Answers
Answer:
C
Explanation:
The experimental and control group differ by only one factor for a scientist, and that is the independent variable.
A scientist will always try to isolate the effects that are due to a variable and keep every other variable constant. The variable that is manipulated in order to measure its effect is known as the independent variable. A control group usually forms the basis for measuring the effects of the independent variable. While the independent variable is varied in experimental groups, it kept at the zero level for the control group.
The correct option is, therefore, C.
Related Questions
Item 4 Which statement is true? 1 foot = 10 inches 1 foot = 12 inches 1 foot = 16 inches 1 foot = 36 inches
Answers
Answer:
1 foot = 12 inches
Explanation:
Please help i am giving brainliest
What is homeostasis?
A. the ability of an organism to maintain a relatively stable internal environment.
B. the production of a hormone by an endocrine gland that works on another endocrine gland
C. a series of events that monitor how hormones work in the body
D. a process in which a change in the environment causes a response that returns conditions
to their original status
No dam links
Answers
Answer:
A
Explanation:
Homeostasis is basically the organism being able to live without need of an outside source
Answer:
ok i answered the last one and yess i got it
What is homeostasis and how is it maintained?
Homeostasis refers to the body's ability to maintain a stable internal environment (regulating hormones, body temp., water balance, ect.). Maintaining homeostasis requires that the body continuously monitors its internal conditions.
Explanation:
hope it helps
Two lizard species both forage in fig trees in the Caribbean. To study potential competition between the species, you observe a sample of both species, observing the fraction of time they spend in the upper half and bottom have of the trees, as well as the fraction of their diet comprised of insects vs. fruit. Below are your data.
Answer choices:
A. Character displacement is occurring between these two species
B. Resource partitioning is occurring between these two species
C. These species appear to have a mutualistic relationship
D. These species appear to have a parasitic relationship
E. Competitive exclusion is likely to occur where these species are found together
Answers
Resource partitioning occurs when two species that share the same niche, make use of resources differently in order to avoid competition. Option B) Resource partitioning is occurring between these two species.
What are competitive exclusion, resource partitioning, and character displacement?Intra- or interspecific competition is an ecological and evolutive process very common in nature.
Competition between different species might be due to the same resource use (food, territory, shelter, etcetera). When a resource is useful for two or more species, and is limited, they compete to gain it.
The principle of competitive exclusion states that different species with the same requirements sharing the niche can not coexist indefinitely based on the same limited resource.
When two competing species coexist, this is because of resource partitioning or niche differentiation.
Differentiation of effective niche is closely related to character displacement.
Character displacement is the result of interspecific competition, in which two or more species that live in the same habitat manage to avoid competition by developing different traits.
Morphological divergence, or any adaptative trait development, fixated genetically, is the product of niche segregation.
Species tend to differentiate morphologically in the presence of strong competitors. Traits divergence favors coexistence in the same place.
In the exposed example, we can see that,
both species (A and B) spend most of their time in the upper part of the tree. species A mainly preys on insects, while species B mainly feeds on fruits.These populations can share the same niche because of resource partitioning. Most of them feed in the upper part, but to avoid competition, one population feeds on insects, and the other one feeds on fruits.
This resource partitioning might lead to the occurrence of character displacement related to the feeding and digestive apparatus and predation strategies. However, the table does not reflect this information.
The correct option is B. Resource partitioning is occurring between these two species.
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Which of the following statements about electromagnetic radiation is true?
The shorter the wavelength, the more energy is carried.
The sun produces a low-energy radio waves.
The sun produces high-energy gamma rays.
All statements are correct.
Answers
Each of the claims is true. Let's look at the following as an explanation for this:
A wave's energy is directly inversely related to its frequency. As a result, as frequency increases, wavelength decreases and wave energy increases. Solar radiation, which is a subset of the vast range of energy known as the electromagnetic radiation spectrum, is how the entire amount of solar energy that reaches the Earth. Infrared, radio waves, X-rays, gamma rays, ultraviolet light, and visible light are all types of solar radiation. One technique to transport heat is by radiation.
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first one to answer right will be mark brainly
Answers
Which best describes the association beetween the carbon cycle plants and animals?
Answers
Answer: Plants fix carbon and release oxygen, and animals release carbon and use oxygen.
Explanation: Done this before
Where are the A, B and RH antigens located
Answers
Answer: The A, B, and Rh antigens are located on the surface of red blood cells.
