Answer:
Mañana tengo escuela y son las 3 de la mañana
Explanation:
weno me esperas 29 minutos para poder traducir lo que dice ahí? es que no entendí.
Transmission electron microscopes that use high-energy electrons accelerated over a range from 40.0 to 100 kV are employed in many applications including the study of biological samples (like a virus) and nanoscience research and development (alloy particles and carbon nanotubes, for example). What would be the spatial limitation (in pm) for this range of electrons
Answer:
Explanation:
Using the concept of de Broglie wavelength under relativistic conditions to determine the spatial limits for electron range.
de Broglie wave-length [tex]\lambda = \dfrac{h}{p}[/tex]
where;
h = plank's constant
p = momentum of particle which is expressed as:
[tex]p = \dfrac{\sqrt{k^2+2kmc^2}}{c}[/tex]
replacing the expression for (p) into [tex]\lambda = \dfrac{h}{p}[/tex], we have:
[tex]\lambda = \dfrac{h}{\dfrac{\sqrt{k^2 +2kmc^2}}{c}}[/tex]
[tex]\lambda = \dfrac{hc}{\sqrt{k^2+2kmc^2}} --- (1)[/tex]
here;
c = velocity of light = 3 × 10⁸ m/s
h = 4.13 × 10⁻¹⁵ eV.s
i.e.
hc = (4.13 × 10⁻¹⁵ eV.s)(3 × 10⁸ m/s)
hc = 1240 eV.m
The electron's rest energy (mc²) = 0.511 × 10⁶ eV
For the elctrons;
the minimum accelerated voltage = 40kV
the maximum accelerated voltage = 100 kV
the minimum K.E of the electron K = eΔV
K = e × 40 kV
K = 40 KeV
K = 40 × 10³ eV
From equation (1);
[tex]\lambda = \dfrac{hc}{\sqrt{k^2 +2kmc^2}}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{\sqrt{(40 \times 10^3 \ eV)^2 +2(40 \times 10^3 \ eV)(0.511 \times 10^6 \ eV})}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{\sqrt{((1600000000) +(80000\times 511000))eV}}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{\sqrt{((1600000000) +(40880000000)eV}}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{\sqrt{(42480000000) \ eV}}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{206106.769 \ eV}}[/tex]
[tex]\lambda = 0.062 \ nm[/tex]
[tex]\mathbf{\lambda = 6.20 \ pm}[/tex]
The maximum K.E of the electron K = eΔV
K = e × 10 kV
K = 10 KeV
K = 100 × 10³ eV
From equation (1);
[tex]\lambda = \dfrac{hc}{\sqrt{k^2 +2kmc^2}}[/tex]
[tex]\lambda = \dfrac{1240 \ eV.nm}{\sqrt{(100 \times 10^3 \ eV)^2 +2(100 \times 10^3 \ eV)(0.511 \times 10^6 \ eV})}[/tex]
[tex]\lambda = 0.037 \ nm[/tex]
[tex]\mathbf{\lambda = 3.70 \ pm}[/tex]
As a result, the spatial limits for the electron's range span from 6.02 pm to 3.70 pm.
Environmental designers design structures to match the environment.
Please select the best answer from the choices provided
от
OF
Answer:
True
Explanation:
Environmental designers are professionals who try to limit the effects of the building process on the surrounding environment when designing programs, plans, policies, buildings, commercial products, etc. They are capable of simultaneously providing ecological sustainability and pleasant human spaces. For that purpose, environmental designers can build structures by using environmentally friendly materials. Some of the most important areas of research that include the job of an environmental designer include ecology, sustainability, architecture, urban planning, construction, environmental impact, environmental psychology, etc.
Answer:
true
Explanation:
edge 2021
cell produces a chemical that diffuses short distances to reach nearby cells. This type of cell-cell interaction is an example of _______.
