Answer:
Scientists ensure that data is reliable is through replicating experiments.
Explanation:
Scientists ensure that data is reliable enough by repeating the experiments over and over at the same physical conditions and other factors that affect the result of the experiment. The result of the experiment is recorded and evaluated to check the deviation of the results of the experiments. If the results are similar and falls within a prespecified range of the deviation, the result is considered valid. Whereas the experiments which yields much more in consistent results are considered as invalid data. In such ways, scientists ensure that the data is reliable through replicating experiments.W
A
1) Select the best answer.
There are over
different kinds of minerals on the Earth.
4,000
14,000
400
40,000
Answer:
The answer is 3,800 but if you want to estimate/round up it is 4,000 types of minerals on earth
Explanation:
Suppose that Louisa is cut by broken glass during a lab accident. Which is the proper place to dispose of the paper towels that are used to clean up the blood?
Answer:
hazardous waste container
Explanation:
In a lab, hazardous waste container contains all the waste which can be dangerous or infectious. Hence, it should be properly handled and disposed of. Due to the cut in the lab, the blood of Lousia might contain infectious microorganisms. Hence, after cleaning the blood with paper towels, the paper towels should be discarded in the hazardous waste container as the paper towel might contain hazardous microorganisms.
Hi!! Can anyone please help me with the problem linked as a photo? Thanks!!
Two cells will finally be produced .If the parent cell has 2n chromosomes, each daughter cell will have n chromosomes.
1. How many cells will finally be produced?
Two cells will finally be produced.
2. How many chromosomes will be in each cell?
Each cell will have half the number of chromosomes as the parent cell. So, if the parent cell has 2n chromosomes, each daughter cell will have n chromosomes.
3. Sketch one of the final cells, showing its chromosomes.
Here is a sketch of one of the final cells, showing its chromosomes:
+---+---+
| | |
| | |
| | |
+---+---+ +---+---+
| | | | | |
| | | | | |
| | | | | |
+---+---+ +---+---+
This cell has 2n = 4 chromosomes. The chromosomes are arranged in homologous pairs.
The sister chromatids of each chromosome are attached at the centromere.
Additional information about the image:
The image you provided shows the sequence of events in a cell undergoing normal meiotic cell division.
The four diagrams represent the following stages:
Diagram 1: Prophase I. The homologous chromosomes pair up and form tetrads.
Crossing-over, the exchange of genetic material between homologous chromosomes, can occur during this stage.
Diagram 2: Metaphase I. The tetrads align on the metaphase plate.
Diagram 3: Anaphase I. The homologous chromosomes separate and move to opposite poles of the cell.
Diagram 4: Telophase I and cytokinesis. Two daughter cells are formed, each with a haploid set of chromosomes.
After meiosis I, the two daughter cells enter meiosis II. Meiosis II is similar to mitosis, but the sister chromatids of each chromosome separate.
This results in four haploid daughter cells.
Meiosis is essential for sexual reproduction.
It ensures that the offspring have the correct number of chromosomes and that there is genetic diversity in the population.
The numbered boxes in the diagram represent which of the following?
Answer:
The correct answer is : C. 1 - oxygen ; 2 - carbon dioxide.
Explanation:
The given picture shows the occurrence of photosynthesis and cellular respiration in the plant and animal, respectively. Both the processes form a part of the Carbon Cycle.During photosynthesis, the plant utilises the carbon dioxide, obtained from the air, and water, obtained from the soil, along with light energy, to produce its metabolic product, glucose and by-product, oxygen.During cellular respiration, the animal utilises the oxygen released by the plants for oxidising its food and obtaining energy and release carbon dioxide as by-product which is again taken up by the plants for photosynthesis.This is the way by the carbon cycles in the biosphere.
People have cut down forests to clear land for crops, cattle, roads, and cities. These trees are also used for fuel, building material, and paper. The loss of forests have had the following effects (choose all that apply):
A. Causes many species to lose their habitats and food sources, resulting in many becoming extinct or endangered.
B. Creates erosion. The roots of plants hold soil in place to prevent erosion and absorb rainwater, preventing flooding.
C. Creates pollution with the use of DDT, which is a fertilizer that impacts the health of many organisms in the area.
D. Contributes to global warming. The abundant plant life in forests takes in carbon dioxide and stores the carbon as a source of energy. Without forests, the carbon that would have been stored in the trees exists as carbon dioxide and contributes to global warming.