Explanation:
QUESTION 16 Why does spoiled food become more sour? Spoilage microbes produce acid The nutrients in juice react with its packaging More hydrogen ion is consumed by spoilage microbes Enzymes in juice generate more hydroxide
Answers
Answer:
Spoilage microbes produce acid
Explanation:
When food becomes spoiled or is unprotected, bacteria will invade the food. These types of bacteria are called spoilage bacteria. The bacteria will multiply by consuming the nutrients from the food and grows very rapidly. In certain conditions, the invading bacteria will produce acids that protects them and creates a barrier for other microbes. This acid is what gives spoiled food a sour taste.
The picture to the right shows Meiosis 2, which is responsible for creating: A. Haploid daughter cells with unique chromosomes. B. Diploid daughter cells with unique chromatids. C. Diploid daughter cells with unique chromosomes. D. Haploid daughter cells with unique chromatids. Reset Selection
Answers
Answer:
D. Haploid daughter cells with unique chromosomes.
Explanation:
This is because during Mitosis 2 the sister chromatids within the two daughter cells separate, form four new haploid gametes.
D. Haploid daughter cells with unique chromatids are responsible for creating.
What does meiosis 2 create?Meiosis II starts with two haploid parent cells and ends with four haploid daughter cells, maintaining the number of chromosomes in each cell.
What are the products of meiosis and meiosis II?Thus, the products of meiosis II are four haploid cells that contain a single copy of each chromosome. In mammals, the number of viable gametes obtained from meiosis differs between males and females. In males, four haploid spermatids of similar size are produced from each spermatogonium.
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A river erodes and deposits sediments on its banks. Which of these happens to the river as the process of erosion and deposition continues over time?
frequent flooding of its banks
the path of the river will become curvier
an increase in the fish population
a change in the amount of river water
Answers
Answer:
I am not 100% sure but I think it is 'frequent flooding of its banks'.
Explanation:
The path of the river will become curvier as the process of erosion and deposition continues over time. Hence, option B is correct.
What is erosion?The removal of soil, rock, or dissolved material from one area on the Earth's crust and subsequent transport to another region for deposition is known as the erosion process.
Rainfall, runoff, melting snow or ice, irrigation, and soil detachment and movement are the main contributors to water erosion. The production of agricultural and forestry products may be threatened by excessive erosion. In addition to having an effect on these structures, erosion can also pollute land surfaces.
The path of the river will become curvier as the process of erosion and deposition continues over time. Hence, option B is correct.
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What are 2 similarities chromosomes you get from parents
Answers
The two similarities between chromosomes that you get from your parents are Genetic Material and Number of Chromosomes.
What more should you know about genetic materials and number of chromosomes you get from parents?In terms of Number of chromosomes: Every Humans have 23 pairs of chromosomes, for a total of 46 chromosomes. Each parent contributes 23 chromosomes to their child, for a total of 46.
in tems of Genetic material: The chromosomes that you get from your parents contain the same genetic material. This is why you look like your parents and why you have inherited some of their traits.
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Which of the following helps protect biofilms from issues such as drying out and predators
a.) Extracellular polymeric substances
b.) Quorum sensing
c.) Becoming sessile
d.) Autoinducers
Answers
Extracellular polymeric substances help protect biofilms from issues such as drying out and predators. Option A
Biofilms are complex communities of microorganisms that adhere to surfaces and form a protective matrix. They can be found in various natural and artificial environments, such as riverbeds, medical devices, and plumbing systems. Biofilms provide advantages to the microorganisms within them, including protection from environmental stresses and predators.
One of the key components that helps protect biofilms is extracellular polymeric substances (EPS). EPS are complex mixtures of polysaccharides, proteins, and DNA that are secreted by microorganisms within the biofilm. These substances form a matrix that encases the cells, providing structural support and protecting the community.
EPS help biofilms resist drying out by retaining water and preventing desiccation. The polysaccharides in EPS can absorb and retain moisture, creating a hydrated environment within the biofilm even in dry conditions. This is crucial for the survival of the microorganisms within the biofilm.
Additionally, EPS serve as a barrier against predators. The matrix formed by EPS can make it difficult for predators, such as protozoa or grazing organisms, to access and consume the microorganisms within the biofilm. It acts as a physical defense mechanism, limiting the exposure of the microorganisms to predation.
While quorum sensing, becoming sessile (immobile), and autoinducers are all important mechanisms and processes associated with biofilms, they do not directly address the protection of biofilms from drying out and predators. So Option A is correct.