Diffusion
I think I’m not sure
Can somebody help me?
the function of mitochondria is
hope this helps
Answer:
Mitochondria are membrane-bound cell organelles (mitochondrion, singular) that generate most of the chemical energy needed to power the cell's biochemical reactions. Chemical energy produced by the mitochondria is stored in a small molecule called adenosine triphosphate
An organism has the following characteristics: cell wall, heterotrophic, unicellular, and prokaryote. What kingdom does
it belong in?
• Animalia
• Protista
• Plantae
•Eubacteria
Answer:
The correct answer is - Eubacteria.
Explanation:
Eubacteria is a kingdom that comes under prokaryotic organisms. These organisms have many characteristic features that are as follows:
Body Structure: Eubacteria are single-celled organisms with a cell wall outside of the cell to protect them.
Food: Eubacteria are both auto- and heterotrophic which means they can be either autotrophic, they use both chemical synthesis and photosynthesis.
Animals lack the cell wall, planate are autotrophic and protists are eukaryotic organisms so the correct answer is eubacteria.
Answer:
D the answer
Explanation:
What colors of light are absorbed? Which color is not absorbed?
Answer:
All colour except which is already present in the body.
Explanation:
The plant leaf has green colour so the plant absorb all the colour except green. The presence of green colour causes reflection of green colour so that's why we can see the green colour of the leaves. Every material or substance have a specific colour which can be seen when they absorb all light except the colour which is already present in it so we can say that that colour is not absorbed by the body which is already present in it.
Which of the following is NOT a dosage form?
Answer:
No c Inglés
Explanation:
Tengo 4 años looooool
When blood glucose levels rise, the hormone ___ is released from the ___ to convert excess glucose into glycogen, a short-term energy storage molecule for the body.
Answer:
insulin; pancreas.
Explanation:
An endocrine system refers to a series of ductless glands and organs responsible for the production and secretion of hormones that are used by the body for the performance of various functions such as metabolism, controlling growth, reproduction, mood, sleep, etc. These hormones are secreted directly into the circulatory system (blood) and then transported to the organs and tissues in the body.
Basically, the endocrine system contributes significantly to the state of homeostasis in the body.
Homeostasis can be defined as a process through which a living organism maintains a steady or stable physical, internal and chemical environment that is ideal to enhance life and proper functionality.
Generally, when the blood glucose levels of a person rise, through an endocrine system, the hormone known as insulin is released from the pancreas to convert excess glucose into glycogen, which is typically a short-term energy storage molecule for the body.
In conclusion, the endocrine system maintain homeostasis by releasing insulin from the pancreas to decrease blood sugar and releasing glucagon to increase blood sugar.
Can somebody help me?
Answer:
Sorry but this isn't clear. What I understood was something related to meosis or something. Not sure tho. Plz post it clear so that you do get answer
Explanation:
A reversible inhibitor that only affects multi substrate enzymes and binds to the enzyme only after one substrate has bound is a(n) ___
Answer:
Uncompetitive inhibitor.
Explanation:
Enzymes are the biological catalysts that catalyze the biological process and metabolic activity of the body. Without enzymes, all the biological activity becomes very slow. Enzyme provides suitable speed for the biological process. All enzymes are made up of protein. The uncompetitive inhibitor is the type of enzyme that only disturbs or affects multi-substrate enzymes and joins to enzymes only after one substrate has bound.
The information in DNA in the nucleus is used to produce
Answer:
Proteins
Explanation:
DNA courses can be turned into messages that can be used to make proteins
What is postharvest handling?
Explanation:
In agriculture, postharvest handling is the stage of crop production immediately following harvest, including cooling, cleaning, sorting and packing. The instant a crop is removed from the ground, or separated from its parent plant, it begins to deteriorate.
choose the true statement(s) concerning the eukaryotic glycocalyx
Explanation:
eukaryotic glycocalyx is present in prokaryotic cells, eukaryotic cells can also have glycocalyces especially single celled eukaryotic organisms.
the hawaiian islands were formed by volcanic activity, but they are far from any plate boundaries. explain how this could occur.
Answer:
Hotspots from under the ground
Explanation:
There are three different situations where an volcano can form. A divergent boundary, where two tectonic plates move away from each other, subduction boundary, where one of the tectonic plates moves under the other, and a hotspot. Scientists are not completely sure how hotspots form.
why a pond is considered a community and also ecosystem
Answer:
A pond is an area filled with water, either natural or artificial, that is smaller than a lake. Ponds can be created by a wide variety of natural process (. on floodplains as cut off river channels, by glacial processes, by Pearl and
formation, in coastal dune systems, by beavers) or they can simply be isolated depressions (such as a kettle hole, vernal pool, prairie pothole or
Answer:
The pond contains both. It contains things like water, rocks, mud, sand, available oxygen, temperature, pH, etc. It also contains living items like bacteria, fish, frogs, etc. That's an ecosystem.
Explanation:
What are the scientists doing incorrectly? What could they do to make their work in the lab safer? Why is it important to follow these procedures? Part A
Answer:
Part A
The scientists threw away their instructions. They should have kept their instructions to properly and safely follow all procedures. Following instructions also ensures useful experimental results.
Part B
The scientist is not wearing safety goggles. He should wear goggles during activities that can harm his eyes. Working safely to avoid injury is every scientist’s job.
Part C
The lab area is messy and needs better organization. The scientist should carefully store the test tubes that aren’t being used. A clean work area helps scientists work safely and efficiently to avoid costly accidents.
Part D
The scientist is disposing of dangerous materials incorrectly. He should have followed disposal instructions as described in the lab procedure. Improper disposal can pollute the environment, harm fragile wildlife, and damage facilities. Scientists must be environmentally responsible.
Part E
The scientist didn’t clean up after an accident. He should have disposed of the glass immediately after it broke rather than waiting. Accidents create hazards for scientists and those around them.
Part F
Scientists should not eat or drink in a lab area. They could swallow something harmful or foul. Snacks and meals should be eaten during designated breaks and never near the lab area.
Explanation:
Plato
Consider the following scenario: In a muddy lake environment, some fish have brown scales. Most fish, however, have silver scales. Predators have a harder time seeing the fish with brown scales. Which term best describes the brown scales?
Answer:
Camouflauge
Explanation:
The given condition in which predators have a more challenging time seeing the fish with brown scales is known as camouflage.
What is camouflage?Plants and animals use camouflage to blend into their surroundings.Both predators and prey use camouflage to avoid detection.Prey may change their skin color or disguise themselves to avoid detection by other predators during this phenomenon. Predators like the Stone Flounder, a flatfish, lay motionless on the ocean floor, buried beneath the sand, waiting for prey.Why do animals use camouflage?hide from their pursuers.They are making it difficult for their prey to flee and sneak upon them.Coloration and markings are used to blend into their surroundings.Thus, we can conclude that the brown scale fish use camouflage, resulting in a more challenging time for predators to see the brown scale fish.
You can learn more about camouflage here,
https://brainly.com/question/15925070.
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The enzyme choline acetyltransferase catalyzes the reaction between acetyl-CoA and choline resulting in the formation of the neurotransmitter acetylcholine. This enzyme is produced within the cell body of neurons, but the synthesis of acetylcholine occurs within the axon terminals. What best describes the axonal transport mechanism associated with this process?
Answer: Anterograde direction.
Explanation:
Choline acetyltransferase is an enzyme made in the body of a neuron and that needs to be transferred to the axon terminal to perform its function. Its function is to bind acetyl-CoA to choline to form the neurotransmitter acetylcholine.
The movement toward the cell body is called retrograde transport and the movement toward the synapse is called anterograde transport. So, since it is produced in the body of the cell and it has to go to the axon terminals, the choline acetyltransferase is transported in the anterograde direction.
This type of transport is responsible for the movement of organelles such as mitochondria, lipids, synaptic vesicles, proteins from a neuron cell body through the cytoplasm of its axon called the axoplasm. Because axons can sometimes be meters long, neurons cannot rely on diffusion to carry products to the end of their axons. Dynein is a motor protein involved in this retrograde axonal transport. Its light chains bind cargo, and its globular head regions bind the microtubule, "moving forward" along it.
Is it important for an electrician to know the right tool for the job?
Answer:
Yes
Explanation:
It is important because if he does not know, he may be hammering a nail with a wrench. That may break the wall itself.
Answer:
Yes definitely
Explanation:
if they dont have the right tool something can go wrong
what can a wave be decribed as
Answer:
what wave hehe
Explanation:
sorry I don't know
An example of transamination is finding a brand new sports car in your driveway with your name on it. removing a phosphate group from a molecule. removing an amino group and putting it into the bloodstream for the kidneys to discard. removing an amino group from one molecule and binding it to a different molecule.
Answer:
removing an amino group from one molecule and binding it to a different molecule.
Explanation:
Biological macromolecules can be defined as a very large molecule (structure) that comprises of covalently bonded organic atoms and smaller molecular structures (monomers).
Biological macromolecules are categorized into four main categories and these includes;
I. Lipids.
II. Carbohydrates.
III. Nucleic acid.
IV. Proteins.
Generally, proteins comprises of amino acids and it is responsible for maintaining the proper functioning of the body system.
Transamination can be defined as a biochemical process which typically involves the removal of amino groups from amino acids and transferring them to a ketoacid (amino acid without an amine group), so as to form new amino acids.
Basically, transamination is a reversible oxidation-reduction reaction that is responsible for the deamination of amino acids.
Hence, an example of transamination is removing an amino group from one molecule and binding it to a different molecule.
What is extinction ?
Answer:
The term extinction's dictionary meaning, is the process of when a species, plant, or any other term for animal family, goes extinct. In more, basic terms, it means when a certain species of animal dies out completely.
This can happen due to several reasons, some being massive natural disasters. Others die out due to an unknown predator entering an ecosystem in which it doesn't belong, therefore disbalancing it.
Examples of extinct animals are Dinosaurs, but their exact reason for going extinct is unkown, there are only theories.
There are also many animals in danger of going extinct, for example Bees.
Hope this information could be of use to you!
Sakura tested the pH of several solutions. Which substance are acidic?
Answer: cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
Explanation:
The substances given are:
cola-flavored soda: 2.6
cranberry juice: 2.9
dish soap: 7.3
pickle juice: 5.5
seawater: 8.0
lye soap: 13.0
Based on a pH scale, an acidic solution is one that has a pH that is below 7, a solution is neutral if the pH is 7 while a basic solution has a pH of above 7.
Therefore, the acidic substance will be:
cola-flavored soda: 2.6
cranberry juice: 2.9
pickle juice: 5.5
Match the hominin with the best description.
Late Pleistocene hominins found only in Europe, Western Asia, and Central Asia; the Shanidar site belongs to this group.
Middle Pleistocene hominin; found in Africa, Asia, Europe; shows a mixture of features from previous and later hominins.
Answer:
- Late Pleistocene hominins found only in Europe, Western Asia, and Central Asia; the Shanidar site belongs to this group: Neandertals
- Middle Pleistocene hominin; found in Africa, Asia, Europe; shows a mixture of features from previous and later hominins: Homo_heidelbergensis
Explanation:
Neandertals represent an extinct hominid lineage and the closest evolutionary relatives of humans. Neandertals lived in Europe, Central Asia, the Middle East and western Siberia. This group of extinct hominids appeared around 130,000 years ago until their extinction, approx. 40,000 years ago. On the other hand, Homo_heidelbergensis is an extinct group of Homo_Hominids who lived during the Middle Pleistocene, a time period spanning 780,000-120,000 years ago. Homo_heidelbergensis is considered the most recent common ancestor between H. sapiens (modern humans) and Neanderthals. This species (Homo_heidelbergensis) combined primitive features (e.g., a wide face, and thick arching brow ridges) with modern features (e.g., a large brain capacity).
What are the necessary components required to start the transcription of a gene? What needs to be added in order to create a protein?
