The individual bacteria that cannot synthesize histidine in the culture are likely to be genotypically and phenotypically different from the rest of the culture.
What is mutation?Mutation refers to sudden changes to the DNA sequence of organisms. Mutation can be silent without producing any physical effect.
A mutation can also be harmful to organisms. Once a modification is made to the DNA of some individual organisms out of the entire population of the same organism, such individuals are said to be mutants.
If the mutation has physical manifestations, the mutants will be both genotypically and phenotypically unique from the rest of the population.
If the mutation is silent, the mutants will be genotypically unique from the rest of the population, not phenotypically.
In this case, some individual bacteria in the entire culture are not able to synthesize histidine. Thus, these individuals will be different from the rest of the population both in genotype and phenotype.
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Consider the following planned experiment. Which variable is being tested in this experiment
The variable is being tested in this experiment is vitamins.
The correct option is C.
What is an experiment?An experiment can be described as a procedure carried out to support or refute a hypothesis, or determine the efficacy or likelihood of something previously untried.
The factor Vitamin is being tested in this experiment. For an experiments to be valid, it is necessary that we have an experimental group as well as a control group.
In this experiment under consideration, all other factors have the same experimental group as well as the same control group except for the factor vitamin.
The factor vitamin has a experimental group in which the particular vitamin is given to the object of test and a control group in which the vitamin is not given to the object.
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Full question here:
Consider the following planned experiment.
Which variable is being tested in this experiment?
A. Housing
B. Type of food
C. Vitamins
D. Amount of water
NEED HELPP ASAP PLEASEE!! :)
7. Why is it impossible for a paper clip to contain the enzyme catalase?
Answer:
Because they have to use for the rate of the reaction rate of the chemical reaction like other temperature affect the reaction of the engine catalysis.
Answer:
Hydrogen peroxide separate to catalase to prevent reaction from starting before the desired temperature
Explanation:
A young woman suffering from prosopagnosia, an inability to identify faces, a disorder of object recognition associated with damage to the _____________ lobe of the brain.
A young woman suffering from prosopagnosia, an inability to identify faces, a disorder of object recognition associated with damage to the Occipital lobe of the brain.
The occiptal lobe is known as the visual processing area of the brain. In the brain, It sits at the back of the head. Part of it major functions are that: it is responsible for visual perception, including colour, form and motion. Damage to the occipital lobe can include: Difficulty with locating objects in environment. Difficulty with identifying colours (Colour Agnosia).
Prosopagnosia could occur when there is a damage to the occiptal lobe.
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Air enters the nasal cavity. It goes into the pharynx and moves into the trachea. Air enters the right and left bronchus, where it is then delivered to the lungs. After air enters the alveoli, oxygen moves through the wall of the alveoli and into the blood. Then, carbon dioxide and water pass from the blood out into the air through the alveoli, also.
What process is being described?
Circulation
Excretion
Immune response
Respiration
The process describes in the question about the passage of air from nasal cavity to the alveoli is: respiration.
Alveoli is also called the air sac. It is a very minute structure present in various numbers all around the lungs. The purpose of alveoli is to increase the surface area of the lungs so that more and more air can be respired through the lungs. The cell wall of alveoli is very thin in order to mediate the exchange of gases.
Respiration is the process of gaseous exchange in the body of all living organisms. Several organisms have different kind of organs for respiration. The different organs are: lungs, gills, skin, etc.
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You are asked to perform a fermentation test with your unknown bacteria, using a technique known as stab culturing. What can you conclude if the test came back purple?.
While performing a fermentation test with an unknown bacteria by using stab culturing technique. if the test result came out purple you can conclude that the culture is basic and your unknown bacteria cannot metabolize arabinose.
Originally sold as a sweetener, arabinose inhibits the action of sucrase, an enzyme in the small intestine that converts sucrose to glucose and fructose.
Agar plates and stab cultures are similar, except stab cultures are created in test tubes using solid agar. Inoculation needles or pipette tips are used to stab the agar's center, introducing bacteria. Then the bacteria flourish in the hole, the purple result means the bacteria present in the culture cannot consume the arabinose.
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when na⁺ diffuses into the cell, the cell becomes more depolarized. na diffusing into the cell causes more na gates to open, which is a positive feedback loop.
The cell becomes more depolarized when Na+ diffuses into the cell, this a positive feedback loop.