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In this lesson you have learned how earths four major systems are affected by a natural disaster such as a volcano eruption Now it is time to see what you’ve learned Answer the following question in the space below In what ways does a volcanic eruption affect each of earths four major systems Think about what you have learned and the diagram you previously created your answer should include the following
Answers
Answer:
Explanation:
A volcanic eruption can affect each of Earth's four major systems in the following ways:
Geosphere: Volcanic eruptions can alter the physical landscape of an area by depositing ash, lava, and other materials on the ground. This can create new landforms, such as mountains, and alter existing ones. The eruption can also release gases and chemicals into the air that can have a long-lasting impact on the soil and water quality.
Atmosphere: Volcanic eruptions release gases, such as carbon dioxide, sulfur dioxide, and water vapor, into the atmosphere. These gases can cause air pollution, acid rain, and climate change. The ash and dust from an eruption can also affect the air quality, reducing visibility and posing a health hazard to humans and animals.
Hydrosphere: Volcanic eruptions can affect the water cycle by altering the amount and quality of water in the surrounding area. The ash and debris from an eruption can contaminate rivers, lakes, and other bodies of water, making them unsuitable for drinking or irrigation. The heat from an eruption can also cause water to evaporate, leading to drought conditions.
Biosphere: Volcanic eruptions can have a significant impact on the plants and animals that live in the surrounding area. The ash and debris from an eruption can destroy habitats, disrupt food chains, and cause widespread death and disease. The gases and chemicals released during an eruption can also be harmful to both plant and animal life.
In summary, a volcanic eruption can affect the geosphere, atmosphere, hydrosphere, and biosphere of an area. The impacts can be long-lasting and far-reaching, affecting not just the physical landscape, but also the climate, water cycle, and living organisms of the region.
You are a graduate student in the lab of a famous fly geneticist. You need to analyze a batch of mutant flies that were recently created in her laboratory to identify the single gene that is most likely mutated in each of the flies. Drag the mutations on the left to the appropriate blanks on the right to complete the sentences.
a. knirps (a gap gene)
b. hunchback (a gap gene)
c. hedgehog (a segment-polarity gene)
d. wingless (a segment-polarity gene)
e. kruppel (a gap gene)
f. even-skipped (a pair-rule gene)
1. Mutant fly F has predominantly lost abdominal structures, which is likely the result of a mutation in_____.
2. The wings are missing in mutant fly L, which is likely the result of a mutation in______.
3. Thoracic and abdominal structures are missing in mutant fly Q. The gene most likely responsible for this mutation is______.
4. Segment-sized sections of every other segment are missing in mutant fly Z. One likely candidate gene is_______.
5. Mutant fly X has lost the head and thorax. The gene most likely responsible for this mutation is_______.
6. The mutation observed in mutant fly O resulted in defects within the anterior or posterior regions of each segment. The gene that most likely caused this mutation is_______.
Answers
Answer:
knirps (a gap gene)
wingless (a segment-polarity gene)
kruppel (a gap gene)
even-skipped ( a pair-rule gene)
hunchback (a gap gene)
hedgehog (a segment-polarity gene)
Explanation:
The gap, segment-polarity and pair-rule genes play central roles in controlling embryonic development of arthropods. In the first place, the gap genes are associated with the formation of contiguous body segments, thereby mutations in these genes result in gaps in the normal body plan of the embryo. For example, in Drosophila melanogaster, mutations in the knirps, Krüppel and hunchback genes result in deletion of body segments. These genes are also known to regulate segment polarity genes, which determine the polarity of the embryonic parasegments by modulating Wnt and Hedgehog signaling pathways. Finally, the pair-rule genes work together with gap genes to control embryonic development of alternating body segments.
21. Which of the following best models the process that occurs during the formation of an ATP molecule to provide energy the cell needs to carryout cellular processes?ADP → ATP + phosphate + energyATP → ADP + phosphate + energyADP + phosphate + energy from food molecules → ATPATP + phosphate + energy from food molecules → ADP
Answers
Between the following examples, the one that is a best model to explain the process that occurs during ATP formation is:
ADP + phosphate inorganic + energy from food molecules = ATP
Construct a food chain using the following wildlife scenario.
In the north woods where the Gray wolf is the apex predator species, clover plants are the preferred forage of Cottontail rabbits. Rabbits are a critical prey species for wolves, especially young, adolescent wolves.
Answers
Answer:
Gray wolf->Rabbit->Clover plant
Explanation:
The wolf eats the rabbit and the rabbit eats the clover plants
Question 2
Now collect your data, starting with your resting pulse rate. Follow these steps, and write your results in
the table.
1. Sit as still as possible for 10 minutes, and then measure your pulse for 10 seconds. Repeat this test
two more times.
2. For each trial, multiply the measure by 6 to find the number of beats per minute.
3. Take an average of the three values to get an average resting pulse rate per minute.
Answers
Resting heart rate (RHR) is a measurement of the number of times a person’s heart beats per minute (bpm) when they are in a relaxed state. A higher RHR is associated with various cardiovascular issues such as high blood pressure, stroke, heart attack, and arrhythmia.
As a result, it is vital to assess RHR routinely to monitor the health of your cardiovascular system. A simple and effective method to measure RHR is by following the steps below:
Step 1: Sit still for 10 minutes Sit quietly in a comfortable position for 10 minutes before taking the pulse. Sit still during this time, as any movement, whether physical or emotional, will increase your heart rate and result in an inaccurate measurement.
Step 2: Measure pulse for 10 seconds After the ten-minute resting period, locate the pulse point, typically located on the wrist or the neck, and record the pulse rate for ten seconds. Count the number of beats during this time, then multiply the total by six to calculate the number of beats per minute (bpm).
Step 3: Repeat the test twice more Perform two more tests after completing the first one. This will give you a total of three tests to calculate the average of. This procedure helps to ensure the results are accurate and reliable.
Step 4: Calculate average resting pulse rate Find the average resting heart rate by taking the sum of the three test results and dividing it by three. By performing this procedure, one can obtain a reliable and accurate measurement of their resting heart rate (RHR).
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What’s the correct answer for this question?
Answers
Answer:
those answer was correct and write is called correct answer
when you open a solid room air fresher the solid slowly loses mass and volume. how do you think this happens
Answers
Hope that helps :)
A hummingbird may need to consume up to 50% of its body weight in sugar each day, just to meet its energy needs. Some of this energy is stored and some is used for metabolic activities, but much of the energy is
A)
converted into amino acids needed for the production of starch
B)
released as heat energy back into the hummingbird's environment
C)
changed into radiant energy, which can be used by plants for photosynthesis
D)
used to synthesize inorganic compounds necessary for cellular respiration
Answers
Answer:
A
Explanation:
Estimate the sum of the masses: 56.9kg, 43.9kg, 60.5kg, 29.8kg
Answers
Answer:
191.1 kg.
Explanation:
The total mass of all these objects can be determined by adding all the masses present in the question. 191.1 kg is the value of total masses when the given masses such as 56.9kg, 43.9kg, 60.5kg and 29.8kg are added with each other. This value is considered as the total sum of all masses so we can say that the total value is obtained after all the masses are combine or added together.
Which of the following identifies the field of study that involves all the elements of plant structure and
metabolism that allow plants to sustain life and reproduce?
O plant systems
O photosynthesis
O agronomy
O plant evolution
Answers
The field of study that involves all the elements of plant structure and metabolism that allow plants to sustain life and reproduce is "plant systems".
What are plant systemsPlant systems is the scientific field that studies the internal and external structures of plants, their physiological processes, and their interactions with the environment. It involves the study of plant anatomy, plant physiology, plant ecology, and plant development.
Plant anatomy deals with the structure and organization of plant tissues, organs, and cells, while plant physiology studies the functions and processes that occur within the plant, such as photosynthesis, respiration, and nutrient uptake.
Plant ecology examines the relationships between plants and their environment, including interactions with other organisms, while plant development focuses on the growth and differentiation of plant cells, tissues, and organs throughout their life cycle.
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A. Plant systems
What is the field of study plant systems ?The field of study that involves all the elements of plant structure and metabolism that allow plants to sustain life and reproduce is commonly known as plant systems.
Plant systems include :
The study of plant anatomy PhysiologyBiochemistry Genetics EcologyEvolutionTherefore, The study of plant systems aims to understand how plants function at the molecular, cellular and organismal levels and how they interact with their environment. This knowledge is important for improving crop yields developing new plant-based products, and addressing global challenges such as food security and climate change.
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10 points! please help
Answers
Answer:
2,3,4,5
Explanation:
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2. The green dot indicates a trait that is shared
by every animal on the diagram. Suggest a trait
that would apply.
Answers
Aquatic ecosystems support more primary producers proportional to their area than terrestrial ecosystems.
Answers
Answer:
True
Explanation:
The statement, "Aquatic ecosystems support more primary producers proportional to their area than terrestrial ecosystems" is true . This is because aquatic ecosystems, such as oceans, lakes, and rivers, contain more available nutrients for plant growth in the form of dissolved minerals and organic matter, allowing for a greater density of primary producers (plants and algae) per unit area. Additionally, the buoyancy provided by water allows aquatic plants to grow more upright, exposing a greater surface area to sunlight. However, it is important to note that terrestrial ecosystems can have greater overall primary productivity, as well as greater diversity and complexity of plant life.
An individual has a mutation in the gene that codes for brown eye color. This results in blue eyes. Choose the correct explanation for how this mutation affects the individual's traits.Multiple choice:
The error in the DNA sequence results in an error in the mRNA molecule during transcription, the error in the mRNA molecule results in an incorrect amino acid in the brown pigment protein which makes it non-functional. The resulting trait is blue eyes.
The error in the DNA sequence results in an error in the mRNA molecule during transcription, the error in the mRNA molecule results in an incorrect nucleic acid in the brown pigment protein which makes it non-functional. The resulting trait is blue eyes.
The error in the mRNA sequence results in an error in the DNA molecule during transcription, the error in the DNA molecule results in an incorrect nucleic acid in the brown pigment protein which makes it non-functional. The resulting trait is blue eyes.
The error in the mRNA sequence results in an error in the DNA molecule during transcription, the error in the DNA molecule results in an incorrect amino acid in the brown pigment protein which makes it non-functional. The resulting trait is blue eyes.
Answers
Option d) The error in the DNA sequence results in an error in the mRNA molecule during transcription, the error in the DNA molecule results in an incorrect amino acid in the brown pigment-protein which makes it non-functional. The resulting trait is blue eyes.
Central doctrine The fundamental tenet of molecular biology is the idea that genetic information can only go from DNA to RNA to protein or from RNA to protein directly.
A Francis Crick invention. And in his own words, "I dubbed this thought the core dogma, I suppose for two reasons. With the sequence hypothesis, I had previously used the obvious term hypothesis, but I also intended to make the case that this new assumption was more important and potent.
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Full Question: An individual has a mutation in the gene that codes for brown eye color. This results in blue eyes. Choose the correct explanation for how this mutation affects the individual's traits.
a. The error in the mRNA sequence results in an error in the DNA molecule during transcription, the error in the DNA molecule results in an incorrect amino acid in the brown pigment-protein which makes it non-functional. The resulting trait is blue eyes.
b. The error in the DNA sequence results in an error in the mRNA molecule during transcription, the error in the DNA molecule results in an incorrect nucleic acid in the brown pigment-protein which makes it non-functional. The resulting trait is blue eyes.
c. The error in the mRNA sequence results in an error in the DNA molecule during transcription, the error in the DNA molecule results in an incorrect nucleic acid in the brown pigment-protein which makes it non-functional. The resulting trait is blue eyes.
d. The error in the DNA sequence results in an error in the mRNA molecule during transcription, the error in the DNA molecule results in an incorrect amino acid in the brown pigment-protein which makes it non-functional. The resulting trait is blue eyes.
Earth’s gravity only affects bodies orbiting Earth. true or false
Answers
Answer:
false; orbiting astronauts must be experiencing the force of gravity. Without this force, there would be no centripetal force and no orbit.
Explanation:
Which is required for both anaerobic respiration and aerobic respiration?
oxygen
water
mitochondria
glucose
Answers
Answer:
Glucose
Explanation:
Both of these processes start with glycolysis- which is the breaking of glucose.
Answer:
d
Explanation:
How many times must the germ cell split in half to create four gametes?
Answers
Answer:
he germ cell split in half to create four gametes
Explanation:
Germ cells are the reproductive cells found in the male and female species. They are the cells that are responsible for the formation of the offspring through reproduction.
Germ cell splits two times in half to produce four gametes.
Germ cells undergo meiosis in which one parent splits to produce four gamete cells.Meiosis in the germ cells occurs in two steps called meiosis I and meiosis II.In the first stage of meiosis I, the homologous pairs of the chromosomes separates and at the end daughter cells are produced.In the meiosis II stage, further division occurs and the haploid sets of four gametes are produced.Since the division occurs two times in meiosis four daughter cells that are haploid (n) is produced.Therefore, germ cells divide two times to produce the gamete cells.
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what happens if the cells of the cerebellum become damaged?
Answers
Answer:
Damage to the cerebellum can lead to: 1) loss of coordination of motor movement (asynergia), 2) the inability to judge distance and when to stop (dysmetria), 3) the inability to perform rapid alternating movements (adiadochokinesia), 4) movement tremors (intention tremor), 5) staggering, wide based walking (ataxic gait), 6) tendency toward falling, 7) weak muscles (hypotonia), 8) slurred speech (ataxic dysarthria), and 9) abnormal eye movements (nystagmus).
Explanation: