that are resistant to FQ are more likely to survive and reproduce, which means that the population of bacteria will become more resistant to FQ over time.
Data
The new data supports my hypothesis because it shows that the number of bacteria that are resistant to FQ has increased. The data also shows that the bacteria that are resistant to FQ are more likely to be found in the environment where the FQ is being used. This suggests that the bacteria are evolving to become resistant to the FQ.
How to Include the Data
You can include the data in your hypothesis by stating that the increase in FQ resistance is due to the fact that the bacteria that are resistant to FQ are more likely to survive and reproduce. You can also include the data by showing a graph of the number of bacteria that are resistant to FQ over time.
This is an example of how to include the data in the hypothesis:
I hypothesize that the increase in FQ resistance in the bacteria on the farm is due to natural selection. This is because the bacteria that are resistant to FQ are more likely to survive and reproduce, which means that the population of bacteria will become more resistant to FQ over time. The data supports this hypothesis because it shows that the number of bacteria that are resistant to FQ has increased. The data also shows that the bacteria that are resistant to FQ are more likely to be found in the environment where the FQ is being used. This suggests that the bacteria are evolving to become resistant to the FQ.
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When stimulated by _____, arterioles supplying the digestive system ______, which decreases blood flow to digestive organs.
Answers
When stimulated by Sympathetic nerves, arterioles supplying the digestive system Constrict which decreases blood flow to digestive organs. The vascular system, also known as the circulatory system, consists of the vessels that transport blood and lymph throughout the body.
What is Sympathetic nerves ?The role of your sympathetic nervous system in responding to dangerous or stressful situations is well known. In these situations, your sympathetic nervous system activates to increase your heart rate, deliver more blood to areas of your body that require more oxygen, or perform other actions to assist you in escaping danger.
The autonomic nervous system regulates the unconscious actions of the body. The primary function of the sympathetic nervous system is to stimulate the body's fight or flight response. It is, however, constantly active at a fundamental level in order to maintain homeostasis.
The sympathetic nervous system is antagonistic to the parasympathetic nervous system, which stimulates the body to "feed and breed" as well as "rest-and-digest."
Pre-ganglionic and post-ganglionic neurons are involved in the transmission of any signal through the sympathetic system.
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When a mosquito bites you and consumes some of your blood it is
acting as a(n) ____.
a. endoparasite
b. parasitoid
c. ectoparasite
d. metaparasite
Answers
When a mosquito bites you and consumes some of your blood, it is acting as an ectoparasite. So, option C is accurate.
An ectoparasite is an organism that lives on the external surface of its host and derives its nourishment or resources from the host's body. These parasites can be found on various animals, including humans, and they typically feed on blood, skin cells, or other bodily fluids.
In the case of a mosquito, it feeds on the blood of its host by piercing the skin with its mouthparts and sucking blood. The mosquito does not live inside the host's body but rather feeds externally. Therefore, the correct answer is option c, ectoparasite.
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serotonin and norepinephrine levels in the the brain are altered by drugs like prozac and zoloft. these are known as
Answers
Serotonin aids in mood regulation including all other functions. While norepinephrine helps stimulate the brain and increase energy and awareness.
Their levels in the brain are altered by drugs like prozac and zoloft and they are known as antidepressants.
Antidepressants like prozac and zoloft are known to be effective in treating some disorders including mood disorders and bipolar disorders. They are able to do this through the regulation of the amount of these neurotransmitters (serotonin and norepinephrine) in the brain.Learn more: https://brainly.com/question/3563597
_________is the breaking down of biomolecule components (food) for use by cells.
Answers
Answer:
Chemical Digestion
Explanation:
a living organism that possesses a novel combination of genetic material obtained through the use of modern biotechnology
Answers
A living organism that possesses a novel combination of genetic material obtained through the use of modern biotechnology refers to a genetically modified organism (GMO). GMO has been engineered to exhibit new traits or characteristics that can be beneficial for various purposes, such as increased crop yields or improved resistance to environmental stressors.
The process goes as follows:
1. Living organism: This refers to any organism that exhibits the characteristics of life, such as growth, reproduction, and metabolism. Examples include plants, animals, and microorganisms.
2. Novel combination: This implies the introduction of new or unique genetic traits that were not previously present in the organism's natural genetic makeup.
3. Genetic material: This refers to the DNA (deoxyribonucleic acid) of an organism, which carries the instructions for the development, functioning, and reproduction of the organism.
4. Modern biotechnology: This involves the use of advanced scientific techniques and technologies to manipulate an organism's genetic material. Examples of modern biotechnology techniques include gene editing, gene cloning, and recombinant DNA technology.