Deforestation leads to habitat loss and species endangerment, soil erosion with subsequent land degradation, and contributes to global warming by reducing the number of trees that absorb carbon dioxide.
The loss of forests has multiple negative effects on the environment, impacting local ecosystems and the planet as a whole. These are some of the primary concerns associated with deforestation:
A. Habitat and species loss: Many species lose their habitats and food sources due to deforestation, leading to extinction or endangerment.B. Soil erosion: The roots of plants, especially trees, are essential for anchoring soil. Without them, soil erosion occurs, which can lead to reduced land fertility, landslides, and flooding.D. Climate change: Forests play a key role in regulating the Earth's climate by absorbing carbon dioxide. When forests are cut down, more carbon dioxide remains in the atmosphere, exacerbating global warming.Although option C mentions DDT, a chemical compound, it is not a direct result of deforestation, but rather an issue related to agricultural practices that may follow deforestation. Therefore, the effects directly related to deforestation are A, B, and D.
what is mRNA?
WILL GIVE BRAINLIEST!!!
A. a DNA strand that cannot be transcribed
B. an RNA copy of a DNA gene
C. a DNA sequence at the start of a gene
D. an RNA segment that does not code for proteins
mRNA is:
B. an RNA copy of a DNA gene
Hope this helps!
Answer:
B. An RNA copy of a DNA gene
a group of organisms that are all of the same species living in the same area and interacting with each other is called
A. a population
B. a community
C. a biome
D. an ecosystem
Answer:
Population
Explanation:
A group of organisms of the same species living in the same area at the same time, and which are capable of interbreeding.
A group of the same species in the same area is called a population. Communities are multiple populations in an area, and ecosystems include these communities plus abiotic factors. The biosphere is the total collection of all Earth's ecosystems.
Explanation:A group of organisms that are all of the same species, living in the same area and interacting with each other, is called a population. When discussing different populations that inhabit a common area and their interactions, we refer to it as a community. In contrast, an ecosystem includes not only the biological community but also the abiotic, or non-living, components of the environment, such as soil nutrients and water. At the highest order, the biosphere comprises all ecosystems and represents life on Earth, extending through land, water, and portions of the atmosphere.
For example, in a forest, all the trees, flowers, insects, and other populations form the forest's community. The forest as a whole is an ecosystem, which includes both biotic (living) and abiotic (non-living) components. At the highest level of organization, the biosphere encompasses all ecosystems on Earth. It includes land, water, and even portions of the atmosphere.
Which of the following is released by a plant following photosynthesis?
A.
oxygen
B.
nitrogen
C.
carbon dioxide
D.
water
oxygen is released in photosynthesis
Answer:
A. Oxygen
Explanation:
plant release oxygen as a by-product of photosynthesis.
How are oxbows and loess similar?
Oxbows and loess both show similarity as they both show the constructive power of erosion. An oxbow lake starts as a curve in a river. Oxbows are formed where the river often empties into another water body. A loess is a sediment which is formed by the accumulation of the wind blown silt.
Answer:
they both the constructive power of erosion
there both formed by river erosion
there both caused by gravity
Explanation:
3. Determine which would have fewer protein and DNA base
sequence differences with humans-chimpanzees or cows.
Answer:
Chimpanzees
Explanation:
Chimpanzees are much more closely related to humans in an evolutionary sense that cows are. Chimpanzees and humans are both primates, characterized by features like advanced cognition, grasping hands and feet, and front facing eyes. In contrast, cows belong to a different of bovine animals.
Because we are evolutionary more related to chimpanzees, that means our DNA has undergone less change over evolutionary time. That means that the sequence will be more similar to chimps
The movement of water molecules through the environment is known as the
Answer:
osmosis
Explanation:
Movement of a solvent (such as water) through a semipermeable membrane (as of a living cell) into a solution of higher solute concentration that tends to equalize the concentrations of solute on the two sides of the membrane.
JUIN HYUNCU
VORSES
Attempt 1 of 5
Which of the following is the correct meaning of transpiration?
the absorption of water through the stomata
the mixing of carbon dioxide and water through in the stomata
the evaporation of water through the stomata
the loss of carbon dioxide through the stomata
Answer:
Option C.
The correct meaning of transpiration is the evaporation of water through the stomata.
Explanation:
In simple words transpiration is defined as the process of loosing of water from plant through somata as water vapor into the environment.Transpiration occurs from the small pores of roots, stem, flowers and leaf through which water vapor from plant is exhaled, evaporated and mixed in the atmosphere.97–99.5% of water in plant is lost through the continuous process of guttation and transpiration.A mother carries one allele of a recessive gene for a disease on an autosome, and the father carries no recessive alleles of the gene for that disease. What is the likelihood of their child having the disease?
A. 0%
B. 50%
C. 75%
D. 100%
What is the likelihood of their child having the disease is:
A. 0%
Explanation:
The mother is heterozygous, thus she has an allele which is recessive and the other allele which is dominant.The father has no recessive allele for the gene.During meiosis in mother , two types of gametes will be produced. One type of gamete will have the recessive allele and the other type of gametes will have dominant allele.During meiosis in father, only one type of gametes will be formed which will have the dominant allele only.In a situation a female gamete with recessive allele is fertilized by a male gamete with dominant allele. The resulting zygote will be heterozygous.The effect of the recessive allele will be masked by the dominant allele and the child will not have the disease.In a situation a female gamete with the dominant allele is fertilized by a male gamete with dominant allele then the resulting zygote will be homozygous for dominant allele and obvioiusly the individual will not have the disease.Thus, in this case we can conclude that there is 0% chance of child having the disease.Which is an example of homeostasis?
A. a snake slithering onto a sunny rock on a cool day
B. a plant undergoing photosynthesis
C. a dog giving birth to puppies
D. a butterfly emerging from its chrysalis
A plant undergoing photosynthesiss is the correct option. thus option A is correct.
What is homeostasis?Chemical signaling occurs in the endocrine system, which is accomplished through the secretion of hormone-like molecules into the extracellular fluid. They bind to chemical receptors in target cells to create specific changes in the body's internal environment, which is referred to as homeostasis.
Photosynthesis helps plants maintain homeostasis by making glucose, which it can use to make energy for other processes or to incorporate in cellular energy.
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Which of the following changes would most likely reduce the rate at which a resource is consumed?
A.increased population
B.increased desire for the resource
C. Decreased population
D. Decrease cost of harvesting the resource
Decreased population will decrease the rate at which resource is consumed.
Option C.
Explanation:Rate of resource utilization depends on the demand for resources among a population. The demand increases with the increase in population who actually uses the resource to increase their comfort.
With the increase in population and increased desire for resources, the rate of consumption of resources is increased. Decreased cost of harvesting the resources will led to wastage of resources, which will again increase the demand again.
So, decrease in population will only decrease the demand for resources. This will actually decrease the rate for the resource harvesting.
Final answer:
The most likely way to reduce resource consumption is through a decreased population, which lowers the demand for various resources and alleviates pressure on the environment.
Explanation:
The option most likely to reduce the rate at which a resource is consumed is C. Decreased population. A decreased population generally leads to lower resource requirements, less habitat destruction, and reduced pressure on both renewable and non-renewable resources. Conversely, an increased population often results in greater demand for land, water, food, and energy, which can increase the rate of resource consumption and lead to environmental degradation. In contrast, a decreased cost of harvesting resources, increased desire for the resource, and increased population would all typically increase consumption rates. It is important to consider strategies for sustainable resource use, such as using technology to improve efficiency, changing consumption behaviors, and ensuring fair distribution of resources to prevent overconsumption and potential population crashes due to resource depletion.
Which type of scientific statement is defined as a statement of fact that is generally accepted to be true and universal because
it has always been observed to be true?
theory
probability
law
hypothesis
Answer:
law
Explanation:
a scientific law is based on observations of similar events that is ALWAYS true while a scientific theory is based on repeated observations and scientific investigations that ia ALMOST ALWAYS true
attached earlobes are a recessive trait in humans. in the tree below, people with attached earlobes are shaded in. which best describes the person labeled X in the tree?
A) a male with one recessive allele
B) a female with no recessive alleles
C) a female with one recessive allele
D) a male with no recessive alleles
Answer:
The correct option is A) a male with one recessive allele
Explanation:
As we can depict, the offsprings are formed by a cross between a homozygous recessive parent and a heterozygous parent.
The outcomes of such a cross will be:
r r
R Rr Rr
r rr rr
The results from the cross show that the offsprings from such a cross will either have both recessive alleles and will have attached earlobes or they will be heterozygous dominant having unattached ear lobes.
As we can see from the pedigree, the person labelled X is not shaded hence it cannot carry the alleles rr. So, the person is heterozygous carrying one dominant and one recessive allele.
Answer:
He's right its A
Explanation:
10. Do you demand a perfect streak or are you able to accept that life is a mix of losses and wins?
Answer: I am able to accept that life is a mix.
Explanation:
not everything in life comes easy and you can learn from your losses to help get more wins.
An animal that regulates its body temperature by producing heat within its own tissues is a _______
Answer:
An endotherm is an animal that regulates its own body temperature, typically by keeping it at a constant level. To regulate body temperature, an organism may need to prevent heat gains in arid environments.
Explanation:
Answer:
a dog
Explanation:
hope it help a little bit
There are many factors that influence the number of different kinds of plants in a biome. Why is elevation, or height, a factor that influences what kinds of plants can live in any certain biome on Earth?
Answer:
Elevation, or height, is a factor that influences what kinds of plants can live in any certain biome on Earth because elevation determines the temperature of that place.
Explanation:
The most important factor that is responsible to make the plants grow in that particular area is the climate, and climate is determined by the height and elevation.As the elevation increases (i.e. height from sea level) the temperature of that place decreases. There are other factors like, pollution, humidity level etc. that determines the growth of biome on earth besides height and elevation.Answer:
Answer:
Elevation, or height, is a factor that influences what kinds of plants can live in any certain biome on Earth because elevation determines the temperature of that place.
Explanation:
The most important factor that is responsible to make the plants grow in that particular area is the climate, and climate is determined by the height and elevation.
As the elevation increases (i.e. height from sea level) the temperature of that place decreases.
There are other factors like, pollution, humidity level etc. that determines the growth of biome on earth besides height and elevation.
Explanation:
Use your knowledge of Mendelian genetics to write a hypothesis that answers the lab questions, “what is the effect of the genes of the parental mice on the fur color of the offspring mice?” Be sure to use the “if ... then ... “ format.
Answer:
If the first generation exhibits a ratio of 3:1 in regard to gray fur, the allele for gray color is dominant over the allele of white color.
Explanation:
Hypothesis:
If the first generation of the offspring from heterozygous mice exhibits a ratio of 3:1 in regard to gray fur, the allele for gray color is dominant (G) over the allele of white color (w).
According to Mendel's theories, some alleles can be dominant over the others. In this scenario, gray fur color is dominant (G) over the white fur color (w). The dominant allele is always shown by a capital letter, while the recessive allele is shown by a low-case letter.
Therefore, if we are performing an experiment with heterozygous mice, we can expect the offspring to exhibit a 3:1 ratio, which means that 1/3 of the offspring would have a white fur color (recessive), while 3/1 will exhibit gray fur color (dominant).
G w (heterozygous male)
G GG Gw
w Gw ww
(heterozygous female)
GG: Gray
Gw: Gray
Gw: Gray
ww: White
Answer:
If either parent mouse passes a dominant allele, the offspring will have black fur.
Explanation:
I just took the lab
what is the end, and the end of the beginning
Answer:
Winston Churchill Quotes
Now this is not the end. It is not even the beginning of the end. But it is, perhaps, the end of the beginning.
Explanation:
The end in literature and storytelling marks the conclusion of the narrative or the resolution of the conflict. The end of the beginning signifies the conclusion of the opening phase and the transition into the main events or plot development.
Explanation:The question seems to be asking about the concept of 'the end' and 'the end of the beginning.' In literature and storytelling, the end is the culmination of the narrative or the resolution of the conflict. It is the moment that concludes the journey or experience. The end of the beginning refers to the conclusion of the opening phase or introduction, marking the transition into the main events or development of the plot.
When created an mRNA, a cell matched a T with a G. This led to a different amino
acid being added during translation. When this happens, what is it called?
accurate base pairing
mutation
transformation
differentiation
Which of the following would be least likely to be part of an ionic bond?
- calcium
- Carbon
- lithium
- Bromine
Answer:
Carbon is least likely to be part of an ionic bond.
Explanation:
Ionic bond is formed by the process of transformation of electron between two atoms.In ionic bonds the charges of cations and anions are balanced.For the atom of carbon to form an ionic bond it must transfer 4 electron or gain 4 electron from another atom, this is not likely to occur in the chemical reaction.Hence carbon atom shares 4 electron so that it can have the configuration of noble gas.Final answer:
Carbon is the element least likely to be part of an ionic bond, as ionic bonds commonly occur between metals and nonmetals, and carbon is a nonmetal.
Explanation:
The element most likely to be least likely to be part of an ionic bond among calcium, carbon, lithium, and bromine is carbon. This is because carbon (group 14) is a nonmetal and does not typically form ionic bonds, which generally occur between a metal and a nonmetal. Calcium (group 2), lithium (group 1), and bromine (group 17) are more likely to form ionic bonds, as calcium and lithium are metals and can readily donate electrons to nonmetals like bromine, which accepts electrons to form negative ions.
The Golgi complex in a cell interacts with?
Answer:
It should be A
Explanation:
The Golgi apparatus is made up of stacks of membrane sacs. Transport vesicles, carrying proteins from the endoplasmic reticulum, enter the Golgi apparatus to be modified and stored. Eventually, these proteins are sent on to their final destinations inside or outside of the cell.
7. Science is to pseudopsychology as
is to
Answer:
psychology; astrology
Explanation:
Science is to pseudopsychology as psychology is to astrology.
Science can be described as a vast field in which various aspects of nature are studied through experiments and observations. Whereas, pseudopsychology can be described as any psychological practice that is false or not supported by valid experiments.
Psychology is the understanding of the human mind by through valid experiments and observations. Astrology is a pseudoscience which focuses on human events related to positions of celestial objects.
Which VERY important process MUST occur prior to cell division and why?
Question 4 options:
Protein Synthesis must occur prior to cell division in order for cells to grow properly.
DNA Replication must occur prior to cell division because T bases should not be created in new cells.
DNA Replication must occur prior to cell division because DNA carries the coding or instructions for all cell function.
Transcription must occur prior to cell division because RNA needs to be able to leave the nucleus for cells to divide.
Answer:
DNA Replication must occur prior to cell division because DNA carries the coding or instructions for all cell function.
DNA Replication must occur prior to cell division because DNA carries the coding or instructions for all cell functions.
The cell cycle can be sequentially divided into an interphase and a mitotic 'M' phase.The interphase can in turn be divided into a Growth G1 phase, synthesis (S) phase and Growth G2 phase.DNA replication occurs during the S phase, before the mitotic M cell division.In conclusion, DNA Replication must occur prior to cell division because DNA carries the coding or instructions for all cell functions.
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What causes pressure?
A. Converting phases
B. Conduction of heat
C. Changes in bonding
D. Collisions of molecules
Answer:
D
Explanation:
collisions between molecules and atoms push on the container creating pressure
Pressure is caused by collisions of molecules within a gas, as their kinetic activity and interactions with the container walls generate a force exerted over an area.
The cause of pressure, especially when discussing gases, is due to collisions of molecules. When gas molecules move, they bounce off each other and the walls of their container. This action results in a force distributed over the area of the container walls, which is defined as pressure. This concept can be represented mathematically as pressure (P) being proportional to the number of collisions, the mass of the molecules (m), and the square of their velocity (v), simplified as P = Nmv2, where N is the number of molecules.
Moreover, changes in temperature and pressure can affect phase changes, such as melting, freezing, evaporation, and condensation. During such phase changes, energy transfer occurs without a change in the system's temperature, leading to the transition from one phase to another. However, when discussing the direct cause of pressure in a gas, it is the kinetic activity of particles, their collisions, and the resulting force on the area of the walls that is directly responsible.
Please help asap
Which of the following describes what might happen with a sudden increase in precipitation in the grassland biome? (2 points)
Select one:
a. Rise in drought-tolerant plants
b. Salt and sediment deposition
c. Increase in plant and animal diversity (Incorrect)
d. Nutrient loss and soil erosion
Answer:
im pretty sure that it is D.
2 Points
Which of the following shows methods of harvesting corn in order from the
lowest rate of resource consumption to the highest?
A. Picked and sorted by hand hand-picked and sorted by a simple
machine picked and sorted by complex machinery
O
B. Picked and sorted by hand picked and sorted by complex
machinery hand-picked and sorted by a simple machine
O
C. Hand-picked and sorted by a simple machine → picked and sorted
by hand picked and sorted by complex machinery
O
D. Picked and sorted by complex machinery — hand-picked and
sorted by a simple machine → picked and sorted by hand
Answer:
The correct option is A) Picked and sorted by hand, hand-picked and sorted by a simple machine picked and sorted by complex machinery
Explanation:
Option A is correct because the first method is to pick ans sort by using the hands only which will be the lowest resource consumption as only hands are being used. The second method illustrates using hands for picking ans simple machinery for sorting. As simple machinery is being used hence this method uses more resources than the first one. The third method described using complex machinery for both picking and sorting, which will use the highest resources.
Answer: D. I just took it
Explanation: