Answers
Answer:
Soil is a basic and fundamental natural resource, which took millions of years in its formation, resulting from the processes of disintegration and decomposition of rocks due to weathering. As much as many rocks, due to their hardness levels, seem indestructible, they all end up decomposing, even if slowly. Weathering is the general process that causes the deterioration of rocks. He is responsible for producing all the clays, all soils and dissolved substances that end up carried by rivers to the oceans. We can subdivide it into two types: chemical weathering and physical weathering. The first occurs when the minerals of a given rock undergo a chemical alteration or dissolution – and here the action of water is very important. The second occurs when there is a fragmentation of solid rock, through mechanical processes that do not change its chemical composition. Both reinforce each other. The smaller the pieces of rock created by physical weathering, the greater the surface for chemical weathering to act.
Rocks, reduced in particles through weathering, can accumulate as soil or, through erosion, be transported or deposited in the form of sediments somewhere else. Erosion is then defined as the process in which weathered materials (i.e., dismantled into smaller mineral fractions) are displaced or removed from their origin, usually by the action of water or air currents. A third geological process that should be mentioned is the dispersion of mass, which usually moves in isolated events, downhill, terrestrial materials modified or not by weathering, including large fragments of unchanged rocks.
Explanation:
Related Questions
What do diatoms and krill have in common?
Answers
\( \\ \\ \)
=> Diatoms and Dinoflagellates are single-celled, eukaryotic algae. Both reside in marine environments. They are types of phytoplankton.
No links please, and thank you in advance :)
Can someone give me an example of a dichotomous key, I have learned a little about it.. but I’m still a little confused. Can I have an example?
Answers
Answer:
important scientific tool used to identify different organisms, based the organism's observable traits
Explanation:
consist of a series of statements with two choices in each step that will lead users to the correct identification
For example, in tree identification, a dichotomous key might ask whether the tree has leaves or needles. The key then directs the user down one list of questions if the tree has leaves, and a different question list if it has needles.
Answer:
Example objects to identify: apple tree, water-lily, fir tree, dandelion, astroturf, seaweed. Dichotomous keys may be simple or complex depending on what is being identified. I hope this helps
Explanation:
6.) Water is essential to all living things. Discuss THREE properties of water
(6 points maximum):Name of property and correct description (2 points).
Points MUST provide BOTH property and description. *
Answers
Answer:
Water is essential to all living things because people or animals could die if not eat or drink water everyday like health.
Explanation:
How does the friction affect the total time a pendulum is in motion? And what could cause this friction in the real world?
Answers
Answer:
Without friction, the equation of motion for a pendulum of length L is,
md2θdt2+mgsin(θ)L=0.
Or for small oscillations, (i.e., sin(θ)≈θ),
md2θdt2+mgθL=0.
Assuming an initial angle θ0 and a pendulum that starts at rest, the solution to this differential equation is,
θ(t)=θ0cos(gL−−√t).
Frictional force adds an additional damping term into the equation of motion,
md2θdt2+λdθdt+mgθL=0,
where λ is a coefficient of kinetic friction.
Assuming an initial angle θ0 and a pendulum that starts at rest, the solution to the damped differential equation is,
θ(t)=θ0e−12λmtcos((gL−λ24m2−−−−−−−−√)t).
(Note: If you would like to consider closed form solutions for large angles, I would recommend consulting the mathematics section. The solutions to that problem are called elliptic integrals of the first kind.)
Friction decreases the total time that a pendulum is in motion.
If we consider a pendulum in motion, in accordance with Newton's law, the pendulum will continue moving unless it is acted upon by an external force.
In the case of the pendulum, the external force that acts on it is the air resistance or friction. As a result of this friction, the pendulum will eventually come to a stop.
In the real world, the surface of objects cause friction which causes moving objects to stop.
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Question 1
The adrenal cortex releases
during stress.
Adrenaline
Endorphins
Oxytocin
Cortisol
Answers
Answer:
Adrenaline
Explanation:
Adrenaline is released into the bloodstream by the Adrenal Cortex during stress.
Bursting of which of the following would most likely kill a cell?
Answers
Answer:
Lysosome
Explanation:
Answer:
Nucleolus
Explanation:
My mom is a nurse and she said "I pretty sure it's that"
When someone is admitted to the hospital, one of the first procedures health-care professionals perform is a blood draw. One lab value checked is a white blood cell (WBC) count. If the WBC count is elevated (normal range 4 4,000–11,000/mm3), this could indicate the presence of inflammation. Further analysis (called a differential) is performed to determine the relative prevalence of different types of white blood cells and the potential cause of the inflammation. What might be causing the inflammation if eosinophils were elevated? Explain your reasoning
Answers
The most common causes of infection-induced neutrophilia are acute bacterial infections such pneumococcal, staphylococcal, or leptospiral infections.
Neutrophilia can also result from specific viral illnesses such herpes simplex, varicella, and EBV infections.
A bacterial, viral, fungal, or parasitic illness may result in an increase in neutrophils in the blood. Those with injuries, such as burns or hip fractures, as well as those with inflammatory diseases, particularly autoimmune diseases like rheumatoid arthritis, are more likely to experience this.
A greater absolute neutrophil count in the blood than the typical reference range is referred to as neutrophililia. Infections, inflammation, and/or neoplastic processes can all produce neutrophilia.
Any types of infections, including those brought on by bacteria, viruses, fungi, and parasites, may result in an increase in neutrophil activity and quantity in the blood. Certain medications, like corticosteroids, also result in a rise in the blood's neutrophil population.
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In the enzyme reaction above, catechol is the substrate, oxygen is a reactant, catechol oxidase is the enzyme, benzoquinone is the product, and water (H2O) is a by-product. Which of the following will decrease the rate of this reaction?
(A) Reducing the amount of water
(B) Reducing the amount of catechol
(C) Increasing the amount of catechol oxidase
(D) Increasing the amount of benzoquinone
Answers
The following will decrease the rate of this reaction option B. Reducing the amount of catechol.
In the enzyme reaction you described, reducing the amount of catechol will decrease the rate of the reaction. As catechol is the substrate, it binds to the active site of catechol oxidase, the enzyme, to facilitate the reaction. A lower concentration of catechol would result in fewer substrate molecules available to interact with the enzyme, leading to a slower reaction rate.
Reducing the amount of water (option A) is not likely to affect the reaction rate significantly, as water is a by-product and does not play a direct role in the reaction mechanism. Increasing the amount of catechol oxidase (option C) would typically increase the reaction rate, as there would be more enzyme molecules available to bind with catechol, speeding up the process.
Finally, increasing the amount of benzoquinone (option D) might have minimal effect on the reaction rate, as it is a product, and any potential impact through product inhibition would depend on specific reaction dynamics.
In summary, reducing the amount of catechol, the substrate is the most likely option to decrease the rate of the enzyme reaction involving catechol oxidase. Therefore, the correct option is B.
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Underwater plants have thin and narrow leaves without stomata. In such plants, how does exchange of gases take place ?
Answers
How many chromosomes and DNA molecules are present in horse cells: Spermatogonium, first polar body, primary oocyte and secondary spermatocyte?
Answers
Answer:
cholli I don't know dear...
Which of the following is NOT true of bacteria?
A. They can live in acid pools.
B. They can survive only on Earth.
C. They are the oldest life form on Earth.
D. They can be used to make paper white.
Answers
If you go on mc3.edu/admissions/applying-to-mccc/testing-and-assessment/assets/biology-placement-test.pdf page 11 it will tell you all the answers to your questions....
Convert enzyme concentrations of 2.5%, 5.0%, and 10% to ppt units.
Answers
Answer:
2.5 x 10¹⁰ ppt
5.0 x 10¹⁰ ppt
1.0 x 10¹¹ ppt
Explanation:
The notation ppt refers to parts per trillion units, that is, how many parts of enzyme are there in 1 trillion parts. Percentage refers to the number of parts per 100 units. Converting the given values from percentage to ppt:
\(\frac{2.5}{100}=\frac{a}{1,000,000,000,000}\\a=2.5 *10^{10}\ ppt\\\\\frac{5.0}{100}=\frac{b}{1,000,000,000,000}\\b=5.0 *10^{10}\ ppt\\\\\frac{10}{100}=\frac{c}{1,000,000,000,000}\\c=1*10^{11}\ ppt\)
The concentration in ppt are:
2.5 x 10¹⁰ ppt
5.0 x 10¹⁰ ppt
1.0 x 10¹¹ ppt
1 Percent [%] = 10 000 000 000 Parts per trillion [ppt]
1) Converting 2.5% to ppt1% = 10 000 000 000 ppt
2.5% = ?
Cross multiply
2.5% x 10 000 000 000 ppt / 1 %
= 25, 000 000 000 ppt
2) Converting 5% to ppt1% = 10 000 000 000 ppt
5% = ?
Cross multiply
5% x 10 000 000 000 ppt / 1 %
= 50, 000 000 000 ppt
3) Converting 10% to ppt1% = 10 000 000 000 ppt
10% = ?
Cross multiply
10% x 10 000 000 000 ppt / 1 %
= 100, 000 000 000 ppt
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If allele B made bacteria resistant to antibiotics, which of the following is correct
Answers
Answer:
The Bacteria population is less likely to be killed by antibiotics
Is the following sentence true or false? Liquid magma is formed when small amounts of mantle rock melt?
Answers
Answer:
Absolutely True!
Explanation:
In humans, the alleles for unattached earlobes is dominant over the allele for attached earlobes. The allele for dark hair dominates the allele for light hair. If both parents are heterozygous for earlobe attachment and hair color, what types of offspring can they produce, and what is the probability for each type?
Answers
First, let's define the alleles:
(Dominant) allele for unattached earlobes is E
Allele for attached earlobs is e
(Dominant) allele for dark hair is H
Allele for light hair is h
Heterozygous would mean that for both sets of alleles, they will be EeHh.
Now for a Punnett Square:
EH Eh eH eh
EH EEHH EEHh EeHH EeHh
Eh EEHh EEhh EeHh Eehh
eH EeHH EeHh eeHH eeHh
eh EeHh Eehh eeHh eehh
These are all the possibilities for the parents' offspring. Since the square is 4x4, then the number of genotypes is 16.
Now for the probabilities of each genotype (the amount of times a certain genotype appears divided by the total number of genotypes):
EEHH: \(\frac{1}{16}\)
EEHh: \(\frac{2}{16}\)
EEhh: \(\frac{1}{16}\)
EeHH: \(\frac{2}{16}\)
EeHh: \(\frac{4}{16}\)
Eehh: \(\frac{2}{16}\)
eeHH: \(\frac{1}{16}\)
eeHh: \(\frac{2}{16}\)
eehh: \(\frac{1}{16}\)
(If you ever want to check if your probabilities are off, just add them together and they should add up to the total!)
Hope this helps! :)
PH basic range of basic substances ?
Answers
Answer:
I think it should be 7 to 10
Answer:
It's so easy
between 7 to 14
How does the nervous system work to enable of person to walk?
Answers
Answer and Explanation :
When we begin to move, the brain first sends a signal to the spinal cord, then nerve cells in the spinal cord control the precise coordination of the muscles. The results also indicate that each part of the brainstem controls a certain aspect of moving—either running or walking.
A scientist injects a drug called rifampicin, which inhibits RNA synthesis, into a bacterium. What is the most likely direct result of this alteration?
The bacterial DNA will stop replicating.
The bacterial DNA will replicate in an uncontrolled way.
The process of protein synthesis will stop in the bacterium.
Answers
The most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
What is Rifampicin drug used for?The drug Rifampin is used to treat tuberculosis (TB) in many different parts of the body. It is also used by patients who have meningitis bacteria in their nose or throat who do not show symptoms of the infection to prevent the spread of the bacteria to other patients.
Rifampin specifically inhibits bacterial RNA polymerase. It is an enzyme that is responsible for DNA transcription, by forming a stable drug-enzyme complex with a binding constant of 10(-9) M at 37 C. The corresponding mammalian enzymes are not affected by rifampin.
Therefore, the most likely direct result of this alteration is that the bacterial DNA will stop replicating. Thus, the correct option for this question is A.
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in terms of volume does blood normally contain more plasma or more formed elements
Answers
Answer:
I think blood is made up of more plasma
Explanation:
I think more than 50% is made up of blood plasma
Which region of the brain exhibits somatotopy?
A) primary somatosensory cortex
B) limbic system
C) hypothalamus
D) Broca's area
Answers
Answer:
A) primary somatosensory cortex exhibits somatotopy.
Somatotopy refers to the organization of the primary somatosensory cortex (located in the parietal lobe of the brain) in which it is mapped out according to the different areas of the body. Every part of the somatosensory cortex corresponds to a specific part of the body. This means that when a particular region of the body is stimulated (e.g. through touch), the corresponding region of the brain is also stimulated, which allows the brain to perceive the location and nature of the stimulus. This topographical organization of the brain is important in processing and integrating sensory information, and it is essential for motor planning, movement, and sensory perception.
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. Allele D produces tall plants and is dominant to d for short plants, and allele R produces round fruit and is dominant to r for oval fruit. The expected percentages of progeny phenotypes are listed below:
tall oval = 41%
short round = 41%
tall round = 9%
short oval = 9%
(a) What proportion are expected to be tall and produce round fruit?
Answers
In a diploid plant species, the proportion of progeny expected to be tall and produce round fruit is 32%.
In a diploid species of plant, the genes for plant height and fruit shape are syntenic and separated by 18 m.u. The expected percentages of progeny phenotypes are tall oval = 41%, short round = 41%, tall round = 9%, and short oval = 9%.To determine the proportion of progeny expected to be tall and produce round fruit, we need to consider the alleles for each trait. Allele D produces tall plants (dominant) and allele d produces short plants (recessive). Allele R produces round fruit (dominant) and allele r produces oval fruit (recessive).From the given percentages, we can deduce that tall ovals and short ovals combined make up 9%. Since tall oval is 41% and short oval is 9%, the proportion of progeny expected to be tall and produce round fruit is 41% - 9% = 32%.Therefore, the proportion of progeny expected to be tall and produce round fruit is 32%.For more questions on diploid plant
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A group of three nucleotide bases in RNA that specify a particular amino acid to be produced
O RNA Polymerase
O Translation
O Transcription
O Codon
Answers
the answer is RNA Polymerase
The United States Congress has two houses, the Senate and the __________. A. Cabinet B. House of Lords C. House of Commons D. House of Representatives Please select the best answer from the choices provided A B C D
Answers
Answer:
House of Representatives is the answer
Explanation:
Answer:
House of Representatives
Explanation:
Can someone help me with this phone pls it’s due asap
Answers
New technologies has allowed scientists to build cladograms based on similarities in DNA. Thus, option A is correct.
What is cladogram?A cladogram is a diagram of branches that show the cladistic relationship between animal species. A node you can expect to find on the cladogram would be Deuterostome development. Examples of deuterostomes are starfish and sea cucumbers.
Recombinant DNA technology can be defined as the process that involves manipulation of genetic material of an organism to get the desired trait or product.
Therefore, New technologies has allowed scientists to build cladograms based on similarities in DNA. Thus, option A is correct.
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How long would it take sound waves traveling through air that is 68°F to travel 1,372 meters? Use an equation to solve the problem.
Answers
The time taken by the sound waves traveling through the air will be 2.87 seconds.
What is Algebra?Algebra is the study of abstract symbols, while logic is the manipulation of all those ideas.
The air that is 68°F to travel 1,372 meters.
68°F = 293.15 K
The velocity of air is given as,
v = 331.3 × √[1 + (T / 273.15)]
v = 331.3 × √[1 + (293.15 / 273.15)]
v = 477.028 m/s
Then the time taken is given as,
t = d/v
t = 1372 / 477.028
t = 2.87 seconds
The time taken by the sound waves traveling through the air will be 2.87 seconds.
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Scientists compare two different plant species. In species A, the leaf color is
controlled by two alleles. In species B, leaf color is controlled by five alleles.
How will these two plants be different?
• A. Species A will have a wider range of phenotypes.
• B. Species B will have more offspring.
• C. Species B will have a wider range of leaf colors.
• D. Species A will have a wider range of genotypes
Answers
Answer:
C. Species B will have a wider range of leaf color.
Explanation:
Allele specific oligonucleotides (ASO) can be used to determine the different alleles present in a DNA sample. Single sperm, which have completed meiosis, can be used for a polymerase chain reaction (PCR). The amplified DNA is then spotted to filters and hybridized with probes that recognize single nucleotide differences. A sperm sample was collected from a single individual and DNA was extracted from individual sperm. For each DNA sample, four different regions of the genome were amplified using PCR (called A, B, D, and E). For each DNA sample, ASO probes were used to determine the allele present (Either allele 1 or 2) for each region of the genome amplified. X indicates the allele is present and - indicates the allele is not present.
Number of Sperm Loci and Alleles
A1 A2 B1 B2 D1 D2 E1 E2
45 X - X - X - - X
46 - X X - - X X -
7 X - X - X - X -
8 - X X - - X - X
17 X - X - - X - X
19 - X X - X - X -
(Notice that there are only six classes of genotypes among the products of meiosis. For three segregating genes, you would expect to see eight different genotypic combinations. The missing genotypes are the DCO combinations and thus you should figure out what combinations are missing and assign them a value of zero)
What is an estimate of the map distance for each pair of genes?
(for unlinked gene pairs enter 50 and round off your answer to one significant digit to the right of the decimal point, i.e. 12.8 mu. If can't determine linkage, enter "-1")
A-D distance?
D-E distance?
Answers
Answer:
Explanation below
Explanation:
DNA is the one responsible for character or trait transfer because it contains genes.
There are genes for sperm and these sperms are for reproduction.
Which of the following is NOT an example of a biological model? (all answers choices 2nd slide)
Answers
Answer:
pictures of different ecosystems
Explanation:
i got it right
What unit of measurement would I use to measure the thickness of a hair?
Answers
Answer:
a micrometer
Explanation:
micrometer
Explanation:
So, of course it will be a micrometer.
Which is NOT a factor in moving toward
the use of more non-renewable resources?
Stretch the Yellow Highlight Box over the answer.
Improvement in technology
Changing regulations
Running out of easily accessible
non-renewable sources
All renewable resources are less
expensive and available everywhere
Answers
Answer: Non-renewable resources have their place in our world. We might focus on providing solar, wind, or geothermal energy to homes and businesses, but fossil fuels help us to maintain our overall infrastructure. Phasing out their use might happen in the future, although the reliability of the electricity and transportation benefits that we gain from them are challenging to ignore.
Explanation: Hope it helped :D