How does the length of the transcribed region impact the length of the gene (DNA)?
You accidentally produce a gene (strand of DNA) after you have filled up all five of your protein shapes? How would you eliminate this DNA?
Where does the negative transcription factor work?
Why are there more than one positive transcription factors on each of the three genes?
Answer:
What are the necessary components required to start the transcription of a gene?
Explanation:
Initiation. RNA polymerase binds to a sequence of DNA called the promoter, found near the beginning of a gene. Each gene (or group of co-transcribed genes, in bacteria) has its own promoter. Once bound, RNA polymerase separates the DNA strands, providing the single-stranded template needed for transcription.
I Hope this helps!
Initiation.
RNA polymerase binds to a sequence of DNA called the promoter, found near the beginning of a gene. Each gene has its own promoter. Once bound, RNA polymerase separates the DNA strands, providing the single-stranded template needed for transcription.
What is transcription?
Transcription is the process in which a gene's DNA sequence is copied (transcribed) to make an RNA molecule.RNA polymerase is the main transcription enzyme.Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene.Learn more about transcription below,
https://brainly.com/question/1433349
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Chapter 1
1. Which of the following is an example of homeostasis?
a. regulation of blood CO2 level
b. regulation of blood glucose level
c. regulation of body temperature
d. all of the above
2. Which statement is a correct description of negative feedback control system?
a. It is stimulatory
b. It is inhibitory
c. It amplifies the change that is occurring
3. Positive feedback control system:
a. Are stimulatory
b. Tend to produce destabilizing effects and disrupt homeostasis
c. Produce an action that is opposite to the change that activate the same system
d. Both "a" and "b" are correct
4. The lungs are ____________ to the liver:
a. distal
b. lateral
c. inferior
d. superior
5. The heart is ___________ to the lungs:
a. superior
b. dorsal
c. medial
d. lateral
6. A vertical plane through the body dividing it into right and left is termed:
a. sagittal
b. lateral
c. transverse
d. frontal
7. A patient sustains severe blunt trauma to the left upper abdomen and requires surgery. The body organ most likely to be involved is the ____________
a. appendix
b. gallbladder
c. spleen
d. urinary bladder
8. Cytology is the study of:
a. tissues
b. organisms
c. cells
d. all of these are correct
9. A term that means nearer the attached end of a limb is:
a. medial
b. lateral
c. distal
d. proximal
10. Coronal plane:
a. Divides the body into anterior and posterior portions
b. Divides the body into upper and lower portions
c. Divides the body into left and right portions
d. Is also called horizontal plane
Answer:
homeostasis regulate body glucose
Is this right I really need help plzzzzzzzzz
period between two periods of mitosis
the process involving the division of the nucleus in a
reproductive cell
Answer:
The nuclear division that forms haploid cells, which is called meiosis, is related to mitosis. As you have learned, mitosis is the part of a cell reproduction cycle that results in identical daughter nuclei that are also genetically identical to the original parent nucleus.
Explanation:
The nuclear division that forms haploid cells, which is called meiosis, is related to mitosis. As you have learned, mitosis is the part of a cell reproduction cycle that results in identical daughter nuclei that are also genetically identical to the original parent nucleus.
Answer:
In general, mitosis (division of the nucleus) is preceded by the S stage of interphase (during which the DNA is replicated) and is often followed by telophase and cytokinesis; which divides the cytoplasm, organelles and cell membrane of one cell into two new cells containing roughly equal shares of these cellular components.
Explanation:
The different stages of Mitosis all together define the mitotic (M) phase of an animal cell cycle—the division of the mother cell into two genetically identical daughter cells.Meiosis results in four haploid daughter cells by undergoing one round of DNA replication followed by two divisions. Homologous chromosomes are separated in the first division.
A pH value of ____ has the highest concentration of hydrogen ions.
Answer:
0
Explanation:
Since the number 14 would be the value to have the strongest base in the pH scale, it would only make sense that 0 is the most acidic.