The membrane potential depolarizes when it gets less negative (more positive). Depolarization may result from the opening of channels that allow positive ions to enter the cell. An illustration would be the opening of Na+ entry channels in cells. Potential for action A sufficiently substantial depolarization event, possibly brought on by several concurrent depolarizing inputs, can result in the generation of an action potential. In contrast to a graded potential, an action potential is an all-or-nothing event: whether it happens or not, it will always be the same magnitude. When a depolarization causes the membrane voltage to rise beyond a threshold level, an action potential is initiated. The voltage-gated Na+ channels in the membrane open at this threshold, allowing a flood of sodium ions to enter the cell. The quick increase in membrane potential caused by the influx of sodium ions triggers a positive feedback cycle that is powered by the voltage-dependent activation of the Na+ conductance.
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Which individual below would be considered to be homozygous?
A. Tt
B. bb
C. Bb
Answer:
A
Explanation:
because
why not
Answer:B. bb
Explanation:
how do plants try to reduce water loss at night- include word stomata
Explanation:
Stomata open during the day in most of the plants so automatically, respiration will slow down during the night.
Describe and compare the sources of Earth's External Energy. (earth and space science)
The sun is Earth's primary source of external energy. It perfectly heats our planet to the point where life can flourish.
Sunlight is a clean, renewable source of energy. It is a sustainable resource, meaning it doesn't run out, and can be maintained because the sun shines almost every day.
In one second the sun converts 4 million tons of mass into energy in the form of heat and electromagnetic radiation.
The solar constant is how much sunlight power reaches the earth. On average, this value is roughly 1400 watts-per-square-meter. In terms of energy, this equates to about 1.8 × 10¹⁷ joules/second.
Out of the average, total amout of mass the sun converts to energy, the earth captures only 6.25 × 10-⁸%. This is an extremely small percentage , but if it all could be harnessed to use for our electricity needs, we would have more than enough.
Solar energy is perennial and non-polluting.
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What is the process by which early autotrophic prokaryotes produced oxygen.
They created stromatolites, which added oxygen to the atmosphere.
Autotropic prokaryotes :Prokaryotes that can reproduce independently produce organic compounds from carbon dioxide. Heterotrophic prokaryotes, in contrast, get their carbon from organic substances. The terminologies that describe how prokaryotes receive carbon and energy can be combined to further complicate the picture.
Phototrophs, which are autotrophic organisms that transform solar energy into chemical energy, first appeared within a billion years after the birth of the Earth.
Autotrophic eukaryote :Since plants can produce their own sustenance, they are referred to as autotrophs. Through the process of photosynthesis, plants create glucose using water, carbon dioxide, and solar energy. Some protist species also use photosynthesis to produce energy.
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13. Freud believed that selfish needs reside in which level of consciousness?
A. Conscious level
B. Animus
C. Eros
D. Unconscious level
Freud believed that selfish needs reside in option D. Unconscious level.
What three levels of consciousness did Freud propose?Famous psychologist Sigmund Freud argued that competing psychological forces that operate at the:
The preconsciousThe consciousThe unconsciousThey are all the levels of consciousness that are constantly and uniquely interact to produce behavior and personality.
The characteristics of the Unconscious level are:
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Answer: unconscious level
Explanation:
in which two ways do plant cells use the sugar made in photosynthesis?
A. to store inorganic matter
B. to produce phosphate group
C. to supply the plant with energy for life
D. to make other types of organic molecules
Answer:
C, and D
Explanation:
Hope it helps!
The two ways in which plant cells use the sugar made in photosynthesis are C. to supply the plant with energy for life and D. to make other types of organic molecules.
C. to supply the plant with energy for life: The sugar produced during photosynthesis, typically in the form of glucose, serves as a primary source of energy for plant cells. Through cellular respiration, the sugar is broken down in the mitochondria, releasing energy in the form of ATP (adenosine triphosphate). ATP is the energy currency of cells and is used for various metabolic processes necessary for plant life, such as growth, reproduction, transport of molecules, and maintaining cellular functions.
D. to make other types of organic molecules: Plant cells utilize the sugar produced in photosynthesis as a building block for the synthesis of other organic molecules. Glucose serves as a precursor for the biosynthesis of complex carbohydrates, such as starch and cellulose, which are important for energy storage and structural support in plants. Additionally, the sugar is used to synthesize lipids, proteins, nucleic acids, and other biomolecules that are essential for various cellular processes, including growth, development, signaling, and defense mechanisms.