To create a GMO, scientists use modern biotechnology techniques to insert specific genes from one organism into the DNA of another organism. This results in a novel combination of genetic material, which provides the GMO with new traits or characteristics that were not previously present. For example, a crop plant might be genetically modified to be resistant to certain pests or to tolerate specific herbicides.
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The thick-walled arteries close to the heart are called muscular arteries.
TRUE OR False?
Answers
False. The thick-walled arteries close to the heart are actually called elastic arteries, not muscular arteries.
Elastic arteries, such as the aorta and pulmonary arteries, have a high proportion of elastic fibers in their walls.
These elastic fibers allow these arteries to stretch and recoil in response to the pressure changes generated by the heartbeat, helping to maintain a smooth blood flow.
Muscular arteries, on the other hand, are medium-sized arteries found farther away from the heart. They have a greater proportion of smooth muscle in their walls, which allows them to regulate blood flow to specific areas by constricting or dilating the blood vessels.
Thus, the statement "The thick-walled arteries close to the heart are called muscular arteries." is FALSE.
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In the Kinyoun acid-fast staining method, highly concentrated ______ is used to penetrate the cell wall and colorize acid-fast bacterial cells.
Answers
The Kinyoun acid-fast staining method is a type of differential staining technique used to differentiate acid-fast bacteria from non-acid-fast bacteria. The acid-fast staining method is based on the ability of acid-fast bacteria to resist decolorization with acid-alcohol after staining with basic dyes like methylene blue.
In this method, highly concentrated carbol fuchsin is used to penetrate the cell wall and colorize acid-fast bacterial cells.Carbol fuchsin is a combination of basic fuchsin and phenol. The phenol component helps to penetrate the waxy cell wall of acid-fast bacteria, making it possible for the dye to enter the cells. Once inside the cells, the basic fuchsin dye binds to the mycolic acids in the cell wall, giving the acid-fast bacteria a bright red color.Non-acid-fast bacteria, on the other hand, are unable to retain the carbol fuchsin dye after decolorization with acid-alcohol. This results in the loss of the red color from the non-acid-fast cells. These cells are then counterstained with a contrasting color, such as methylene blue, which stains them blue.In summary, the Kinyoun acid-fast staining method uses highly concentrated carbol fuchsin to penetrate the cell wall and colorize acid-fast bacterial cells. This technique helps to differentiate acid-fast bacteria from non-acid-fast bacteria based on their ability to resist decolorization with acid-alcohol.
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what problem does a cell encounter as it grows larger
Answers
You are a scientist on the soloman islands. You are assigned with making recommendations
Answers
Biodiversity Conservation: The Solomon Islands are home to rich biodiversity, containing singular environments and endangered class.
What is the recommendations?It is important to plan out biodiversity preservation through system which controls organization and administration of protected fields, in the way that nationwide parks and sea reserves
Climate Change Adaptation: The Solomon Islands are vulnerable to the impacts of temperature change, containing climbing ocean levels, raised frequency of extreme weather occurrences, and sea acidification. It is main to expand and implement agreement actions that focus on marshy care, tenable land use preparation, and trend-resilient foundation
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Which would best be described as abiotic?
water in a stream
Ofish in a stream
O bacteria in the soil
roots in the soil
Answers
. An astronaut weighs 120 Newton’s on the moon, where the strength of gravity is 1.6 N/Kg. What is her
mass in Kg?
Answers
Answer:
75 kg
Explanation:
answer is above
what is element bond in simple words
Answers
Answer:
a chemical bond is a lasting attraction between atoms or molecules
why moderate fever is nessesary for health
Answers
Answer:
yes moderate fever is necessary
Explanation:
You get a fever because your body is trying to kill the virus or bacteria that caused the infection. Most of those bacteria and viruses do well when your body is at your normal temperature. But if you have a fever, it is harder for them to survive. Fever also activates your body's immune system.
Which is not part of the conducting portion of the respiratory system?
A. Alveoli
B. Trachea
C. Larynx
D. Nasal cavity
E. Bronchi
Answers
The conducting section of the respiratory system does not include alveoli.
What does the term "respiratory system" mean?The respiratory system is a biological system found in both plants and animals that is made up of certain organs and structures used for gas exchange. The anatomy and physiology that contribute to this vary considerably depending on the size of the creature, its habitat of habitation, and its evolutionary history.
The respiratory system is what?Your lungs, airways, and blood arteries are part of it. The respiratory system also includes the muscles that move your lungs. Together, these elements aid in the body's oxygen circulation and waste gas elimination.
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