By using the sugar produced in photosynthesis to supply energy and as a source of carbon and energy for synthesizing other organic molecules, plant cells ensure their own survival, growth, and overall metabolic functions. This efficient utilization of sugars allows plants to carry out necessary processes and adapt to changing environmental conditions.
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do elements form chemical compounds to become more or less stable
The entire structure above is a 
4. Use what you know about genetic diversity and species diversity to decide which
is the analysis of a single species and which is the analysis of more than one
species. Explain.
Genetic diversity is the analysis of variations in a single species and Species diversity is all the differences between different populations of species which means it is valid for more than one species.
What is Genetic diversity?The entire number of genetic features that make up a species' genetic makeup is referred to as genetic diversity. It can be related to a species' longevity and varies widely based on the number of species present as well as across species.
What is Specifies diversity?Species diversity is the range of species found in a certain community. In order to achieve the same mean proportional species abundance as that seen in the relevant dataset, a certain number of equally abundant species must exist.
Difference between Genetic and Species diversityGenetic diversity and species diversity are fundamentally different from one another because genetic diversity refers to DNA variations among members of the same species, whereas species diversity refers to the number of species in a region. Ecological diversity is the range of ecosystems present in a region.
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How do these two examples contribute to the protection of endangered species?
Wildlife and forensic genetics contribute to the protection of endangered species by ensuring that plants and animals aren't caught and transported illegally and the fingerprinting ensures the organisms are adequately monitored.
What is Endangered species?This refers to the type of organism which has a high risk or chance of becoming extinct in the nearest future as a result of some factors such as over exploitation, habitat destruction etc.
The use of wildlife and forensic genetics ensure that the DNA is gotten from organisms and several investigations and amplifications are done so as to get their origin and the areas in which they are natives of.
This act helps to control the illegal movement of some species to other parts for various purposes such as finances, aesthetics etc. This could lead to over exploitation and endangering of the species which helps to curb it.
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The question link is Read this article, and then briefly describe two specific examples of the use of DNA fingerprinting in wildlife conservation. How do these two examples contribute to the protection of endangered species? https://news.arizona.edu/story/saving-wildlife-with-forensic-genetics
using 250 words discuss how individual’s health behaviors are impacting our society, and Give your solutions on how we can or should address this obesity issue in our nation.
this is supposed to be about obesity and being overweight
Individuals’ health behaviors greatly impact our society because good health behaviors lead to less number of diseases and deaths in society.
How does individual behavior impact health?Behavior modification can contribute to self-control, and enhance health behaviors. Risky behaviors can be eliminated due to physical exercise, controlling weight, good nutrition, or accident prevention. Health behaviors are the actions that affected the health of an individual. They can lead to improved overall health i.e. eating well and have to physically active, and also performing actions that increase the risk of disease including smoking, alcohol intake, and sexual behavior. Positive healthy behaviors can also reduce the risk of losing mobility and independence in life. It also shows that lifestyle behavior is different in different ages which affected the overall health of an individual as well as decreases the life of an individual.
So we can conclude that individual health behaviors greatly affected our society by reducing death rates and health issues.
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which reproductive strategy is described below?
This type of reproductive strategy involves large specialist with few offspring and a large amount of parental care. These organisms are also more likely to become endangered.
K-selected
r-selected
K-selected type of reproductive strategy involves large specialist with few offspring and a large amount of parental care. These organisms are also more likely to become endangered.
K-selected Species- Population fluctuations for K-selected species are often close to a carrying capacity of a habitat. These animals are distinguished by producing few young while providing extensive parental care. Bison, elephants, and people all are k-selected species.
Endangered Species- Animals that are in risk of going extinct because their numbers are declining are referred to as endangered species. Examples include the Indian elephant, Blue whale, Flying squirrel, Red sandalwood, Nannari, Pitcher plant, and Bengal tiger.
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A farmer grows potatoes by cutting them up with eyes and planting the pieces containing the eyes. The means by which the farmer grows potatoes is known as?.
Answer:
this method is known as vegetative method in which potatoes reproduce asexually
13. Which organelle contains genetic information and controls most cell activities?
a. Nucleus
b.) Cell membrane
C. Vacuole
d. Endoplasmic reticulum
14 Most of th
deyz no
nagyon
Answer:a)Nucleus
Explanation: Nucleus of the cell contain chromosomes which have the genetic information and is responsible for most of the cell activities. The nucleus performs cell division which requires replication of the genetic material present in the chromosomes of the nucleus.
explain three others disadvantage of commercial agriculture
Answer:
The disadvantages of commercial agriculture are that it is more damaging to the environment since it uses more chemicals than subsistence agriculture.
Explanation:
what are the answers to these pleaseeee help
Answer:
1. Energy cannot be CREATED or DESTROYED
2. Energy can be CONVERTED into different types of energy (mechanical, chemical, etc.)
Producers make their own food or own energy
A food chain shows energy transfer between organisms
Amount of energy DECREASES as you move up the pyramid
Only 10% of the energy is passed
Explanation:
i'm in bio and this i was just learning
Injecting a potassium solution into a person’s blood is lethal. This is how capital punishment and euthanasia subjects die. Why do you think a potassium solution injection is lethal?.
Answer:
Can stop heart due to irregular heartbeat
Explanation:
Potassium will increase the blood and cardiac concentration of potassium to stop the heart via abnormal herats the leading to cardiac arrest.
what is the terrain, altitude, and humidity of the great barrier reef in austrailia?
Answer: The terrain of the great barrier reef =
The reef actually consists of some 2,100 individual reefs and some 800 fringing reefs (formed around islands or bordering coastlines). Many are dry at low tide; some have islands of coral sand, or cays; and others fringe high islands or the mainland coast of the reef.
The altitude =
The average sea bed level is approximately 40m. The highest point is 1,121m on Hinchinbrook Island. The Great Barrier Reef Marine Park Act 1975 applies to areas between 1,000m below the sea bed to 915m above sea level.
The humidity =
The temperatures are recorded as average maximums of (Celsius) 30 degrees and average minimums of (Celsius) 21 degrees. The Tropical North has an average rainfall of 2010mm (an average of 168mm per month).
Explanation:
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Hii please help i will give brainliest to whoever is correct !! :)
Which of the following is not typically represented by pyramids in ecology?
mass
energy flow
populations in ecology
predator and prey relationships
Answer:
B i think
Explanation:
just guessing it
List the inputs and outputs of photosynthesis. What part(s) of the plant are responsible for taking in each of the output
Water, carbon dioxide, and sunlight-derived energy are the inputs, and glucose and oxygen are the products of photosynthesis.
What is Photosynthesis?In simple terms this process photosynthesis is where plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar.
Which area of the plant is in charge of absorbing each input?Light energy, the substance in the form of water received via the roots, and carbon dioxide absorbed through the leaves are the inputs to photosynthesis.
What are photosynthesis’s inputs and outputs? What enters and leaves a cell during respiration?Herein Water and carbon dioxide are totally changed into oxygen and glucose during the process of photosynthesis. The plant consumes glucose and produces oxygen as this byproduct. Oxygen and glucose are exactly transformed into water and into carbon dioxide during cellular respiration.
By-products of this process includes a total of carbon dioxide, water, and ATP, which is turned into a kind of energy.
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how do cells depend on diffusion and osmosis
Answer: to help regulate the cells, if cells did not perform osmosis and diffusion they would become hypotonic and shrivel up, or hypertonic and burst, osmosis and diffusion help to keep cells isotonic, it also helps with the movement of molecules in and out of the cell and between cells
Explanation:
According to the theory of endosymbiosis, a
mitochondria or chloroplast may have been a prey
species and was engulfed by a cell or it could have
been a parasite that entered the cell WHY do
scientists think that the cell did not destroy or remove
these structures?
Endosymbiotic theory explains about mitochondria and chloroplast in eukaryotic cells that were once aerobic bacteria that were absorbed by a large anaerobic bacteria . This theory define the ancestry of eukaryotic cells.
Endosymbiotic theory states that a prokaryotic cell was consumed or engulfed by a larger cell. By some unknown reason, the prokaryotic organelle was not consumed. Thus , these structure were not destroyed or removed . Mitochondria and chloroplasts provides evidence for their endosymbiotic origin by having their own DNA . It is one of the major determinable factor for origin of life that involves development of a molecule that can store information and catalyze reactions.
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Answer: Because the structures benefit the cells.
Explanation:
The time lapse image below shows the path of the moon throughout one night. What is this event called? Drag and drop the best answer
into the white box.
DRAG & DROP THE ANSWER
moon cycle
solar eclipse
moon phase
lunar eclipses
Answer:
lunar eclipse
Explanation:
Lunar eclipses happen when Earth positions itself between the sun and the moon, casting a shadow across the lunar surface.
Integral proteins are also called _______ proteins
Answer:
Transmembrane proteins!!!
Explanation: